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基于光线空间插值的任意视点绘制 被引量：2

Arbitrary Viewpoint Rendering Based on Ray-Space Interpolation
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摘要 本文提出了一种基于改进动态规划的光线空间插值方法,区别于传统的动态规划算法,本文先利用扫描线间的平滑约束来消除条纹效应,并采用增量计算方案来加速动态规划算法中最耗时的匹配代价计算.然后,采用以视点为中心的视差估计方法插值出稠密的光线空间数据.最后,从光线空间数据快速生成高质量的任意视点图像.该方案采用Middlebury和3DTV数据库作为测试数据,实验结果表明,新方法在计算效率和生成视点图像的PSNR上优于块匹配插值方法和视差域滤波方法. This paper presents an improved dynamic programming（DP）based ray-space interpolation for arbitrary view ren- dering.Different from the conventional DP method,a smoothing constraint of inter-scanlines is applied to eliminate the ＂streaking＂ artifact, and the most time-consuming step of computing matching cost is carried out by an incremental computation scheme. Then, dense ray-space data are interpolated by a view-centered disparity estimation method. Finally, arbitrary viewpoint image with high quality can be rendered fi：om this dense ray-space easily. The proposed scheme is evaluated on the Middlebury data set and 3DTV test data. The experimental results show that the PSNR and computational efficiency of the proposed rendering method are much higher than that of the other two schemes.
作者 蒋刚毅 范良忠 郁梅 陈恳
机构地区 宁波大学电路与系统研究所 南京大学计算机软件新技术国家重点实验室 浙江大学宁波理工学院
出处 《电子学报》 EI CAS CSCD 北大核心 2009年第8期1799-1803,共5页 Acta Electronica Sinica
基金 国家自然科学基金(No.60872094,No.60832003) 教育部新世纪人才支持计划项目(No.NCET-06-0537) 教育部博士点基金(No.200816460003) 宁波市自然科学基金(No.2008A610024)
关键词 任意视点绘制 动态规划 光线空间插值 arbitrary view rendering dynamic programming ray-space interpolation
分类号 TP391 [自动化与计算机技术—计算机应用技术]
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参考文献10

  • 1Smolic A, Kimata H, Vetro A. Development of MPEG standards for 3D and free viewpoint video[ A ]. Proc SPIE 6016 [ C]. Boston: SPIE Press, Boston, Nov. 2005.60160R.
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同被引文献23

  • 1Fujii T, Tanimoto M. Free-viewpnint television based on the ray-space representation [C] //Proceedings SP1E IT- Com. Boston : SPIF ,2002 : 175- 189.
  • 2Tanimoto M. Ow, rview of free viewpoint television [C]// Proceedings of IEEE Conference on Muhimedia and Expo. New York :IEEE ,2009 : 1552-1553.
  • 3郁梅,蒋刚毅.琏于特征点办向的光线-空间插值方法[J].计算机辅助设汁与图形学学报,2005,17(11):165-171.
  • 4Siu A M K, l,au R W H. Image registration for image-based rendering [ J ]. IEEE Transactions on Image Processing, 2005,14 ( 2 ) : 241 - 252.
  • 5Lowe D G. Object recognition from local scale, invariant features [ C ] //Proceedings of IEEE International Conference on Computer Vision. Kerkyra:lEEE, 1999 : 1150-1157.
  • 6Mourad Ouaret, Frederic Dufaux ,Touradj Ebrahimi. Multiview distributed video coding with encoder driven fusion [ C ]//Proceedings of the European Conference on Signal Processing. New York : IEEE,2007 : 181-184.
  • 7Yang Run-ping. A ray space interpolation algorition based on improved dynamic programming [C]//Proceedings of International Conference on Signal Processing Systems. Dalian : IEEE ,2010:26-30.
  • 8Li Wen-feng, Zhou Jin, Li Bao-xin, et al. Virtual view specification and synthesis for free viewpoint television [J]. IEEE Transactions on Circuit & Systems for Video Technology, 2009,17 ( 4 ) : 533- 546.
  • 9Ling Houy, Auy O C, Mengyao Maz, et al. Free view generation in ray-spaee via the radon transform [ C ]//Pruceedings of International Conference on Neural Networks & Signal Processing. Nanjing: IEEE ,2008:671-675.
  • 10Uemori T,Yendo T,Fujii T,et al. View generation by rayspace method in circular camera setup for FTV [ C ] // Proceedings of 3DTV Conference:the True Vision-Capture, Transmission and Display of 31) Video. lIstanbul: IEEE, 2008 : 233- 236.

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电子学报
2009年 第8期

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