What happened to the adaptive palette?

[XnTriq]

The filter is ImageVice, downloadable here: http://www.boxtopsoft.com/download.html It gets excellent results.

Thanks for the hint! I remember playing with BoxTop's ProJPEG years ago, but missed out on ImageVice.

• FYI: The settings for ImageVice are saved in IVPrefs.DAT which is created in the current working directory. Usually, that's the folder where the EXE of the host application resides.

[xnview]

I've checked the code, and previous 'adaptive' is now 'adaptive + floyd'

[XnTriq]

I've checked the code, and previous 'adaptive' is now 'adaptive + floyd'

Thanks for checking, Pierre (-:

[eL_PuSHeR]

Nice. Merci beaucoup Pierre.

[Aolei]

Thanks - but I don't see that option in the gui.

In the reduction to binary there is a "Binary (Floyd Steinberg)", and in the Image - "Convert to colours..." "Dithering - Floyd Steindberg" (which also seems to be spelt incorrectly).
These don't help in reducing file sizes because random dithering makes for very incompressible graphics.
Perhaps the Map - Posterize... is the option to try.

[XnTriq]

Some programs have separate options for color palette and dithering method. I think that's the way to go.

Something like posterize? In xnview it's in image->map. It's a per-channel color reduction, but it's very coarse and unconfigurable. No dithering at all, no adaptive palettes. 18-bit is 6-bits per channel, which is labeled 64 in xnview.