光线追迹引导的全光相机设计
Ray Tracing-Guided Design of Plenoptic Cameras
摘要：
全光相机的设计需要两个不同的光学系统的组合，即主透镜和微透镜阵列。并且，虽然常规相机的构造过程主要涉及将图像聚焦到单个平面上，但是在全光相机的情况下，可能存在附加要求，诸如预定义的景深或相邻微透镜图像中的视差的期望范围。由于这种复杂性，多个全光相机设置的手动创建通常是耗时的任务。在这项工作中，我们假设一个模拟框架，以及给出的主要镜头数据，并提出了一种方法来计算剩余的光圈，传感器和微透镜阵列参数下的不同的约束条件。我们的光线跟踪为基础的方法，导致模型优于他们的吊坠产生的常用的傍轴近似在图像质量方面，同时仍然满足所需的限制。包括30个全光相机设计的实施和评估设置都是公开可用的。
英文摘要：
The design of a plenoptic camera requires the combination of two dissimilar optical systems, namely a main lens and an array of microlenses. And while the construction process of a conventional camera is mainly concerned with focusing the image onto a single plane, in the case of plenoptic cameras there can be additional requirements such as a predefined depth of field or a desired range of disparities in neighboring microlens images. Due to this complexity, the manual creation of multiple plenoptic camera setups is often a time-consuming task. In this work we assume a simulation framework as well as the main lens data given and present a method to calculate the remaining aperture, sensor and microlens array parameters under different sets of constraints. Our ray tracing-based approach is shown to result in models outperforming their pendants generated with the commonly used paraxial approximations in terms of image quality, while still meeting the desired constraints. Both the implementation and evaluation setup including 30 plenoptic camera designs are made publicly available.
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