SHIRAI Keiichiro

Affiliation and department：
Job title： Associate Professor
Homepage URL (2)： http://wwell.cs.shinshu-u.ac.jp/~keiichi/index_j.html , http://wwell.cs.shinshu-u.ac.jp/index_j.html

Research field (2)： Information theory , Perceptual information processing

Research keywords (4)： Signal processing , Image processing , Continuous optimization , Linear algebra

Research theme for competitive and other funds (15)：

2022 - 2025 画像中のパタンノイズ分離法と周波数スペクトルを用いたパタン成分の特徴づけ法の開発
2019 - 2022 Application of Perfect-code to hashing and mathematical analysis
2018 - 2022 Development of high-efficiency calculation method for solving inverse problem and singular value decomposition for each local area in image restoration processing
2018 - 2022 Conversion of Wooden Documents Recovered from the Nara Palace and Capital and Their Historic Context into a Global Resource
2013 - 2018 Central information management and knowledge compilation for the development as a resource of wooden tablets and other excavated documentary materials

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Papers (58)：

Kosuke Ota, Keiichiro Shirai, Hidetoshi Miyao, Minoru Maruyama. Multimodal analogy-based image retrieval by improving semantic embeddings. J. of Adv. Comput. Intelli. and Intelli. Informatics (JACIII). 2022. 26. 6. 995-1005
Gou Koutaki, Sakino Ando, Keiichiro Shirai, Tsuyoshi Kishigami. ISHIGAKI retrieval system using 3D shape matching and combinatorial optimization. Int. J. of Comput. Vis. (IJCV). 2022. 130. 9. 2286-2304
Keiichiro Shirai, Kenjiro Sugimoto, Sei-ichiro Kamata. Adjoint bilateral filter and its application to optimization-based image processing. APSIPA Trans. on Signal and Info. Process. 2022. 11. 1. 1-27
Yoichi Matsubara, Keiichiro Shirai, Yuya Ito, Kiyoshi Tanaka. Pixel-wise parallel calculation for depth from focus with adaptive focus measure. Int. J. Multidim. Systems Signal Process. 2022. 33. 121-142
Keiichiro Shirai, Tatsuya Baba, Shunsuke Ono, Masahiro Okuda, Yusuke Tatesumi, Paul Perrotin. Guided Facial Skin Color Correction. Signals. 2021. 2. 3. 540-558

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MISC (19)：

白井啓一郎, 小野峻佑, 奥田正浩. Minimization of Mixed Norm for Frequency Spectrum of Images and Its Application of Pattern Noise Decomposition. 電子情報通信学会技術研究報告. 2017. 116. 463(ITS2016 42-76). 275-280
Minimization of Mixed Norm for Frequency Spectrum of Images and Its Application of Pattern Noise Decomposition. 2017. 41. 5. 275-280
栗原竜司, 小野峻佑, 白井啓一郎, 奥田正浩. 空間-波長構造テンソルに基づくハイパースペクトル画像のための正則化. 信号処理シンポジウム講演論文集(CD-ROM). 2016. 31st. ROMBUNNO.A2-2
MORITA Ryosuke, SHIRAI Keiichiro, TANAKA Yuichi. PERFORMANCE ANALYSIS OF RETARGETING PYRAMID AND ITS APPLICATIONS. IEICE technical report. Signal processing. 2015. 114. 474. 121-126
ONUKI Masaki, ONO Shunsuke, SHIRAI Keiichiro, TANAKA Yuichi. Fast image inpainting using Chebyshev polynomial approximation. IEICE technical report. Signal processing. 2015. 114. 474. 145-150

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Lectures and oral presentations (77)：

Multiplexing Display using Vector Error Propagation and Smooth Active Shutter
(ACM SIGGRAPH 2020 Emerging Technologies 2020)
ISHIGAKI Retrieval via Combinatorial Optimization
(ACM Multimedia (ACMMM) Workshop on Structuring Understand. Multimedia heritAge Contents (SUMAC) 2019)
アダマール行列を用いたクロスモーダルハッシングにおけるアンカー選択の検討
(信号処理シンポジウム 2018)
複数の色や成分を扱う画像処理における画素ごとの特異値分解の計算効率化
(信号処理シンポジウム 2018)
Color affine subspace pursuit for color artifact removal
(Int. Conf. on Acoust. Speech Signal Process. (ICASSP) 2018)

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Education (4)：

2003 - 2006 Keio university Graduate school of Science and Engineering Universal Design Engineering
2001 - 2003 Keio university Graduate school of Science and Engineering Universal Design Engineering
1997 - 2001 Keio university Faculty of Science and Engineering Electronics and Electrical Engineering
1996 - 1996 National Defense Academy of Japan Faculty of Science and Engineering

Professional career (3)：

Work history (2)：

2017/04 - Dept. Elec. And Comput. Eng., Faculty Eng., Shinshu Univ., Associate prof.
2006/11 - Dept. Comput. Sci and Eng., Faculty Eng., Shinshu Univ., Assistant prof.

Committee career (6)：

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Awards (2)：

Association Membership(s) (2)：

IEEE, signal process. soc. , IEICE, SIP(signal process.), PRMU(pattern recognit. mach. understand.)

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