Legacy ImageMagick Discussions Archive

What I don't understand, is why -ordered-dither can't be a setting like -dither. Is it just that IM doesn't work that way or are there no viable way of implementing an ordered dither "function" that can use palettes of your choosing? I just want something like -dither Riemersma, but instead of being ...

Perhaps you can describe exactly what you want, or something. I do not know what I want now, after realizing it's been math all along and not some black magic that turns colors into a fun looking dots pattern. I just thought -dither and -ordered-dither are similar at the core and are only different ...

That is a huge bummer. But I guess it's just me being ignorant of how it works internally.

If there is even a slightest chance of "an ordered dither with a pre-built palette of colours" being realized, do you have any suggestions of how it might be done?

That does the trick! Thank you!
Please tell me dithering is still something that's being worked on, though. I understand it's very niche but it was what brought me to IM and I've since found IM to be extremely useful!

No unfortunately. The "-alpha on" at the end doesn't seem to do anything, but thanks for trying!

That's great to hear! I was hoping for a work around for the time being, however.

I'm aware that I can use "+dither -colors x" and get an image with x colors that is as close to the original image's colors as possible. But I can't, for example, use "-ordered-dither o8x8 -colors x" and achieve the same effects. It appears to me that "-ordered-dither" use 'posterized' color maps ...