Dr. Kei Hagiwara Profile

Dr. Kei Hagiwara

at NHK Japan Broadcasting Corp

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Publications (3)

Proceedings Article | 4 October 2023 Paper

Complex amplitude measurement with off-axis and phase-shifting methods for characterizing and evaluating metasurfaces

Teruyoshi Nobukawa, Ryo Higashida, Kei Hagiwara

Proceedings Volume 12684, 126840D (2023) https://doi.org/10.1117/12.2677796

KEYWORDS: Phase shifts, Complex amplitude, Interferometers, Spatial light modulators, Phase measurement, Metalenses

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Proceedings Article | 23 July 2022 Paper

Performance analysis of grating-assisted phase-shifting incoherent digital holography with multiple image sensors

Teruyoshi Nobukawa, Yutaro Katano, Tetsuhiko Muroi, Nobuhiro Kinoshita, Kei Hagiwara, Norihiko Ishii

Proceedings Volume 12277, 1227702 (2022) https://doi.org/10.1117/12.2617697

KEYWORDS: Image sensors, Holograms, 3D image reconstruction, Phase shifts, Image quality, Multiplexing, Digital holography, Diffraction gratings, Optical simulations, Numerical simulations

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Proceedings Article | 9 March 2022 Presentation

Real-time super-resolution imaging using coded aperture

Yutaro Katano, Teruyoshi Nobukawa, Tetsuhiko Muroi, Kei Hagiwara, Norihiko Ishii

Proceedings Volume PC12014, PC1201404 (2022) https://doi.org/10.1117/12.2608346

KEYWORDS: Super resolution, Real time imaging, Image sensors, Coded apertures, Coded aperture imaging, Image resolution, Digital micromirror devices, Spatial resolution, Inverse problems, Compressed sensing

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