Pixel by Pixel

[AndyJWest]

Originally Posted by MadBlaster

The average on the 1 inch square could be based on a random sample of pixels in the square. No need to check every pixel or load up the average calculation with every pixel in the square. But I'm not a programmer. Just trying to apply some common sense to this insanity.

Actually, given the parallel processing capabilities of GPUs, I suspect that dealing with this on a per-pixel basis might be quicker. In any case, if you start averaging discreet sections of the screen, you risk causing all sorts of artefacts. Frankly though, I know enough about the problem to know that I don't know enough about the problem to solve it.