The camera, also known as computer camera, computer eye, electronic eye, etc., is a video input device, is widely used in video conferencing, telemedicine and real-time monitoring.
Cameras can be divided into two categories: digital cameras and analog cameras. Digital cameras can convert analog video signals generated by video capture devices into digital signals, which can then be stored in a computer. Analog cameras capture video signals that must be converted to digital mode by a specific video capture card, and compressed before they can be converted to a computer.