How To Install OpenCV on Rocky Linux 9

In this tutorial, we will show you how to install OpenCV on Rocky Linux 9. For those of you who didn’t know, OpenCV is a popular and widely used computer vision library that offers a vast collection of algorithms and tools. It is designed to provide efficient and real-time image and video processing capabilities. OpenCV supports various programming languages, including C++, Python, and Java, making it accessible to a broad range of developers.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of OpenCV computer vision library on Rocky Linux. 9.

Prerequisites

• A server running one of the following operating systems: Rocky Linux 9.
• It’s recommended that you use a fresh OS install to prevent any potential issues.
• SSH access to the server (or just open Terminal if you’re on a desktop).
• An active internet connection. You’ll need an internet connection to download the necessary packages and dependencies for OpenCV.
• A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install OpenCV on Rocky Linux 9

Step 1. The first step is to update your system to the latest version of the package list. To do so, run the following commands:

sudo dnf check-update
sudo dnf install dnf-utils
sudo dnf groupinstall -y "Development Tools

Step 2. Install Required Dependencies.

OpenCV has some dependencies that need to be installed on your system. Execute the following command in the terminal to install the necessary dependencies:

sudo dnf install cmake gcc gcc-c++ gtk2-devel pkgconfig
sudo dnf install python3 python3-devel numpy

Step 3. Installing OpenCV on Rocky Linux 9.

By default, OpenCV is not available on Rocky Linux 9 base repository. You need to download the OpenCV source code and extract it. Execute the following commands in the terminal:

wget -O opencv.zip https://github.com/opencv/opencv/archive/4.7.0.zip
unzip opencv.zip

After the source code is extracted, navigate to the extracted directory using the terminal:

cd opencv-4.7.0

Create a build directory and navigate into it:

mkdir build
cd build

Generate the build files using CMake:

cmake ..
make
sudo make install

To verify that OpenCV is installed correctly, open a new terminal window and execute the following command:

pkg-config --modversion opencv4

Congratulations! You have successfully installed OpenCV. Thanks for using this tutorial for installing OpenCV computer vision library on your Rocky Linux 9 system. For additional help or useful information, we recommend you check the official OpenCV website.