OpenCV Filters

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So, I am at the end of my journey for the implementation of my stereo vision in real time. My disparity fluctuation values was solved through cv2.bilateralfilter. I am on the part for post-processing. Base from my research, i know there are some limitation in using stereo vision or producing depth map, particularly in uneven illuminations. I would like to ask is there any filter suggestion you would know that is somehow the same as a polarizer filter or a filter that normalize/rejects uneven light intensities??