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背投式多投影系统中各向异性问题的研究

DOI: 10.11834/jig.20150405

Keywords: 多投影系统,背投,各向异性,最佳观测点

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Abstract:

目的针对背投式多投影系统中存在的各向异性问题,提出一套行之有效的解决方案.方法首先,为了解决以静态观众为主体的多投影系统各向异性问题,基于反馈机制提出了以特定位置为中心的“最佳观测域”,并在该区域内实现了真正的视觉无缝画面校正;然后,基于视觉人体跟踪技术进一步提出了以特定交互者为中心的“动态最佳观测域”框架,并结合模糊预测控制思想从人体重心检测、跟踪和投影仪亮度实时补偿等3个方面对该框架内的各个组成模块的关键技术进行了阐述.结果实验结果显示,利用交互者运动的时空连续性优化后的动态最佳观测域算法,具有较好的鲁棒性和实时性.同时,与其他类似方法相比获得了更好的视觉无缝校正效果,其中观测距离为1m、3m和5m时,对应的亮度样本标准差分别为17.11、13.17和9.2.结论提出的各向异性解决方案,将实时反馈信号引入校正过程中,有效提高了输出画面质量.通过实验测试和性能评估,验证了文中方法的可行性.

References

[1]  Brown M S, Majumder A, Yang R G. Camera-based calibration techniques for seamless multiprojector displays [J]. IEEE Transactions on Visualization and Computer Graphics, 2005, 11(2):193-206. [DOI: 10.1109/TVCG.2005.27]
[2]  Majumder A, Stevens R. Color nonuniformity in projection-based displays: analysis and solutions [J]. IEEE Transactions on Visualization and Computer Graphics, 2004, 10(2):177-188. [DOI: 10.1109/TVCG.2004.1260769]
[3]  Bhasker E S, Majumder A. Geometric modeling and calibration of planar multi-projector displays using rational bezier patches[C]//Proceedings of IEEE Conference on Computer Vision and Pattern Recognition. Minneapolis, MN: IEEE Computer Society Press, 2007: 1-8. [DOI: 10.1109/CVPR.2007.383466]
[4]  Wang X H, Yang H B, Lin H. Geometry calibration for multi-projector tiled display wall[J]. Journal of Computer-Aided Design & Computer Graphics, 2008, 20(6): 707-712. [王修晖,杨海波,林海. 多投影显示墙的几何校正[J]. 计算机辅助设计与图形学学报, 2008, 20(6): 707-712.]
[5]  Wang X H, Hua W, Bao H J. Screen calibration techniques for multi-projector tiled display wall[J]. Journal of Software, 2007, 18(11):2955-2964.[王修晖,华炜,鲍虎军. 面向多投影系统的画面校正技术[J].软件学报, 2007,18(11):2955-2964.][DOI:10.1360/ jos182955]
[6]  Zhou Y X, Qin K H, Luo J L. GPU-based geometric and photometric corrections for multi-projector autostereoscopic display [J]. Journal of Computer-Aided Design & Computer Graphics, 2011, 23(4): 561-570. [周艳霞, 秦开怀,罗建利. 多投影仪自由立体显示的GPU 几何及亮度校正技术[J].计算机辅助设计与图形学学报, 2011, 23(4): 561-570.]
[7]  Zhu B, Xie L J, Yang T J, et al. An adaptive calibration algorithm for projected images in daily environment [J]. Journal of Computer-Aided Design & Computer Graphics, 2012, 24(7): 941-948.[朱博,解利军,杨廷俊,等.自适应复杂环境的投影图像校正算法[J].计算机辅助设计与图形学学报, 2012, 24(7): 941-948.]
[8]  Sajadi B, Lazarov M, Majumder A, et al. Color seamlessness in multi-projector displays using constrained gamut morphing [J]. IEEE Transactions on Visualization and Computer Graphics, 2009, 15(6): 1317-1326. [DOI: 10.1109/TVCG.2009.124]
[9]  HeiKKila J, Silven O. A four-step camera calibration procedure with implicit image correction[C]//Proceeding of the IEEE Conference on Computer Vision and Pattern Recognition. New York: IEEE Computer Society Press, 1997: 1106-1112.[DOI: 10.1109/CVPR.1997.609468]
[10]  Nayar S K, Mitsunaga T. High dynamic range imaging: spatially varying pixel exposures [C]//Proceeding of the IEEE Conference on Computer Vision and Pattern Recognition. Hilton Head Island, SC: IEEE Computer Society Press, 2000: 472-479.[DOI: CVPR.2000.855857]
[11]  Zhu C J, Zhu S A. Motion detection and object tracking based on statistical model and active contour [J]. Journal of Zhejiang University: Engineering Science, 2006, 40(2): 249-253.[王长军,朱善安.基于统计模型和活动轮廓的运动目标检测与跟踪[J].浙江大学学报: 工学版, 2006, 40(2): 249-253.]

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