How to detect image flickering in frame

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Hi All,

I am new to OpenCV and Image processing started reading lots of document, and working on problem where I have to process multiple images and needs to detect if any flickering happen. I think relative comparison will not work because we will not have good image all the time.

Hence am looking some way to find thru Pixels intensity analysis or ??

Any suggestion will be appreciated. Note: Am using C++ and OpenCV

Regards, AK