基于双层半色调图像联合编码的超多视点和高灰阶光场显示(特邀)  

Dense Viewpoints and Light-Field Display with High Grayscale Based on Joint Encoding of Double-Layer Halftone Images(Invited)

作　　者：齐浩程 于迅博 张钊赫 桑新柱[1] 颜玢玢[1] 高鑫 邢树军 Qi Haocheng;Yu Xunbo;Zhang Zhaohe;Sang Xinzhu;Yan Binbin;Gao Xin;Xing Shuju(School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《激光与光电子学进展》2024年第10期104-110,共7页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2023YFB3611500);国家自然科学基金(62175015)。

摘　　要：提出一种基于双层半色调图像联合编码的光场显示装置。该装置由准直背光、双层菲林片、滤光片、非球面柱透镜阵列和垂直扩散膜组成。菲林片用于显示半色调光场编码图像,滤光片用于实现红绿蓝三色通道,非球面柱透镜阵列和垂直扩散膜用于调控光线的出射方向。为了实现超多视点和高灰阶的光场显示,利用双层菲林光场编码提升视点数目,利用半色调图像联合优化方法合成双层菲林结构上的光场编码图像,扩展灰阶范围。在验证实验中,实现了超多视点、高灰阶、彩色的三维光场显示效果,视点数量达到165个,灰阶达到256×256×256。A light-field display device based on dual-layer halftone image joint encoding is proposed herein,consisting of collimated backlight,a double-layer film,a filter,an aspherical cylindrical lens array,and a vertical diffusion film.The double-layer film is used for displaying halftone light-field-encoded images;the filter is used for generating red,green,and blue channels;and the aspherical cylindrical lens array and the vertical diffusion film are used for controlling the direction of light emission.Dense viewpoints and high-grayscale light-field display are obtained with the double-layer film.The number of viewpoints is increased through light-field encoding,and light-field-encoded images are synthesized on double-layer film structures using a halftone image joint optimization method.Thus,the grayscale range is expanded.In a verification experiment,a three-dimensional light-field display effect with dense viewpoints,high grayscale,and color was realized(165viewpoints with a grayscale of 256X256X256).

关 键 词：三维显示系统 光场显示 体像素 灰阶等级 

分 类 号：TN27[电子电信—物理电子学]