2024-09-04 ペンシルベニア州立大学(PennState)
＜関連情報＞
- https://www.psu.edu/news/engineering/story/seeing-butterfly-optical-invention-enhances-camera-capabilities/
- https://www.science.org/doi/10.1126/sciadv.adp5192
エンコーディングメタサーフェスによるリアルタイム機械学習強化ハイパースペクトロ偏光イメージング Real-time machine learning–enhanced hyperspectro-polarimetric imaging via an encoding metasurface
Lidan Zhang, Chen Zhou, Bofeng Liu, Yimin Ding, […], and Xingjie Ni
Science Advances Published:4 Sep 2024
DOI:https://doi.org/10.1126/sciadv.adp5192
Abstract
Light fields carry a wealth of information, including intensity, spectrum, and polarization. However, standard cameras capture only the intensity, disregarding other valuable information. While hyperspectral and polarimetric imaging systems capture spectral and polarization information, respectively, in addition to intensity, they are often bulky, slow, and costly. Here, we have developed an encoding metasurface paired with a neural network enabling a normal camera to acquire hyperspectro-polarimetric images from a single snapshot. Our experimental results demonstrate that this metasurface-enhanced camera can accurately resolve full-Stokes polarization across a broad spectral range (700 to 1150 nanometer) from a single snapshot, achieving a spectral sensitivity as high as 0.23 nanometer. In addition, our system captures full-Stokes hyperspectro-polarimetric video in real time at a rate of 28 frames per second, primarily limited by the camera’s readout rate. Our encoding metasurface offers a compact, fast, and cost-effective solution for multidimensional imaging that effectively uses information within light fields.
