| 2017 | ICDAR | Technologies and Improvements of Image Search Service for Handwritten Character Patterns on Japanese Historical Documents. | Akihito Kitadai, Miyuki Inoue, Yuichi Takata, Guohua Fang, Hajime Baba, Akihiro Watanabe, Satoshi Inoue |
| 2013 | ICDAR | Character Shape Restoration of Binarized Historical Documents by Smoothing via Geodesic Morphology. | K. Shirai, Y. Endo, Akihito Kitadai, Satoshi Inoue, N. Kurushima, Hajime Baba, Akihiro Watanabe, Masaki Nakagawa |
| 2012 | DAS | Similarity Evaluation and Shape Feature Extraction for Character Pattern Retrieval to Support Reading Historical Documents. | Akihito Kitadai, Masaki Nakagawa, Hajime Baba, Akihiro Watanabe |
| 2010 | ICFHR | Techniques to Enhance Images for Mokkan Interpretation. | Jun Takakura, Akihito Kitadai, Masaki Nakagawa, Hajime Baba, Akihiro Watanabe |
| 2008 | DAS | Document Image Retrieval to Support Reading Mokkans. | Akihito Kitadai, Jun Takakura, Masatoshi Ishikawa, Masaki Nakagawa, Hajime Baba, Akihiro Watanabe |
| 2006 | ICPR | Pen-Coordinate Information Modeling by SCPR-based HMM for On-line Japanese Handwriting Recognition. | Junko Tokuno, Yiping Yang, Gleidson Pegoretti da Silva, Akihito Kitadai, Masaki Nakagawa |
| 2005 | ICDAR | Support System for Archeologists to Read Scripts on Mokkans. | Akihito Kitadai, Kei Saito, Daisuke Hachiya, Masaki Nakagawa |
| 2004 | ICFHR | A search method for on-line handwritten text employing writing-box-free handwriting recognition. | Hideto Oda, Akihito Kitadai, Motoki Onuma, Masaki Nakagawa |
| 2002 | ICFHR | A learning algorithm for structured character pattern representation used in online recognition of handwritten Japanese characters. | Akihito Kitadai, Masaki Nakagawa |