OpenCV waitKey() Explained: How to Pause and Get Keyboard Input

cv2.waitKey(200) is a method in OpenCV (a computer vision library) which waits for a specified time (in milliseconds) for a keyboard event. If a key is pressed during this time, the ASCII value of the key is returned. If no key is pressed, -1 is returned. This method is often used to display images or videos in a window and wait for user input or a specific amount of time before moving to the next frame or closing the window.