opencv compilation script

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g++ -o test_1 test_1.cpp `pkg-config opencv --cflags --libs`

---------------------------------- using gcc and cmake ----------------------------------

* Create a cmake file CMakeLists.txt
* Add the following to cmake file
    cmake_minimum_required(VERSION 2.8)
    project( DisplayImage )
    find_package( OpenCV REQUIRED )
    add_executable( DisplayImage DisplayImage.cpp )
    target_link_libraries( DisplayImage ${OpenCV_LIBS} )
* Run this in the terminal
    cd <DisplayImage_directory>
    cmake .
    make
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