Squashed 'vendor/ruvector/' content from commit b64c2172

git-subtree-dir: vendor/ruvector
git-subtree-split: b64c21726f2bb37286d9ee36a7869fef60cc6900

examples/scipix/src/output/docx.rs

@@ -0,0 +1,298 @@
+//! DOCX (Microsoft Word) formatter with Office Math ML support
+//!
+//! This is a stub implementation. Full DOCX generation requires:
+//! - ZIP file creation for .docx format
+//! - XML generation for document.xml, styles.xml, etc.
+//! - Office Math ML for equations
+//! - Image embedding support
+//!
+//! Consider using libraries like `docx-rs` for production implementation.
+
+use super::{LineData, OcrResult};
+use std::io::Write;
+
+/// DOCX formatter (stub implementation)
+#[allow(dead_code)]
+pub struct DocxFormatter {
+    include_styles: bool,
+    page_size: PageSize,
+    margins: Margins,
+}
+
+#[derive(Debug, Clone, Copy)]
+pub struct PageSize {
+    pub width: u32, // in twips (1/1440 inch)
+    pub height: u32,
+}
+
+impl PageSize {
+    pub fn letter() -> Self {
+        Self {
+            width: 12240,  // 8.5 inches
+            height: 15840, // 11 inches
+        }
+    }
+
+    pub fn a4() -> Self {
+        Self {
+            width: 11906,  // 210mm
+            height: 16838, // 297mm
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy)]
+pub struct Margins {
+    pub top: u32,
+    pub right: u32,
+    pub bottom: u32,
+    pub left: u32,
+}
+
+impl Margins {
+    pub fn normal() -> Self {
+        Self {
+            top: 1440, // 1 inch
+            right: 1440,
+            bottom: 1440,
+            left: 1440,
+        }
+    }
+}
+
+impl DocxFormatter {
+    pub fn new() -> Self {
+        Self {
+            include_styles: true,
+            page_size: PageSize::letter(),
+            margins: Margins::normal(),
+        }
+    }
+
+    pub fn with_page_size(mut self, page_size: PageSize) -> Self {
+        self.page_size = page_size;
+        self
+    }
+
+    pub fn with_margins(mut self, margins: Margins) -> Self {
+        self.margins = margins;
+        self
+    }
+
+    /// Generate Office Math ML from LaTeX
+    /// This is a simplified placeholder - real implementation needs proper conversion
+    pub fn latex_to_mathml(&self, latex: &str) -> String {
+        // This is a very simplified stub
+        // Real implementation would parse LaTeX and generate proper Office Math ML
+        format!(
+            r#"<m:oMathPara>
+  <m:oMath>
+    <m:r>
+      <m:t>{}</m:t>
+    </m:r>
+  </m:oMath>
+</m:oMathPara>"#,
+            self.escape_xml(latex)
+        )
+    }
+
+    /// Generate document.xml content
+    pub fn generate_document_xml(&self, lines: &[LineData]) -> String {
+        let mut xml = String::from(
+            r#"<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"
+            xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math">
+  <w:body>
+"#,
+        );
+
+        for line in lines {
+            xml.push_str(&self.format_line(line));
+        }
+
+        xml.push_str("  </w:body>\n</w:document>");
+        xml
+    }
+
+    fn format_line(&self, line: &LineData) -> String {
+        match line.line_type.as_str() {
+            "text" => self.format_paragraph(&line.text),
+            "math" | "equation" => {
+                let latex = line.latex.as_ref().unwrap_or(&line.text);
+                self.format_math(latex)
+            }
+            "heading" => self.format_heading(&line.text, 1),
+            _ => self.format_paragraph(&line.text),
+        }
+    }
+
+    fn format_paragraph(&self, text: &str) -> String {
+        format!(
+            r#"    <w:p>
+      <w:r>
+        <w:t>{}</w:t>
+      </w:r>
+    </w:p>
+"#,
+            self.escape_xml(text)
+        )
+    }
+
+    fn format_heading(&self, text: &str, level: u32) -> String {
+        format!(
+            r#"    <w:p>
+      <w:pPr>
+        <w:pStyle w:val="Heading{}"/>
+      </w:pPr>
+      <w:r>
+        <w:t>{}</w:t>
+      </w:r>
+    </w:p>
+"#,
+            level,
+            self.escape_xml(text)
+        )
+    }
+
+    fn format_math(&self, latex: &str) -> String {
+        let mathml = self.latex_to_mathml(latex);
+        format!(
+            r#"    <w:p>
+      <w:r>
+        {}
+      </w:r>
+    </w:p>
+"#,
+            mathml
+        )
+    }
+
+    fn escape_xml(&self, text: &str) -> String {
+        text.replace('&', "&amp;")
+            .replace('<', "&lt;")
+            .replace('>', "&gt;")
+            .replace('"', "&quot;")
+            .replace('\'', "&apos;")
+    }
+
+    /// Save DOCX to file (stub - needs ZIP implementation)
+    pub fn save_to_file<W: Write>(
+        &self,
+        _writer: &mut W,
+        _result: &OcrResult,
+    ) -> Result<(), String> {
+        Err("DOCX binary format generation not implemented. Use docx-rs library for full implementation.".to_string())
+    }
+
+    /// Generate styles.xml content
+    pub fn generate_styles_xml(&self) -> String {
+        r#"<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<w:styles xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">
+  <w:style w:type="paragraph" w:styleId="Normal">
+    <w:name w:val="Normal"/>
+    <w:qFormat/>
+  </w:style>
+  <w:style w:type="paragraph" w:styleId="Heading1">
+    <w:name w:val="Heading 1"/>
+    <w:basedOn w:val="Normal"/>
+    <w:qFormat/>
+    <w:pPr>
+      <w:keepNext/>
+      <w:keepLines/>
+    </w:pPr>
+    <w:rPr>
+      <w:b/>
+      <w:sz w:val="32"/>
+    </w:rPr>
+  </w:style>
+</w:styles>"#
+            .to_string()
+    }
+}
+
+impl Default for DocxFormatter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::output::BoundingBox;
+
+    #[test]
+    fn test_page_sizes() {
+        let letter = PageSize::letter();
+        assert_eq!(letter.width, 12240);
+
+        let a4 = PageSize::a4();
+        assert!(a4.width < letter.width);
+    }
+
+    #[test]
+    fn test_escape_xml() {
+        let formatter = DocxFormatter::new();
+        let result = formatter.escape_xml("Test <tag> & \"quote\"");
+
+        assert!(result.contains("&lt;"));
+        assert!(result.contains("&gt;"));
+        assert!(result.contains("&amp;"));
+        assert!(result.contains("&quot;"));
+    }
+
+    #[test]
+    fn test_format_paragraph() {
+        let formatter = DocxFormatter::new();
+        let result = formatter.format_paragraph("Hello World");
+
+        assert!(result.contains("<w:p>"));
+        assert!(result.contains("<w:t>Hello World</w:t>"));
+    }
+
+    #[test]
+    fn test_format_heading() {
+        let formatter = DocxFormatter::new();
+        let result = formatter.format_heading("Chapter 1", 1);
+
+        assert!(result.contains("Heading1"));
+        assert!(result.contains("Chapter 1"));
+    }
+
+    #[test]
+    fn test_latex_to_mathml() {
+        let formatter = DocxFormatter::new();
+        let result = formatter.latex_to_mathml("E = mc^2");
+
+        assert!(result.contains("<m:oMath>"));
+        assert!(result.contains("mc^2"));
+    }
+
+    #[test]
+    fn test_generate_document_xml() {
+        let formatter = DocxFormatter::new();
+        let lines = vec![LineData {
+            line_type: "text".to_string(),
+            text: "Hello".to_string(),
+            latex: None,
+            bbox: BoundingBox::new(0.0, 0.0, 100.0, 20.0),
+            confidence: 0.95,
+            words: None,
+        }];
+
+        let xml = formatter.generate_document_xml(&lines);
+        assert!(xml.contains("<?xml"));
+        assert!(xml.contains("<w:document"));
+        assert!(xml.contains("Hello"));
+    }
+
+    #[test]
+    fn test_generate_styles_xml() {
+        let formatter = DocxFormatter::new();
+        let xml = formatter.generate_styles_xml();
+
+        assert!(xml.contains("<w:styles"));
+        assert!(xml.contains("Normal"));
+        assert!(xml.contains("Heading 1"));
+    }
+}

