Canny operator

//Canny operator
//
int _tmain(int argc, _TCHAR* argv[]) {
	IplImage *img = cvLoadImage("E:\\ProgramData\\data\\LenaGr.jpg", 0);//0 means get the gray img
	IplImage *edgesCanny = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 1);

	cvCanny(img, edgesCanny, 100, 150, 3);

	cvNamedWindow("Test", CV_WINDOW_AUTOSIZE);
	cvShowImage("Test", edgesCanny);

	cvWaitKey(0);

	cvReleaseImage(&edgesCanny);
	cvReleaseImage(&img);
	cvDestroyWindow("Test");

	return 0;
}