Method and apparatus of human detection and privacy protection method and system employing the same

The privacy protection method and system using the same and a human detection method and apparatus. Privacy protection system using the motion information between frames, the motion area detection unit for detecting at least one movement area from the current frame image; Detecting a person by using the shape information of the person with respect to each of the motion region is detected, and the human detection and tracking unit to track the motion area detected by the person in a previous frame image with respect to a predetermined track area; or detected by the human mosaic processing unit for detecting and blur the detected face to the face displayed in the motion region tracking; And a storage unit for storing frame by frame with a predetermined label and location information for searching for the person detected, or tracking the motion area.