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清华大学学报(自然科学版)  2019, Vol. 59 Issue (4): 249-255    DOI: 10.16511/j.cnki.qhdxxb.2019.22.005
  计算机科学与技术 本期目录 | 过刊浏览 | 高级检索 |
基于柱镜光栅的超多视点大幅面立体画设计
谭祺瑞1, 路海明1, 卢增祥2
1. 清华大学 信息技术研究院, 北京 100084;
2. 北京永新视博数字电视技术有限公司, 北京 100085
Design of super multi-view large stereoscopicpainting based on lenticular lens
TAN Qirui1, LU Haiming1, LU Zengxiang2
1. Research Institute of Information Technology, Tsinghua University, Beijing 100084, China;
2. Beijing Novel-SuperTV Digital TV Technology Co., Ltd., Beijing 100085, China
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摘要 光栅立体画广泛应用于户外大型广告、巨幅海报及舞台背景墙。针对目前光栅立体画视点数少、立体感弱、视点串扰等问题,提出了基于柱镜光栅的超多视点大幅面立体画设计方法。根据人眼的视觉原理和柱镜的光传输特性,推导了柱镜厚度、曲率半径、光栅节距等参数的计算公式。设计了满足观看距离6 m、观看区域3 m、视点数59个的柱镜光栅。利用光学设计软件LightTools模拟了该系统的视点分布,视点宽度为50 mm,小于正常成年人眼瞳距。设计了圆弧形柱镜光栅减小视点串扰,视点串扰值为11.7%~15.8%。对模拟结果进行了实验验证,结果表明所设计的超多视点大幅面立体画满足自由立体观看的要求。
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谭祺瑞
路海明
卢增祥
关键词 光学设计大幅面立体画超多视点柱镜光栅    
Abstract:Stereoscopic paintings are widely used in outdoor advertisements, giant posters, and stage backgrounds. Current stereoscopic paintings have some defects, such as a few viewpoints, poor stereoscopic perception, and serious crosstalk. This paper describes a super multi-view large stereoscopic painting design. The formulas are derived based on the vision principle of human eyes and the optical transmission characteristics of a cylindrical lens to calculate the thickness of the cylindrical lens, the radius of curvature, and the grating pitch. The viewing distance is 6 m and the viewing area width is 3 m with 59 viewpoints. The viewpoint distribution is simulated by the optical design software called LightTools. The viewpoint width is 50 mm, which is less than the distance between normal adult pupils. The circular lenticular lens array is designed to reduce the crosstalk between viewpoints with crosstalk of 11.7%-15.8%. The simulation results are verified by experiments which show that the super multi-view large stereoscopic painting design meets the requirements for auto-stereoscopic viewing.
Key wordsoptical design    large stereoscopic painting    super multi- view    lenticular lens
收稿日期: 2018-10-12      出版日期: 2019-04-09
基金资助:中国博士后科学基金资助项目(2018M631472)
通讯作者: 路海明,研究员,E-mail:luhm@tsinghua.edu.cn     E-mail: luhm@tsinghua.edu.cn
引用本文:   
谭祺瑞, 路海明, 卢增祥. 基于柱镜光栅的超多视点大幅面立体画设计[J]. 清华大学学报(自然科学版), 2019, 59(4): 249-255.
TAN Qirui, LU Haiming, LU Zengxiang. Design of super multi-view large stereoscopicpainting based on lenticular lens. Journal of Tsinghua University(Science and Technology), 2019, 59(4): 249-255.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2019.22.005  或          http://jst.tsinghuajournals.com/CN/Y2019/V59/I4/249
  图1 4视点柱镜光栅光传输特性
  图2 (网络版彩图)4视图合成光栅图
  图3 柱面透镜光传输模型
  图4 4视点柱镜圆弧排列
  表1 立体画及柱镜光栅参数
  图5 (网络版彩图)柱面透镜光路图
  图6 9个视场角点列图
  图7 (网络版彩图)59个视点的光照度值与位置关系
  图8 (网络版彩图)9个视场角的视点能量密度分布
  图9 59个视点串扰值
  图10 视点宽度与图像带偏转角的关系
  图11 (网络版彩图)图像带不同偏转 角下的光斑图
  图12 9个视场角的视点图像
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