How do you use OpenCV?

Here is how to use OpenCV:

1. Install OpenCV: Install the OpenCV library files on your operating system. This can be done by compiling from source code, installing through a package manager, or using precompiled binary files for installation.
2. Create Project: Begin by creating a new project and adding the OpenCV library to it.
3. Import OpenCV library: Integrate the OpenCV library into the project to utilize its functions and classes.
4. Load image or video: Use OpenCV functions to load image or video files.
5. Process images or videos: apply functions from OpenCV for tasks like image filtering, edge detection, and color conversion.
6. Display the processed image or video by using functions from OpenCV.
7. Save image or video: Using OpenCV functions to save processed images or videos to a file.
8. Release resources: Use OpenCV functions to release resources used, such as closing opened video files.

Here is the basic usage of OpenCV, specific use cases can be achieved by calling and combining functions provided by OpenCV based on specific needs.