In this tutorial, we will show you how to install OpenCV on CentOS 7. For those of you who didn’t know, OpenCV (Open Source Computer Vision Library) is an open-source, highly optimized computer library mainly used in applications for image processing. It has a variety of inbuilt images processing functions helping you to get started easily. It runs on Linux, Windows, Mac OS, iOS, and Android.
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 7 server.
Install OpenCV on CentOS 7
Step 1. First, let’s start by ensuring your system is up-to-date.
Step 2. Installing dependencies for OpenCV.
Use the following commands to install all required dependencies for compiling OpenCV:
First, Download and unarchive OpenCV archive as below:
Next, compile and install OpenCV:
Then, configure the required variables:
To test your OpenCV installation, you can download extra test data from the OpenCV extra repository:
In the cmake build directory, you will find several test executables named in the same kind of format opencv_test_*. Run anyone you are interested in to perform a test. Example below:
Congratulations! You have successfully installed OpenCV. Thanks for using this tutorial for installing OpenCV on CentOS 7 system. For additional help or useful information, we recommend you to check the official OpenCV web site.