Liao Hongen, Iwahara Makoto, Koike Takefumi, Hata Nobuhiko, Sakuma Ichiro, Dohi Takeyoshi
Graduate School of Information Science and Technology, University of Tokyo, Tokyo 113-8656, Japan.
Appl Opt. 2005 Jan 20;44(3):305-15. doi: 10.1364/ao.44.000305.
We propose a scalable high-resolution autostereoscopic display that uses integral videography (IV) and a seamless multiprojection system. IV is an animated extension of integral photography (IP). Although IP and IV are ideal ways to display three-dimensional images, their spatial viewing resolution needs improvement; the pixel pitch of the display and the lens pitch are the main factors affecting IV image quality. We improved the quality by increasing the number and density of the pixels. Using multiple projectors, we create a scalable high-resolution image and project it onto a small screen using long-focal-length projection optics. To generate seamless IV images, we developed an image calibration method for geometric correction and color modulation. We also fabricated a lens array especially for the display device. Experiments were conducted with nine XGA projectors and nine PCs for parallel image rendering and displaying. A total of 2868 x 2150 pixels were displayed on a 241 mm x 181 mm (302.4 dots/in.) rear-projection screen. The lens pitch was 1.016 mm, corresponding to 12 pixels of the projected image. Measurement of the geometric accuracy of the reproduced IV images demonstrated that the spatial resolution of the display system matched that of the theoretical analysis.
我们提出了一种可扩展的高分辨率自动立体显示器，它使用积分摄像（IV）和无缝多投影系统。IV是积分摄影（IP）的动态扩展。虽然IP和IV是显示三维图像的理想方式，但其空间观看分辨率有待提高；显示器的像素间距和透镜间距是影响IV图像质量的主要因素。我们通过增加像素数量和密度来提高质量。使用多个投影仪，我们创建了一个可扩展的高分辨率图像，并使用长焦投影光学器件将其投影到一个小屏幕上。为了生成无缝IV图像，我们开发了一种用于几何校正和颜色调制的图像校准方法。我们还专门为显示设备制作了一个透镜阵列。使用九台XGA投影仪和九台个人电脑进行了并行图像渲染和显示的实验。在一个241毫米×181毫米（302.4点/英寸）的背投屏幕上总共显示了2868×2150像素。透镜间距为1.016毫米，对应于投影图像的12个像素。对再现的IV图像的几何精度进行测量表明，显示系统的空间分辨率与理论分析的分辨率相匹配。
