基于数码相机参数还原的多屏拼接几何校正技术  

Multi-projector Display Based on Pre-correction of the Camera

作　　者：黄淼[1] 周志光[1] 陶煜波[1] 林海[1] 

机构地区：[1]浙江大学CAD&CG国家重点实验室,杭州310058

出　　处：《计算机辅助设计与图形学学报》2010年第10期1803-1809,共7页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家"八六三"高技术研究发展计划(2006AA01Z325)

摘　　要：数码相机的几何校正技术已经成为多屏拼接过程中的关键技术,然而传统的线性几何校正结果并不令人满意,新兴的非线性几何校正方法由于过程烦琐而不能得到广泛应用.在传统的线性校正方法的基础上,通过对样本图片的采样和计算获得数码相机的扭曲系数,提出一种基于相机参数还原的多屏拼接几何校正技术,并将其应用于多屏拼接系统,获得了高分辨率图像的显示结果.实验结果表明,文中方法有效地提升了多屏拼接的精度,具有一定的实用性.The geometric camera calibration is a key step in a multi-projector display wall system.It is observed that for a multi-projector display wall system calibration,the traditional linear calibration methods are not satisfactory in terms of calibration accuracy,but non-linear calibration approaches are too complicated to be practical.In this work,a novel technique is presented.After an initial linear calibration,our technique further takes into account the non-linear lens distortions through a image sampling process.The experimental results show that our proposed technique can significantly improve the accuracy of the projected images,it is simple but of practicality.

关 键 词：预校正 多屏拼接 几何校正 非线性扭曲 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]