| 2020 | SIGGRAPH | Multiplexing Display using Vector Error Propagation and Smooth Active Shutter. | Gou Koutaki, Keiichiro Shirai |
| 2018 | ICASSP | Color Affine Subspace Pursuit for Color Artifact Removal. | Kazuki Yamanaka, Seisuke Kyochi, Shunsuke Ono, Keiichiro Shirai |
| 2018 | ICIP | Hadamard Coded Discrete Cross Modal Hashing. | Koichi Eto, Gou Koutaki, Keiichiro Shirai |
| 2017 | HCI | Interactive Image Search System Based on Multimodal Analogy. | Kosuke Ota, Keiichiro Shirai, Hidetoshi Miyao, Minoru Maruyama |
| 2017 | ICIP | Principal noiseless color component extraction by linear color composition with optimal coefficients. | Takuya Sugimoto, Kazuhiro Fujimori, Keiichiro Shirai, Hidetoshi Miyao, Minoru Maruyama |
| 2017 | WCNC | Data Tracking Using Frequency Offset and SIC for Physical Wireless Conversion Sensor Networks. | Takehiro Sakai, Osamu Takyu, Keiichiro Shirai, Mai Ohta, Takeo Fujii, Fumihito Sasamori, Shiro Handa |
| 2017 | WCNC | Measurement Technique for Occupancy Ratio and Transition Ratio in Cognitive Radio System. | Hayato Soya, Osamu Takyu, Keiichiro Shirai, Mai Ohta, Takeo Fujii, Fumihito Sasamori, Shiro Handa |
| 2016 | ICASSP | Vectorial total variation based on arranged structure tensor for multichannel image restoration. | Shunsuke Ono, Keiichiro Shirai, Masahiro Okuda |
| 2016 | ICASSP | Image colorization based on ADMM with fast singular value thresholding by Chebyshev polynomial approximation. | Masaki Onuki, Shunsuke Ono, Keiichiro Shirai, Yuichi Tanaka |
| 2016 | WCNC | Performance evaluation of multi-target tracking for PhyC-SN. | Minato Oriuchi, Osamu Takyu, Keiichiro Shirai, Fumihito Sasamori, Shiro Handa, Takeo Fujii, Mai Ohta |
| 2016 | WCNC | Performance evaluation of multi-target tracking for PhyC-SN. | Minato Oriuchi, Osamu Takyu, Keiichiro Shirai, Fumihito Sasamori, Shiro Handa, Takeo Fujii, Mai Ohta |
| 2015 | ICIP | Performance analysis of retargeting pyramid and its applications. | Ryosuke Morita, Keiichiro Shirai, Yuichi Tanaka |
| 2015 | ICIP | Non-local/local image filters using fast eigenvalue filtering. | Masaki Onuki, Shunsuke Ono, Keiichiro Shirai, Yuichi Tanaka |
| 2015 | ICIP | A regularization approach for bayer reconstruction in lossy image coding by inverse demosaicing. | Masao Yamagishi, Seisuke Kyochi, Keiichiro Shirai, Masahiro Okuda |
| 2014 | ICASSP | Flash/no-flash image integration using convex optimization. | Tatsuya Baba, Ryo Matsuoka, Shunsuke Ono, Keiichiro Shirai, Masahiro Okuda |
| 2014 | ICASSP | Lossless/near-lossless color image coding by inverse demosaicing. | Ryo Kuroiwa, Ryo Matsuoka, Seisuke Kyochi, Keiichiro Shirai, Masahiro Okuda |
| 2014 | ICASSP | Retargeting pyramid using direct decimation. | Ryosuke Morita, Keiichiro Shirai, Yuichi Tanaka |
| 2014 | ICASSP | FFT based solution for multivariable L2 equations using KKT system via FFT and efficient pixel-wise inverse calculation. | Keiichiro Shirai, Masahiro Okuda |
| 2014 | ICASSP | Color transform between image pair using covariance correspondences of local color distributions. | Yusuke Tatesumi, Keisuke Iwata, Keiichiro Shirai, Masahiro Okuda |
| 2013 | ICASSP | High dynamic range image acquisition using flash image. | Ryo Matsuoka, Tatsuya Baba, Masahiro Okuda, Keiichiro Shirai |
| 2013 | ICASSP | Scalable image representation using improved retargeting pyramid. | Yuichi Tanaka, Keiichiro Shirai |
| 2013 | ICDAR | An OCR System with OCRopus for Scientific Documents Containing Mathematical Formulas. | Fumihiro Furukori, Shinpei Yamazaki, T. Miyagishi, Keiichiro Shirai, Masayuki Okamoto |
| 2012 | ACCV | Local Covariance Filtering for Color Images. | Keiichiro Shirai, Masahiro Okuda, Takao Jinno, Masayuki Okamoto, Masaaki Ikehara |
| 2012 | DAS | Removal of Background Patterns and Signatures for Magnetic Ink Character Recognition of Checks. | Keiichiro Shirai, Masashi Akita, Masayuki Okamoto, Kazuya Tanikawa, Takaaki Akiyama, Tetsuji Sakaguchi |
| 2012 | ICPR | Color-line vector field and local color component decomposition for smoothing and denoising of color images. | Keiichiro Shirai, Masahiro Okuda, Masaaki Ikehara |
| 2011 | ICDAR | Embedding a Mathematical OCR Module into OCRopus. | Shinpei Yamazaki, Fumihiro Furukori, Qinzheng Zhao, Keiichiro Shirai, Masayuki Okamoto |
| 2011 | ICIP | Noiseless no-flash photo creation by color transform of flash image. | Keiichiro Shirai, Masayuki Okamoto, Masaaki Ikehara |
| 2008 | DAS | A Study for High Performance Character Extraction from Color Scene Images. | Keiichiro Shirai, Masanori Wakabayashi, Masayuki Okamoto, Hiroaki Yamamoto |