#include <cv.h>
#include <highgui.h>
#include <iostream>
using namespace std;
int main() {
    IplImage *image = 0;
    if (!(image = cvLoadImage("image.jpg"))) exit(-1);
    cvNamedWindow("Example", CV_WINDOW_AUTOSIZE);
    cvShowImage("Example", image);
    cvWaitKey(3000);
    while (cvWaitKey(1) != 27) {
 	cvAddS(image, cvScalar(-1, -1, -1, 0), image);
	cvShowImage("Example", image);
    }
    cvDestroyWindow("Example");
    cvReleaseImage(&image);
    return 0;
}