摘要
几何失真校正技术是虚拟现实投影系统中的关键技术之一,文章针对曲面多通道大屏幕投影显示系统,提出了一种在极坐标系中基于纹理贴图的几何校正方法。该方法采用角等分原则将二维纹理网格化后在三维坐标系中进行贴图从而实现几何校正,可以适用于投影面为柱面、球面、极坐标参数曲面以及投影机非正投影等情况。试验结果表明该方法能够快速的完成几何畸变校正和通道间的拼接融合,具有良好的实际应用价值。
Visualization simulation system based on multiprojectors provides highly immersive displays. Calibration of geometrical distortion is one of its key techniques. A new algorithm was proposed based on polar coordinates to correct geometrical distortion. By mapping an average angle-divided grid to the three-dimensional display surface, the algorithm can realize geometrical calibration for large-scale display systems with curved screens and oblique projectors. Experimental results indicate that the new solution is both effective and valuable in multiprojector visualization simulation system.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2006年第z2期493-496,共4页
Journal of System Simulation
基金
北京市自然科学基金项目资助(3062014)
新世纪优秀人才计划资助(NCET-05-0115)
关键词
虚拟现实
几何校正
纹理贴图
角等分网格
边缘融合
virtual reality
texture mapping
geometrical calibration
average angle-divided grid
edge blending
