1
vote
0answers
28 views

Which HSV-noise values do not cause artifacts on an LCD screen?

I have come to notice that certain HSV noise filter values applied to a uniform background colour look horrible when viewed on an LCD screen under certain viewing angles. This is more noticeable on ...
3
votes
1answer
171 views

Removing a grid from an image

I'm doing some image processing to detect bubbles in oil. One of the filters I use creates a grid in my image. If you look closely at the image you can see horizontal and vertical lines through the ...
0
votes
3answers
174 views

How can I multiply pixel values by a constant in Gimp?

In Gimp, how can I multiply the value of every pixel in a grayscale image by a constant value? For example, multiply each pixel by 2.
0
votes
1answer
76 views

How to avoid pixel shifting for embossed tiling in Gimp

I'm trying to create tiles with a cloud embossing. I generated the tiling clouds with filter > render > clouds , and then applied filter > distort > emboss. But the modified clouds ...