In the three-dimensional (3D) light field display (LFD), display quality is the most important concern, and from an intuitive perspective, the quality will decline with the increase of display depth. When evaluating display quality, definition is one of the indispensable indicators. However, there is no universally accepted quantitative measure in the 3D display like resolution in the two-dimensional (2D) display. In this work, a voxel analysis model is utilized to investigate the variation of definition with depth and two resolutions, spatial resolution and perceived visual resolution, with corresponding measurement methods are proposed to quantify the definition of 3D LFDs. The experiments are performed on two LFD devices, and the relationship between definition and display depth is obtained and analyzed. The display effect at different depths and the impact of human eye characteristics on the perceived display definition is studied.

中文翻译：

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三维光场显示器的清晰度随显示深度变化的评估

在三维（3D）光场显示（LFD）中，显示质量是最重要的关注点，从直观的角度来看，质量会随着显示深度的增加而下降。在评价显示质量时，清晰度是不可缺少的指标之一。然而，3D 显示器中没有像二维 (2D) 显示器中的分辨率那样普遍接受的定量测量。在这项工作中，利用体素分析模型来研究清晰度随深度和两种分辨率（空间分辨率和感知视觉分辨率）的变化，并提出了相应的测量方法来量化 3D LFD 的清晰度。在两台LFD设备上进行实验，得到并分析了清晰度与显示深度之间的关系。研究了不同深度下的显示效果以及人眼特性对感知显示清晰度的影响。