真实场景的三维视频采集及显示  

Three-dimensional Capture and Display of Real Scene with Video Speed

作　　者：李勇[1] 卢世江[1] 宋芳[2] 王辉[1] 金洪震[1] 

机构地区：[1]浙江师范大学信息光学研究所,浙江金华321004 [2]中国人民解放军装备指挥学院,北京101416

出　　处：《光子学报》2011年第11期1706-1710,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(No.60702078)资助

摘　　要：提出了一种真实场景三维视频采集及彩色显示的方法.设计了一种采用条纹投影的实时三维成像系统及采用液晶空间光调制器的实时全息彩色三维显示系统.在三维成像系统中采用π相移正弦条纹与编码图案结合实现绝对相位测量,从而可以测量孤立物体.同时对采用数字微镜的投影仪进行改造,实现高速投影,并与高速摄像机配合实现三维视频采集.首先利用实时三维成像系统同时获取三维场景的彩色强度像和距离像;然后根据这些三维成像数据,设计和制作计算菲涅耳全息图;最后在实时全息彩色三维显示系统中再现.三维信息的采集和显示速度达到了60帧每秒.An approach for capture and display three-dimensional real scene with video speed was proposed.A real-time three-dimensional imaging system using fringe projection was designed.And a real-time color holographic display system using liquid crystal spatial light modulator was designed.Two fringe patterns with phase shift π and an encoding pattern were adopted in 3D imaging system.Absolute phase was obtained and isolated objects could be measured.A high speed projector was obtained by modifying a projector using digital micromirror device.Three-dimensional capture with video speed was realized by combining the modified projector and high speed camera.The color image and range image of three-dimensional scene was captured with the proposed three-dimensional imaging system.Then,Fresnel holograms were produced with these three-dimensional data.Finally,color three-dimensional images were reconstructed with proposed display system.The speed of capture and display reaches 60 fps.

关 键 词：三维成像 条纹投影 计算机制全息 三维显示 

分 类 号：O438.1[机械工程—光学工程]