Search found 5 matches

by eefi
2014-01-16T02:08:31-07:00
Forum: Bugs
Topic: Color profile handling regression from 6.8.6-10 to 6.8.7-10
Replies: 3
Views: 4948

Re: Color profile handling regression from 6.8.6-10 to 6.8.7

Ah, thanks for the clarification, fmw42. It looks like I had a fundamental misunderstanding of what the -colorspace option does. In fact, the thing I wanted to do was use -profile with a downloaded copy of an sRGB ICC profile. For future readers, what I did was download the "PC version" of the sRGB ...
by eefi
2014-01-15T23:55:44-07:00
Forum: Bugs
Topic: possible bug JPG,PNG type=truecolor grayscale IM 6.8.8.2 Q16
Replies: 5
Views: 9462

Re: possible bug JPG,PNG type=truecolor grayscale IM 6.8.8.2

I believe I've tracked this down to a change between 6.7.6-10 and 6.7.7-10. Running convert rose: -colorspace gray -type truecolor rose_gray.jpg with 6.7.6-10 results in a file that opens in RGB mode in GIMP 2.8.6, but 6.7.7-10 outputs a file that opens in Grayscale mode. I built my binaries in ...
by eefi
2014-01-15T22:49:07-07:00
Forum: Bugs
Topic: Color profile handling regression from 6.8.6-10 to 6.8.7-10
Replies: 3
Views: 4948

Color profile handling regression from 6.8.6-10 to 6.8.7-10

I've found what seems to be a regression in handling of embedded color profiles in JPEGs between 6.8.6-10 and 6.8.7-10. I took the test Landscape_2.jpg image from https://github.com/recurser/exif-orientation-examples and attempted to normalize it to sRGB colorspace by running convert Landscape_2.jpg ...
by eefi
2014-01-15T20:46:33-07:00
Forum: Users
Topic: sampling-factor always similar
Replies: 20
Views: 17907

Re: sampling-factor always similar

Ah, I see now that GreenKoopa's test is not quite correct. However, my original point still stands. When I run convert 3.jpg -type TrueColor 3-out.jpg and open 3-out.jpg in GIMP, GIMP tells me the image mode is Grayscale. However, when I follow snibgo's workaround: But if the image might contain a ...
by eefi
2014-01-15T16:46:43-07:00
Forum: Users
Topic: sampling-factor always similar
Replies: 20
Views: 17907

Re: sampling-factor always similar

For sure here it is: http://wideortest.s3.amazonaws.com/640x480_5_multipleformat/3.jpg convert gray.jpg -type TrueColor gray_to_rgb.jpg convert gray_to_rgb.jpg -format "%r %[channels] %[colorspace]" info:- PseudoClass Gray gray Gray <= Case 5: fail (the case lahabana needed) Its a bug and its ...