Gary Bradski | 27 Jul 01:07 2011
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I have temporarily suspended accounts on the OpenCV Wiki

I just cleaned up a ton of spam and so have temporarily suspended new accounts on the OpenCV wiki until we can put in an account approval system.

I've also been deleting spam accounts (you go to settings, switch user.  Then change their password.  Then go to preferences. Change their email, add some "ddd" in front of their user name to indicate its' been deleted and mark the check box to disable the account forever).

Who is yvopub ?  I accidently changed that password. It's now OpenCV

Gary

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Nghia Ho | 17 Jul 02:23 2011
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Build problems with 2.3.0 on Windows

When trying to build on Windows using MSVC2005 and MSVC200 (either 32 or 64bit) I get this:

i>------ Skipped Build: Project: uninstall, Configuration: Release Win32
------
1>Project not selected to build for this solution configuration
2>------ Skipped Build: Project: INSTALL, Configuration: Release Win32
------
2>Project not selected to build for this solution configuration
3>------ Skipped Build: Project: PACKAGE, Configuration: Release Win32
------
3>Project not selected to build for this solution configuration
========== Build: 0 succeeded, 0 failed, 122 up-to-date, 3 skipped

On closer inspection all the lib/dll are built correctly. The problem is the INSTALL project looks for opencv_ffmpeg230d.dll (and possibly opencv_ffmpeg230d.lib), which are not suppose to exist? As a result, the build script does not finish and does not create the 'include' directory correctly, missing all the opencv/opencv2 headers. I got it working by downloading the Windows Superpack and manually copying the header files over.

There is another user on the OpenCV yahoo user group that reports this problem.

Nghia
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Nghia Ho | 12 Jul 03:01 2011
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Future of C version?

Hi all,

More of a curious question. What will eventually happen to the C version of OpenCV in future releases. Is it just going to be the back end for the C++ wrapper for low level stuff like matrices? Seems like all the new features are C++, with many of them having no equivalent C calls.

Nghia
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Jose Luis Blanco | 11 Jul 10:14 2011
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On Debian/Ubuntu packaging for OpenCV 2.2 / 2.3+

Hi all,

I came across this [1] personal Ubuntu repository by Gijs Molenaar who
packaged OpenCV 2.2 for Ubuntu. I see there that the big
restructuration into modules obviously put an end to the different
lib*-dev packages, and at least in this package all of them are
replaced by only one "libopencv-dev" (just like in pre 1.0 ancient
times).

And I wondered if anyone involved in the "oficial packaging" for
Debian and/or Ubuntu knows if this is also the convention to be
followed in the future... btw, my interest in this comes from the need
to know what to write in the "Build-depends:" line in other dependant
packages ;-)

Cheers,
Jose Luis

[1] https://launchpad.net/~gijzelaar/+archive/opencv2

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Vadim Pisarevsky | 4 Jul 19:27 2011
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OpenCV 2.3.0 final is out

Hello everybody,

OpenCV 2.3.0 has been just released.

Thanks a lot to everybody who participated, reported bugs, tested 2.3rc packages etc!

Here are the major changes since 2.3rc:

1. Documentation has been further improved. There is now again a single reference manual that describes C++, C and Python interfaces (with Java interface likely to come in 2.3.1).

2. Fixed a few build problems, including the case of Visual Studio 2005.

3. [Windows] opencv_ffmpeg.dll does not have to be built anymore for every compiler, every configuration etc. It is now available for all users.

4. [Windows] We prepared "superpack" package (OpenCV-2.3.0-win-superpack.exe) containing pre-built OpenCV libs for different compilers, following the poll at http://tech.groups.yahoo.com/group/OpenCV/surveys?id=3051965. To bring the size down, we did not include static ffmpeg libs or Visual Studio 2005 libs. Python 3.0 is also not supported yet. But there is higher chance that you will find binaries that suit you in the superpack.
   The superpack is not an installation package, it is self-extracting archive. An installer is probably to come in 2.3.1 or 2.4.

The OpenCV post-ice-age history of changes can be found here: http://opencv.willowgarage.com/wiki/OpenCV%20Change%20Logs

You are welcome to try it out and report any problems (by e-mail or via our bug tracker https://code.ros.org/trac/opencv).

You can take the packages at SourceForge:
   b) https://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.3/ (the source zip and the sfx superpack).
       GPU-accelerated binaries are to be added a few days later. VS2008 users can take opencv_gpu230 from 2.3rc package - it has not been changed since then.

