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how to plot total red intensity of certain area of frames over time

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Hazmi Mazlaini
Hazmi Mazlaini 2017-1-17
i have a video, shot at 60fps for 10 seconds. i would like to plot a graph of total red intensity of certain area of the frames over time, to see the changes of the redness of that area. is there any sample code for it? thank you

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