examples/scipix/src/output/formatter.rs

@@ -0,0 +1,412 @@
+//! Multi-format output formatter with batch processing and streaming support
+
+use super::*;
+use crate::output::{html, latex, mmd, smiles};
+use std::io::Write;
+
+/// Configuration for output formatting
+#[derive(Debug, Clone)]
+pub struct FormatterConfig {
+    /// Target output formats
+    pub formats: Vec<OutputFormat>,
+
+    /// Enable pretty printing (where applicable)
+    pub pretty: bool,
+
+    /// Include confidence scores in output
+    pub include_confidence: bool,
+
+    /// Include bounding box data
+    pub include_bbox: bool,
+
+    /// Math delimiter style for LaTeX/MMD
+    pub math_delimiters: MathDelimiters,
+
+    /// HTML rendering engine
+    pub html_engine: HtmlEngine,
+
+    /// Enable streaming for large documents
+    pub streaming: bool,
+}
+
+impl Default for FormatterConfig {
+    fn default() -> Self {
+        Self {
+            formats: vec![OutputFormat::Text],
+            pretty: true,
+            include_confidence: false,
+            include_bbox: false,
+            math_delimiters: MathDelimiters::default(),
+            html_engine: HtmlEngine::MathJax,
+            streaming: false,
+        }
+    }
+}
+
+/// Math delimiter configuration
+#[derive(Debug, Clone)]
+pub struct MathDelimiters {
+    pub inline_start: String,
+    pub inline_end: String,
+    pub display_start: String,
+    pub display_end: String,
+}
+
+impl Default for MathDelimiters {
+    fn default() -> Self {
+        Self {
+            inline_start: "$".to_string(),
+            inline_end: "$".to_string(),
+            display_start: "$$".to_string(),
+            display_end: "$$".to_string(),
+        }
+    }
+}
+
+/// HTML rendering engine options
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum HtmlEngine {
+    MathJax,
+    KaTeX,
+    Raw,
+}
+
+/// Main output formatter
+pub struct OutputFormatter {
+    config: FormatterConfig,
+}
+
+impl OutputFormatter {
+    /// Create a new formatter with default configuration
+    pub fn new() -> Self {
+        Self {
+            config: FormatterConfig::default(),
+        }
+    }
+
+    /// Create a formatter with custom configuration
+    pub fn with_config(config: FormatterConfig) -> Self {
+        Self { config }
+    }
+
+    /// Format a single OCR result
+    pub fn format_result(&self, result: &OcrResult) -> Result<FormatsData, String> {
+        let mut formats = FormatsData::default();
+
+        for format in &self.config.formats {
+            let output = self.format_single(result, *format)?;
+            self.set_format_output(&mut formats, *format, output);
+        }
+
+        Ok(formats)
+    }
+
+    /// Format multiple results in batch
+    pub fn format_batch(&self, results: &[OcrResult]) -> Result<Vec<FormatsData>, String> {
+        results
+            .iter()
+            .map(|result| self.format_result(result))
+            .collect()
+    }
+
+    /// Stream format results to a writer
+    pub fn format_stream<W: Write>(
+        &self,
+        results: &[OcrResult],
+        writer: &mut W,
+        format: OutputFormat,
+    ) -> Result<(), String> {
+        for (i, result) in results.iter().enumerate() {
+            let output = self.format_single(result, format)?;
+            writer
+                .write_all(output.as_bytes())
+                .map_err(|e| format!("Write error: {}", e))?;
+
+            // Add separator between results
+            if i < results.len() - 1 {
+                writer
+                    .write_all(b"\n\n---\n\n")
+                    .map_err(|e| format!("Write error: {}", e))?;
+            }
+        }
+
+        Ok(())
+    }
+
+    /// Format a single result to a specific format
+    fn format_single(&self, result: &OcrResult, format: OutputFormat) -> Result<String, String> {
+        match format {
+            OutputFormat::Text => self.format_text(result),
+            OutputFormat::LaTeX => self.format_latex(result, false),
+            OutputFormat::LaTeXStyled => self.format_latex(result, true),
+            OutputFormat::Mmd => self.format_mmd(result),
+            OutputFormat::Html => self.format_html(result),
+            OutputFormat::Smiles => self.format_smiles(result),
+            OutputFormat::Docx => self.format_docx(result),
+            OutputFormat::MathML => self.format_mathml(result),
+            OutputFormat::AsciiMath => self.format_asciimath(result),
+        }
+    }
+
+    fn format_text(&self, result: &OcrResult) -> Result<String, String> {
+        if let Some(text) = &result.formats.text {
+            return Ok(text.clone());
+        }
+
+        // Fallback: extract text from line data
+        if let Some(line_data) = &result.line_data {
+            let text = line_data
+                .iter()
+                .map(|line| line.text.as_str())
+                .collect::<Vec<_>>()
+                .join("\n");
+            return Ok(text);
+        }
+
+        Err("No text content available".to_string())
+    }
+
+    fn format_latex(&self, result: &OcrResult, styled: bool) -> Result<String, String> {
+        let latex_content = if styled {
+            result
+                .formats
+                .latex_styled
+                .as_ref()
+                .or(result.formats.latex_normal.as_ref())
+        } else {
+            result.formats.latex_normal.as_ref()
+        };
+
+        if let Some(latex) = latex_content {
+            if styled {
+                // Wrap in document with packages
+                Ok(latex::LaTeXFormatter::new()
+                    .with_packages(vec![
+                        "amsmath".to_string(),
+                        "amssymb".to_string(),
+                        "graphicx".to_string(),
+                    ])
+                    .format_document(latex))
+            } else {
+                Ok(latex.clone())
+            }
+        } else {
+            Err("No LaTeX content available".to_string())
+        }
+    }
+
+    fn format_mmd(&self, result: &OcrResult) -> Result<String, String> {
+        if let Some(mmd) = &result.formats.mmd {
+            return Ok(mmd.clone());
+        }
+
+        // Generate MMD from line data
+        if let Some(line_data) = &result.line_data {
+            let formatter = mmd::MmdFormatter::with_delimiters(self.config.math_delimiters.clone());
+            return Ok(formatter.format(line_data));
+        }
+
+        Err("No MMD content available".to_string())
+    }
+
+    fn format_html(&self, result: &OcrResult) -> Result<String, String> {
+        if let Some(html) = &result.formats.html {
+            return Ok(html.clone());
+        }
+
+        // Generate HTML with math rendering
+        let content = self.format_text(result)?;
+        let formatter = html::HtmlFormatter::new()
+            .with_engine(self.config.html_engine)
+            .with_styling(self.config.pretty);
+
+        Ok(formatter.format(&content, result.line_data.as_deref()))
+    }
+
+    fn format_smiles(&self, result: &OcrResult) -> Result<String, String> {
+        if let Some(smiles) = &result.formats.smiles {
+            return Ok(smiles.clone());
+        }
+
+        // Generate SMILES if we have chemical structure data
+        let generator = smiles::SmilesGenerator::new();
+        generator.generate_from_result(result)
+    }
+
+    fn format_docx(&self, _result: &OcrResult) -> Result<String, String> {
+        // DOCX requires binary format, return placeholder
+        Err("DOCX format requires binary output - use save_docx() instead".to_string())
+    }
+
+    fn format_mathml(&self, result: &OcrResult) -> Result<String, String> {
+        if let Some(mathml) = &result.formats.mathml {
+            return Ok(mathml.clone());
+        }
+
+        Err("MathML generation not yet implemented".to_string())
+    }
+
+    fn format_asciimath(&self, result: &OcrResult) -> Result<String, String> {
+        if let Some(asciimath) = &result.formats.asciimath {
+            return Ok(asciimath.clone());
+        }
+
+        Err("AsciiMath conversion not yet implemented".to_string())
+    }
+
+    fn set_format_output(&self, formats: &mut FormatsData, format: OutputFormat, output: String) {
+        match format {
+            OutputFormat::Text => formats.text = Some(output),
+            OutputFormat::LaTeX => formats.latex_normal = Some(output),
+            OutputFormat::LaTeXStyled => formats.latex_styled = Some(output),
+            OutputFormat::Mmd => formats.mmd = Some(output),
+            OutputFormat::Html => formats.html = Some(output),
+            OutputFormat::Smiles => formats.smiles = Some(output),
+            OutputFormat::MathML => formats.mathml = Some(output),
+            OutputFormat::AsciiMath => formats.asciimath = Some(output),
+            OutputFormat::Docx => {} // Binary format, handled separately
+        }
+    }
+}
+
+impl Default for OutputFormatter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Builder for OutputFormatter configuration
+pub struct FormatterBuilder {
+    config: FormatterConfig,
+}
+
+impl FormatterBuilder {
+    pub fn new() -> Self {
+        Self {
+            config: FormatterConfig::default(),
+        }
+    }
+
+    pub fn formats(mut self, formats: Vec<OutputFormat>) -> Self {
+        self.config.formats = formats;
+        self
+    }
+
+    pub fn add_format(mut self, format: OutputFormat) -> Self {
+        self.config.formats.push(format);
+        self
+    }
+
+    pub fn pretty(mut self, pretty: bool) -> Self {
+        self.config.pretty = pretty;
+        self
+    }
+
+    pub fn include_confidence(mut self, include: bool) -> Self {
+        self.config.include_confidence = include;
+        self
+    }
+
+    pub fn include_bbox(mut self, include: bool) -> Self {
+        self.config.include_bbox = include;
+        self
+    }
+
+    pub fn math_delimiters(mut self, delimiters: MathDelimiters) -> Self {
+        self.config.math_delimiters = delimiters;
+        self
+    }
+
+    pub fn html_engine(mut self, engine: HtmlEngine) -> Self {
+        self.config.html_engine = engine;
+        self
+    }
+
+    pub fn streaming(mut self, streaming: bool) -> Self {
+        self.config.streaming = streaming;
+        self
+    }
+
+    pub fn build(self) -> OutputFormatter {
+        OutputFormatter::with_config(self.config)
+    }
+}
+
+impl Default for FormatterBuilder {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn create_test_result() -> OcrResult {
+        OcrResult {
+            request_id: "test_123".to_string(),
+            version: "3.0".to_string(),
+            image_width: 800,
+            image_height: 600,
+            is_printed: true,
+            is_handwritten: false,
+            auto_rotate_confidence: 0.95,
+            auto_rotate_degrees: 0,
+            confidence: 0.98,
+            confidence_rate: 0.97,
+            formats: FormatsData {
+                text: Some("E = mc^2".to_string()),
+                latex_normal: Some(r"E = mc^2".to_string()),
+                ..Default::default()
+            },
+            line_data: None,
+            error: None,
+            metadata: HashMap::new(),
+        }
+    }
+
+    #[test]
+    fn test_format_text() {
+        let formatter = OutputFormatter::new();
+        let result = create_test_result();
+
+        let output = formatter
+            .format_single(&result, OutputFormat::Text)
+            .unwrap();
+        assert_eq!(output, "E = mc^2");
+    }
+
+    #[test]
+    fn test_format_latex() {
+        let formatter = OutputFormatter::new();
+        let result = create_test_result();
+
+        let output = formatter
+            .format_single(&result, OutputFormat::LaTeX)
+            .unwrap();
+        assert!(output.contains("mc^2"));
+    }
+
+    #[test]
+    fn test_builder() {
+        let formatter = FormatterBuilder::new()
+            .add_format(OutputFormat::Text)
+            .add_format(OutputFormat::LaTeX)
+            .pretty(true)
+            .include_confidence(true)
+            .build();
+
+        assert_eq!(formatter.config.formats.len(), 2);
+        assert!(formatter.config.pretty);
+        assert!(formatter.config.include_confidence);
+    }
+
+    #[test]
+    fn test_batch_format() {
+        let formatter = OutputFormatter::new();
+        let results = vec![create_test_result(), create_test_result()];
+
+        let outputs = formatter.format_batch(&results).unwrap();
+        assert_eq!(outputs.len(), 2);
+    }
+}

