aestetix wrote: ↑19 Aug 2022, 06:51
Sometimes pages are randomly green.
The image histogram shows 20 to 25% more green than red or blue, not really noticeable on my laptop screen, but LCD screens generally do not render colours very accurately.
Converting to grayscale and then applying a small levels correction improves the image:
The benefit isn't very clear unless the colour and grayscale images can be viewed in adjacent tabs in a viewer, or in quick succession.
The grayish shadow on the left could be removed with a slightly larger levels correction, at the cost of a possible a slight degradation in the equality of the text. No easy fix for the black marks at the top, other than cropping the canvas or pasting an area of white canvas over them. A levels correction, at least, could be easily batched if the images are generally consistent in appearance.
Off topic, I did some work with TI 9900/9995 16-bit microprocessors long ago, register-to-register architecture, assembler code, the only microprocessor I ever programmed.