基于波前动态扫描系统的计算全息三维显示技术研究

项目名称： 基于波前动态扫描系统的计算全息三维显示技术研究

项目编号： No.61505095

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 张浩

作者单位： 清华大学

项目金额： 20万元

中文摘要： 三维显示技术蕴藏着巨大的市场应用价值与科学研究价值，是显示领域的研究热点，并在军事、医疗、娱乐等领域有着广阔的应用前景。全息三维显示技术可以提供人眼视觉系统所需的全部深度感，是实现真三维显示的有效技术方案。本项目针对计算全息三维显示系统的空间带宽积受限问题，拟构建基于高帧频空间光调制器件的波前动态扫描系统，通过对三维场景波前信息的精确调制来实现系统空间带宽积的有效扩展，再利用GPU并行运算平台对复杂三维场景的计算全息图进行高质量的快速运算、编码与传输，实现刷新频率为60Hz，图像尺寸大于70mm×50mm，视场角为40度的动态全息三维显示。本项目的研究将有效地扩展动态计算全息三维显示系统的空间带宽积，提高三维全息图光学重建的视觉参数，从而促进计算全息三维显示技术的实用化。

中文关键词： 全息三维显示；计算全息；动态全息显示；全息重建；并行运算

英文摘要： Three-dimensional (3D) display technology has great value in both industry and research fields, and it is one of the hottest research areas in display technology. 3D display also has broad prospects in military, medical, and entertainment applications. Holographic 3D display can provide all the depth cues that human vision system can perceive, which is a promising technique to realize true 3D display. This project focuses on the space-bandwidth product limitation of the computer-generated holographic 3D display system, and plans to build a dynamic wavefront scanning system based on a high frame rate spatial light modulator (SLM) to expand the system space-bandwidth product by accurate modulation of the 3D wavefront information. Quality computer-generated holograms of complex 3D scenes are calculated, encoded and transmitted using a GPU parallel computing platform. The optical reconstruction system can provide dynamic holographic 3D display with frame rate of 60Hz, image size larger than 70mm×50mm, and viewing angle of 40 degrees. Space-bandwidth product of the dynamic holographic 3D display system can be expanded and the viewing performance of the 3D hologram during optical reconstruction can be enhanced with the implementation of this project, which would promote the practicality of computer-generated holographic 3D display techniques.

英文关键词： holographic 3D display;computer holography;dynamic holographic display;holographic reconstruction;parallel computing