examples/scipix/src/output/html.rs

@@ -0,0 +1,396 @@
+//! HTML output formatter with math rendering support
+
+use super::{HtmlEngine, LineData};
+
+/// HTML formatter with math rendering
+pub struct HtmlFormatter {
+    engine: HtmlEngine,
+    css_styling: bool,
+    accessibility: bool,
+    responsive: bool,
+    theme: HtmlTheme,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum HtmlTheme {
+    Light,
+    Dark,
+    Auto,
+}
+
+impl HtmlFormatter {
+    pub fn new() -> Self {
+        Self {
+            engine: HtmlEngine::MathJax,
+            css_styling: true,
+            accessibility: true,
+            responsive: true,
+            theme: HtmlTheme::Light,
+        }
+    }
+
+    pub fn with_engine(mut self, engine: HtmlEngine) -> Self {
+        self.engine = engine;
+        self
+    }
+
+    pub fn with_styling(mut self, styling: bool) -> Self {
+        self.css_styling = styling;
+        self
+    }
+
+    pub fn accessibility(mut self, enabled: bool) -> Self {
+        self.accessibility = enabled;
+        self
+    }
+
+    pub fn responsive(mut self, enabled: bool) -> Self {
+        self.responsive = enabled;
+        self
+    }
+
+    pub fn theme(mut self, theme: HtmlTheme) -> Self {
+        self.theme = theme;
+        self
+    }
+
+    /// Format content to HTML
+    pub fn format(&self, content: &str, lines: Option<&[LineData]>) -> String {
+        let mut html = String::new();
+
+        // HTML header with math rendering scripts
+        html.push_str(&self.html_header());
+
+        // Body start with theme class
+        html.push_str("<body");
+        if self.css_styling {
+            html.push_str(&format!(r#" class="theme-{:?}""#, self.theme).to_lowercase());
+        }
+        html.push_str(">\n");
+
+        // Main content container
+        html.push_str(r#"<div class="content">"#);
+        html.push_str("\n");
+
+        // Format content
+        if let Some(line_data) = lines {
+            html.push_str(&self.format_lines(line_data));
+        } else {
+            html.push_str(&self.format_text(content));
+        }
+
+        html.push_str("</div>\n");
+        html.push_str("</body>\n</html>");
+
+        html
+    }
+
+    /// Generate HTML header with scripts and styles
+    fn html_header(&self) -> String {
+        let mut header = String::from("<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n");
+        header.push_str(r#"    <meta charset="UTF-8">"#);
+        header.push_str("\n");
+
+        if self.responsive {
+            header.push_str(
+                r#"    <meta name="viewport" content="width=device-width, initial-scale=1.0">"#,
+            );
+            header.push_str("\n");
+        }
+
+        header.push_str("    <title>Mathematical Content</title>\n");
+
+        // Math rendering scripts
+        match self.engine {
+            HtmlEngine::MathJax => {
+                header.push_str(r#"    <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>"#);
+                header.push_str("\n");
+                header.push_str(r#"    <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>"#);
+                header.push_str("\n");
+                header.push_str("    <script>\n");
+                header.push_str("    MathJax = {\n");
+                header.push_str("        tex: {\n");
+                header.push_str(r#"            inlineMath: [['$', '$'], ['\\(', '\\)']],"#);
+                header.push_str("\n");
+                header.push_str(r#"            displayMath: [['$$', '$$'], ['\\[', '\\]']]"#);
+                header.push_str("\n");
+                header.push_str("        }\n");
+                header.push_str("    };\n");
+                header.push_str("    </script>\n");
+            }
+            HtmlEngine::KaTeX => {
+                header.push_str(r#"    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">"#);
+                header.push_str("\n");
+                header.push_str(r#"    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>"#);
+                header.push_str("\n");
+                header.push_str(r#"    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js" onload="renderMathInElement(document.body);"></script>"#);
+                header.push_str("\n");
+            }
+            HtmlEngine::Raw => {
+                // No math rendering
+            }
+        }
+
+        // CSS styling
+        if self.css_styling {
+            header.push_str("    <style>\n");
+            header.push_str(&self.generate_css());
+            header.push_str("    </style>\n");
+        }
+
+        header.push_str("</head>\n");
+        header
+    }
+
+    /// Generate CSS styles
+    fn generate_css(&self) -> String {
+        let mut css = String::new();
+
+        css.push_str("        body {\n");
+        css.push_str("            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n");
+        css.push_str("            line-height: 1.6;\n");
+        css.push_str("            max-width: 800px;\n");
+        css.push_str("            margin: 0 auto;\n");
+        css.push_str("            padding: 20px;\n");
+        css.push_str("        }\n");
+
+        // Theme colors
+        match self.theme {
+            HtmlTheme::Light => {
+                css.push_str("        body.theme-light {\n");
+                css.push_str("            background-color: #ffffff;\n");
+                css.push_str("            color: #333333;\n");
+                css.push_str("        }\n");
+            }
+            HtmlTheme::Dark => {
+                css.push_str("        body.theme-dark {\n");
+                css.push_str("            background-color: #1e1e1e;\n");
+                css.push_str("            color: #d4d4d4;\n");
+                css.push_str("        }\n");
+            }
+            HtmlTheme::Auto => {
+                css.push_str("        @media (prefers-color-scheme: dark) {\n");
+                css.push_str("            body { background-color: #1e1e1e; color: #d4d4d4; }\n");
+                css.push_str("        }\n");
+            }
+        }
+
+        css.push_str("        .content { padding: 20px; }\n");
+        css.push_str("        .math-display { text-align: center; margin: 20px 0; }\n");
+        css.push_str("        .math-inline { display: inline; }\n");
+        css.push_str("        .equation-block { margin: 15px 0; padding: 10px; background: #f5f5f5; border-radius: 4px; }\n");
+        css.push_str("        table { border-collapse: collapse; width: 100%; margin: 20px 0; }\n");
+        css.push_str(
+            "        th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }\n",
+        );
+        css.push_str("        th { background-color: #f2f2f2; }\n");
+
+        if self.accessibility {
+            css.push_str("        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }\n");
+        }
+
+        css
+    }
+
+    /// Format plain text to HTML
+    fn format_text(&self, text: &str) -> String {
+        let escaped = self.escape_html(text);
+
+        // Convert math delimiters if present
+        let mut html = escaped;
+
+        // Display math $$...$$
+        html = html.replace("$$", "<div class=\"math-display\">$$");
+        html = html.replace("$$", "$$</div>");
+
+        // Inline math $...$
+        // This is simplistic - a real implementation would need proper parsing
+
+        format!("<p>{}</p>", html)
+    }
+
+    /// Format line data to HTML
+    fn format_lines(&self, lines: &[LineData]) -> String {
+        let mut html = String::new();
+
+        for line in lines {
+            match line.line_type.as_str() {
+                "text" => {
+                    html.push_str("<p>");
+                    html.push_str(&self.escape_html(&line.text));
+                    html.push_str("</p>\n");
+                }
+                "math" | "equation" => {
+                    let latex = line.latex.as_ref().unwrap_or(&line.text);
+                    html.push_str(r#"<div class="math-display">"#);
+                    if self.accessibility {
+                        html.push_str(&format!(
+                            r#"<span class="sr-only">Equation: {}</span>"#,
+                            self.escape_html(&line.text)
+                        ));
+                    }
+                    html.push_str(&format!("$${}$$", latex));
+                    html.push_str("</div>\n");
+                }
+                "inline_math" => {
+                    let latex = line.latex.as_ref().unwrap_or(&line.text);
+                    html.push_str(&format!(r#"<span class="math-inline">${}$</span>"#, latex));
+                }
+                "heading" => {
+                    html.push_str(&format!("<h2>{}</h2>\n", self.escape_html(&line.text)));
+                }
+                "table" => {
+                    html.push_str(&self.format_table(&line.text));
+                }
+                "image" => {
+                    html.push_str(&format!(
+                        r#"<img src="{}" alt="Image" loading="lazy">"#,
+                        self.escape_html(&line.text)
+                    ));
+                    html.push_str("\n");
+                }
+                _ => {
+                    html.push_str("<p>");
+                    html.push_str(&self.escape_html(&line.text));
+                    html.push_str("</p>\n");
+                }
+            }
+        }
+
+        html
+    }
+
+    /// Format table to HTML
+    fn format_table(&self, table: &str) -> String {
+        let mut html = String::from("<table>\n");
+
+        let rows: Vec<&str> = table.lines().collect();
+        for (i, row) in rows.iter().enumerate() {
+            html.push_str("  <tr>\n");
+
+            let cells: Vec<&str> = row
+                .split('|')
+                .map(|s| s.trim())
+                .filter(|s| !s.is_empty())
+                .collect();
+
+            let tag = if i == 0 { "th" } else { "td" };
+
+            for cell in cells {
+                html.push_str(&format!(
+                    "    <{}>{}</{}>\n",
+                    tag,
+                    self.escape_html(cell),
+                    tag
+                ));
+            }
+
+            html.push_str("  </tr>\n");
+        }
+
+        html.push_str("</table>\n");
+        html
+    }
+
+    /// Escape HTML special characters
+    fn escape_html(&self, text: &str) -> String {
+        text.replace('&', "&amp;")
+            .replace('<', "&lt;")
+            .replace('>', "&gt;")
+            .replace('"', "&quot;")
+            .replace('\'', "&#39;")
+    }
+}
+
+impl Default for HtmlFormatter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::output::BoundingBox;
+
+    #[test]
+    fn test_html_header() {
+        let formatter = HtmlFormatter::new().with_engine(HtmlEngine::MathJax);
+        let header = formatter.html_header();
+
+        assert!(header.contains("<!DOCTYPE html>"));
+        assert!(header.contains("MathJax"));
+    }
+
+    #[test]
+    fn test_katex_header() {
+        let formatter = HtmlFormatter::new().with_engine(HtmlEngine::KaTeX);
+        let header = formatter.html_header();
+
+        assert!(header.contains("katex"));
+    }
+
+    #[test]
+    fn test_escape_html() {
+        let formatter = HtmlFormatter::new();
+        let result = formatter.escape_html("<script>alert('test')</script>");
+
+        assert!(result.contains("&lt;"));
+        assert!(result.contains("&gt;"));
+        assert!(!result.contains("<script>"));
+    }
+
+    #[test]
+    fn test_format_lines() {
+        let formatter = HtmlFormatter::new();
+        let lines = vec![
+            LineData {
+                line_type: "text".to_string(),
+                text: "Introduction".to_string(),
+                latex: None,
+                bbox: BoundingBox::new(0.0, 0.0, 100.0, 20.0),
+                confidence: 0.95,
+                words: None,
+            },
+            LineData {
+                line_type: "equation".to_string(),
+                text: "E = mc^2".to_string(),
+                latex: Some(r"E = mc^2".to_string()),
+                bbox: BoundingBox::new(0.0, 25.0, 100.0, 30.0),
+                confidence: 0.98,
+                words: None,
+            },
+        ];
+
+        let result = formatter.format_lines(&lines);
+        assert!(result.contains("<p>Introduction</p>"));
+        assert!(result.contains("math-display"));
+        assert!(result.contains("$$"));
+    }
+
+    #[test]
+    fn test_dark_theme() {
+        let formatter = HtmlFormatter::new().theme(HtmlTheme::Dark);
+        let css = formatter.generate_css();
+
+        assert!(css.contains("theme-dark"));
+        assert!(css.contains("#1e1e1e"));
+    }
+
+    #[test]
+    fn test_accessibility() {
+        let formatter = HtmlFormatter::new().accessibility(true);
+        let lines = vec![LineData {
+            line_type: "equation".to_string(),
+            text: "x squared".to_string(),
+            latex: Some("x^2".to_string()),
+            bbox: BoundingBox::new(0.0, 0.0, 100.0, 20.0),
+            confidence: 0.98,
+            words: None,
+        }];
+
+        let result = formatter.format_lines(&lines);
+        assert!(result.contains("sr-only"));
+        assert!(result.contains("Equation:"));
+    }
+}

