Mat Image = imread("赤木晴子.jpg");
if (!Image.empty()){
cv::namedWindow("original_img",1);cv::imshow("original_img", Image);
cv::waitKey(1);}
/*rgb图像中的各个通道值*/
cv::Point point(0,0);
//cout << (int)Image.at<Vec3b>(point)[0] << " " << (int)Image.at<Vec3b>(point)[1] << " " <<(int)Image.at<Vec3b> (point)[ 2] << endl;
printf("%u ", Image.at<Vec3b>(point)[0]);
printf("%u ", Image.at<Vec3b>(point)[1]);
printf("%u \n", Image.at<Vec3b>(point)[2]);
/*图像中的颜色空间转化以及通道数的读取*/
cv::Mat dst;cv::cvtColor(Image,dst,CV_RGB2GRAY);
cv::imwrite("赤木晴子_gray.jpg",dst);cv::imshow("gray_img",dst);waitKey(1);
std::cout << "IMage:" << Image.channels() << " " << "dst:" << dst.channels() << endl;
cout << "图像的大小为:" << Image.rows << 'x' << Image.cols << endl;