The angle coverage algorithm of mobile object in wireless camera sensor networks

Visual sensor networks offer surveillance applications, particularly object tracking. This study proposed an angle converge algorithm for mobile object to cover all angles of a mobile object in wireless camera sensor networks. This algorithm mainly applies to a security monitor system that can detect the object tracks and need to catch the 360° images of mobile object. This study designs a node selection algorithm to find a set of coverage nodes. The field of views of coverage nodes can cover all angles of mobile object. When the object moves, the set of coverage nodes has to update to maintain full coverage angle. We have to select the minimum number of nodes to cover full coverage angle. The wireless camera sensor network is random deployed in the monitor area environment. Each sensor node has rotational camera lens, and each camera can rotate 360 degrees. When a node detects a mobile object in the monitor area, it starts the tracking task and selects a set of coverage nodes to cover the mobile object. The field of view of camera is turned to follow the tracks of object. The mobile object is monitored by the proposed algorithm.