OpenCv图像差分

//图像差分 #include <stdio.h> #include <stdlib.h> #include "cv.h" #include "highgui.h" void Image_Minus(IplImage *X, IplImage *Y, IplImage *X_Y) { //图像差分函数，将图像1中像素和图像2中对应像素想减，要求X、Y、X_Y大小相同 int i,j,width,height,step,chanel; unsigned char *dataX, *dataY, *dataX_Y; width = X->width; height = X->height; dataX = (unsigned char *)X->imageData; dataY = (unsigned char *)Y->imageData; dataX_Y = (unsigned char *)X_Y->imageData; step = X->widthStep/sizeof(char); chanel = X->nChannels; for(i=0; i<height; i++) for(j=0; j<width*chanel; j++) dataX_Y[i*step+j] = abs( dataX[i*step+j] - dataY[i*step+j]); } int main() { IplImage* pImgX; IplImage* pImgY; IplImage* pImgX_Y; CvSize dest_size; pImgX = cvLoadImage("D://bishe//07_31_10_09_41_08.bmp", -1); pImgY = cvLoadImage("D://bishe//07_31_10_11_40_48.bmp", -1); if(pImgX==0 || pImgY==0) { printf("载入文件失败！/n"); return -1; } dest_size.width = pImgX->width; dest_size.height = pImgX->height; pImgX_Y = cvCreateImage(dest_size, pImgX->depth, pImgX->nChannels); //图像差分 Image_Minus(pImgX, pImgY, pImgX_Y); //创建窗口 cvNamedWindow("Picture X:", 1); cvNamedWindow("Picture Y:", 1); cvNamedWindow("Picture X-Y:", 1); //显示图像 cvShowImage("Picture X:", pImgX); cvShowImage("Picture Y:", pImgY); cvShowImage("Picture X-Y:", pImgX_Y); cvWaitKey(0); //销毁窗口 cvDestroyWindow("Picture X:"); cvDestroyWindow("Picture Y:"); cvDestroyWindow("Picture X-Y:"); //释放图像 cvReleaseImage(&pImgX); cvReleaseImage(&pImgY); cvReleaseImage(&pImgX_Y); return 0; }