虚拟发射装置在投影系统中的定位方法研究

针对现有技术的局限性,提出了一种在三维空间中确定一个物体相对于投影平面的空间六个自由度的方法。阐述了基于激光发射和图像识别的定位技术,采用虚拟发射装置向已知投影平面发射多束激光,通过已标定的摄像机拾取光束在平面的投射图案并计算投射点的位置,进而计算虚拟发射装置相对于平面的位置姿态,对影响定位精度的因素进行了分析。该技术在虚拟消防训练以及虚拟射击训练系统中得到了应用。

Research on Positioning Method of Virtual Shooting Device in Projection System

A new approach was proposed to identify the six degrees of freedom of a shooting device based on the projection plane in a three-dimensional space,aiming to overcome the limitations in current methods.This positioning technique adopts both laser emission and image recognition technologies.First,virtual projection equipment mounted on the shooting device emits multiple beams of laser lights to a given projection plane.Second,the projection points on the plane are picked up via a calibrated camera.Third,the positions of projecting points are computed.Furthermore,with the data acquired above,the position and attitude of the virtual shooting device based on the plane can be acquired.At last,the factors affecting the positioning accuracy are analyzed.The method has been applied in the system of virtual fire-fighting training.