[Digikam-users] Setup of OpenCV 2.4.9

[Gilles Caulier]

2014-07-06 18:42 GMT+02:00 eric <e.longuemare at laposte.net>:
> Hello,
>
> I've check and modify an old script to build and install OpenCV-2.4.9:
>
> http://askubuntu.com/questions/346264/does-the-version-of-opencv-shipped-with-12-04-support-v4l2
>
> The modify script for openCV 2.4.9 on ubuntu 12.04 :
>
> 1 - create an empty folder in you home directory
> 2 - create the script in the empty folder and make it executable
> 3 - launch it with ./nameofscript.sh
>
>
> #####Begin of script
> arch=$(uname -m)
> if [ "$arch" == "i686" -o "$arch" == "i386" -o "$arch" == "i486" -o
> "$arch" == "i586" ]; then
> flag=1
> else
> flag=0
> fi
> echo "Installing OpenCV 2.4.9"
> mkdir OpenCV
> cd OpenCV
> echo "Removing any pre-installed ffmpeg and x264"
> sudo apt-get -y remove ffmpeg x264 libx264-dev
> echo "Installing Dependenices"
> sudo apt-get -y install libopencv-dev
> sudo apt-get -y install build-essential checkinstall cmake pkg-config
> yasm
> sudo apt-get -y install libtiff4-dev libjpeg-dev libjasper-dev
> sudo apt-get -y install libavcodec-dev libavformat-dev libswscale-dev
> libdc1394-22-dev libxine-dev libgstreamer0.10-dev
> libgstreamer-plugins-base0.10-dev libv4l-dev
> sudo apt-get -y install python-dev python-numpy
> sudo apt-get -y install libtbb-dev
> sudo apt-get -y install libqt4-dev libgtk2.0-dev
> sudo apt-get -y install libfaac-dev libmp3lame-dev libopencore-amrnb-dev
> libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev
> sudo apt-get -y install x264 v4l-utils ffmpeg
> echo "Downloading OpenCV 2.4.9"
> wget -O OpenCV-2.4.9.zip
> http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.9/opencv-2.4.9.zip/download
> echo "Installing OpenCV 2.4.9"
> unzip OpenCV-2.4.9.zip
> cd opencv-2.4.9
> mkdir build
> cd build
> ######
> #uncomment next lines to let it do itself, for intel pentium M (no SSE3
> #- you have to edit
> #home/your_user/YourFolderforOpenCV/OpenCV/opencv-2.4.9/CMakeLists.txt
> #and put line 215 for SSE3 to OFF) # END OF COMMENT
> #######
> #cmake -D CMAKE_BUILD_TYPE=DEBUG -D CMAKE_INSTALL_PREFIX=/usr/local -D
> WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D
> INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON
> -D WITH_QT=ON -D WITH_OPENGL=ON ..
> #make -j4
> #sudo make install
> #sudo sh -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
> #sudo ldconfig
> #echo "OpenCV 2.4.9 ready to be used"
> #end of script
> ######
>
> I have check it with TAR and repository digikam 4.1.0 : no trouble.

When you said, no trouble do you tried to use all options from Face Management ?

Because a wrong setup of OpenCV can introduce crashes here. I just
experienced a lots this situation with Windows installer, where i
reduced OpenCV to minimal setup.

In fact after to lost few days with this library, i can said that
OpenCV is a big puzzle with a bad architecture. A wrong option can
have a weird effect at run-time.

So, packagers, please TAKE A CARE.

I currently try to identify which OpenCV component is mandatory to run
face management algorithms safety. It's long and fastidious : OpenCV
has around 30 components optional at compilation time. It's really a
mess.

Gilles Caulier