Quanta image sensor (QIS) is a new type of image sensors with single-photon sensitivity. However, the existing literature on QIS has been focusing on monochromatic signals. In this article, we discuss how color imaging can be made possible by designing color filter arrays for QIS and other small pixels. Designing color filter arrays for small pixels is challenging because maximizing the light efficiency while suppressing aliasing and crosstalk are conflicting tasks. We present an optimization-based framework which unifies several mainstream color filter array design methodologies. Our method offers greater generality and flexibility. Compared to existing methods, the new framework can simultaneously handle luminance sensitivity, chrominance sensitivity, cross-talk, anti-aliasing, manufacturability and orthogonality. Extensive experimental comparisons demonstrate the effectiveness of the framework.

中文翻译：

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用于 Quanta 图像传感器的滤色器阵列

Quanta 图像传感器 (QIS) 是一种具有单光子灵敏度的新型图像传感器。然而，现有的关于 QIS 的文献一直专注于单色信号。在本文中，我们将讨论如何通过为 QIS 和其他小像素设计滤色器阵列来实现彩色成像。为小像素设计滤色器阵列具有挑战性，因为在抑制混叠和串扰的同时最大限度地提高光效率是相互矛盾的任务。我们提出了一个基于优化的框架，它统一了几种主流的滤色器阵列设计方法。我们的方法提供了更大的通用性和灵活性。与现有方法相比，新框架可以同时处理亮度灵敏度、色度灵敏度、串扰、抗锯齿、可制造性和正交性。