Legacy ImageMagick Discussions Archive

I read through this
https://github.com/ImageMagick/ImageMagick/commit/8d3d6e584829223ac5f6e6653c3caa38a2562a74
and noticed
+#if 0 /* To do: Option to use the original colormap */
+ if (ping_preserve_colormap != MagickFalse)
+ {
+ }
+#endif
Seems like this has never been implemented :D
Thanks for ...

It really doesnt seem to care wich argument is passed to define. Just tested this:

magick in.png -define png:perserve-colormap=WHATEVER PNG8:out.png

No error message,no change in behaviour, no nothing.. O.o it seems Magick just doesnt pass these arguments or use them.

@fmw42: i think remap had the problem that it reorders the colors in the palette following some algorithm, so the colors dont have the same idexes as before. That makes the changed palette useless as well.

All of these commands have the exact same result, as if define would do nothing:
magick in ...

Version: ImageMagick 7.0.4-5 Q16 x64 2017-01-21 on Windows10
.png -> .png
magick convert in.png -gravity center -background none -extent 40x40 out.png
wich resizes all "in.png"s into a uniform size of 40 by 40 pixels with the original content centered in the middle. Background none is used to make ...

Hi,
I'm having troubles using ImageMagick for editing Image files with an indexed palette.

The problem is the reduction and reordering of the indexed palette ImageMagick automaticaly performs.
I havent found an option to disable this feature - I would need EXACTLY the same palette after a "convert ...