Tatsuki Ueda

Optimization of capacitively coupled Low Gain Avalanche Diode (AC-LGAD) sensors for precise time and spatial resolution

Sayuka Kita, K. Nakamura, Tatsuki Ueda, Ikumi Goya et autres

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Investigation of signal characteristics and charge sharing in AC-LGADs with laser and test beam measurements

J. Ott, S. C. Letts, A. Molnar, E. M. Ryan et autres

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First Prototype of Finely Segmented HPK AC-LGAD Detectors

K. Nakamura, Sayuka Kita, Tatsuki Ueda, K. Hara et autres

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Penumbral imaging with multi-penumbral-apertures and its heuristic reconstruction for nuclear reaction region diagnostics

Tatsuki Ueda, Shinsuke Fujioka, Shinya Nozaki, Yen‐Wei Chen et autres

Penumbral imaging with multi-penumbral-apertures and its heuristic reconstruction for nuclear reaction region diagnostics, Tatsuki Ueda, Shinsuke Fujioka, Shinya Nozaki, Yen-Wei Chen, Hiroaki Nishimura

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A uniformly redundant imaging array of penumbral apertures coupled with a heuristic reconstruction for hard x-ray and neutron imaging

Tatsuki Ueda, Shinsuke Fujioka, Shinya Nozaki, Rumiko Azuma et autres

A coded imaging and decoding (image reconstruction) scheme was developed for diagnosing a hot and dense region emitting hard x-rays and neutrons in laser-fusion plasmas. Because the imager was a uniformly redundant array of penumbral aperture (URPA) arranged in an M-matrix, URPA …

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A Heuristic Decoding Method for Coded Images of Random Uniformly Redundant Array

Shinya Nozaki, Shinsuke Fujioka, Tatsuki Ueda, Yen‐Wei Chen et autres

This paper presents a novel watermarking scheme, which is designed for cryptographic data such as keys, cipher- texts, and signatures. Such a cryptographic data is defined carefully based on its mathematical structure in order to provide correctness and security. Thus, in general, …

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Improvements of Signal-to-noise Ratio Utilizing Penumbral Imaging with M-sequences Aperture and Its Heuristic Scheme

Tatsuki Ueda, Shinsuke Fujioka, Shinya Nozaki, Yen‐Wei Chen et autres

In this paper, a palette partition based data hiding for color images is proposed. The palette used in color image quantization is partitioned into sub-palettes according to the similarity of colors. Any size of sub-palettes is permitted and a color can appear …

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27pYL-1 Proof-of-principle utilizing penumbral imaging with multi array aperture for inertial confinement fusion

Tatsuki Ueda, Shinsuke Fujioka, Shinya Nozaki, Chen Yen-Wei et autres