Holographic near-eye displays are a promising technology to solve long-standing challenges in virtual and augmented reality display systems. Over the last few years, many different computer-generated holography (CGH) algorithms have been proposed that are supervised by different types of target content, such as 2.5D RGB-depth maps, 3D focal stacks, and 4D light fields. It is unclear, however, what the perceptual implications are of the choice of algorithm and target content type. In this work, we build a perceptual testbed of a full-color, high-quality holographic near-eye display. Under natural viewing conditions, we examine the effects of various CGH supervision formats and conduct user studies to assess their perceptual impacts on 3D realism. Our results indicate that CGH algorithms designed for specific viewpoints exhibit noticeable deficiencies in achieving 3D realism. In contrast, holograms incorporating parallax cues consistently outperform other formats across different viewing conditions, including the center of the eyebox. This finding is particularly interesting and suggests that the inclusion of parallax cues in CGH rendering plays a crucial role in enhancing the overall quality of the holographic experience. This work represents an initial stride towards delivering a perceptually realistic 3D experience with holographic near-eye displays.

翻译：全息近眼显示是一种有望解决虚拟与增强现实显示系统中长期挑战的前沿技术。近年来，研究者提出了多种计算机生成全息（CGH）算法，这些算法采用不同类型的目标内容进行监督，例如2.5D RGB深度图、3D焦栈和4D光场。然而，算法选择与目标内容类型对感知效果的影响尚不明确。本研究构建了一套全彩色、高质量全息近眼显示的感知测试平台。在自然观看条件下，我们考察了不同CGH监督格式的效果，并通过用户研究评估其对三维真实感的感知影响。结果表明，针对特定视点设计的CGH算法在实现三维真实感方面存在明显缺陷。相反，包含视差线索的全息图在不同观看条件（包括眼盒中心）下均优于其他格式。这一发现尤为有趣，表明在CGH渲染中纳入视差线索对提升全息体验的整体质量具有关键作用。本研究是为实现全息近眼显示感知真实三维体验迈出的初步探索。