一种基于空间方位角的投影瞄准算法

摘要

In order to solve the problem of the deviation between the actual aiming position in the real environment and the virtual aiming position in the projection scene in virtual aiming training system,a projection aiming algorithm based on spa-tial azimuth is proposed.The projection plane space is located and the space rectangular coordinate system is established ac-cording to the spatial azimuth information collected by electronic compass.The coordinate difference caused by the screen projection distortion is eliminated through converting the space rectangular coordinate to pixel coordinate.The deviation problem caused by the rotation of the pivot point is solved by analyzing the motion trajectory.Experimental results show that according to the algorithm,the actual aiming position is unified,and the position deviation caused by the projection dis-tortion and the pivot rotation is reduced effectively.The training effect is guaranteed.%针对虚拟瞄准训练系统中真实环境的现实瞄准位置与投影场景的虚拟瞄准位置存在偏差的问题,提出了一种基于空间方位角的投影瞄准算法.通过电子罗盘采集投影区域空间方位角信息进行投影平面空间定位并建立空间直角坐标系,然后通过空间直角坐标与像素坐标的转换,消除屏幕投影形变引起的坐标差异,运用运动轨迹分析解决支点转动引起的偏差.实验结果表明,该算法能够实现实际瞄准位置与虚拟瞄准位置的统一,减小因投影形变、支点转动等因素引起的瞄准位置偏差,达到预期的精度要求,保证训练效果.