How to resize images using Python OpenCV?

Let's, start with what is OpenCV. OpenCV or Open Source Computer Vision Library is an open-source and free to use library under the Apache 2.0 license. OpenCV is mainly used for computer vision, image processing, and machine learning tasks. The library was originally developed by Intel in 1999. OpenCV supports a variety of languages like C, Python, Java, etc., and can be used on Windows, Linux, Android, and Mac OS.