虚拟发射装置在投影系统中的定位方法研究  

Research on Positioning Method of Virtual Shooting Device in Projection System

作　　者：王全玉[1] 米庆[1] 申鹏洋[1] 刘昕[1] 

机构地区：[1]北京理工大学计算机学院,北京100081

出　　处：《系统仿真学报》2012年第10期2060-2065,共6页Journal of System Simulation

基　　金：中国人民解放军总装备部预研课题(513040103)

摘　　要：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。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.

关 键 词：空间定位 图像识别 摄像机标定 虚拟现实 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]