Integral videography autostereoscopic display using multiprojection

Various techniques of autostereoscopic three-dimensional (3D) display for displaying real 3D information have been investigated in recent years. We have performed research and application of integral videography (IV), which is an animated display technique based on the principle of integral photography (IP). Although IV and IP are ideal ways to display 3D images, their spatial viewing resolution and high-speed image rendering algorithm must be improved. The pixel pitch of the display and the lens pitch are the main factors affecting IV image quality. We improved the image quality by increasing the number and density of the pixels. Parallel image processing and displaying method were also developed for animated IV imaging. We have created a scalable high-resolution image using multiple projection and project it onto a small screen to achieve high-density pixels using long-focal-length projection optics. Furthermore, an image calibration method was developed for geometrical correction and color modulation to generate seamless IV images. We evaluated the developed device by displaying an X-ray computed tomography (CT) image. Measurement of the geometrical accuracy of the reproduced IV images demonstrated that the spatial resolution of the display system matched that by theoretical analysis. Experimental results showed that our technique is very effective in obtaining 3D animated images with practical spatial resolution. © 2006 Wiley Periodicals, Inc. Syst Comp Jpn, 37(5): 34–45, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/scj.20424