exif orientation bug

Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
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needkane
Posts: 47
Joined: 2014-09-11T02:19:30-07:00
Authentication code: 6789

exif orientation bug

Post by needkane »

http://marry.qiniudn.com/o_198pf52es1rg ... p5ha6v.jpg //this picture has exif information.
http://needkane.qiniudn.com/error6/jpg //this picture is the result that the first picture remove exif information.
Two pictures look the same.Now I want change the picture size.
Use command :
convert [picture name] -auto-orient -thumbnail 400x /tmp/imgmogr2-226590685.jpeg.
I found two results is different.

Jason S
Posts: 103
Joined: 2010-12-14T19:42:12-07:00
Authentication code: 8675308

Re: exif orientation bug

Post by Jason S »

I think the correct link is http://needkane.qiniudn.com/error6.jpg.

It looks like a bug to me (tested with v6.9.0-2). The Exif thumbnail image has an Orientation tag, and I'm guessing that the -auto-orient routine wrongly thinks that tag applies to the main image.

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