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)
齐浩程 1于迅博 1张钊赫 1桑新柱 1颜玢玢 1高鑫 1邢树军1
作者信息
- 1. 北京邮电大学电子工程学院,北京 100876
- 折叠
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.
Abstract
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(165 viewpoints with a grayscale of 256×256×256).
关键词
三维显示系统/光场显示/体像素/灰阶等级Key words
3D display system/light-field display/voxel/grayscale level引用本文复制引用
基金项目
国家重点研发计划(2023YFB3611500)
国家自然科学基金(62175015)
出版年
2024
NETL
NSTL
万方数据