量化光学和渲染管道对增强现实显示器空间分辨率的贡献

IF 1.7 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Matthew Johnson, Chumin Zhao, Amitabh Varshney, Ryan Beams
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引用次数: 0

摘要

增强现实头戴式显示器(AR HMD)的空间分辨率由三个部分决定:光学、显示和渲染管道,其中包括抗锯齿方法。因此,要评估 AR HMD 的空间分辨率,就必须分离和量化这些组件的贡献。我们展示了一种利用点扩散函数(PSF)分析量化光学性能和渲染管道对 AR HMD 空间分辨率贡献的方法。在这种方法中,成像光度计在 AR HMD 上捕捉一系列渲染场景,这些场景由不同抗锯齿(AA)方法下尺寸不断增大的球体阵列组成。我们发现,时间抗锯齿(TAA)和多采样抗锯齿(MSAA)与无抗锯齿的性能非常接近。然而,快速近似抗锯齿(FXAA)会导致较小渲染目标的亮度降低,以及较大目标的空间分辨率不同。最后,我们在多个 HMD 上重复了我们的方法,并对整个视场的空间分辨率的依赖性进行了表征。这些测量结果表明,光学因素对空间分辨率的贡献存在明显的不均匀性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Quantifying the optical and rendering pipeline contributions to spatial resolution in augmented reality displays

Quantifying the optical and rendering pipeline contributions to spatial resolution in augmented reality displays

The measured spatial resolution of augmented reality head-mounted displays (AR HMDs) is determined by three components: optics, display, and the rendering pipeline, which includes the anti-aliasing method. Therefore, separating and quantifying the contributions from these components is necessary for evaluating the spatial resolution of AR HMDs. We demonstrate a method for quantifying the contributions from the optical performance and the rendering pipeline on the spatial resolution of AR HMD using point-spread function (PSF) analysis. In this method, an imaging photometer captures a series of rendered scenes on the AR HMD that consist of arrays of spheres of increasing sizes with different anti-aliasing (AA) methods. The contributions from the optics, display, and anti-aliasing methods can be separated, and we find that temporal anti-aliasing (TAA) and multisample anti-aliasing (MSAA) are in good agreement with the performance of no AA. However, fast approximate anti-aliasing (FXAA) results in decreased luminance for smaller rendered targets and a different spatial resolution for larger targets. Finally, we repeated our methods on multiple HMDs and characterized the dependence of the spatial resolution across the field of view. These measurements show significant non-uniformity in the optical contribution to the spatial resolution.

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来源期刊
Journal of the Society for Information Display
Journal of the Society for Information Display 工程技术-材料科学:综合
CiteScore
4.80
自引率
8.70%
发文量
98
审稿时长
3 months
期刊介绍: The Journal of the Society for Information Display publishes original works dealing with the theory and practice of information display. Coverage includes materials, devices and systems; the underlying chemistry, physics, physiology and psychology; measurement techniques, manufacturing technologies; and all aspects of the interaction between equipment and its users. Review articles are also published in all of these areas. Occasional special issues or sections consist of collections of papers on specific topical areas or collections of full length papers based in part on oral or poster presentations given at SID sponsored conferences.
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