examples/scipix/src/output/json.rs

@@ -0,0 +1,354 @@
+//! JSON API response formatter matching Scipix API specification
+
+use super::{FormatsData, LineData, OcrResult};
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use std::collections::HashMap;
+
+/// Complete API response matching Scipix format
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ApiResponse {
+    /// Request identifier
+    pub request_id: String,
+
+    /// API version
+    pub version: String,
+
+    /// Image information
+    pub image_width: u32,
+    pub image_height: u32,
+
+    /// Detection metadata
+    pub is_printed: bool,
+    pub is_handwritten: bool,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub auto_rotate_confidence: Option<f32>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub auto_rotate_degrees: Option<i32>,
+
+    /// Confidence metrics
+    pub confidence: f32,
+    pub confidence_rate: f32,
+
+    /// Available output formats
+    #[serde(flatten)]
+    pub formats: FormatsData,
+
+    /// Detailed line data
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub line_data: Option<Vec<LineData>>,
+
+    /// Error information
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub error: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub error_info: Option<ErrorInfo>,
+
+    /// Processing metadata
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub metadata: Option<HashMap<String, Value>>,
+}
+
+/// Error information structure
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ErrorInfo {
+    pub code: String,
+    pub message: String,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub details: Option<Value>,
+}
+
+impl ApiResponse {
+    /// Create response from OCR result
+    pub fn from_ocr_result(result: OcrResult) -> Self {
+        Self {
+            request_id: result.request_id,
+            version: result.version,
+            image_width: result.image_width,
+            image_height: result.image_height,
+            is_printed: result.is_printed,
+            is_handwritten: result.is_handwritten,
+            auto_rotate_confidence: Some(result.auto_rotate_confidence),
+            auto_rotate_degrees: Some(result.auto_rotate_degrees),
+            confidence: result.confidence,
+            confidence_rate: result.confidence_rate,
+            formats: result.formats,
+            line_data: result.line_data,
+            error: result.error,
+            error_info: None,
+            metadata: if result.metadata.is_empty() {
+                None
+            } else {
+                Some(result.metadata)
+            },
+        }
+    }
+
+    /// Create error response
+    pub fn error(request_id: String, code: &str, message: &str) -> Self {
+        Self {
+            request_id,
+            version: "3.0".to_string(),
+            image_width: 0,
+            image_height: 0,
+            is_printed: false,
+            is_handwritten: false,
+            auto_rotate_confidence: None,
+            auto_rotate_degrees: None,
+            confidence: 0.0,
+            confidence_rate: 0.0,
+            formats: FormatsData::default(),
+            line_data: None,
+            error: Some(message.to_string()),
+            error_info: Some(ErrorInfo {
+                code: code.to_string(),
+                message: message.to_string(),
+                details: None,
+            }),
+            metadata: None,
+        }
+    }
+
+    /// Convert to JSON string
+    pub fn to_json(&self) -> Result<String, String> {
+        serde_json::to_string(self).map_err(|e| format!("JSON serialization error: {}", e))
+    }
+
+    /// Convert to pretty JSON string
+    pub fn to_json_pretty(&self) -> Result<String, String> {
+        serde_json::to_string_pretty(self).map_err(|e| format!("JSON serialization error: {}", e))
+    }
+
+    /// Parse from JSON string
+    pub fn from_json(json: &str) -> Result<Self, String> {
+        serde_json::from_str(json).map_err(|e| format!("JSON parsing error: {}", e))
+    }
+}
+
+/// Batch API response
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct BatchApiResponse {
+    pub batch_id: String,
+    pub total: usize,
+    pub completed: usize,
+    pub results: Vec<ApiResponse>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub errors: Option<Vec<BatchError>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct BatchError {
+    pub index: usize,
+    pub error: ErrorInfo,
+}
+
+impl BatchApiResponse {
+    pub fn new(batch_id: String, results: Vec<ApiResponse>) -> Self {
+        let total = results.len();
+        let completed = results.iter().filter(|r| r.error.is_none()).count();
+
+        let errors: Vec<BatchError> = results
+            .iter()
+            .enumerate()
+            .filter_map(|(i, r)| {
+                r.error_info.as_ref().map(|e| BatchError {
+                    index: i,
+                    error: e.clone(),
+                })
+            })
+            .collect();
+
+        Self {
+            batch_id,
+            total,
+            completed,
+            results,
+            errors: if errors.is_empty() {
+                None
+            } else {
+                Some(errors)
+            },
+        }
+    }
+
+    pub fn to_json(&self) -> Result<String, String> {
+        serde_json::to_string(self).map_err(|e| format!("JSON serialization error: {}", e))
+    }
+
+    pub fn to_json_pretty(&self) -> Result<String, String> {
+        serde_json::to_string_pretty(self).map_err(|e| format!("JSON serialization error: {}", e))
+    }
+}
+
+/// API request format
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ApiRequest {
+    /// Image source (URL or base64)
+    pub src: String,
+
+    /// Requested output formats
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub formats: Option<Vec<String>>,
+
+    /// OCR options
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ocr: Option<OcrOptions>,
+
+    /// Additional metadata
+    #[serde(flatten)]
+    pub metadata: HashMap<String, Value>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct OcrOptions {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub math_inline_delimiters: Option<Vec<String>>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub math_display_delimiters: Option<Vec<String>>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub rm_spaces: Option<bool>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub rm_fonts: Option<bool>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub numbers_default_to_math: Option<bool>,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn create_test_result() -> OcrResult {
+        OcrResult {
+            request_id: "test_123".to_string(),
+            version: "3.0".to_string(),
+            image_width: 800,
+            image_height: 600,
+            is_printed: true,
+            is_handwritten: false,
+            auto_rotate_confidence: 0.95,
+            auto_rotate_degrees: 0,
+            confidence: 0.98,
+            confidence_rate: 0.97,
+            formats: FormatsData {
+                text: Some("E = mc^2".to_string()),
+                latex_normal: Some(r"E = mc^2".to_string()),
+                ..Default::default()
+            },
+            line_data: None,
+            error: None,
+            metadata: HashMap::new(),
+        }
+    }
+
+    #[test]
+    fn test_api_response_from_result() {
+        let result = create_test_result();
+        let response = ApiResponse::from_ocr_result(result);
+
+        assert_eq!(response.request_id, "test_123");
+        assert_eq!(response.version, "3.0");
+        assert_eq!(response.confidence, 0.98);
+        assert!(response.formats.text.is_some());
+    }
+
+    #[test]
+    fn test_api_response_to_json() {
+        let result = create_test_result();
+        let response = ApiResponse::from_ocr_result(result);
+        let json = response.to_json().unwrap();
+
+        assert!(json.contains("request_id"));
+        assert!(json.contains("test_123"));
+        assert!(json.contains("confidence"));
+    }
+
+    #[test]
+    fn test_api_response_round_trip() {
+        let result = create_test_result();
+        let response = ApiResponse::from_ocr_result(result);
+        let json = response.to_json().unwrap();
+        let parsed = ApiResponse::from_json(&json).unwrap();
+
+        assert_eq!(response.request_id, parsed.request_id);
+        assert_eq!(response.confidence, parsed.confidence);
+    }
+
+    #[test]
+    fn test_error_response() {
+        let response = ApiResponse::error(
+            "test_456".to_string(),
+            "invalid_image",
+            "Image format not supported",
+        );
+
+        assert_eq!(response.request_id, "test_456");
+        assert!(response.error.is_some());
+        assert!(response.error_info.is_some());
+
+        let error_info = response.error_info.unwrap();
+        assert_eq!(error_info.code, "invalid_image");
+    }
+
+    #[test]
+    fn test_batch_response() {
+        let result1 = create_test_result();
+        let result2 = create_test_result();
+
+        let responses = vec![
+            ApiResponse::from_ocr_result(result1),
+            ApiResponse::from_ocr_result(result2),
+        ];
+
+        let batch = BatchApiResponse::new("batch_789".to_string(), responses);
+
+        assert_eq!(batch.batch_id, "batch_789");
+        assert_eq!(batch.total, 2);
+        assert_eq!(batch.completed, 2);
+        assert!(batch.errors.is_none());
+    }
+
+    #[test]
+    fn test_batch_with_errors() {
+        let success = create_test_result();
+        let error_response =
+            ApiResponse::error("fail_1".to_string(), "timeout", "Processing timeout");
+
+        let responses = vec![ApiResponse::from_ocr_result(success), error_response];
+
+        let batch = BatchApiResponse::new("batch_error".to_string(), responses);
+
+        assert_eq!(batch.total, 2);
+        assert_eq!(batch.completed, 1);
+        assert!(batch.errors.is_some());
+        assert_eq!(batch.errors.unwrap().len(), 1);
+    }
+
+    #[test]
+    fn test_api_request() {
+        let request = ApiRequest {
+            src: "https://example.com/image.png".to_string(),
+            formats: Some(vec!["text".to_string(), "latex_styled".to_string()]),
+            ocr: Some(OcrOptions {
+                math_inline_delimiters: Some(vec!["$".to_string(), "$".to_string()]),
+                math_display_delimiters: Some(vec!["$$".to_string(), "$$".to_string()]),
+                rm_spaces: Some(true),
+                rm_fonts: None,
+                numbers_default_to_math: Some(false),
+            }),
+            metadata: HashMap::new(),
+        };
+
+        let json = serde_json::to_string(&request).unwrap();
+        assert!(json.contains("src"));
+        assert!(json.contains("formats"));
+    }
+}

