Light-field technology has significant potential for future three-dimensional (3-D) television (TV) services in which 3-D objects or spaces are shown with a strong sense of presence. However, the physical specifications required for light-field displays to show the typical scenes depicted in current broadcasting are not yet known. In particular, angular resolution is a representative specification that describes the image quality related to the depth reconstruction; we investigated the angular resolutions required for providing future 3-D TV services assuming the display of substantially deep scenes and multiple viewing positions in typical viewing environments with small-, medium-, and large-sized displays. We made every effort to minimize the requirements on the display specifications for presenting 3-D scenes with substantial depth by using ‘depth compression expressions’ that manipulate the scene geometry so that viewers do not feel that the scenes appear unnatural. We conducted subjective evaluation experiments on the simulated views on the light-field displays with various angular resolution settings. As a result, we found that the required angular resolutions depended on the viewing environment and were 0.51, 11.2, and 12.1 views per degree in the small-, medium-, and large-sized display environments, respectively. We also obtained pixel-pitch and micro-lens specifications that would present the estimated angular resolutions on a light-field display and developed a design goal for future display-device development.

中文翻译：

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估计光场广播所需的角分辨率

光场技术对于未来的三维 (3-D) 电视 (TV) 服务具有巨大的潜力，其中以强烈的存在感显示 3-D 对象或空间。然而，光场显示器显示当前广播中描绘的典型场景所需的物理规格尚不清楚。特别是，角分辨率是描述深度重建相关图像质量的代表性规范；我们研究了提供未来 3-D 电视服务所需的角分辨率，假设在具有小型、中型和大型显示器的典型观看环境中显示相当深的场景和多个观看位置。我们尽一切努力通过使用操纵场景几何的“深度压缩表达式”来最大限度地减少对呈现具有相当深度的 3-D 场景的显示规范的要求，这样观众就不会觉得场景显得不自然。我们对具有各种角度分辨率设置的光场显示器上的模拟视图进行了主观评估实验。结果，我们发现所需的角度分辨率取决于观看环境，在小、中和大尺寸显示环境中分别为每度 0.51、11.2 和 12.1 次观看。我们还获得了像素间距和微透镜规格，这些规格将在光场显示器上呈现估计的角分辨率，并为未来的显示设备开发制定了设计目标。