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After the facial recognition system is connected to the video surveillance system, the recognition software will search for facial information in the camera's field of view. If there is a face in the field of vision, it will detect it within a fraction of a second. It uses multi-scale algorithms to search for facial images at low resolution. An algorithm is a program that provides a set of instructions to complete a specific task. The system only switches to high-resolution search after detecting a shape similar to a head.

There are various recognition methods for facial recognition systems, but they usually involve a series of steps such as capture, analysis, and comparison, comparing your face with images stored in the database. The following is the basic process used by the FaceIt system to capture and compare images: