pCannyImg = cvCreateImage(cvGetSize(pGrayImg),IPL_DEPTH_8U,1); //cvCanny(pGrayImg, pCannyImg, 150,50, 3); //创建窗口 cvNamedWindow( "Source Image", CV_WINDOW_AUTOSIZE); cvNamedWindow( "Gray Image",CV_WINDOW_AUTOSIZE); cvNamedWindow( "Canny Image",CV_WINDOW_AUTOSIZE); //添加滑动条来调节边缘检测的阈值 cvShowImage( "Gray Image", pCannyImg); cvCreateTrackbar("Threshold", "Canny Image", &Thresh, 100, onTrackerSlid); onTrackerSlid(Thresh); //显示图像 cvShowImage( "Source Image", pSrcImg ); cvShowImage( "Gray Image",pGrayImg); //保存图像 cvSaveImage( "Gray_Image.jpg",pGrayImg); cvSaveImage( "Canny_Image.jpg",pCannyImg); //等待按"ESC"键退出 while(1) if(cvWaitKey(100)==27) break; //销毁窗口 //cvWaitKey(0); cvDestroyWindow( "Source Image" ); cvDestroyWindow( "Canny Image" ); cvDestroyWindow( "Gray Image"); //释放图像 cvReleaseImage( &pGrayImg ); cvReleaseImage( &pCannyImg ); cvReleaseImage( &pSrcImg); return 0; } 

return -1; }