摘要
头戴式三维显示设备是虚拟现实、增强现实和元宇宙等领域人机交互界面的常用呈现载体,当前,面向头戴式三维显示图像质量测评的方法和系统依然较为缺乏。提出了基于人眼视觉特性的三维显示质量评价理论,设计了基于人眼视觉特性的三维显示质量测评方法和系统,实现了对头戴式三维显示深度表达能力、畸变、极限可分辨能力和视场角等参量的定量化测评。利用双目视觉原理测试深度表达能力,利用像点弯曲程度和多项式变换关系表示畸变程度,利用条纹MTF值和曲线谷峰比评价极限可分辨能力,利用小孔成像原理拟合视场角。针对两款待测试头戴式显示设备,测得的深度相对误差小于3.5%,畸变程度小于3%,视场角分别为77°1′44″和86°56′26″。测评结果与人眼主观感受具有高度的一致性,相关方法和系统具有较高的工程适用性,有望在头戴式三维显示质量测评与设计改进方面发挥重要的作用。
Head-mounted three-dimensional(3D)display device is a common presentation carrier of human-computer interaction interfaces in the fields of virtual reality,augmented reality and metaverse.Currently,the image quality evaluation methods and systems for head-mounted 3D display are insufficient.A 3D image quality evaluation theory based on the human visual system was proposed,and a 3D image quality evaluation method and the corresponding system were designed.Some parameters including depth reconstruction,distortion,ultimate resolution,and field angle were quantitatively evaluated.The depth reconstruction was tested based on binocular vision principle,the distortion was expressed by curvatures and polynomial transformations of specific points,the ultimate resolution was evaluated by MTF and valley-to-peak ratio of patterns,and the field angle was measured based on pinhole imaging method.In the test of two head-mounted display devices,the relative error of depth reconstruction is smaller than 3.5%,the distortion is smaller than 3%,and the field angle are 77°1′44″and 86°56′26″,respectively.The evaluation results are highly consistent with the subjective perception of the human eyes.The proposed method and system have high engineering applicability,which are expected to play an important role in the quality assessment and design improvement of the head-mounted 3D display.
作者
王雪琦
何泽浩
朱巧芬
曹良才
WANG Xueqi;HE Zehao;ZHU Qiaofen;CAO Liangcai(School of Mathematics and Physics Science and Engineering,Hebei University of Engineering,Handan 056038,China;Department of Precision Instrument,Tsinghua University,Beijing 100084,China)
出处
《应用光学》
CAS
北大核心
2024年第3期598-607,共10页
Journal of Applied Optics
基金
国家重点研发计划项目(2021YFB2802300)。
关键词
三维显示
头戴式显示
显示质量
图像质量测评
three-dimensional display
head-mounted display
image quality of display
image quality evaluation
作者简介
王雪琦(1998—),女,硕士研究生,主要从事三维显示评测研究。E-mail:wangxueqi202107@163.com;通信作者:曹良才(1977—),男,博士,教授,主要从事全息成像和全息显示研究。E-mail:clc@mail.tsinghua.edu.cn。
