All-optical image processing using metasurfaces is advancing due to its high speed, integrability, and low energy consumption, yet background noise and clutter hinder the progress. In this work, a real-time optical image processor is introduced, using a metal-dielectric-metal film to perform spatial band-pass filtering in momentum space enabling high-resolution edge detection and real-time dynamic denoising.
- Sandeep Kumar Chamoli
- Chunqi Jin
- Wei Li
