I have few hundred images in a dataset. I corrected illumination but they do have different illumination as they are taken in different lighting conditions.
Simple scaling is solving the problem, but I got confused what to choose. 1) Simply scaling all three different color channels by a constant c 2) Extract y channel in YCbCr converted Image and scale y channel by constant c.
In principle how they are different. I see minor difference in red channel histograms after scalling both the ways.
the condition of scaling is they must not affect the hue of any two subsequent images in the dataset.
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