Public bug reported:
Binary package hint: eog
Hi,
I did observe this bug various times, with various jpg files, with or
without other "heavy" applications running. I managed to reproduce the
bug with the following procedure, I have undergone under Ubuntu 8.10
with Amarok, gPodder, VLC, Gimp running at the same time. My version of
Eog is 2.24.1-0ubuntu1.
0. prepare a sample of 32 image files in a single folder with Gimp:
- 2 photos (1st label "a" or "b")
- 4 sizes (2nd label): 2000x1500 "a", 600x450 "b", 200x150 "c", 60x45 "d"
- 2 orientations (3rd label): portrait "e", landscape "f"
- 2 format files: jpg and png
1. open a jpg image with eog
2. rotate "CTRL+R" (4th label): once "x", 3 times "y"
3. save "CTRL+S"
4. forward
5. loop from 2., so that all images of the current folder are treated once
6. the result is 64 new image files
It appeared that:
0. obviously, skipping steps 2 and 3 does not make the bug appear
1. the png files are not affected
2. the 2 sets of jpg files (1st label photo "a" and photo "b") are affected the
same way
3. the bug keeps image size unchanged
4. the affected files have rows (resp. columns) of pixels moving from one end
of the image to the other end: from the top to the bottom (resp. from the left
hand side to the right hand side)
5. the order of these rows (resp. columns) is inversed (mirror effect)
6. rotating the image once moves the pixel columns: from the left hand side to
the right hand side, and rotating it 3 times moves the pixel rows: from the top
to the bottom
7. globally, the smaller the image size, the higher the number of rows (resp.
columns) moved
Not to infer too much, here is a list of the 26 affected files (others remained
unchanged), with corresponding number of rows (resp. columns) moved, and new
location ("b" for bottom and "r" for right hand side):
aaey.jpg and baey.jpg 12 b
abey.jpg and bbey.jpg 2 b
abfy.jpg and bbfy.jpg 8 b
acey.jpg and bcey.jpg 6 b
acfy.jpg and bcfy.jpg 8 b
adey.jpg and bdey.jpg 13 b
adfy.jpg and bdfy.jpg 12 b
aafx.jpg and bafx.jpg 4 r
abfx.jpg and bbfx.jpg 2 r
acex.jpg and bcex.jpg 8 r
acfx.jpg and bcfx.jpg 6 r
adex.jpg and bdex.jpg 12 r
adfx.jpg and bdfx.jpg 13 r
Attached are the 16 original and 32 bugged jpg image files.
Thanks in advance for the help,
François
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/eog
Package: eog 2.24.1-0ubuntu1
ProcEnviron:
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: eog
Uname: Linux 2.6.27-15-generic i686
** Affects: eog (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug
--
rotating a jpg photo (eg "CTRL+R"), then saving it (eg "CTRL+S"), moves a few
lines or columns of pixels from one end to the opposite
https://bugs.launchpad.net/bugs/486862
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