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OpenCV Link

The link to the OpenCV library for computer vision

OpenCV logo

Documentation of OpenCV 4.2.0

Contact: Email [email protected]

Get set up to build OpenCV from binaries

Here is a list of commands with the help of which developers can set up OpenCV

To install required packages: sudo apt-get install build-essential sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

Time to clone latest stable version of OpenCV and OpenCV Contribution: git clone https://github.com/opencv/opencv.git git clone https://github.com/opencv/opencv_contrib.git

Build OpenCV using CMake

Install CMake's latest release: Link to download page

Using command line CMake:

Run the command

cmake -S <path-to-source> -B <path-to-build>

Optional parameters: -DCMAKE_BUILD_TYPE=<build type> \

-DBUILD_SHARED_LIBS=<library built type(ON/OFF)> \

-DOPENCV_EXTRA_MODULES_PATH=<path to extra modules(The second repository which we have cloned above)> \

-DCMAKE_INSTALL_PREFIX=<directory, where built binaries has to be installed> \

Using CMake GUI:

  • In CMake Where is the source code field add the directory where opencv repository has been cloned. For example /home/hrachm/Documents/opencv.

  • In Where to build the binaries add the directory where you want to build binaries. Usually it is set in /home/hrachm/Documents/opencv/BuildDir.

  • Press Configure

  • Add optional parameters.

  • Press Generate. This will generate .sln file for Windows, Makefile for Linux and xcodeproj for Mac.

Using install.sh file:

Open the terminal and simply run install.sh script. This script except building opencv library with needed modeles, also builds my video overyling project and will generate VideoOverlying object file.

Test

After doing the steps I mentioned above, simply run ./run.sh bash script with approrpriate video paths

./run.sh <output video direcory>/ <background video path> <moving objects video paths>(As much as you want).

In my case: /run.sh /home/hrach/Documents/Results/ /home/hrach/Downloads/Results/background.mp4 /home/hrach/Downloads/Results/moving.mp4.

Or you can use BuildDir/VideoOverlying obj file, with appropriate video file arguments.(Same as ./run.sh)

I'm really sorry for meaningless video example(Anyway i think it is not too bad.) :).