opencv：累加图像求平均（c语言版本）

//OpenCV中如何累加多幅图像并取平均值
#include "cv.h"
#include "highgui.h"
int main(int argc,char *argv[])
{
IplImage * img1 = cvLoadImage("C:\\hello\\1.bmp");
IplImage * img2 = cvLoadImage("C:\\hello\\2.bmp");
IplImage * img3 = cvLoadImage("C:\\hello\\3.bmp");

IplImage * img_sum = cvCreateImage(cvGetSize(img2),IPL_DEPTH_32F,3);
cvZero(img_sum);

cvAcc(img1,img_sum);
cvAcc(img2,img_sum);
cvAcc(img3,img_sum);

IplImage * img_sum_gray = cvCreateImage(cvGetSize(img2),IPL_DEPTH_8U,3);

cvConvertScale(img_sum,img_sum_gray,1.0/3.0);

cvNamedWindow("img_sum_gray");
cvShowImage("img_sum_gray",img_sum_gray);
cvWaitKey(0);

cvSaveImage("img_sum_gray.png",img_sum_gray);

cvDestroyAllWindows();

cvReleaseImage(&img1);
cvReleaseImage(&img2);
cvReleaseImage(&img3);
cvReleaseImage(&img_sum);
cvReleaseImage(&img_sum_gray);

return 0;
}