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首页> 外文会议>Digital photography VIII >Spatial Analysis of Discrete Plenoptic Sampling
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Spatial Analysis of Discrete Plenoptic Sampling

机译：离散全光采样的空间分析

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Plenoptic cameras are intended to fully capture the light rays in a scene. Using this information, optical elements can be applied to a scene computationally rather than physically—allowing an infinite variety of pictures to be rendered after the fact from the same plenoptic data. Practical plenoptic cameras necessarily capture discrete samples of the plenoptic function, which together with the overall camera design, can constrain the variety and quality of rendered images. In this paper we specifically analyze the nature of the discrete data that plenoptic cameras capture, in a manner that unifies the traditional and focused plenoptic camera designs. We use the optical properties of plenoptic cameras to derive the geometry of discrete plenoptic function capture. Based on this geometry, we derive expressions for expected resolution from a captured plenoptic function. Our analysis allows us to define the "focused plenoptic condition," a necessary condition in the optical design that distinguishes the traditional plenoptic camera from the focused plenoptic camera.
机译：全光摄像机旨在完全捕获场景中的光线。使用此信息，光学元素可以通过计算而不是物理方式应用于场景，从而可以在事后根据相同的全光数据渲染出无数种图片。实用的全光相机必须捕获全光功能的离散样本，再加上整体相机设计，可能会限制渲染图像的多样性和质量。在本文中，我们以统一传统和聚焦全光相机设计的方式，专门分析了全光相机捕获的离散数据的性质。我们使用全光相机的光学特性来推导离散全光功能捕获的几何形状。基于这种几何形状，我们从捕获的全光函数中得出期望分辨率的表达式。我们的分析使我们能够定义“聚焦全光条件”，这是光学设计中区分传统全光相机与聚焦全光相机的必要条件。

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