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360度可环视全屏体三维显示系统

360° Viewable Volumetric 3D Display System with Full Screen

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摘要

研究了一种全屏体三维显示系统。以数字微镜器件 (DMD)作为空间光调制器 (SLM),将三维模型的螺旋切片序列投射到高速旋转的螺旋屏上,由于视觉暂留效应,切片序列便被人眼感知为 360度可环视的三维立体图像。重点分析了基于全屏的成像空间的性能,研究了基于增强型体心立方 (EBCC)采样算法的体素化策略。实验结果表明,增强型 BCC采样算法较基于笛卡尔栅格的采样算法减少了 30%的体素量,同时避免了体素模型出现空洞;基于全屏的体三维空间超过原来半屏体三维显示系统的 4倍,生成的图像亮度均匀;在 400 mm×300 mm×250 mm的长方体形成像空间内显示的立体图像,可从 360°范围内任意视点裸眼观看。

Abstract

A volumetric display system with full helical screen is presented. When a series of helical slices of a 3D model is projected onto a rotating helical screen through a Digital Micro-mirror Device (DMD) as a fast Space Light Modulator (SLM), due to the persistence of vision, human observers are able to perceive a 360°viewable 3D image by fusing together the successive helical slices into a 3D image. We analyze the performance of the 3D imaging space created by a rotating helical screen, and emphasize the volexlization approach based on Enhanced Body-center Cubic (EBCC) sampling algorithm. Experimental results demonstrate that, compared with the voxelization approach based on Cartesian lattice, voxel hole avoidance and a voxel reduction of more than 30% are both achieved through utilizing EBCC sampling algorithm, and the prototype is capable of generating images with consistent brightness in a imaging space three times bigger than our former system with half screen. In the cuboid imaging space with length 400 mm, width 300 mm and height of 250 mm, 3D images can be viewed from any viewpoint without any special eyewear.

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中图分类号:TN141;TP391

DOI:10.3969/j.issn.1003-501x.2011.11.022

所属栏目:显示技术

基金项目:国家 863资助项目 (2007AA01Z338);江苏省博士后科研资助基金 (1101087C)

收稿日期:2011-08-29

修改稿日期:2011-10-09

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作者单位    点击查看

刘影:南京航空航天大学机电学院解放军理工大学工程兵工程学院,南京 210007
潘文平:南京航空航天大学民航学院,南京 210016
张赵行:中国科学院自动化研究所,北京 100190
刘永:大连市路灯管理处,辽宁大连 116021
陈兴华:上海飞机设计研究院,上海 200436

联系人作者:刘影(lyshadow71@163.com)

备注:刘影(1975-),女(汉族),辽宁大连人。博士后,讲师,研究工作包括机电工程与爆破仿真。

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引用该论文

LIU Ying,PAN Wen-ping,ZHANG Zhao-xing,LIU Yong,CHEN Xing-hua. 360° Viewable Volumetric 3D Display System with Full Screen[J]. Opto-Electronic Engineering, 2011, 38(11): 124-129

刘影,潘文平,张赵行,刘永,陈兴华. 360度可环视全屏体三维显示系统[J]. 光电工程, 2011, 38(11): 124-129

被引情况

【1】张少军,徐熙平. 360°高阶非球面反射式全景镜头设计. 光学 精密工程, 2018, 26(8): 1977-1984

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