In this tutorial we will show you how to install OpenCV on CentOS 8. For those of you who didn’t know, OpenCV (Open Source Computer Vision Library) is an open source computer vision library with bindings for C++, Python, and Java and supports all major operating systems. It can take advantage of multi-core processing and features GPU acceleration for real-time operation. OpenCV can be deployed on various platforms, including Windows, Linux, Android, iOS, etc.
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 through the step by step installation OpenCV on a CentOS 8 server.
Install OpenCV on CentOS 8
Step 1. First, let’s start by ensuring your system is up-to-date.
Step 2. Installing OpenCV on CentOS 8.
- Install OpenCV from the CentOS Repository:
Now verify that OpenCV library exists by running:
- Install OpenCV from the Source:
Next, clone both OpenCV’s and OpenCV contrib repositories:
Once the download is completed, create a temporary build directory, and switch it:
Then, configure the OpenCV build with the following CMake command:
Start the compilation process by using the following command:
Next, create symlink opencv4.pc file to the /usr/share/pkgconfig directory and run ldconfig to rebuild the libraries cache:
Now we check the OpenCV version:
To verify the Python cv2 module run:
python3-c"import cv2; print(cv2.__version__)"
Congratulation’s! You have successfully installed OpenCV. Thanks for using this tutorial for installing OpenCV on CentOS 8 system. For additional help or useful information, we recommend you to check the official OpenCV website.