Regards,
Vadim

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David Warshow | 30 Jun 19:39 2011

Building OpenCV 2.3 without CUDA on Ubuntu 10.10 Problems

Hi,


I am trying to build the new 2.3 release on Ubuntu 10.04 without CUDA and without samples/tests. I am using cli CMAKE to build the make files with this command

 "cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local .."

cmake suceeds but when I call make it fails at about 86% when attempting to build the gpu tests  with the error: 

[ 94%] Built target opencv_gpu
[ 94%] Building CXX object modules/gpu/CMakeFiles/opencv_test_gpu_pch_dephelp.dir/opencv_test_gpu_pch_dephelp.o
In file included from /home/diw08/code/libs/opencvBuild/opencv/release/modules/gpu/opencv_test_gpu_pch_dephelp.cxx:1:
/home/diw08/code/libs/opencvBuild/opencv/modules/gpu/test/test_precomp.hpp:53: fatal error: cuda_runtime_api.h: No such file or directory
compilation terminated.

I have checked the CMAKE.lists file and have even commented out every reference to gpu I can find but It still tries to build opencv_test_gpu_pch_debhelp.o ?

I building on a server with no graphics card how do I force it to build without gpu support?

Thanks, you guys are doing amazing work!

David Warshow
802-249-0882
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Adi Shavit | 23 Jun 21:06 2011
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[Bug?] Window Title of namedWindow is Corrupt in Debug Mode

Hi,

  I don't know if this is a known problem, but in debug mode, the window title of namedWindow is corrupted. In Release it is fine.
I tried it on the latest SVN (2.3) and also 2.2. Visual Studio 2010 (and 2008 too I think).

Adi
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David Warshow | 23 Jun 18:08 2011

Prosillica GigE PvAPI Problems

Hi!

I am working on a project using two Prosilica GigE cameras and am trying to use them with OpenCv built with the PVAPI. I can capture from them using purely the demo code in their api. But when I attempt to capture using opencv, the create capture fails. I am trying to follow Justin's examples. Can anyone offer any suggestions? I sent a message last week with more details but no one responded, I assume everyone was busy with the new release, but now that is done can anyone take a look please?

Thanks!

David Warshow
Hampshire College
diw08-6juwt9BsmR7V1CgomF1qdQ@public.gmane.org

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Vadim Pisarevsky | 21 Jun 17:27 2011
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OpenCV v2.3rc is out

Hello everybody,

OpenCV 2.3rc packages have been just out. The final release is expected by the end of this week or beginning of the next week.

Thanks a lot to everybody who helped with the release!

Main focus of the release was on improving stability and quality of the documentation, as well as making GPU acceleration and the Android port more mature.

You are welcome to try it out and report any problems (by e-mail or via our bug tracker https://code.ros.org/trac/opencv).

You can take the packages at SourceForge:
   b) https://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.3/ (installation packages for the source zip for Win32/Win64):
         * OpenCV-2.3.0rc-win32-vs2008.exe (32-bit OpenCV installation package for VS2008 users. TBB support and Python 2.7 support is included)
         * OpenCV-2.3.0rc-gpu-support-win32-vs2008.zip (complimentary archive for the previous package. Adds GPU acceleration to OpenCV. You will need CUDA 4.0 installed)
         * OpenCV-2.3.0rc-win64-vs2010.exe (64-bit OpenCV installation package for VS2010 users. TBB support and Python 2.7 support is included)
         * OpenCV-2.3.0rc-win-src.zip (a smaller source-only package. For those who use MinGW, need static libraries, use different Python version, or just going to rebuild OpenCV anyway).

Regards,
Vadim

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Gijs Molenaar | 20 Jun 14:25 2011
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OpenCV 2.3 coming?

Hi OpenCV people,


Is it going to happen?



What will happen to the 2.2 branch? Will there be a 2.2.1 release?

Thanks,

 - Gijs 
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Re: HighGUI Prosilica GigE Camera integration.


Hi Justin,

Firstly thanks for adding support in OpenCV for the PVAPI on linux. I have
got it working with an AVT Manta G032C but I can only acquire images in
greyscale successfully. If I try to use any of the colour capture modes in
the camera's configuration (available through the sample viewer etc.) with
OpenCV natively, I get a segfault in libc. Could you possibly shed any light
on what is going on.

I've got this set up on Ubuntu 10.04 and 11.04 with the same setup for
opencv. I wrote these instructions if you wish to see exactly what my setup
is like:
http://esimaging.co.uk/index.php/resources/case-studies/80-case-study-opencv-and-avt-pvapi-on-ubuntu-1004-and-1104
and
http://esimaging.co.uk/index.php/resources/case-studies/81-building-latest-opencv-with-svn-ffmpeg-on-ubuntu-1004-and-1104.

Also, you mention being able to make the needed changes to build this on
windows. Please could someone point me in the right direction to start doing
this? 

Thanks in advance, I hope there's still someone watching this thread... any
suggestions for either point would be greatly appreciated.

Ed
--
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