| 2015 | SIGGRAPH | A system to support the amateurs to take a delicious-looking picture of foods. | Takao Kakimori, Makoto Okabe, Keiji Yanai, Rikio Onai |
| 2013 | MMM | Choreographing Amateur Performers Based on Motion Transfer between Videos. | Kenta Mizui, Makoto Okabe, Rikio Onai |
| 2013 | MMM | Video Retrieval Based on User-Specified Appearance and Application to Animation Synthesis. | Makoto Okabe, Yuta Kawate, Ken Anjyo, Rikio Onai |
| 2013 | UIST | DDMixer2.5D: drag and drop to mix 2.5D video objects. | Tatsuya Kurihara, Makoto Okabe, Rikio Onai |
| 2013 | WSCG | Semi-Automatic Synthesis of Videos of Performers Appearing to Play User-Specified Music. | Tomohiro Yamamoto, Makoto Okabe, Yusuke Hijikata, Rikio Onai |
| 2012 | SIGGRAPH | Video retrieval based on user-specified deformation. | Yuta Kawate, Makoto Okabe, Rikio Onai, Hiromi Hirano, Masahiro Sanjo |
| 2012 | SIGGRAPH | Synthesis of a video of performers appearing to play user-specified band music. | Tomohiro Yamamoto, Makoto Okabe, Rikio Onai |
| 2011 | CIKM | Jasmine: a real-time local-event detection system based on geolocation information propagated to microblogs. | Kazufumi Watanabe, Masanao Ochi, Makoto Okabe, Rikio Onai |
| 2011 | SIGIR | Rating prediction using feature words extracted from customer reviews. | Masanao Ochi, Makoto Okabe, Rikio Onai |
| 2011 | SiggraphA | Choreographing amateur performers using video examples. | Kenta Mizui, Makoto Okabe, Rikio Onai |
| 2009 | ICDM | A New Minimally Supervised Learning Method for Semantic Term Classification - Experimental Results on Classifying Ratable Aspects Discussed in Customer Reviews. | Thao Pham Thanh Nguyen, Takahiro Hayashi, Rikio Onai, Yuhei Nishioka, Takamasa Takenaka, Masaya Mori |
| 2008 | AINA | Retrieval of Personal Web Documents by Extracting Subjective Expressions. | Takahiro Hayashi, Koji Abe, Rikio Onai |
| 2008 | ICIP | Retrieval of 2D vector images by matching Weighted Feature Points. | Takahiro Hayashi, Taisuya Kiyono, Koji Abe, Rikio Onai |
| 2004 | KES | Retrieval of Product Reputations from the WWW | Takahiro Hayashi, Yosuke Kinosita, Rikio Onai |