Find OpenCV Version Installed on Ubuntu

Question

I would like to find out what version of OpenCV is installed on my computer  i am running Ubuntu 10 04   Is there a simple way to check it if   If not then can i find out the directories where files  samples  etc  are installed     I am trying to run some code that i have already tested on another computer with OpenCV 2 3 installed and i get many errors

User · Accepted Answer

You can look at the headers or libs installed. pkg-config can tell you where they are:

pkg-config --cflags opencv
pkg-config --libs opencv

Alternatively you can write a simple program and print the following defs:

CV_MAJOR_VERSION
CV_MINOR_VERSION

A similar question has been also asked here:

User · Answer

1  Direct Answer  Try this      sudo updatedb    locate OpenCVConfig cmake   For me  I get        home pkarasev3 source opencv build OpenCVConfig cmake   To see the version  you can try      cat  home pkarasev3 source opencv build OpenCVConfig cmake   giving              SET OpenCV VERSION 2 3 1             2  Better Answer    sudo make install  is your enemy  don t do that when you need to compile update the library often and possibly debug step through it s internal functions  Notice how my config file is in a local build directory  not in  usr something    You will avoid this confusion in the future  and can maintain several different versions even  debug and release  for example    Edit  the reason this questions seems to arise often for OpenCV as opposed to other libraries is that it changes rather dramatically and fast between versions  and many of the operations are not so well-defined   well-constrained so you can t just rely on it to be a black-box like you do for something like libpng or libjpeg  Thus  better to not install it at all really  but just compile and link to the build folder

User · Answer

To install this product you can see this tutorial  OpenCV on Ubuntu  There are listed the packages you need  So  with     dpkg -l   grep libcv2   dpkg -l   grep libhighgui2   and more listed in the url you can find which packages are installed   With     dpkg -L libcv2   you can check where are installed  This operative is used for all debian packages

User · Answer

The other methods here didn t work for me  so here s what does work in Ubuntu 12 04  precise    On Ubuntu and other Debian-derived platforms  dpkg is the typical way to get software package versions   For more recent versions than the one that  Tio refers to  use   dpkg -l   grep libopencv   If you have the development packages installed  like libopencv-core-dev  you ll probably have  pc files and can use pkg-config    pkg-config --modversion opencv

User · Answer

There is also a flag CV VERSION which will print out the full version of opencv

[c++] Find OpenCV Version Installed on Ubuntu

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