No we don't use 128 pixels, I wrote 50 into it. But then again, we do the overlapping with a ramp function to avoid the seam. You didn't write it in your posts there, so I don't know if Attila is aware of it? (I will write a comment there.)
I never noticed any seams in my tests, certainly nothing that would be noticable for an artistic output.
In any case I'm not sure it can be done quite so easily, since usually we don't denoise images that are multiples of 128 pixels in each dimension. You can probably have each tile start at a multiple of 128 from one side. It would add some more processing time.
In the very early tests I did I also noticed that the first row or column (it was then striped denoising) always ended up exactly the same as the full image denoise. But I never investiagted further if that could be used becaues it seemed like the difference was so tiny.
Thanks for the notice!
