47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
/* 程序名：outline.c
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功能：输入文字图像。得到相应的轮廓图
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*/
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#include <cv.h>
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#include <highgui.h>
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#include <stdlib.h>
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#include <stdio.h>
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IplImage* outline(IplImage* imgbj){
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/*定义变量*/
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int i,j;
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int height,width,step,channels;
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uchar *data;
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/*定义新的图像*/
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IplImage* imglk = cvCreateImage(cvGetSize(imgbj),imgbj->depth,imgbj->nChannels);
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/* 获取图像信息*/
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height = imgbj->height;
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width = imgbj->width;
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step = imgbj->widthStep;
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channels = imgbj->nChannels;
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data = (uchar *)imgbj->imageData;
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// printf("--outline--");
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for(j=0;j<height;j++){
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for(int i=0;i<width;i++){
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imglk->imageData[j*step+i*channels]=255;
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}
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for( i=0;i<width-1;i++){
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if(data[j*step+(i+1)*channels]-data[j*step+i*channels]==255) //竖线右侧框
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imglk->imageData[j*step+i*channels]=0;
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else if(data[j*step+i*channels]-data[j*step+(i+1)*channels]==255) //竖线左侧框
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imglk->imageData[j*step+(i+1)*channels]=0;
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}
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}
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for(i=0;i<width;i++){
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for(j=0;j<height-1;j++){
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if(data[j*step+i*channels]-data[(j+1)*step+i*channels]==255) //横线下侧框
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imglk->imageData[(j+1)*step+i*channels]=0;
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else if(data[(j+1)*step+i*channels]-data[j*step+i*channels]==255) //横线上侧框
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imglk->imageData[j*step+i*channels]=0;
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}
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}
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return imglk;
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} |