基于片间相关性的光线空间插值与视点绘制研究  

Ray Space Interpolation and Viewpoint Rendering Based on Inter-slice Correlation

作　　者：赵映儿[1] 蒋刚毅[1,2] 郁梅[1,2] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]北京大学视觉与听觉信息处理国家重点实验室,北京100871

出　　处：《光子学报》2009年第1期228-232,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(60472100);教育部新世纪优秀人才计划(Nect-06-0537);教育部科学技术研究重点项目(2060059);宁波市自然科学基金(2007A610037);宁波大学校科研基金(XY0700064)资助

摘　　要：提出了基于片间相关性的光线空间插值算法,利用邻近参考片已知视差,快速预测当前片视差,使得当前片视差估计的搜索限制在预测视差附近的小范围内进行,从而大大降低了计算复杂度.根据视差参考方式的不同,设计了三种实现方案.实验结果表明,采用双向视差参考方案插值生成的光线空间片不但信噪比高、绘制视点图像主客观质量较高,而且插值与绘制速度也有了明显提高.Based on the analysis of inter-slice correlation in ray space,a new ray space interpolation method was proposed. Using the disparities of neighboring slices, the searching range of disparity estimation was restricted arround the predicted disparity so that the computational complexity of disparity estimation was reduced. Three schemes were proposed according to differer/t reference of dispatiry during ray space data interpolation. The experimental results show that the scheme of bidirectional reference of parallax can obviously improve the speed of ray space interpolation and achieve higher PSNR and well subjective image quality.

关 键 词：光线空间 片间相关性 光线空间插值 视点绘制 自由视点电视 

分 类 号：TN911.73[电子电信—通信与信息系统]