| 2007 | IGARSS | Towards high accuracy road maps generation from massive GPS Traces data. | Tao Guo, Kazuaki Iwamura, Masashi Koga |
| 2005 | ICDAR | Camera-based Kanji OCR for Mobile-phones: Practical Issues. | Masashi Koga, Ryuji Mine, Tatsuya Kameyama, Toshikazu Takahashi, Masahiro Yamazaki, Teruyuki Yamaguchi |
| 2005 | ICDAR | Gabor Feature Extraction for Character Recognition: Comparison with Gradient Feature. | Cheng-Lin Liu, Masashi Koga, Hiromichi Fujisawa |
| 2005 | ICDAR | Building Compact Classifier for Large Character Set Recognition Using Discriminative Feature Extraction. | Cheng-Lin Liu, Ryuji Mine, Masashi Koga |
| 2004 | ICPR | Address-Block Extraction by Bayesian Rule. | Tatsuhiko Kagehiro, Masashi Koga, Hiroshi Sako, Hiromichi Fujisawa |
| 2001 | ICDAR | A Recognition Method of Machine-Printed Monetary Amounts Based on the Two-Dimensional Segmentation and the Bottom-up Parsing. | Masashi Koga, Ryuji Mine, Hiroshi Sako, Hiromichi Fujisawa |
| 2001 | ICDAR | Lexicon-Driven Handwritten Character String Recognition for Japanese Address Reading. | Cheng-Lin Liu, Masashi Koga, Hiromichi Fujisawa |
| 2000 | ICMI | Aspect Ratio Adaptive Normalization for Handwritten Character Recognition. | Cheng-Lin Liu, Masashi Koga, Hiroshi Sako, Hiromichi Fujisawa |
| 2000 | MVA | A Recognition Method for Skewed Four-State Bar Codes by Using Raster-Scanned Binary Images and Connected Components. | Yoshihiro Shima, Katsumi Marukawa, Hiroshi Shinjo, Kazuki Nakashima, Masashi Koga, Tatsuhiko Kagehiro |
| 1999 | ICDAR | A Recognition Method for Touching Japanese Handwritten Characters. | Hisashi Ikeda, Yukio Ogawa, Masashi Koga, Hiromitsu Nishimura, Hiroshi Sako, Hiromichi Fujisawa |
| 1998 | DAS | Lexical Search Approach for Character-String Recognition. | Masashi Koga, Ryuji Mine, Hiroshi Sako, Hiromichi Fujisawa |
| 1998 | ICPR | Segmentation of Japanese handwritten characters using peripheral feature analysis. | Masashi Koga, Tatsuhiko Kagehiro, Hiroshi Sako, Hiromichi Fujisawa |
| 1998 | MVA | Segmentation of Handwritten Kanji Numerals Integrating Peripheral Information by Bayesian Rule. | Tatsuhiko Kagehiro, Masashi Koga, Hiroshi Sako, Hiromichi Fujisawa |
| 1997 | ICDAR | A method for connecting disappeared junction patterns on frame lines in form documents. | Hiroshi Shinjo, Kazuki Nakashima, Masashi Koga, Katsumi Marukawa, Yoshihiro Shima, Eiichi Hadano |
| 1996 | MVA | A Restoration Method for Broken Handwritten Line-figures with Connecting Terminal Points. | Kazuki Nakashima, Masashi Koga, Katsumi Marukawa, Yoshihiro Shima |
| 1996 | MVA | A Connecting Method for Disappeared Corner Patterns in Form Documents. | Hiroshi Shinjo, Kazuki Nakashima, Masashi Koga, Katsumi Marukawa, Yoshihiro Shima, Eiichi Hadano |
| 1994 | MVA | Recognition of Numeric Strings with Notation Rules Using String Checking. | Katsumi Marukawa, Kazutoshi Takakura, Taro Hayashi, Masashi Koga, Yoshihiro Shima |
| 1994 | MVA | A High-Speed Character Contour-Fill Method Using an Edge-Flag List. | Kazuki Nakashima, Masashi Koga, Katsumi Marukawa, Yoshihiro Shima, Yasuaki Nakano |
| 1993 | ICDAR | A post-processing method for handwritten Kanji name recognition using Furigana information. | Katsumi Marukawa, Masashi Koga, Yoshihiro Shima, Hiromichi Fujisawa |
| 1993 | ICDAR | A contour fill method for alpha-numeric character image generation. | Kazuki Nakashima, Masashi Koga, Katsumi Marukawa, Yoshihiro Shima, Yasuaki Nakano |
| 1992 | MVA | An Extraction Method of Search Indexes for Graph Image Retrieval. | Masashi Koga, Tatsuya Murakami, Yoshihiro Shima, Hiromichi Fujisawa |
| 1992 | MVA | Error Correction for Recognition of Handwritten Kanji Names Using a Name Knowledge Base. | Katsumi Marukawa, Masashi Koga, Yoshihiro Shima, Hiromichi Fujisawa |
| 1990 | ICPR | A high-speed algorithm for propagation-type labeling based on block sorting of runs in binary images. | Yoshihiro Shima, Tatsuya Murakami, Masashi Koga, Hiroshi Yashiro, Hiromichi Fujisawa |
| 1990 | MVA | A High Speed Word Matching Algorithm for Handwritten Chinese Character Recognition. | Katsumi Marukawa, Masashi Koga, Yoshihiro Shima, Hiromichi Fujisawa |