Dithering in Gamma vs. Linear Space

Here is some public domain image, originally created by Ricardo Cancho Niemietz. Conversion to R4G4B4A4, without application of dithering, yields a rather unsightly result. Note the significant color banding on the gradients, which results in the Mach band optical illusion. There is some heavy color banding of the parrot's plumage as well. Dithering improves the […]