/* 	程序名：Cjbsb.c
功能：读入图像文件，甄别图像的角标
*/
#include <cv.h>  
#include <highgui.h> 
#include <stdlib.h>
#include <stdio.h>

extern IplImage* src;

IplImage* Cjbsb(IplImage* img, IplImage* imgjbsb, int jbwhite, int jbblack)
{
	/*定义变量*/
	int i, j, jbi = 0, jbj = 0;
	int height, width, step, channels;
	uchar *data;
	int brklab = 0;
	/* 获取图像信息*/
	height = img->height;
	width = img->width;
	step = img->widthStep;
	channels = img->nChannels;
	data = (uchar *)img->imageData;

	//    IplImage* imgjbsb = cvCreateImage(cvGetSize(img),img->depth,img->nChannels);
	cvCopy(img, imgjbsb, NULL);
	uchar *imgjbsbdata = (uchar *)imgjbsb->imageData;

	//以角标为起点进行裁剪与画框
	CvSize jbcjsize = cvSize(835, 165);           //角标裁剪框的大小，宽为835象素，高为165象素
	IplImage* imgjbcj = cvCreateImage(jbcjsize, img->depth, img->nChannels);
	uchar *imgjbcjdata = (uchar *)imgjbcj->imageData;
	int jbcjstep = imgjbcj->widthStep;
	int jbcjchannels = imgjbcj->nChannels;
	for (i = 0; i<165; i++)
		for (j = 0; j<835; j++)
			imgjbcjdata[i*jbcjstep + j*jbcjchannels] = data[(i + jbi)*step + (j + jbj)*channels];
	for (i = 0; i<165; i = i + 2)
	{
		imgjbsbdata[(i + jbi)*step + jbj*channels] = 0;
		imgjbsbdata[(i + jbi)*step + (jbj + 835)*channels] = 0;
	}
	for (j = 0; j<835; j = j + 2)
	{
		imgjbsbdata[jbi*step + (j + jbj)*channels] = 0;
		imgjbsbdata[(jbi + 165)*step + (j + jbj)*channels] = 0;
	}

	return imgjbcj;
}