Estimating the Size of a Crowd with OpenCV and a Raspberry Pi 4 2, image processing with opencv and RPi4, opencv RPi4, Rpi4 openCV, crowd size with RPi4, crowd size with image processing, crowd size with opencv Departments:Computer EngineeringComputer ScienceModules:Camera ModulesMicrocontrollers:Raspberry Pi 4Codings:PythonWelcome to the next tutorial on our raspberry pi four python programming. In the previous article, we built a system that recognizes when two people are in physical contact using OpenCV ...