| 2007 | ICDAR | Text and Layout Information Extraction from Document Files of Various Formats Based on the Analysis of Page Description Language. | Takashi Hirano, Yuichi Okano, Yasuhiro Okada, Fumio Yoda |
| 2007 | ISVC | Integrating Vision and Language: Semantic Description of Traffic Events from Image Sequences. | Takashi Hirano, Shogo Yoneyama, Yasuhiro Okada, Yukio Kosugi |
| 2005 | ICDAR | Push-Style Guidance System for Technical Document Writing. | Koichi Tanigaki, Takashi Hirano, Yasuhiro Okada |
| 2001 | ICDAR | Field Extraction Method from Existing Forms Transmitted by Facsimile. | Takashi Hirano, Yasuhiro Okada, Fumio Yoda |
| 2001 | ICDAR | A Document Retrieval Method from Handwritten Characters Based on OCR and Character Shape Information. | Taizo Kameshiro, Takashi Hirano, Yasuhiro Okada, Fumio Yoda |
| 1999 | ICDAR | A Document Image Retrieval Method Tolerating Recognition and Segmentation Errors of OCR using Shape-Feature and Multiple Candidates. | Taizo Kameshiro, Takashi Hirano, Yasuhiro Okada, Fumio Yoda |
| 1997 | ICDAR | Structural Character Recognition Using Simulated Annealing. | Takashi Hirano, Yasuhiro Okada, Fumio Yoda |
| 1992 | IROS | Motion Estimation Of Unknown Object For Space Robotic Missions. | Yasuhiro Masutani, Yasuhiro Okada, Fumio Miyazaki |