计算全息快速算法及其再现像承载器件的机理研究

The computational efficiency and space carry capacity of reconstructed images are the bottlenecks that restrict the practical progress of computer-generated holograms (CGH) and its 3D display. In this project, complex surface object is chosen as research subject. The fast algorithm for CGH is developed based on computational conformal geometry theory. Combining the affine transformation with parallel iterative operation, the improved angular spectrum algorithm is the key research. Complex data of CGH is studied to improve the computational efficiency based on parallel algorithms. The theoretical models of sub-micron pixel, vertical electrode and parallel driving method are established based on the mechanism of liquid crystal spatial light modulator (LC-SLM). The useful method is studied to increase the phase modulation depth and viewing angle. It can provide a new idea for holographic 3D display of high quality. 3D display system of CGH is set up based on LCoS-SLM. The factors are analyzed through experiments, which can affect the display effect. Project aims to solve the basic problems in this field and can provide effective technical support for CGH and 3D display. Therefore, this research has important theoretical value and practical significance.

计算效率和再现像的空间承载技术是制约计算全息及其三维立体显示走向实用化的根本问题。本项目以复杂曲面物体为研究对象，基于计算共形几何理论，建立计算全息快速算法的函数模型。结合仿射变换和并行迭代运算，重点研究改进的角谱算法，并借助硬件并行算法，解决提高复杂数据的计算全息算法效率问题。基于液晶空间光调制器机理，通过建立亚微米像素、垂直电极和分块平行驱动的理论模型，研究解决调制深度和视场角的有效方法，为实现高质量的全息三维显示提供新思路。并搭建基于硅基液晶(LCoS)空间光调制器的计算全息再现系统，通过多组对比实验，分析影响三维显示效果的因素。项目立足解决计算全息及其三维显示领域的基本难题，可为其实用化提供有效的技术手段和理论基础，具有重要的学术价值和实际意义。

计算效率和再现像的空间承载技术是制约计算全息及其三维立体显示走向实用化的根本问题。本项目以复杂曲面物体为研究对象，基于计算共形几何理论，建立计算全息快速算法的函数模型。结合仿射变换和并行迭代运算，重点研究改进的角谱算法，并借助硬件并行算法，解决提高复杂数据的计算全息算法效率问题。基于液晶空间光调制器机理，通过建立亚微米像素、垂直电极等理论模型，研究解决调制深度和视场角的有效方法，为实现高质量的全息三维显示提供新思路。空间光调制器的计算全息再现系统，通过多组对比实验，分析影响三维显示效果的因素。项目立足解决计算全息及其三维显示领域的基本难题，可为其实用化提供有效的技术手段和理论基础，具有重要的学术价值和实际意义。