As you know there is no opencv official tutorial for video module. That tutorial section is empty. I googled but couldn't find anything good. Any of you know a good OpenCV video module tutorial in c++?
Actually, I need to capture humans, then identify the colour of their T-Shirts
you just want to capture video stream or apply some algo on it or what?
check this
Here is a small example on opencv docs to capture from cam.
http://docs.opencv.org/modules/highgui/doc/reading_and_writing_images_and_video.html
这些来自opencv.org的书籍可能对您有用http://opencv.org/books.html
You can do this by using haarcascade xml already provided in opencv.
Then you can check the color of t-shirt by applying simple opencv filters to extract color.
Haarcascade xmls are available of full human body, upper half, lower half etc.
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