[Pkg-scicomp-devel] Bug#594543: libhighgui2.1: Video capture from FireWire camera garbled (looks like stereo fields)
Raphael Wimmer
raphael.wimmer at ifi.lmu.de
Thu Aug 26 23:17:44 UTC 2010
Package: libhighgui2.1
Version: 2.1.0-2
Severity: normal
*** Please type your report below this line ***
Capturing a video frame from a Point Grey FireFly MV (b&w) results in a
garbled image (example attached).
This has been reproduced on three different computers using both a simple
C program and a Python script.
When using Coriander, the image looks absolutely correct, however.
Interestingly, once I enable the "St. Field" decoding option in Coriander,
the image looks like the garbled one captured by OpenCV.
That would suggest that OpenCV tries to decode the image into stereo
fields.
However, I did not find any hints in the cap_dc1394_v2.cpp on why this
"stereo-decoding" might happen.
This seems to be a regression from 2.0 (in Testing). Using the same C and
Python programs gets me a good image with OpenCV 2.0.
It does not seem to be a problem with libdc1394 as I used the same library
version when comparing OpenCV 2.0 and 2.1.
Any hints?
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages libhighgui2.1 depends on:
ii libatk1.0-0 1.30.0-1 The ATK accessibility toolkit
ii libatlas3gf-base [libla 3.6.0-24 Automatically Tuned Linear
Algebra
ii libavcodec52 4:0.5.2-1 ffmpeg codec library
ii libavformat52 4:0.5.2-1 ffmpeg file format library
ii libavutil49 4:0.5.2-1 ffmpeg utility library
ii libbz2-1.0 1.0.5-4 high-quality block-sorting
file co
ii libc6 2.11.2-2 Embedded GNU C Library:
Shared lib
ii libcairo2 1.8.10-4 The Cairo 2D vector graphics
libra
ii libcv2.1 2.1.0-2 computer vision library
ii libdc1394-22 2.1.2-3 high level programming
interface f
ii libfontconfig1 2.8.0-2.1 generic font configuration
library
ii libfreetype6 2.4.2-1 FreeType 2 font engine,
shared lib
ii libgcc1 1:4.4.4-8 GCC support library
ii libglib2.0-0 2.24.1-1 The GLib library of C routines
ii libgtk2.0-0 2.20.1-1 The GTK+ graphical user
interface
ii libjasper1 1.900.1-7 The JasPer JPEG-2000 runtime
libra
ii libjpeg62 6b1-1 The Independent JPEG Group's
JPEG
ii liblapack3gf [liblapack 3.2.1-8 library of linear algebra
routines
ii libpango1.0-0 1.28.1-1 Layout and rendering of
internatio
ii libpng12-0 1.2.44-1 PNG library - runtime
ii libstdc++6 4.4.4-8 The GNU Standard C++ Library
v3
ii libswscale0 4:0.5.2-1 ffmpeg video scaling library
ii libtiff4 3.9.4-2 Tag Image File Format (TIFF)
libra
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
libhighgui2.1 recommends no packages.
libhighgui2.1 suggests no packages.
--
...
-------------- next part --------------
A non-text attachment was scrubbed...
Name: opencv2.1-stereo-bug.png
Type: image/png
Size: 574528 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/pkg-scicomp-devel/attachments/20100827/05335c75/attachment-0001.png>
More information about the Pkg-scicomp-devel
mailing list