假设激光投射到目标物体上，同时位于同一平面的摄像头画面内能够捕捉到激光照射点（画面最亮的点），用于激光测距，可以使用现有的opencv库，很容易作进一步性能改进-Assuming the laser is projected onto the target object is located within the same plane of the camera screen at the same time be able to capture the laser irradiation point brightest point (screen) for the laser rangefinder, and can use existing opencv library, it is easy for the further improvement in performance