Tunable Nonlocal Metasurfaces for Edge Computing and Processing

Current thermal-imaging systems rely heavily on digital post-processing to perform feature extraction and image processing, increasing latency, power consumption and system complexity. Recent advances in nonlocal metasurfaces have demonstrated analog optical operations including spatial differentiation, edge detection and image filtering by engineering the optical response in momentum space. However, most prior demonstrations have been limited to coherent illumination in controlled laboratory en...