examples/scipix/src/output/latex.rs

@@ -0,0 +1,430 @@
+//! LaTeX output formatter with styling and package management
+
+use super::LineData;
+
+/// LaTeX document formatter
+#[derive(Clone)]
+pub struct LaTeXFormatter {
+    packages: Vec<String>,
+    document_class: String,
+    preamble: String,
+    numbered_equations: bool,
+    custom_delimiters: Option<(String, String)>,
+}
+
+impl LaTeXFormatter {
+    pub fn new() -> Self {
+        Self {
+            packages: vec!["amsmath".to_string(), "amssymb".to_string()],
+            document_class: "article".to_string(),
+            preamble: String::new(),
+            numbered_equations: false,
+            custom_delimiters: None,
+        }
+    }
+
+    pub fn with_packages(mut self, packages: Vec<String>) -> Self {
+        self.packages = packages;
+        self
+    }
+
+    pub fn add_package(mut self, package: String) -> Self {
+        if !self.packages.contains(&package) {
+            self.packages.push(package);
+        }
+        self
+    }
+
+    pub fn document_class(mut self, class: String) -> Self {
+        self.document_class = class;
+        self
+    }
+
+    pub fn preamble(mut self, preamble: String) -> Self {
+        self.preamble = preamble;
+        self
+    }
+
+    pub fn numbered_equations(mut self, numbered: bool) -> Self {
+        self.numbered_equations = numbered;
+        self
+    }
+
+    pub fn custom_delimiters(mut self, start: String, end: String) -> Self {
+        self.custom_delimiters = Some((start, end));
+        self
+    }
+
+    /// Format plain LaTeX content
+    pub fn format(&self, latex: &str) -> String {
+        // Clean up LaTeX if needed
+        let cleaned = self.clean_latex(latex);
+
+        // Apply custom delimiters if specified
+        if let Some((start, end)) = &self.custom_delimiters {
+            format!("{}{}{}", start, cleaned, end)
+        } else {
+            cleaned
+        }
+    }
+
+    /// Format line data to LaTeX
+    pub fn format_lines(&self, lines: &[LineData]) -> String {
+        let mut output = String::new();
+        let mut in_align = false;
+
+        for line in lines {
+            match line.line_type.as_str() {
+                "text" => {
+                    if in_align {
+                        output.push_str("\\end{align*}\n\n");
+                        in_align = false;
+                    }
+                    output.push_str(&self.escape_text(&line.text));
+                    output.push_str("\n\n");
+                }
+                "math" | "equation" => {
+                    let latex = line.latex.as_ref().unwrap_or(&line.text);
+
+                    if self.numbered_equations {
+                        output.push_str("\\begin{equation}\n");
+                        output.push_str(latex.trim());
+                        output.push_str("\n\\end{equation}\n\n");
+                    } else {
+                        output.push_str("\\[\n");
+                        output.push_str(latex.trim());
+                        output.push_str("\n\\]\n\n");
+                    }
+                }
+                "inline_math" => {
+                    let latex = line.latex.as_ref().unwrap_or(&line.text);
+                    output.push_str(&format!("${}$", latex.trim()));
+                }
+                "align" => {
+                    if !in_align {
+                        output.push_str("\\begin{align*}\n");
+                        in_align = true;
+                    }
+                    let latex = line.latex.as_ref().unwrap_or(&line.text);
+                    output.push_str(latex.trim());
+                    output.push_str(" \\\\\n");
+                }
+                "table" => {
+                    output.push_str(&self.format_table(&line.text));
+                    output.push_str("\n\n");
+                }
+                _ => {
+                    output.push_str(&line.text);
+                    output.push_str("\n");
+                }
+            }
+        }
+
+        if in_align {
+            output.push_str("\\end{align*}\n");
+        }
+
+        output.trim().to_string()
+    }
+
+    /// Format complete LaTeX document
+    pub fn format_document(&self, content: &str) -> String {
+        let mut doc = String::new();
+
+        // Document class
+        doc.push_str(&format!("\\documentclass{{{}}}\n\n", self.document_class));
+
+        // Packages
+        for package in &self.packages {
+            doc.push_str(&format!("\\usepackage{{{}}}\n", package));
+        }
+        doc.push_str("\n");
+
+        // Custom preamble
+        if !self.preamble.is_empty() {
+            doc.push_str(&self.preamble);
+            doc.push_str("\n\n");
+        }
+
+        // Begin document
+        doc.push_str("\\begin{document}\n\n");
+
+        // Content
+        doc.push_str(content);
+        doc.push_str("\n\n");
+
+        // End document
+        doc.push_str("\\end{document}\n");
+
+        doc
+    }
+
+    /// Clean and normalize LaTeX
+    fn clean_latex(&self, latex: &str) -> String {
+        let mut cleaned = latex.to_string();
+
+        // Remove excessive whitespace
+        while cleaned.contains("  ") {
+            cleaned = cleaned.replace("  ", " ");
+        }
+
+        // Normalize line breaks
+        cleaned = cleaned.replace("\r\n", "\n");
+
+        // Ensure proper spacing around operators
+        for op in &["=", "+", "-", r"\times", r"\div"] {
+            let spaced = format!(" {} ", op);
+            cleaned = cleaned.replace(op, &spaced);
+        }
+
+        // Remove duplicate spaces again
+        while cleaned.contains("  ") {
+            cleaned = cleaned.replace("  ", " ");
+        }
+
+        cleaned.trim().to_string()
+    }
+
+    /// Escape special LaTeX characters in text
+    fn escape_text(&self, text: &str) -> String {
+        text.replace('\\', r"\\")
+            .replace('{', r"\{")
+            .replace('}', r"\}")
+            .replace('$', r"\$")
+            .replace('%', r"\%")
+            .replace('_', r"\_")
+            .replace('&', r"\&")
+            .replace('#', r"\#")
+            .replace('^', r"\^")
+            .replace('~', r"\~")
+    }
+
+    /// Format table to LaTeX tabular environment
+    fn format_table(&self, table: &str) -> String {
+        let rows: Vec<&str> = table.lines().collect();
+        if rows.is_empty() {
+            return String::new();
+        }
+
+        // Determine number of columns from first row
+        let num_cols = rows[0].split('|').filter(|s| !s.is_empty()).count();
+        let col_spec = "c".repeat(num_cols);
+
+        let mut output = format!("\\begin{{tabular}}{{{}}}\n", col_spec);
+        output.push_str("\\hline\n");
+
+        for (i, row) in rows.iter().enumerate() {
+            let cells: Vec<&str> = row
+                .split('|')
+                .map(|s| s.trim())
+                .filter(|s| !s.is_empty())
+                .collect();
+
+            output.push_str(&cells.join(" & "));
+            output.push_str(" \\\\\n");
+
+            if i == 0 {
+                output.push_str("\\hline\n");
+            }
+        }
+
+        output.push_str("\\hline\n");
+        output.push_str("\\end{tabular}");
+
+        output
+    }
+
+    /// Convert inline LaTeX to display math
+    pub fn inline_to_display(&self, latex: &str) -> String {
+        if self.numbered_equations {
+            format!("\\begin{{equation}}\n{}\n\\end{{equation}}", latex.trim())
+        } else {
+            format!("\\[\n{}\n\\]", latex.trim())
+        }
+    }
+
+    /// Add equation label
+    pub fn add_label(&self, latex: &str, label: &str) -> String {
+        format!("{}\n\\label{{{}}}", latex.trim(), label)
+    }
+}
+
+impl Default for LaTeXFormatter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Styled LaTeX formatter with predefined templates
+#[allow(dead_code)]
+pub struct StyledLaTeXFormatter {
+    base: LaTeXFormatter,
+    style: LaTeXStyle,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum LaTeXStyle {
+    Article,
+    Report,
+    Book,
+    Beamer,
+    Minimal,
+}
+
+impl StyledLaTeXFormatter {
+    pub fn new(style: LaTeXStyle) -> Self {
+        let base = match style {
+            LaTeXStyle::Article => LaTeXFormatter::new()
+                .document_class("article".to_string())
+                .with_packages(vec![
+                    "amsmath".to_string(),
+                    "amssymb".to_string(),
+                    "graphicx".to_string(),
+                    "hyperref".to_string(),
+                ]),
+            LaTeXStyle::Report => LaTeXFormatter::new()
+                .document_class("report".to_string())
+                .with_packages(vec![
+                    "amsmath".to_string(),
+                    "amssymb".to_string(),
+                    "graphicx".to_string(),
+                    "hyperref".to_string(),
+                    "geometry".to_string(),
+                ]),
+            LaTeXStyle::Book => LaTeXFormatter::new()
+                .document_class("book".to_string())
+                .with_packages(vec![
+                    "amsmath".to_string(),
+                    "amssymb".to_string(),
+                    "graphicx".to_string(),
+                    "hyperref".to_string(),
+                    "geometry".to_string(),
+                    "fancyhdr".to_string(),
+                ]),
+            LaTeXStyle::Beamer => LaTeXFormatter::new()
+                .document_class("beamer".to_string())
+                .with_packages(vec![
+                    "amsmath".to_string(),
+                    "amssymb".to_string(),
+                    "graphicx".to_string(),
+                ]),
+            LaTeXStyle::Minimal => LaTeXFormatter::new()
+                .document_class("article".to_string())
+                .with_packages(vec!["amsmath".to_string()]),
+        };
+
+        Self { base, style }
+    }
+
+    pub fn format_document(
+        &self,
+        content: &str,
+        title: Option<&str>,
+        author: Option<&str>,
+    ) -> String {
+        let mut preamble = String::new();
+
+        if let Some(t) = title {
+            preamble.push_str(&format!("\\title{{{}}}\n", t));
+        }
+        if let Some(a) = author {
+            preamble.push_str(&format!("\\author{{{}}}\n", a));
+        }
+        if title.is_some() || author.is_some() {
+            preamble.push_str("\\date{\\today}\n");
+        }
+
+        let formatter = self.base.clone().preamble(preamble);
+        let mut doc = formatter.format_document(content);
+
+        // Add maketitle after \begin{document} if we have title/author
+        if title.is_some() || author.is_some() {
+            doc = doc.replace(
+                "\\begin{document}\n\n",
+                "\\begin{document}\n\n\\maketitle\n\n",
+            );
+        }
+
+        doc
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::output::BoundingBox;
+
+    #[test]
+    fn test_format_simple() {
+        let formatter = LaTeXFormatter::new();
+        let result = formatter.format("E = mc^2");
+        assert!(result.contains("mc^2"));
+    }
+
+    #[test]
+    fn test_format_document() {
+        let formatter = LaTeXFormatter::new();
+        let doc = formatter.format_document("E = mc^2");
+
+        assert!(doc.contains(r"\documentclass{article}"));
+        assert!(doc.contains(r"\usepackage{amsmath}"));
+        assert!(doc.contains(r"\begin{document}"));
+        assert!(doc.contains("mc^2"));
+        assert!(doc.contains(r"\end{document}"));
+    }
+
+    #[test]
+    fn test_escape_text() {
+        let formatter = LaTeXFormatter::new();
+        let result = formatter.escape_text("Price: $100 & 50%");
+        assert!(result.contains(r"\$100"));
+        assert!(result.contains(r"\&"));
+        assert!(result.contains(r"\%"));
+    }
+
+    #[test]
+    fn test_inline_to_display() {
+        let formatter = LaTeXFormatter::new();
+        let result = formatter.inline_to_display("x^2 + y^2 = r^2");
+        assert!(result.contains(r"\["));
+        assert!(result.contains(r"\]"));
+    }
+
+    #[test]
+    fn test_styled_formatter() {
+        let formatter = StyledLaTeXFormatter::new(LaTeXStyle::Article);
+        let doc = formatter.format_document("Content", Some("My Title"), Some("Author Name"));
+
+        assert!(doc.contains(r"\title{My Title}"));
+        assert!(doc.contains(r"\author{Author Name}"));
+        assert!(doc.contains(r"\maketitle"));
+    }
+
+    #[test]
+    fn test_format_lines() {
+        let formatter = LaTeXFormatter::new();
+        let lines = vec![
+            LineData {
+                line_type: "text".to_string(),
+                text: "Introduction".to_string(),
+                latex: None,
+                bbox: BoundingBox::new(0.0, 0.0, 100.0, 20.0),
+                confidence: 0.95,
+                words: None,
+            },
+            LineData {
+                line_type: "equation".to_string(),
+                text: "E = mc^2".to_string(),
+                latex: Some(r"E = mc^2".to_string()),
+                bbox: BoundingBox::new(0.0, 25.0, 100.0, 30.0),
+                confidence: 0.98,
+                words: None,
+            },
+        ];
+
+        let result = formatter.format_lines(&lines);
+        assert!(result.contains("Introduction"));
+        assert!(result.contains(r"\[") || result.contains(r"\begin{equation}"));
+        assert!(result.contains("mc^2"));
+    }
+}

