DEVELOPMENT OF AUTOSTEREOSCOPIC 3D TV CAMERA SYSTEM

项目目标：本项目旨在开发一种新型3D电视系统，该系统可以在普通情况下记录3D物体，并在观看区实时显示不戴眼镜的3D图像。结果：1)阐明了透镜板三维图像的几何特征和优势。实验证实了一种新的光学器件，它可以同时实现相机眼睛的聚焦和眼睛方向的调整。光学放大/缩小观看区宽度是通过大口径透镜系统的配置完成的。2)设计了一种由垂直栅格型掩模和透镜片组成的接力透镜板。分辨率、亮度和可视区的垂直高度都得到了很大的提高。3)提出了一种消除视差精确交错的三维视频信号编辑中大容量记忆的方法，该方法需要与透镜片配准。4)研制了一种用8个CCD摄像设备同时记录8幅视差图像并将其编辑成三维视频信号的摄像系统。结合具有光束指数的高分辨率博朗管，成功记录并实时显示了水平和垂直方向尺寸为290mm × 220mm、深度为300mm的三维图像。在水平和垂直方向上的分辨率为250线，在深度上为视距的1.6%。3D图像在1/60秒内刷新，在博朗管前1000mm距离300mm视界宽度内，肉眼可看到视差清晰的无闪烁3D图像。首次展示了具有实用分辨率和可视区域的自动立体3D电视。

Objectives: This project aims to develope a new 3D TV system, which records 3D objects in ordinary circumstances and diplays the 3D images in real-time being seen without glasses in a viewing zone.Results: 1) The geometrical characteristics and advantages of lens-plate 3D images are clarified. A new optic, which performs focusing of the camera eyes and adjusting the driections of the eyes simultaneously, is experimentally confirmed. Optical magnification/reduction of viewing zone width are done with a configuration of large-aperture lens system.2) A relay-lens plate, which consists of vertical-grid-type masks and a lenticular sheet, is newly devised. Resolution, brightness and vertical height of the viewing zone are greately improved.3) A method to eliminate large-capacity memories in editting 3D video signal having precisely interleaved parallax images, which should be in registration with a lenticular sheet, is newly devised.4) A camera system, which records 8 parallax images simultaneously with 8 CCD camera devices and edits them into a 3D video signal, is newly developed. Combining with the high resolution Braun tube with beam-indexes, 3D images of 290mm x 220mm size in the horizontal and vertical directions and of 300mm in the depth are successfully Recorded and displayed in real-time. resoultions are 250 lines in both horizontal and vertical direction and 1.6% of distance of view in the depth. 3D images are refreshed in 1/60 sec. Flikerless 3D images with clear parallax are seen by the naked eye in 300mm viewing-zone width at 1000mm distance in front of the Braun tube.An autostereoscopic 3D TV with practical resolution and viewing zone was eemonstrated for the first time.