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Raed CHAMMAM
Asked: 2015-08-05 04:41:32 +0800 CST

Where is OpenCV installed?

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I have followed this guide to install OpenCV 2.4.8

OpenCV documentation says that I should find OpencV usr/local/include/opencv/ yet I find nothing.

Can someone tell me where to find the installed OpenCV files?

EDIT I'm not sure why the script installed OpenCV 2.4.8 instead of 2.4.9.

But I just found the files here here /usr/include/opencv and /usr/include/opencv2 I am not sure how that works but it does.

opencv

3 Answers

  1. Best Answer

    OpenCV is installed via checkinstall, have a look at the installer script.

    Therefore you can check the installed files via

    dpkg -L opencv-<version>

    Eg:

    dpkg -L opencv-2.4.8

    If you have installed OpenCV via another script as you commented, open the script, find the line

    make install

    and replace with

    sudo checkinstall

    After that install checkinstall via

    sudo apt-get install checkinstall

    Now start the installer script again and check the installed files with

    dpkg -L opencv

    The installer script does exactly the same as before, but now it creates and installs a deb package.

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  2. Currently OpenCV 2.4 is provided via

    sudo apt-get install libopencv

    (if packages were not resolved try: libopencv* or opencv*)

    Using package distribution from the Ubuntu repository may require you to update your indexes and packages (to be able to find actual OpenCV version available):

    sudo apt-get update
sudo apt-get upgrade

    After apt-get installing OpenCV, the latest available version (2.4.x) will be installed into your default system path:

    /usr/local/lib - shared libraries (e.g. /usr/local/lib/libopencv-core2.4.x)
    /usr/local/include - header files (e.g. /usr/local/include/opencv2)

    See this guide (this is not my guide, so I am not aware if it is good or bad)

    • 3

  3. Generally I follow this pattern:

    cmake ..
make
sudo make install

    Add /usr/local/lib to /etc/ld.so.conf.d/opencv.conf

    sudo ldconfig

    Then you can use 

    pkg-config --libs --cflags opencv

    to get all include and libs on Ubuntu

    • 2