| 2014 | ICPRAM | Time-segmentation- and Position-free Recognition from Video of Air-drawn Gestures and Characters. | Yuki Nitsuma, Syunpei Torii, Yuichi Yaguchi, Ryuichi Oka |
| 2011 | MVA | Reconstructing 3D Land Surface from a Sequence of Aerial Images. | Shinya Mizoe, Yuichi Yaguchi, Kazuaki Takahashi, Kazuhiro Ota, Ryuichi Oka |
| 2011 | MVA | A Free-viewpoint TV System. | Yuichi Yaguchi, Takashi Matsuzaki, Yuichi Okuyama, Kazuaki Takahashi, Ryuichi Oka |
| 2010 | ICIP | Image classification based on segmentation-free object recognition. | Jun Ma, Long Zheng, Yuichi Yaguchi, Mianxiong Dong, Ryuichi Oka |
| 2009 | CAIP | 3D Object Reconstruction Using Full Pixel Matching. | Yuichi Yaguchi, Kenta Iseki, Nguyen Tien Viet, Ryuichi Oka |
| 2009 | PSIVT | Optimal Pixel Matching between Images. | Yuichi Yaguchi, Kenta Iseki, Ryuichi Oka |
| 2005 | CEC | Search in linked document space by social topology agents. | Keitaro Naruse, Ryuichi Oka |
| 2003 | ICDAR | Figure-Based Writer Verification by Matching between an Arbitrary Part of Registered Sequence and an Input Sequence Extracted from On-Line Handwritten Figures. | Hiroshi Kameya, Shunji Mori, Ryuichi Oka |
| 2002 | MVA | A Method of Writer Verification without Keyword Registration Using Feature Sequences extraction from On-line Handwrittern Sentences. | Hiroshi Kameya, Shunji Mori, Ryuichi Oka |
| 2000 | ICMI | Gestures Recognition for a Walking Person by Using a Sequence of Spatially Reduced Range Image. | Takuichi Nishimura, Shunsuke Nozaki, K. Makimura, S. Endo, Hiroaki Yabe, Ryuichi Oka |
| 2000 | ICPR | Continuous Retrieval of Video Using Segmentation-Free Query. | Nobuhiro Sekimoto, Takuichi Nishimura, Hironobu Takahashi, Ryuichi Oka |
| 2000 | SAC | Effect of Background Knowledge in a Task Model Self-organization Method. | Shigeaki Sakurai, Hironobu Takahashi, Ryuichi Oka |
| 1999 | Interspeech | Topic spotting and its description of summary from spontaneous speech. | Masayuki Nakazawa, Jianxin Zhang, Ryuichi Oka |
| 1999 | IROS | Spotting-based global positioning with nonmonotonic continuous DP for mobile robots using image sequences. | Takuichi Nishimura, Shunsuke Nozaki, Ryuichi Oka |
| 1999 | KES | Automatic model construction for a user oriented task using speech utterances. | Shigeaki Sakurai, Takashi Endo, Ryuichi Oka |
| 1998 | ACCV | Non-monotonic Continuous Dynamic Programming for Spotting Recognition of Hesitated Gestures from Time-Varying Images. | Takuichi Nishimura, Toshiharu Mukai, Ryuichi Oka |
| 1997 | Interspeech | Speech recognition module for CSCW using a microphone array. | Takashi Endo, Shigeki Nagaya, Masayuki Nakazawa, Kiyoshi Furukawa, Ryuichi Oka |
| 1997 | Interspeech | Referring in long term speech by using orientation patterns obtained from vector field of spectrum pattern. | Kiyoshi Furukawa, Masayuki Nakazawa, Takashi Endo, Ryuichi Oka |
| 1997 | IROS | Spotting recognition of gestures performed by people from a single time-varying image. | Takuichi Nishimura, Toshiro Mukai, Ryuichi Oka |
| 1996 | BMVC | A Proposal of Pattern Space Trajectory for Gesture Spotting Recognition. | Shigeki Nagaya, Susumu Seki, Ryuichi Oka |
| 1996 | ICPR | Effect of time-spatial size of motion image for localization by using the spotting method. | Takuichi Nishimura, Hiroshi Kojima, Yoshiaki Itoh, A. Held, Shunsuke Nozaki, Shigeki Nagaya, Ryuichi Oka |
| 1996 | Interspeech | A proposal for a new algorithm of reference interval-free continuous DP for real-time speech or text retrieval. | Yoshiaki Itoh, Jiro Kiyama, Hiroshi Kojima, Susumu Seki, Ryuichi Oka |
| 1996 | Interspeech | Automatic detection of topic boundaries and keywords in arbitrary speech using incremental reference interval-free continuous DP. | Jiro Kiyama, Yoshiaki Itoh, Ryuichi Oka |
| 1995 | Interspeech | Speech understanding and speech retrieval for TV news by using connected word spotting. | Yoshiaki Itoh, Jiro Kiyama, Ryuichi Oka |
| 1994 | ICASSP | Sentence spotting applied to partial sentences and unknown words. | Yoshiaki Itoh, Jiro Kiyama, Ryuichi Oka |
| 1994 | Interspeech | Sentence spotting using continuous structuring method. | Jiro Kiyama, Yoshiaki Itoh, Ryuichi Oka |
| 1993 | IJCAI | Grand Challenge AI Applications. | Hiroaki Kitano, Walther von Hahn, Lawrence Hunter, Ryuichi Oka, Benjamin W. Wah, Toshio Yokoi |
| 1993 | Interspeech | Spontaneous speech recognition by sentence spotting. | Jiro Kiyama, Yoshiaki Itoh, Ryuichi Oka |
| 1990 | ALT | A Self-Organizing Network Composed of Symbol Nodes With Location Parameter. | Ryuichi Oka |