问Opencv显示Y来自YUV

EN

Mat src, src_resized, src_gray;

src = imread("11.jpg", 1);

resize(src, src_resized, cvSize(400, 320));

cvtColor(src_resized, src_resized, cv::COLOR_BGR2RGB);

/*
I've tried both with and without the upper conversion 
(mentioned here as bug 
http://stackoverflow.com/questions/7954416/converting-yuv-into-bgr-or-rgb-in-opencv 
 in an opencv 2.4.* version - mine is 2.4.10 )
*/

cvtColor(src_resized, src_gray, CV_RGB2YUV); //YCrCb

vector<Mat> yuv_planes(3);
split(src_gray,yuv_planes);

Mat g, fin_img;

g = Mat::zeros(Size(src_gray.cols, src_gray.rows),0);

 // same result withg = Mat::zeros(Size(src_gray.cols, src_gray.rows), CV_8UC1);

vector<Mat> channels;

channels.push_back(yuv_planes[0]);
channels.push_back(g);
channels.push_back(g);

merge(channels, fin_img);

imshow("Y ", fin_img);

waitKey(0);

return 0;

channels.push_back(yuv_planes[0]);