Introduction
OpenCV (Open Source Computer Vision Library) is an open-source computer vision and machine learning software library. This tutorial will guide you through the process of installing OpenCV on Ubuntu 22.04.
Prerequisites
Before you begin, ensure you have:
- An Ubuntu 22.04 system
- Root or sudo privileges
Step 1: Update System Packages
Update the package index and upgrade the system packages:
sudo apt update
sudo apt upgrade -y
Step 2: Install Dependencies
Install dependencies required for building OpenCV:
sudo apt install -y build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
Step 3: Download OpenCV Source Code
Clone the OpenCV and OpenCV-contrib repositories from GitHub:
git clone https://github.com/opencv/opencv.git
git clone https://github.com/opencv/opencv_contrib.git
Step 4: Build OpenCV
Create a build directory and navigate into it:
mkdir -p ~/opencv/build
cd ~/opencv/build
Generate the Makefile using CMake:
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules -D BUILD_EXAMPLES=ON ..
Build OpenCV using the generated Makefile:
make -j$(nproc)
Step 5: Install OpenCV
Install OpenCV:
sudo make install
Step 6: Verify Installation
Verify the installation by checking the OpenCV version:
pkg-config --modversion opencv4
Conclusion
Congratulations! You have successfully installed OpenCV (Open Source Computer Vision Library) on Ubuntu 22.04. You can now start using OpenCV for computer vision and machine learning tasks.
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