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1. Re: gausian blur color artifacts
Monstrik Feb 20, 2014 1:00 PM (in response to Monstrik)In addition, it doesnt matter what blur i use, i always get these artifatcs... Is that the way it's supposed to be?
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2. Re: gausian blur color artifacts
Chris Cox Feb 20, 2014 5:08 PM (in response to Monstrik)You're blurring the image so much that you're seeing the edges between values. This can be exaggerated by your document profile, display profile, and some (especially cheaper and laptop) displays.
In 16 bit/channel images, you can some see quantization because the display is only 8 bit, even though the data in the image doesn't actually have any visible steps.
It isn't an artifact - just a consequence of creating really smooth color gradations, and your eye is good at finding edges.
This is called "banding" or "quantization", and can be minimized by adding a small amount of noise back to the image.



