On Sunday, December 26, 2021 08:06:14 AM Mayuresh wrote: > Printing a map between raw and transformed pixel values shows that for a > given raw pixel value there are multiple transformed values i.e. the > transformation is not a function of pixel's value alone. It seems some > sort of filtering where the neighboring pixels also influence the > resultant value.
That is not surprising -- there are a variety of image processing algorithms that work on a basis something like that, e.g., algorithms to improve focus / sharpness. I don't have any idea how you might sort of "back caculate" to figure out which algorithm or combination of algorithms might have been applied, but I suppose there might be a way to do that.
