2025/07/11 by Yuxuan Liu, Qi Guo, Liu, Yuxuan +1
Materials Science · Physics and Astronomy · #Advanced Optical Sensing Technologies #FOS: Electrical engineering #Image and Video Processing (eess.IV) #Metamaterials and Metasurfaces Applications #Random lasers and scattering media #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2507.08282
openalex publication_date 2025/07/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a metasurface camera that jointly performs high-dynamic range (HDR) and hyperspectral imaging in a snapshot. The system integrates exposure bracketing and computed tomography imaging spectrometry (CTIS) by simultaneously forming multiple spatially multiplexed projections with unique power ratios and chromatic aberrations on a photosensor. The measurements are subsequently processed through a deep reconstruction model to generate an HDR image and a hyperspectral datacube. Our simulation studies show that the proposed system achieves higher reconstruction accuracy than previous snapshot hyperspectral imaging methods on benchmark datasets. We assemble a working prototype and demonstrate snapshot reconstruction of 60 dB dynamic range and 10 nm spectral resolution from 600 nm to 700 nm on real-world scenes from a monochrome photosensor.