Legacy ImageMagick Discussions Archive

IM 6.7.9.10 Q16 Mac OSX Snow Leopard.

I think this is a color management bug with -solarize.


convert -size 50x100 gradient:"gray(255)-gray(0)" -depth 8 grad0.png

Image: grad0.png
Geometry: 50x100+0+0
Page geometry: 50x100+0+0
Class: PseudoClass
Colorspace: Gray
Type: Grayscale
Depth: 8-bit
Alpha: False
Channels: gray





convert grad0.png -solarize 50% -level 0,50% grad2.png

Image: grad2.png
Geometry: 50x100+0+0
Page geometry: 50x100+0+0
Class: PseudoClass
Colorspace: RGB
Type: Palette
Depth: 8-bit
Alpha: False
Channels: rgb

Result is converted from grayscale to rgb.




I can work around it by:

convert grad0.png -set colorspace RGB -colorspace gray -solarize 50% -level 0,50% grad2.png

But I would think that this should not have to be done.

We can reproduce the problem you posted and have a patch in ImageMagick 6.8.0-0 Beta available by sometime tomorrow. Thanks.