目前的视频监控里,图像可分为两种,一种是枪机、半球等摄像机拍摄的固定图像,角度固定,在摄像机视角外的画面无法被监控;另一种是球机、云台摄像机拍摄到的图像,可跟踪动态目标,也可以可根据需要拉近拉远视野,但都需手动控制。但是,在监控一个较广的区域,比如单位大门内外的小广场、围墙、停车场等处, The current video surveillance, the image can be divided into two kinds, one is the bolt, hemisphere and other cameras to shoot a fixed image, a fixed angle, outside the camera perspective can not be monitored; the other is the ball machine, PTZ camera The captured image can track the dynamic target, but also can zoom in to broaden the field of vision, but need to be manually controlled. However, when monitoring a wider area, such as the small square inside and outside the unit’s gate, the fence, the car park, etc.,