opencv

• prerequisite
• python 2.5 이상
• g++ 
• cmake
• pip install numpy
• sudo apt-get install python-dev

• install : linux
• http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.3.1/ 파일 다운
• tar -jxvf 다운로드 파일
• cd 압축해제 폴더
• mkdir release
• cd release
• cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_PYTHON_SUPPORT=ON ..
• make && sudo make install

• invert 반전
• http://www.cs.iit.edu/~agam/cs512/lect-notes/opencv-intro/opencv-intro.html

• threshold
• http://opencv.itseez.com/doc/tutorials/imgproc/threshold/threshold.html#basic-threshold