examples/scipix/src/output/mmd.rs

@@ -0,0 +1,379 @@
+//! Scipix Markdown (MMD) formatter
+//!
+//! MMD is an enhanced markdown format that supports:
+//! - Inline and display math with LaTeX
+//! - Tables with alignment
+//! - Chemistry notation (SMILES)
+//! - Image embedding
+//! - Structured documents
+
+use super::{LineData, MathDelimiters};
+
+/// Scipix Markdown formatter
+pub struct MmdFormatter {
+    delimiters: MathDelimiters,
+    include_metadata: bool,
+    preserve_structure: bool,
+}
+
+impl MmdFormatter {
+    pub fn new() -> Self {
+        Self {
+            delimiters: MathDelimiters::default(),
+            include_metadata: false,
+            preserve_structure: true,
+        }
+    }
+
+    pub fn with_delimiters(delimiters: MathDelimiters) -> Self {
+        Self {
+            delimiters,
+            include_metadata: false,
+            preserve_structure: true,
+        }
+    }
+
+    pub fn include_metadata(mut self, include: bool) -> Self {
+        self.include_metadata = include;
+        self
+    }
+
+    pub fn preserve_structure(mut self, preserve: bool) -> Self {
+        self.preserve_structure = preserve;
+        self
+    }
+
+    /// Format line data to MMD
+    pub fn format(&self, lines: &[LineData]) -> String {
+        let mut output = String::new();
+        let mut in_table = false;
+        let mut in_list = false;
+
+        for line in lines {
+            match line.line_type.as_str() {
+                "text" => {
+                    if in_table {
+                        output.push_str("\n");
+                        in_table = false;
+                    }
+                    if in_list && !line.text.trim_start().starts_with(&['-', '*', '1']) {
+                        output.push_str("\n");
+                        in_list = false;
+                    }
+                    output.push_str(&line.text);
+                    output.push_str("\n");
+                }
+                "math" | "equation" => {
+                    let latex = line.latex.as_ref().unwrap_or(&line.text);
+                    let formatted = self.format_math(latex, true); // display mode
+                    output.push_str(&formatted);
+                    output.push_str("\n\n");
+                }
+                "inline_math" => {
+                    let latex = line.latex.as_ref().unwrap_or(&line.text);
+                    let formatted = self.format_math(latex, false); // inline mode
+                    output.push_str(&formatted);
+                }
+                "table_row" => {
+                    if !in_table {
+                        in_table = true;
+                    }
+                    output.push_str(&self.format_table_row(&line.text));
+                    output.push_str("\n");
+                }
+                "list_item" => {
+                    if !in_list {
+                        in_list = true;
+                    }
+                    output.push_str(&line.text);
+                    output.push_str("\n");
+                }
+                "heading" => {
+                    output.push_str(&format!("# {}\n\n", line.text));
+                }
+                "image" => {
+                    output.push_str(&self.format_image(&line.text));
+                    output.push_str("\n\n");
+                }
+                "chemistry" => {
+                    let smiles = line.text.trim();
+                    output.push_str(&format!("```smiles\n{}\n```\n\n", smiles));
+                }
+                _ => {
+                    // Unknown type, output as text
+                    output.push_str(&line.text);
+                    output.push_str("\n");
+                }
+            }
+        }
+
+        output.trim().to_string()
+    }
+
+    /// Format LaTeX math expression
+    pub fn format_math(&self, latex: &str, display: bool) -> String {
+        if display {
+            format!(
+                "{}\n{}\n{}",
+                self.delimiters.display_start,
+                latex.trim(),
+                self.delimiters.display_end
+            )
+        } else {
+            format!(
+                "{}{}{}",
+                self.delimiters.inline_start,
+                latex.trim(),
+                self.delimiters.inline_end
+            )
+        }
+    }
+
+    /// Format table row
+    fn format_table_row(&self, row: &str) -> String {
+        // Basic table formatting - split by | and rejoin
+        let cells: Vec<&str> = row.split('|').map(|s| s.trim()).collect();
+        format!("| {} |", cells.join(" | "))
+    }
+
+    /// Format image reference
+    fn format_image(&self, path: &str) -> String {
+        // Extract alt text and path if available
+        if path.contains('[') && path.contains(']') {
+            path.to_string()
+        } else {
+            format!("![Image]({})", path)
+        }
+    }
+
+    /// Convert plain text with embedded LaTeX to MMD
+    pub fn from_mixed_text(&self, text: &str) -> String {
+        let mut output = String::new();
+        let mut current = String::new();
+        let mut in_math = false;
+        let mut display_math = false;
+
+        let chars: Vec<char> = text.chars().collect();
+        let mut i = 0;
+
+        while i < chars.len() {
+            // Check for display math $$
+            if i + 1 < chars.len() && chars[i] == '$' && chars[i + 1] == '$' {
+                if in_math && display_math {
+                    // End display math
+                    output.push_str(&self.format_math(&current, true));
+                    current.clear();
+                    in_math = false;
+                    display_math = false;
+                } else if !in_math {
+                    // Start display math
+                    if !current.is_empty() {
+                        output.push_str(&current);
+                        current.clear();
+                    }
+                    in_math = true;
+                    display_math = true;
+                }
+                i += 2;
+                continue;
+            }
+
+            // Check for inline math $
+            if chars[i] == '$' && !display_math {
+                if in_math {
+                    // End inline math
+                    output.push_str(&self.format_math(&current, false));
+                    current.clear();
+                    in_math = false;
+                } else {
+                    // Start inline math
+                    if !current.is_empty() {
+                        output.push_str(&current);
+                        current.clear();
+                    }
+                    in_math = true;
+                }
+                i += 1;
+                continue;
+            }
+
+            current.push(chars[i]);
+            i += 1;
+        }
+
+        if !current.is_empty() {
+            output.push_str(&current);
+        }
+
+        output
+    }
+
+    /// Format a complete document with frontmatter
+    pub fn format_document(&self, title: &str, content: &str, metadata: Option<&str>) -> String {
+        let mut doc = String::new();
+
+        // Add frontmatter if metadata provided
+        if let Some(meta) = metadata {
+            doc.push_str("---\n");
+            doc.push_str(meta);
+            doc.push_str("\n---\n\n");
+        }
+
+        // Add title
+        doc.push_str(&format!("# {}\n\n", title));
+
+        // Add content
+        doc.push_str(content);
+
+        doc
+    }
+}
+
+impl Default for MmdFormatter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Parse MMD back to structured data
+pub struct MmdParser;
+
+impl MmdParser {
+    pub fn new() -> Self {
+        Self
+    }
+
+    /// Parse MMD content and extract LaTeX expressions
+    pub fn extract_latex(&self, content: &str) -> Vec<(String, bool)> {
+        let mut expressions = Vec::new();
+        let mut current = String::new();
+        let mut in_math = false;
+        let mut display_math = false;
+
+        let chars: Vec<char> = content.chars().collect();
+        let mut i = 0;
+
+        while i < chars.len() {
+            if i + 1 < chars.len() && chars[i] == '$' && chars[i + 1] == '$' {
+                if in_math && display_math {
+                    expressions.push((current.trim().to_string(), true));
+                    current.clear();
+                    in_math = false;
+                    display_math = false;
+                } else if !in_math {
+                    in_math = true;
+                    display_math = true;
+                }
+                i += 2;
+            } else if chars[i] == '$' && !display_math {
+                if in_math {
+                    expressions.push((current.trim().to_string(), false));
+                    current.clear();
+                    in_math = false;
+                } else {
+                    in_math = true;
+                }
+                i += 1;
+            } else if in_math {
+                current.push(chars[i]);
+                i += 1;
+            } else {
+                i += 1;
+            }
+        }
+
+        expressions
+    }
+}
+
+impl Default for MmdParser {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::output::BoundingBox;
+
+    #[test]
+    fn test_format_inline_math() {
+        let formatter = MmdFormatter::new();
+        let result = formatter.format_math("E = mc^2", false);
+        assert_eq!(result, "$E = mc^2$");
+    }
+
+    #[test]
+    fn test_format_display_math() {
+        let formatter = MmdFormatter::new();
+        let result = formatter.format_math(r"\int_0^1 x^2 dx", true);
+        assert!(result.contains("$$"));
+        assert!(result.contains(r"\int_0^1 x^2 dx"));
+    }
+
+    #[test]
+    fn test_format_lines() {
+        let formatter = MmdFormatter::new();
+        let lines = vec![
+            LineData {
+                line_type: "text".to_string(),
+                text: "The equation".to_string(),
+                latex: None,
+                bbox: BoundingBox::new(0.0, 0.0, 100.0, 20.0),
+                confidence: 0.95,
+                words: None,
+            },
+            LineData {
+                line_type: "math".to_string(),
+                text: "E = mc^2".to_string(),
+                latex: Some(r"E = mc^2".to_string()),
+                bbox: BoundingBox::new(0.0, 25.0, 100.0, 30.0),
+                confidence: 0.98,
+                words: None,
+            },
+        ];
+
+        let result = formatter.format(&lines);
+        assert!(result.contains("The equation"));
+        assert!(result.contains("$$"));
+        assert!(result.contains("mc^2"));
+    }
+
+    #[test]
+    fn test_from_mixed_text() {
+        let formatter = MmdFormatter::new();
+        let text = "The formula $E = mc^2$ is famous.";
+        let result = formatter.from_mixed_text(text);
+        assert!(result.contains("$E = mc^2$"));
+        assert!(result.contains("famous"));
+    }
+
+    #[test]
+    fn test_extract_latex() {
+        let parser = MmdParser::new();
+        let content = "Text with $inline$ and $$display$$ math.";
+        let expressions = parser.extract_latex(content);
+
+        assert_eq!(expressions.len(), 2);
+        assert_eq!(expressions[0].0, "inline");
+        assert!(!expressions[0].1); // inline
+        assert_eq!(expressions[1].0, "display");
+        assert!(expressions[1].1); // display
+    }
+
+    #[test]
+    fn test_format_document() {
+        let formatter = MmdFormatter::new();
+        let doc = formatter.format_document(
+            "My Document",
+            "Content here",
+            Some("author: Test\ndate: 2025-01-01"),
+        );
+
+        assert!(doc.contains("---"));
+        assert!(doc.contains("author: Test"));
+        assert!(doc.contains("# My Document"));
+        assert!(doc.contains("Content here"));
+    }
+}

