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I am new to openCV. I am currently developing an application to do something about video processing with openCV. I need a trigger to enable my other work when two frame have huge difference. I know there is a function named cvAbsDiff but it only creates a diff image. But I need is a condition like |frame_{i}-frame_{i-1}| > TH. How can I do this with openCV? Thank you very much!
If you get the diff image of two different frames, you can then compute the sum of pixels values and apply your threshold.