https://bugzilla.suse.com/show_bug.cgi?id=1206322 https://bugzilla.suse.com/show_bug.cgi?id=1206322#c20 --- Comment #20 from Petr Gajdos <pgajdos@suse.com> --- (In reply to Dominique Leuenberger from comment #3)

(In reply to Petr Gajdos from comment #2)

...

Let's try to remove GraphicsMagick again: bug 1206322

That's ambitious:

Yes, it was ambitious, even if I think only five packages really BuildRequires it: inkscape, scribus, octave, wt and pdf2djvu and requirements are optional in all of them. I think it is doable, but I am not sure how much time would this require in case we want to keep all the functionality [bug 1206322 comment 20]. (In reply to Dirk Weber from comment #19)

$ gm compare -metric PAE ./85-1_tw.png montage1.png Image Difference (PeakAbsoluteError): Normalized Absolute ============ ========== Red: 0.2149691005 14088.0 Green: 0.1889066911 12380.0 Blue: 0.1703669795 11165.0 Total: 0.2149691005 14088.0 $ gm compare -metric PAE ./86-1_tw.png montage2.png Image Difference (PeakAbsoluteError): Normalized Absolute ============ ========== Red: 0.1409323262 9236.0 Green: 0.1148699168 7528.0 Blue: 0.0963302052 6313.0 Total: 0.1409323262 9236.0

ImageMagick-7.1.0.55-1.1.i586 GraphicsMagick-1.3.38-1.6.i586

I am afraid I can not judge these results. I do not know whether these are precise operations which always have to give the same results or whether they are fuzzy operations and the result can e.g. depend on the used floating point unit, like x87 or SSE2, and it is normal to have a deviation when an image "montaged" on one type of fp-unit is compared to one "montaged" on another type of fp-unit even when both are actually valid results.

Thank you Dirk for your evaluation. I really do not think testing ImageMagick with GraphicsMagick and vice versa is a good idea; the problem, if any at all (reading previous comments), can be in either of them and I am almost convinced who will have to tackle these potential issues down. But ok, I understand you guys want me to have a nice hackweek, right ;)? -- You are receiving this mail because: You are on the CC list for the bug.