examples/scipix/src/output/mod.rs

@@ -0,0 +1,359 @@
+//! Output formatting module for Scipix OCR results
+//!
+//! Supports multiple output formats:
+//! - Text: Plain text extraction
+//! - LaTeX: Mathematical notation
+//! - Scipix Markdown (mmd): Enhanced markdown with math
+//! - MathML: XML-based mathematical markup
+//! - HTML: Web-ready output with math rendering
+//! - SMILES: Chemical structure notation
+//! - DOCX: Microsoft Word format (Office Math ML)
+
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+
+pub mod docx;
+pub mod formatter;
+pub mod html;
+pub mod json;
+pub mod latex;
+pub mod mmd;
+pub mod smiles;
+
+pub use formatter::{HtmlEngine, MathDelimiters, OutputFormatter};
+pub use json::ApiResponse;
+
+/// Output format types supported by Scipix OCR
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum OutputFormat {
+    /// Plain text output
+    Text,
+    /// LaTeX mathematical notation
+    #[serde(rename = "latex_normal")]
+    LaTeX,
+    /// Styled LaTeX with custom packages
+    #[serde(rename = "latex_styled")]
+    LaTeXStyled,
+    /// Mathematical Markup Language
+    #[serde(rename = "mathml")]
+    MathML,
+    /// Scipix Markdown (enhanced markdown)
+    #[serde(rename = "mmd")]
+    Mmd,
+    /// ASCII Math notation
+    #[serde(rename = "asciimath")]
+    AsciiMath,
+    /// HTML with embedded math
+    Html,
+    /// Chemical structure notation
+    #[serde(rename = "smiles")]
+    Smiles,
+    /// Microsoft Word format
+    Docx,
+}
+
+impl OutputFormat {
+    /// Get the file extension for this format
+    pub fn extension(&self) -> &'static str {
+        match self {
+            OutputFormat::Text => "txt",
+            OutputFormat::LaTeX | OutputFormat::LaTeXStyled => "tex",
+            OutputFormat::MathML => "xml",
+            OutputFormat::Mmd => "mmd",
+            OutputFormat::AsciiMath => "txt",
+            OutputFormat::Html => "html",
+            OutputFormat::Smiles => "smi",
+            OutputFormat::Docx => "docx",
+        }
+    }
+
+    /// Get the MIME type for this format
+    pub fn mime_type(&self) -> &'static str {
+        match self {
+            OutputFormat::Text | OutputFormat::AsciiMath => "text/plain",
+            OutputFormat::LaTeX | OutputFormat::LaTeXStyled => "application/x-latex",
+            OutputFormat::MathML => "application/mathml+xml",
+            OutputFormat::Mmd => "text/markdown",
+            OutputFormat::Html => "text/html",
+            OutputFormat::Smiles => "chemical/x-daylight-smiles",
+            OutputFormat::Docx => {
+                "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
+            }
+        }
+    }
+}
+
+/// Complete OCR result with all possible output formats
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct OcrResult {
+    /// Request identifier
+    pub request_id: String,
+
+    /// Version of the OCR engine
+    pub version: String,
+
+    /// Image dimensions
+    pub image_width: u32,
+    pub image_height: u32,
+
+    /// Processing status
+    pub is_printed: bool,
+    pub is_handwritten: bool,
+    pub auto_rotate_confidence: f32,
+    pub auto_rotate_degrees: i32,
+
+    /// Confidence scores
+    pub confidence: f32,
+    pub confidence_rate: f32,
+
+    /// Available output formats
+    pub formats: FormatsData,
+
+    /// Detailed line and word data
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub line_data: Option<Vec<LineData>>,
+
+    /// Error information if processing failed
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub error: Option<String>,
+
+    /// Processing metadata
+    #[serde(flatten)]
+    pub metadata: HashMap<String, serde_json::Value>,
+}
+
+/// All available output format data
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+pub struct FormatsData {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub text: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub latex_normal: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub latex_styled: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub latex_simplified: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub mathml: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub asciimath: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub mmd: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub html: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub smiles: Option<String>,
+}
+
+/// Line-level OCR data with positioning
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct LineData {
+    /// Line type: text, math, table, image, etc.
+    #[serde(rename = "type")]
+    pub line_type: String,
+
+    /// Content in various formats
+    pub text: String,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub latex: Option<String>,
+
+    /// Bounding box coordinates
+    pub bbox: BoundingBox,
+
+    /// Confidence score
+    pub confidence: f32,
+
+    /// Word-level data
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub words: Option<Vec<WordData>>,
+}
+
+/// Word-level OCR data
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct WordData {
+    pub text: String,
+    pub bbox: BoundingBox,
+    pub confidence: f32,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub latex: Option<String>,
+}
+
+/// Bounding box coordinates (x, y, width, height)
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
+pub struct BoundingBox {
+    pub x: f32,
+    pub y: f32,
+    pub width: f32,
+    pub height: f32,
+}
+
+impl BoundingBox {
+    pub fn new(x: f32, y: f32, width: f32, height: f32) -> Self {
+        Self {
+            x,
+            y,
+            width,
+            height,
+        }
+    }
+
+    pub fn area(&self) -> f32 {
+        self.width * self.height
+    }
+
+    pub fn center(&self) -> (f32, f32) {
+        (self.x + self.width / 2.0, self.y + self.height / 2.0)
+    }
+}
+
+/// Convert between output formats
+pub fn convert_format(
+    content: &str,
+    from: OutputFormat,
+    to: OutputFormat,
+) -> Result<String, String> {
+    // Simple pass-through for same format
+    if from == to {
+        return Ok(content.to_string());
+    }
+
+    // Format-specific conversions
+    match (from, to) {
+        (OutputFormat::LaTeX, OutputFormat::Text) => {
+            // Strip LaTeX commands for plain text
+            Ok(strip_latex(content))
+        }
+        (OutputFormat::Mmd, OutputFormat::LaTeX) => {
+            // Extract LaTeX from markdown
+            Ok(extract_latex_from_mmd(content))
+        }
+        (OutputFormat::LaTeX, OutputFormat::Html) => {
+            // Wrap LaTeX in HTML with MathJax
+            Ok(format!(
+                r#"<!DOCTYPE html>
+<html>
+<head>
+    <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+    <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
+</head>
+<body>
+    <p>\({}\)</p>
+</body>
+</html>"#,
+                content
+            ))
+        }
+        _ => Err(format!(
+            "Conversion from {:?} to {:?} not supported",
+            from, to
+        )),
+    }
+}
+
+fn strip_latex(content: &str) -> String {
+    // Remove common LaTeX commands
+    let mut result = content.to_string();
+
+    // Remove math delimiters
+    result = result.replace("\\(", "").replace("\\)", "");
+    result = result.replace("\\[", "").replace("\\]", "");
+    result = result.replace("$$", "");
+
+    // Remove common commands but keep their content
+    for cmd in &["\\text", "\\mathrm", "\\mathbf", "\\mathit"] {
+        result = result.replace(&format!("{}{}", cmd, "{"), "");
+    }
+    result = result.replace("}", "");
+
+    // Remove standalone commands
+    for cmd in &["\\\\", "\\,", "\\;", "\\:", "\\!", "\\quad", "\\qquad"] {
+        result = result.replace(cmd, " ");
+    }
+
+    result.trim().to_string()
+}
+
+fn extract_latex_from_mmd(content: &str) -> String {
+    let mut latex_parts = Vec::new();
+    let mut in_math = false;
+    let mut current = String::new();
+
+    let chars: Vec<char> = content.chars().collect();
+    let mut i = 0;
+
+    while i < chars.len() {
+        if i + 1 < chars.len() && chars[i] == '$' && chars[i + 1] == '$' {
+            if in_math {
+                latex_parts.push(current.clone());
+                current.clear();
+                in_math = false;
+            } else {
+                in_math = true;
+            }
+            i += 2;
+        } else if chars[i] == '$' {
+            in_math = !in_math;
+            i += 1;
+        } else if in_math {
+            current.push(chars[i]);
+            i += 1;
+        } else {
+            i += 1;
+        }
+    }
+
+    latex_parts.join("\n\n")
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_output_format_extension() {
+        assert_eq!(OutputFormat::Text.extension(), "txt");
+        assert_eq!(OutputFormat::LaTeX.extension(), "tex");
+        assert_eq!(OutputFormat::Html.extension(), "html");
+        assert_eq!(OutputFormat::Mmd.extension(), "mmd");
+    }
+
+    #[test]
+    fn test_output_format_mime_type() {
+        assert_eq!(OutputFormat::Text.mime_type(), "text/plain");
+        assert_eq!(OutputFormat::LaTeX.mime_type(), "application/x-latex");
+        assert_eq!(OutputFormat::Html.mime_type(), "text/html");
+    }
+
+    #[test]
+    fn test_bounding_box() {
+        let bbox = BoundingBox::new(10.0, 20.0, 100.0, 50.0);
+        assert_eq!(bbox.area(), 5000.0);
+        assert_eq!(bbox.center(), (60.0, 45.0));
+    }
+
+    #[test]
+    fn test_strip_latex() {
+        let input = r"\text{Hello } \mathbf{World}";
+        let output = strip_latex(input);
+        assert!(output.contains("Hello"));
+        assert!(output.contains("World"));
+    }
+
+    #[test]
+    fn test_convert_same_format() {
+        let content = "test content";
+        let result = convert_format(content, OutputFormat::Text, OutputFormat::Text).unwrap();
+        assert_eq!(result, content);
+    }
+}

