中文摘要：

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.

英文摘要：

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.