There is a change in IM between IM 6.8.5.10 and 6.8.6.0 where the output from -colorspace RGB is producing gamma=0.4545 rather than gamma=1.
This is a followup from viewtopic.php?f=3&t=23707
im68510 convert rose: -colorspace RGB -write show: -format "%[gamma]" info:
1
im6860 convert rose: -colorspace RGB -write show: -format "%[gamma]" info:
0.454545
IM 6863
convert rose: -colorspace RGB -write show: -format "%[info:]"
0.454545
IM 6864 beta
imb convert rose: -colorspace RGB -write show: -format "%[gamma]" info:
0.454545
Oddly all these images view darker as if gamma=1. However, all but the first are labeled with gamma=0.4545
[FIXED] possible bug output -colorspace RGB is gamma=0.4545
- fmw42
- Posts: 25562
- Joined: 2007-07-02T17:14:51-07:00
- Authentication code: 1152
- Location: Sunnyvale, California, USA
[FIXED] possible bug output -colorspace RGB is gamma=0.4545
Last edited by fmw42 on 2013-07-10T09:55:29-07:00, edited 1 time in total.
Re: possible bug output from -colorspace RGB is gamma=0.4545
We can reproduce the problem you posted and have a patch in ImageMagick 6.8.6-4 Beta available by sometime tomorrow. Thanks.
- fmw42
- Posts: 25562
- Joined: 2007-07-02T17:14:51-07:00
- Authentication code: 1152
- Location: Sunnyvale, California, USA
Re: possible bug output from -colorspace RGB is gamma=0.4545
This is fixed in IM 6.8.6.4. Thanks.