examples/scipix/src/output/smiles.rs

@@ -0,0 +1,347 @@
+//! SMILES (Simplified Molecular Input Line Entry System) generator
+//!
+//! Converts chemical structure representations to SMILES notation.
+//! This is a simplified implementation - full chemistry support requires
+//! dedicated chemistry libraries like RDKit or OpenBabel.
+
+use super::OcrResult;
+
+/// SMILES notation generator for chemical structures
+pub struct SmilesGenerator {
+    canonical: bool,
+    include_stereochemistry: bool,
+}
+
+impl SmilesGenerator {
+    pub fn new() -> Self {
+        Self {
+            canonical: true,
+            include_stereochemistry: true,
+        }
+    }
+
+    pub fn canonical(mut self, canonical: bool) -> Self {
+        self.canonical = canonical;
+        self
+    }
+
+    pub fn stereochemistry(mut self, include: bool) -> Self {
+        self.include_stereochemistry = include;
+        self
+    }
+
+    /// Generate SMILES from OCR result
+    pub fn generate_from_result(&self, result: &OcrResult) -> Result<String, String> {
+        // Check if SMILES already available
+        if let Some(smiles) = &result.formats.smiles {
+            return Ok(smiles.clone());
+        }
+
+        // Check for chemistry-related content in line data
+        if let Some(line_data) = &result.line_data {
+            for line in line_data {
+                if line.line_type == "chemistry" || line.line_type == "molecule" {
+                    return self.parse_chemical_notation(&line.text);
+                }
+            }
+        }
+
+        Err("No chemical structure data found".to_string())
+    }
+
+    /// Parse chemical notation to SMILES
+    /// This is a placeholder - real implementation needs chemistry parsing
+    fn parse_chemical_notation(&self, notation: &str) -> Result<String, String> {
+        // Check if already SMILES format
+        if self.is_smiles(notation) {
+            return Ok(notation.to_string());
+        }
+
+        // Try to parse common chemical formulas
+        if let Some(smiles) = self.simple_formula_to_smiles(notation) {
+            return Ok(smiles);
+        }
+
+        Err(format!("Cannot convert '{}' to SMILES", notation))
+    }
+
+    /// Check if string is already SMILES notation
+    fn is_smiles(&self, s: &str) -> bool {
+        // Basic SMILES characters
+        let smiles_chars = "CNOPSFClBrI[]()=#@+-0123456789cnops";
+        s.chars().all(|c| smiles_chars.contains(c))
+    }
+
+    /// Convert simple chemical formulas to SMILES
+    fn simple_formula_to_smiles(&self, formula: &str) -> Option<String> {
+        // Common chemical formulas
+        match formula.trim() {
+            "H2O" | "water" => Some("O".to_string()),
+            "CO2" | "carbon dioxide" => Some("O=C=O".to_string()),
+            "CH4" | "methane" => Some("C".to_string()),
+            "C2H6" | "ethane" => Some("CC".to_string()),
+            "C2H5OH" | "ethanol" => Some("CCO".to_string()),
+            "CH3COOH" | "acetic acid" => Some("CC(=O)O".to_string()),
+            "C6H6" | "benzene" => Some("c1ccccc1".to_string()),
+            "C6H12O6" | "glucose" => Some("OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O".to_string()),
+            "NH3" | "ammonia" => Some("N".to_string()),
+            "H2SO4" | "sulfuric acid" => Some("OS(=O)(=O)O".to_string()),
+            "NaCl" | "sodium chloride" => Some("[Na+].[Cl-]".to_string()),
+            _ => None,
+        }
+    }
+
+    /// Validate SMILES notation
+    pub fn validate(&self, smiles: &str) -> Result<(), String> {
+        // Basic validation checks
+
+        // Check parentheses balance
+        let mut depth = 0;
+        for c in smiles.chars() {
+            match c {
+                '(' => depth += 1,
+                ')' => {
+                    depth -= 1;
+                    if depth < 0 {
+                        return Err("Unbalanced parentheses".to_string());
+                    }
+                }
+                _ => {}
+            }
+        }
+        if depth != 0 {
+            return Err("Unbalanced parentheses".to_string());
+        }
+
+        // Check brackets balance
+        let mut depth = 0;
+        for c in smiles.chars() {
+            match c {
+                '[' => depth += 1,
+                ']' => {
+                    depth -= 1;
+                    if depth < 0 {
+                        return Err("Unbalanced brackets".to_string());
+                    }
+                }
+                _ => {}
+            }
+        }
+        if depth != 0 {
+            return Err("Unbalanced brackets".to_string());
+        }
+
+        Ok(())
+    }
+
+    /// Convert SMILES to molecular formula
+    pub fn to_molecular_formula(&self, smiles: &str) -> Result<String, String> {
+        self.validate(smiles)?;
+
+        // Simplified formula extraction
+        // Real implementation would parse the SMILES properly
+        let mut counts: std::collections::HashMap<char, usize> = std::collections::HashMap::new();
+
+        for c in smiles.chars() {
+            if c.is_alphabetic() && c.is_uppercase() {
+                *counts.entry(c).or_insert(0) += 1;
+            }
+        }
+
+        let mut formula = String::new();
+        // Only use single-character elements for simplicity
+        for element in &['C', 'H', 'N', 'O', 'S', 'P', 'F'] {
+            if let Some(&count) = counts.get(element) {
+                formula.push(*element);
+                if count > 1 {
+                    formula.push_str(&count.to_string());
+                }
+            }
+        }
+
+        if formula.is_empty() {
+            Err("Could not determine molecular formula".to_string())
+        } else {
+            Ok(formula)
+        }
+    }
+
+    /// Calculate molecular weight (approximate)
+    pub fn molecular_weight(&self, smiles: &str) -> Result<f32, String> {
+        self.validate(smiles)?;
+
+        // Simplified atomic weights
+        let weights: std::collections::HashMap<char, f32> = [
+            ('C', 12.01),
+            ('H', 1.008),
+            ('N', 14.01),
+            ('O', 16.00),
+            ('S', 32.07),
+            ('P', 30.97),
+            ('F', 19.00),
+        ]
+        .iter()
+        .cloned()
+        .collect();
+
+        let mut total_weight = 0.0;
+
+        for c in smiles.chars() {
+            if let Some(&weight) = weights.get(&c) {
+                total_weight += weight;
+            }
+        }
+
+        Ok(total_weight)
+    }
+}
+
+impl Default for SmilesGenerator {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// SMILES parser for extracting structure information
+pub struct SmilesParser;
+
+impl SmilesParser {
+    pub fn new() -> Self {
+        Self
+    }
+
+    /// Count atoms in SMILES notation
+    pub fn count_atoms(&self, smiles: &str) -> std::collections::HashMap<String, usize> {
+        let mut counts = std::collections::HashMap::new();
+
+        let mut i = 0;
+        let chars: Vec<char> = smiles.chars().collect();
+
+        while i < chars.len() {
+            if chars[i].is_uppercase() {
+                let mut atom = String::from(chars[i]);
+
+                // Check for two-letter atoms (Cl, Br, etc.)
+                if i + 1 < chars.len() && chars[i + 1].is_lowercase() {
+                    atom.push(chars[i + 1]);
+                    i += 1;
+                }
+
+                *counts.entry(atom).or_insert(0) += 1;
+            }
+            i += 1;
+        }
+
+        counts
+    }
+
+    /// Extract ring information
+    pub fn find_rings(&self, smiles: &str) -> Vec<usize> {
+        let mut rings = Vec::new();
+
+        for (_i, c) in smiles.chars().enumerate() {
+            if c.is_numeric() {
+                if let Some(digit) = c.to_digit(10) {
+                    rings.push(digit as usize);
+                }
+            }
+        }
+
+        rings
+    }
+}
+
+impl Default for SmilesParser {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_is_smiles() {
+        let gen = SmilesGenerator::new();
+
+        assert!(gen.is_smiles("CCO"));
+        assert!(gen.is_smiles("c1ccccc1"));
+        assert!(gen.is_smiles("CC(=O)O"));
+        assert!(!gen.is_smiles("not smiles!"));
+    }
+
+    #[test]
+    fn test_simple_formula_conversion() {
+        let gen = SmilesGenerator::new();
+
+        assert_eq!(gen.simple_formula_to_smiles("H2O"), Some("O".to_string()));
+        assert_eq!(
+            gen.simple_formula_to_smiles("CO2"),
+            Some("O=C=O".to_string())
+        );
+        assert_eq!(gen.simple_formula_to_smiles("CH4"), Some("C".to_string()));
+        assert_eq!(
+            gen.simple_formula_to_smiles("benzene"),
+            Some("c1ccccc1".to_string())
+        );
+    }
+
+    #[test]
+    fn test_validate_smiles() {
+        let gen = SmilesGenerator::new();
+
+        assert!(gen.validate("CCO").is_ok());
+        assert!(gen.validate("CC(O)C").is_ok());
+        assert!(gen.validate("c1ccccc1").is_ok());
+
+        assert!(gen.validate("CC(O").is_err()); // Unbalanced
+        assert!(gen.validate("CC)O").is_err()); // Unbalanced
+    }
+
+    #[test]
+    fn test_molecular_formula() {
+        let gen = SmilesGenerator::new();
+
+        let formula = gen.to_molecular_formula("CCO").unwrap();
+        assert!(formula.contains('C'));
+        assert!(formula.contains('O'));
+    }
+
+    #[test]
+    fn test_molecular_weight() {
+        let gen = SmilesGenerator::new();
+
+        // Water: H2O (but SMILES is just "O", representing OH2)
+        let weight = gen.molecular_weight("O").unwrap();
+        assert!(weight > 0.0);
+
+        // Ethanol: C2H6O
+        let weight = gen.molecular_weight("CCO").unwrap();
+        assert!(weight > 30.0); // Should be around 46
+    }
+
+    #[test]
+    fn test_count_atoms() {
+        let parser = SmilesParser::new();
+
+        let counts = parser.count_atoms("CCO");
+        assert_eq!(counts.get("C"), Some(&2));
+        assert_eq!(counts.get("O"), Some(&1));
+
+        let counts = parser.count_atoms("CC(=O)O");
+        assert_eq!(counts.get("C"), Some(&2));
+        assert_eq!(counts.get("O"), Some(&2));
+    }
+
+    #[test]
+    fn test_find_rings() {
+        let parser = SmilesParser::new();
+
+        let rings = parser.find_rings("c1ccccc1");
+        assert_eq!(rings, vec![1, 1]);
+
+        let rings = parser.find_rings("C1CC1");
+        assert_eq!(rings, vec![1, 1]);
+    }
+}