Ninja will automatically detect number of available processor cores and does not need -j option. 1: Install side packages required for OpenCV with Ubuntu (only validated for: Ubuntu 16.04): apt-get update apt-get install -y libglib2.0.
Make can run multiple compilation processes in parallel, -j option means "run jobs simultaneously". Install OpenCV from Ubuntu Repository At this point, you can easily install your OpenCV from the Ubuntu repository. The aforementioned script will install all the necessary packages for OpenCV. sudo apt install libopencv-dev python3-opencv. In order to install OpenCV, issue the command listed below. First of all, we need to update our apt cache by entering. Installing OpenCV is possible using the standard Ubuntu repository. Changes in the configuration like disabling a dependency, modifying build scripts or switching sources to another branch are not handled very well and can result in broken workspace. Installing OpenCV with Ubuntu Repository OpenCV is available inside the official Ubuntu repository. Installing a pre-compiled version of OpenCV can lead to not take advantage of the possibilities of your CUDA-capable hardware, which can be very powerful in terms of GPU acceleration. NOTE: this guide is also compatible and has been tested in Ubuntu 20.04. If you experience problems with the build process, try to clean or recreate the build directory. A screenshot of the OpenCV compilation process. Refer to the OpenCV installation overview and OpenCV configuration options reference tutorials for details and full configuration options reference. To install OpenCV using the terminal on Ubuntu: su - apt-get update apt-get install build-essential apt-get install libavformat-dev apt-get install x264 v4l-utils ffmpeg apt-get install libcv2.3 libcvaux2.3 libhighgui2. Note Configure process can download some files from the internet to satisfy library dependencies, connection failures can cause some of modules or functionalities to be turned off or behave differently.
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