OPENCV统计比较图像亮度

统计比较图像亮度

int main(){    IplImage* imgA = cvLoadImage ("E:\\vcprojects\\opencv\\a.bmp", CV_LOAD_IMAGE_GRAYSCALE);    IplImage* imgB = cvLoadImage ("E:\\vcprojects\\opencv\\b.bmp", CV_LOAD_IMAGE_GRAYSCALE);    cvNamedWindow ("a", CV_WINDOW_AUTOSIZE);    cvNamedWindow ("b", CV_WINDOW_AUTOSIZE);    cvShowImage ("a", imgA);    cvShowImage ("b", imgB);    CvScalar scalarA = cvAvg(imgA);            CvScalar scalarB = cvAvg(imgB);        printf ("avg A:%f avg B:%f\n", scalarA.val[0], scalarB.val[0]);    cvWaitKey(0);    cvReleaseImage (&imgA);    cvReleaseImage (&imgB);    cvDestroyWindow ("a");    cvDestroyWindow ("b");}