Optical metasurfaces provide a prospective platform for analog image processing. Recently, they have been used for applications such as denoising and edge enhancement, but their potential for spatial correlation analysis has not been investigated yet. In this paper, we propose a silicon-based metasurface for image detection by spatial optical Fourier filtering in the analog domain. We study, both experimentally and numerically, the constraints of the proposed method for rotated and scaled images and discuss possible solutions to overcome imposed limitations. Our research opens up new possibilities in various real-time image processing applications.

中文翻译：

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米氏共振超表面增强模拟光学相关性


光学超表面为模拟图像处理提供了一个有前景的平台。最近，它们已被用于去噪和边缘增强等应用，但其空间相关分析的潜力尚未得到研究。在本文中，我们提出了一种基于硅的超表面，用于通过模拟域中的空间光学傅立叶滤波进行图像检测。我们通过实验和数值研究了所提出的旋转和缩放图像方法的约束，并讨论了克服强加的限制的可能解决方案。我们的研究为各种实时图像处理应用开辟了新的可能性。