DITHERING ALGORITHM
Burkes Dithering Online
Most of the quality, less of the work.
Daniel Burkes simplified Stucki by dropping its second row entirely, keeping seven neighbours spread across the current row and the one directly below.
Halving the vertical reach makes it noticeably quicker while giving up surprisingly little quality. The texture is slightly grainier than Stucki but avoids the softness of the wider kernels.
If you are dithering large images and want error diffusion without the cost of a two-row kernel, this is the practical pick.
Large images, and a balanced result when speed matters.
Other dithering algorithms
Try it with a palette
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