eog rotate&save moves small strip of pixels to other side of image
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Eye of GNOME |
Expired
|
Medium
|
|||
eog (Ubuntu) |
Triaged
|
Low
|
Unassigned |
Bug Description
I have been using Hugin to assemble panoramas, but until this one, they were all horizontal (all photos to be assembled right to left).
This one contained four images vertically oriented, so to line them up, I copied them and rotated them 90 degrees counterclockwise with eog and saved through eog, and then pointed Hugin at the rotated images (Possibly Hugin could make a vertical panorama without my doing this, but I didn't try...)
After the panorama image was complete, I copied it and rotated it into a vertical orientation again (90 degrees clockwise) and saved through eog.
Imagine my surprise, when I looked at the final image, and saw a strip of pixels on the right that didn't look right.
Upon closer inspection, I found that they seemed to match the pixels on the left edge.
When rotating, the image appears correct. It is only after saving, and re-invoking eog on the image that the problem is visible.
It is not a display problem, as the copied/moved pixel columns show up when the image is shown with ImageMagick, and GIMP.
With GIMP, by blowing up the display to 400%, and watching the pixel coordinates as I move my mouse from the left to the right over the false pixel columns, it appears that the number of pixel columns copied or moved is 7.
Upon further research, When I have GIMP blow up both images equally, it seems clear that the pixel columns are being cut off from the left side of the image, and attached to the right side.
(In the attached images, if you look at the "C" on the left (about 75% of the way down, at the edge), you will see that it lines up almost exactly with the edge of the image, yet in the horizontal image, there is a gap between the edge and the "C" (that appears also to be about 7 pixels wide))
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scott@scott-
Linux scott-Asus-
scott@scott-
Ubuntu 17.10
artful
scott@scott-
QLubuntu
scott@scott-
GNOME Image Viewer 3.26.1
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ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: eog 3.26.1-0ubuntu1
ProcVersionSign
Uname: Linux 4.13.0-32-generic x86_64
NonfreeKernelMo
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: LXQt
Date: Mon Jan 29 20:54:14 2018
InstallationDate: Installed on 2017-11-06 (85 days ago)
InstallationMedia: Lubuntu-Next 17.10 "Artful Aardvark" - Beta amd64 (20171014)
SourcePackage: eog
UpgradeStatus: No upgrade log present (probably fresh install)
Changed in eog: | |
importance: | Unknown → High |
status: | Unknown → Confirmed |
Changed in eog: | |
importance: | High → Medium |
Changed in eog: | |
status: | Confirmed → Invalid |
Changed in eog: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
Changed in eog: | |
status: | Confirmed → Expired |
Please describe the problem:
Rotate a jpg photo left and save it. The last line of the new picture will display incorrect pixels.
Steps to reproduce:
1. Rotate a (jpeg) file once left.
2. Save the picture.
Actual results:
The last line of the new image displays incorrect pixels.
Expected results:
Same output as rotating and saving the image with GIMP.
Does this happen every time?
Yes.
Other information:
- Seems not to occur after rotating right.
- Ok with other jpg files.