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Study of the Detection System for Onscreen Contents Shooting (Countermeasure against Information Leakage by Video Recording/Photo Shooting)

With the expanded use of the smartphone and digital camera, unauthorized bringing out of information by photo/video shooting is reported. The authors have investigated whether detection of photo/video recording is possible focusing on the motion of a person and the feasibility of a system that quickly detects recording of the contents displayed on the screen. The system detects a camera held in one hand, both hands, and a fixing device, and uses algorisms to prevent erroneous detection and missed detection. In the experiments conducted for verification of the detection capability of the prototype system, highly accurate detection capability was demonstrated.