..
Mat img = imread("ss.jpg"); vector< Mat> rgbMat(3); cv::split(img, rgbMat); namedWindow("img", 0); //make window imshow("img", rgbMat[2]); //show waitKey(0); imwrite("r.jpg", rgbMat[2]); imwrite("g.bmp", rgbMat[1]); imwrite("b.tif", rgbMat[0]);
...
video write
http://study.marearts.com/2013/09/opencv-video-writer-example-source-code.html
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