王雪琦, 何泽浩, 朱巧芬, 曹良才. 面向头戴式三维显示的图像质量测评方法和系统[J]. 应用光学.
引用本文: 王雪琦, 何泽浩, 朱巧芬, 曹良才. 面向头戴式三维显示的图像质量测评方法和系统[J]. 应用光学.
WANG Xueqi, HE Zehao, ZHU Qiaofen, CAO Liangcai. Image quality evaluation method and system for head-mounted three-dimensional display[J]. Journal of Applied Optics.
Citation: WANG Xueqi, HE Zehao, ZHU Qiaofen, CAO Liangcai. Image quality evaluation method and system for head-mounted three-dimensional display[J]. Journal of Applied Optics.

面向头戴式三维显示的图像质量测评方法和系统

Image quality evaluation method and system for head-mounted three-dimensional display

  • 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。该文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。

     

    Abstract: Head-mounted three-dimensional (3D) display is a common presenter for virtual reality, augmented reality and metaverse. Currently, the image quality evaluation methods and systems for head-mounted 3D display are insuffient in quantity and low in accuracy. In this work, a 3D image quality evaluation theory based on the human visual system (HVS) is proposed. A 3D image quality evaluation method and the corresponding system are designed. Some parameters including depth reconstruction, distortion, ultramate resolution, and field of view are quantitatively evaluated. In this paper, the depth reconstruction is tested based on binocular principle, the distortion is expressed by curvatures and polynomial transformations of specific points, ultramate resolution is evaluated by MTF and valley-to-peak ratio of patterns, and the field of view is 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 of view angles are 77°1′44″ and 86°56′26″, respectively. The evaluation results are highly consistent with the subjective perception of the human eyes. The propsed method and system have high applicability, which are expected to be widely applied in the fields of qualitive evaluation and design optimization for head-mounted 3D display.

     

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