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and subject line Bug#290490: PNG image loaded with incorrect layer offset
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Date: Fri, 14 Jan 2005 23:09:04 +1100 (EST)
From: ian <[EMAIL PROTECTED]>
To: Submit bug report to Debian <[EMAIL PROTECTED]>
Subject: PNG image loaded with incorrect layer offset
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Package: gimp
Version: 2.2.2-1
I have a set of PNG images that I converted from camera-generated TIFF images
to
PNG using the ImageMagic 'convert' program. The 'display' program shows them
fine, as does gthumb. And I'm pretty sure the previous minor version (2.2.1-2)
of The Gimp showed them fine as well. Now when I load one up it looks
transparent. If I zoom out until the image is much smaller than the window, it
seems the single layer has been offset by one full height above the image.
e.g the image is 1712x2288, the layer starts at (0,-2288).
If I convert the PNG back to a TIFF then The Gimp can load it fine and save it
back to a PNG file that works later. But I don't want to have to do that with
every file.
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Date: Fri, 14 Jan 2005 12:51:49 -0500
From: Ari Pollak <[EMAIL PROTECTED]>
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To: ian <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
Subject: Re: Bug#290490: PNG image loaded with incorrect layer offset
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I'm pretty sure a very similar bug was reported a while back with the
interaction between imagemagick and gimp, but I can't seem to find any
reference to it now. Regardless, nothing changed between 2.2.1 and 2.2.2
in the PNG plugin that I know of.
ian wrote:
> Sorry, I filed the bug too early.
>
> It seems to be a bug/misbehaviour in ImageMagick. An inspection of the
> PNG file shows an 'oFFs' chunk with the (0,-2288) coordinates. I had
> taken the photographs rotated in a "portrait" orientation and had used
> the -rotate 270 option (or was it -90?) to 'convert' to properly
> re-orientate the images. I'm still not sure if I had viewed the images
> with the previous version of The Gimp, perhaps I hadn't.
>
> Had support for the 'oFFs' chunk been recently added to the png plugin?
> Either way, it appears to be doing what it's supposed to be doing. You
> can close this bug now, sorry for wasting your time.
>
> bye
>
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