Snapshot On-chip HDR ROIC Architectures

Fernandez-Cull, Christy; Zhao, Hang; Shi, Boxin; Tyrrell, Brian; Lin, Joseph; Raskar, Ramesh

doi:10.1364/cosi.2015.cm3e.3

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B Single-shot Hdr Reconstruction1

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2022

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“…The third group of methods rely on specialized cameras or filters, such as neuromorphic camera [35], saturation self-reset camera [36], modulo camera [37], snapshot camera [38]- [40], polarization camera [12] or cross-screen filter [41] to recover HDR images. Alternatively, some works presented end-to-end joint learning of optics and HDR reconstruction.…”

Section: B Single-shot Hdr Reconstructionmentioning

confidence: 99%

Deep Polarimetric HDR Reconstruction

Ting¹,

Shakeri²,

Zhang³

2022

Preprint

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This paper proposes a novel learning based highdynamic-range (HDR) reconstruction method using a polarization camera. We utilize a previous observation that polarization filters with different orientations can attenuate natural light differently, and we treat the multiple images acquired by the polarization camera as a set acquired under different exposure times, to introduce the development of solutions for the HDR reconstruction problem. We propose a deep HDR reconstruction framework with a feature masking mechanism that uses polarimetric cues available from the polarization camera, called Deep Polarimetric HDR Reconstruction (DPHR). The proposed DPHR obtains polarimetric information to propagate valid features through the network more effectively to regress the missing pixels. We demonstrate through both qualitative and quantitative evaluations that the proposed DPHR performs favorably than state-of-the-art HDR reconstruction algorithms.

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