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Bug 731931 - Image noise is disturbingly visible in Gnome Viewer
Image noise is disturbingly visible in Gnome Viewer
Status: RESOLVED DUPLICATE of bug 665897
Product: eog
Classification: Core
Component: image viewer
3.12.x
Other Linux
: Normal major
: ---
Assigned To: EOG Maintainers
EOG Maintainers
Depends on:
Blocks:
 
 
Reported: 2014-06-19 18:21 UTC by Pekka Helenius
Modified: 2014-06-21 12:15 UTC
See Also:
GNOME target: ---
GNOME version: ---



Description Pekka Helenius 2014-06-19 18:21:15 UTC
I have used Eye of Gnome image viewer for a while. The program is good altogether. However, the viewer makes image noise disturbingly visible. As far as I can tell, this effect is only Eye of Gnome-related issue because images are shown correctly with other viewers.

Image noise is so visible that enjoying the watching of many images is just pain to eyes.

I provide an example, the first image sample is the view of eog. The second one is the same image opened with Photoshop CS2 (running under wine prefix). You can clearly see the difference between two.

Eye of Gnome:
http://s28.postimg.org/fm68f434b/noise1.png

Adobe Photoshop CS2:
http://s9.postimg.org/p3rlsdpcv/noise2.png

Tested with eog 3.8.2 and 3.12.2.

Any way to fix this?
Comment 1 Felix Riemann 2014-06-21 12:15:50 UTC
That's probably the same as bug 665897. The noise you see comes from a lack of filtering after downscaling the image and your image is rather 	susceptible for this effect due to the night sky and the grass (as are images with a lot of grain). eog uses cairo for drawing (and thus also scaling). Although eog asks cairo to apply bilinear filtering in those cases it obviously still doesn't. :(
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Thanks for the bug report. This particular bug has already been reported into our bug tracking system, but please feel free to report any further bugs you find.

*** This bug has been marked as a duplicate of bug 665897 ***