1. Our stippling method works for both FS error diffusion and Ostromoukhov method by adjusting errors for each stipple based on the sizes of stipples. We can say it is a general transition from error diffusion to stippling.
2. Conversion issues(svg to png)
3. Here are tables for comparisons among current stipplings I can get.
It surprises me Kang's method got the highest scores.
CPSNR
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