![]() ![]() When the CMake build system is complete, you should see something like below:Ĥ) Start the compilation process: make -j2Ĭhange the flag -jaccording to your processor. D OPENCV_EXTRA_MODULES_PATH=~/opencv_build/opencv_contrib/modules \ Set up an OpenCV build with CMake: cmake -D CMAKE_BUILD_TYPE=RELEASE \ If you want to install an older version of OpenCV, do so cdto the directory opencvand opencv_contriband run git checkout ģ) Once the download is complete, create a temporary build directory, and go to it: cd ~/opencv_build/opencv mkdir build & cd build To install the latest version of OpenCV from source, perform the following steps:ġ) Install the required and optional dependencies: sudo apt install build-essential cmake git pkg-config libgtk- 3 -dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libjpeg-dev libpng-dev libtiff-dev gfortran openexr libatlas-base-dev python3-dev python3-numpy libtbb2 libtbb-dev libdc1394- 22 -devĢ) Clone the OpenCV contrib and OpenCV repository with the following command: mkdir ~/opencv_build & cd ~/opencv_buildgitĪt the time of writing, the default version in the github repository is version 4.2.0. ![]() It will be optimized for your particular system, and you will have complete control over the build options. Installing OpenCV from Sourceīuilding the OpenCV library from source is the recommended way to install OpenCV. If you want to install OpenCV with Python 2 bindings, install the package python-opencv. To verify the installation, import the module cv2and print the OpenCV version: python3 -c "import cv2 print(cv2._version_)" 3.2.0 How to Install GNOME 40.1 Stable Update on Ubuntu The above command will install all the packages needed to run OpenCV. To install the OpenCV Python module, enter the command: sudo apt update At the time of writing, Ubuntu’s default repository is OpenCV version 3.2, which is a bit behind the latest version. The OpenCV Python module is available from the standard Ubuntu repositories. Install OpenCV from Ubuntu 20.04 Repository If you want to install the latest stable version of OpenCV from source, scroll down on this tutorial page.Ĭhoose one of the installation options that suits you best. This tutorial, shows how to install OpenCV on Ubuntu 20.04 and Ubuntu 21.04, For most people, the easiest way to install OpenCV on Ubuntu is to install it using apt package management. OpenCV can take advantage of multi-core processing and GPU acceleration features for real-time operations. OpenCV is used for a variety of applications, including medical image analysis, creating street scene images, surveillance video, detecting and recognizing faces, tracking moving objects, extracting 3D models, and more. ![]() OpenCV (Open Source Computer Vision Library) is open-source software with bindings for C++, Python, and Java. ![]()
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