install opencv on debian, tested on raspberry pi (debian wheezy)it takes "long time" for compiling opencv library. please be patient.Reference: http://opencv.willowgarage.com/wiki/InstallGuide_Linux

install_opencv_debian.sh

#install esseintal packages for opencv
apt-get -y install build-essential
apt-get -y install cmake
apt-get -y install pkg-config
apt-get -y install libgtk2.0-dev libgtk2.0
apt-get -y install zlib1g-dev
apt-get -y install libpng-dev
apt-get -y install libjpeg-dev
apt-get -y install libtiff-dev
apt-get -y install libjasper-dev
apt-get -y install libavcodec-dev
apt-get -y install swig
#install xserver and x11 util for remote X environment usage (optional)
apt-get -y install xserver-xorg-core xserver x11-xserver-utils

#download opencv and decompress it
## please use wget to download it on sourceforge
cd ~
tar -zxvf opencv-2.4.5.tar.gz
cd opencv-2.4.5/
mkdir release
cd release/

#build and install
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
make
make install

# re-load ldconfig
ldconfig -v

#check opencv version
pkg-config --modversion opencv

#after install opencv you can execute opencv_test_core to make a simple test
cd ~/opencv-2.4.5/release/bin
./opencv_test_core

Is it really working on raspberry pi?