摘要
要针对多通道曲幕投影显示系统的几何校正问题,提出一种基于动态纹理切割的几何校正算法.该算法首先按照不同的修正程度对曲幕进行切割;其次通过切割点寻找合适的纹理切割位置得到一系列条带状纹理四个角的坐标在校正前后的关系;最后利用这个关系完成帧缓存纹理重映射,从而实现了几何校正。在双通道曲幕投影系统中进行实验的结果和实际场景应用表明,算法能够有效提高几何校正效率,且无需专业的图像采集反馈设备,在成本上具有一定的优势。
Aiming at the problem of geometric calibration for multichannelcurved screen projected display system,a correction algorithm was proposed based on dynamic texture segmentation.Firstly,the curved screen is cutt according to the degree of correction.Secondly,the appropriate texture position through the cutting spot to obtain a series of stripped texture and the relationship between before and after correction of four angle coordinates are seek.Finally,this relations is used to complete the frame buffer texture remapping to correct geometrical distortion.Experimental results on double channel projected display system indicate that the new solution could complete the geometric distortion correction effective.At the same time,without the specialized image gathering feedback equipment,it has a great advantage in cost.
出处
《科学技术与工程》
北大核心
2014年第5期115-119,共5页
Science Technology and Engineering
基金
国家科技支撑计划基金(2013BAH45F02)
国家自然科学基金(61379080)资助
关键词
纹理切割
几何校正
帧缓存
纹理重映射
texture segmentation
geometric calibration
frame buffer
texture remapping
