Python is a growingly widely used programming language. It is a high-level free language with a fairly flat learning curve. It contains a large collection of publicly downloadable libraries.An application for monitoring and recognizing faces in videos and webcams that may be used for a variety of purposes. The study’s goal is to do a thorough investigation of face detection utilizing the Open Source Computer Vision Library (Open CV).OpenCV from Intel is a free and open-source image and video analysis library. It is connected to computer imaging in terms of features and image identification, as well as machine learning. In addition, the study discusses the OpenCV implementations and classifiers employed in these applications, such as image analysis, face identification, face recognition, and visual object. Furthermore, the author discusses the variety of literary assessments of OpenCV implementations in machine learning disciplines like face detection and identification, identification of facial emotions like grief, rage, and pleasure, or identification of a person's age and gender characteristics.