Legacy ImageMagick Discussions Archive

I thought colorspace XYZ was supposed to be linear. If that is correct, then I think there is a bug, since it has gamma=0.4545


imbh convert rose: -colorspace XYZ -verbose info:
Image: rose:
Format: PPM (Portable pixmap format (color))
Mime type: image/x-portable-pixmap
Class: DirectClass
Geometry: 70x46+0+0
Units: Undefined
Type: TrueColor
Endianess: Undefined
Colorspace: XYZ
Depth: 8/1-bit
Channel depth:
red: 16-bit
green: 16-bit
blue: 16-bit
...
Rendering intent: Perceptual
Gamma: 0.454545

We can reproduce the problem you posted and have a patch in ImageMagick 6.8.7-1 Beta available by sometime tomorrow. Thanks.

This appears to be fixed now in the released version 6.8.7.1. It shows gamma=1.