   Coefficients for error diffusion [Dithering a la floyd steinberg]
  Hello,I recently implemented the well known floyd steinbergerror diffusion algorithm for dithering purpose.It works ok but the converted image contains a lot ofartifacts. I read those ''worms'' are inherent to thefloyd steinberg coefficients I used (found here at gamedev).What coefficients should I use ? Or maybe a different algorithm ?Thanks 
  boing ?! ;  Any linky to a screenshot ? Is it a RGB -> 256colors or RGB reduction algorithm ? 