Compact single-shot ranging and near-far imaging using metasurfaces
Image and Video Processing
2026-04-14 v1 Computer Vision and Pattern Recognition
Abstract
We present a metasurface imaging system capable of simultaneously capturing two images at close range (1-2~cm) and an additional image at long range (about 40~cm) on a shared photosensor. The close-range image pair focuses at 1.4~cm and 2.0~cm, respectively, which forms a focal stack, enabling passive ranging with an accuracy of 1~mm from 12~mm to 20~mm through a computationally efficient depth-from-defocus algorithm for a simplified scenario. The entire system is compact, with a total track length of 15~mm, making it suitable for seamless integration into edge platforms for defense and other resource-constrained applications.
Keywords
Cite
@article{arxiv.2604.10037,
title = {Compact single-shot ranging and near-far imaging using metasurfaces},
author = {Junjie Luo and Yuxuan Liu and Wei Ting Chen and Qing Wang and Qi Guo},
journal= {arXiv preprint arXiv:2604.10037},
year = {2026}
}