灯头照射角度可调节，并可根据现场工作需要实现光线定位。
Lamp with adjustable irradiation Angle, and according to the work need to implement the light localization.
透镜底部的摄像头通过收集反射回来的光线定位观众的位置，同时发光二极管的角度根据观众的移动发生改变。
A camera at the bottom of the lens tracks the viewers by collecting light coming the other way through the lens and the Angle of the LEDs changes to correspond to the viewers' movements.
在完成了路面区域的定位后，因为光线等环境变化引起的背景变化会影响运动检测的结果，所以需要对背景进行更新。
After the localization of the region of the road, we need to update the background because of the transformations of background caused by the changes of environment such as light.
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