I used to have to compile the source code and do all the painful stuff. but luckily, we don't have to do it anymore. Fast way: pip install opencv-contrib-python Slow and painful way: ok I will update and

I decided to document what I learn about OpenCV as my days going. This is day 1: input/output scripts. Let's dive right into it. We have input fuction: cv2.imread(filename, flags) and output function: