[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 Ryan Kaldari rkald...@wikimedia.org changed: What|Removed |Added Status|REOPENED|RESOLVED

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 --- Comment #7 from Tim Starling tstarl...@wikimedia.org 2010-08-20 08:06:05 UTC --- The issue is an arbitrary change in SharpenImageChannel() made some time between ImageMagick 6.4.9 and 6.5.1. The relevant code changed from this:

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 --- Comment #8 from Ryan Kaldari rkald...@wikimedia.org 2010-08-21 00:47:34 UTC --- Nice sleuthing! -- Configure bugmail: https://bugzilla.wikimedia.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 Derk-Jan Hartman hart...@videolan.org changed: What|Removed |Added CC|

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 --- Comment #2 from Ryan Kaldari rkald...@wikimedia.org 2010-08-19 17:57:33 UTC --- The correct current syntax is using the -unsharp option after the -thumbnail option. I think previously we were using a radius of 0.8 or something like that,

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 --- Comment #3 from Ryan Kaldari rkald...@wikimedia.org 2010-08-19 18:25:05 UTC --- Ah, looks like the old syntax was -sharpen (which is a much more logical name). Apparently they're using an unsharp masking algorithm to do the sharpening now,

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 Ryan Kaldari rkald...@wikimedia.org changed: What|Removed |Added Status|NEW |RESOLVED

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 Ryan Kaldari rkald...@wikimedia.org changed: What|Removed |Added Status|RESOLVED|REOPENED

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 Ryan Kaldari rkald...@wikimedia.org changed: What|Removed |Added AssignedTo|rkald...@wikimedia.org

[Bug 24857] New thumbnails are not sharp

https://bugzilla.wikimedia.org/show_bug.cgi?id=24857 --- Comment #6 from Ryan Kaldari rkald...@wikimedia.org 2010-08-19 19:08:28 UTC --- Maybe someone with command line access to our ImageMagick could do some tests and find out what's going on with it, i.e. test using 'convert -thumbnail' with