[Bug 188599] New: PGM images are decoded incorrectly
baeuml at gmail.com
baeuml at gmail.com
Wed Apr 1 13:57:19 BST 2009
https://bugs.kde.org/show_bug.cgi?id=188599
Summary: PGM images are decoded incorrectly
Product: kview
Version: unspecified
Platform: SuSE RPMs
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
AssignedTo: unassigned-bugs at kde.org
ReportedBy: baeuml at gmail.com
Version: 3.5.9 (using KDE 3.5.9)
OS: Linux
Installed from: SuSE RPMs
A PGM image with 16bit depth is not displayed/decoded correctly.
The images header is
P5
156 440
65535
<lots of data follows>
Steps to reproduce:
1. use `convert` to to convert a color image to gray scale pgm:
$ convert test.png -colorspace Gray test.pgm
2. confirm that it has 16bit depth: open test.pgm in an editor, the 3rd line
should contain 65535
3. open test.pgm with kview
Expected result:
the original image in gray scale
Actual result:
somewhat distorted version of the image
If one converts the original image to an *8bit* gray scale pgm, e.g. with
$ convert test.png -colorspace Gray -depth 8 test.pgm
kview can display the resulting pgm image correctly.
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