Ryuichi Oka

Publication Activity (10 Years)

Years Active: 1988-2019
Publications (10 Years): 3

Top Topics

Magnetic Resonance Imaging

Printed Characters

Dynamic Programming

Gesture Recognition

Top Venues

J. Adv. Comput. Intell. Intell. Informatics

Publications

Aki Nakamura, Yuichi Okuyama, Ryuichi Oka
Real-Time Implementation of Time-Space Continuous Dynamic Programming for Air-Drawn Character Recognition Using GPUs. MCSoC (2019)
Ryuichi Oka
Keynote speech I: Big data, non-big data, and algorithms for recognizing the real world data. iCAST (2017)
Yuki Niitsuma, Syunpei Torii, Yuichi Yaguchi, Ryuichi Oka
Time-segmentation and position-free recognition of air-drawn gestures and characters in videos. Multim. Tools Appl. 75 (19) (2016)
Tuan D. Pham, Taishi Abe, Ryuichi Oka, Yung-Fu Chen
Measures of Morphological Complexity of Gray Matter on Magnetic Resonance Imaging for Control Age Grouping. Entropy 17 (12) (2015)
Yuki Nitsuma, Syunpei Torii, Yuichi Yaguchi, Ryuichi Oka
Time-segmentation- and Position-free Recognition from Video of Air-drawn Gestures and Characters. ICPRAM (2014)
Naoki Terunuma, Yuichi Yaguchi, Yutaka Watanobe, Ryuichi Oka
Information flow clustering via similarity of a propagation tree. SCIS&ISIS (2014)
Jun Ma, Long Zheng, Mianxiong Dong, Xiangjian He, Minyi Guo, Yuichi Yaguchi, Ryuichi Oka
A segmentation-free method for image classification based on pixel-wise matching. J. Comput. Syst. Sci. 79 (2) (2013)
Keigo Amma, Yuichi Yaguchi, Yuki Niitsuma, Takashi Matsuzaki, Ryuichi Oka
A comparative study of gesture recognition between RGB and HSV colors using time-space continuous dynamic programming. iCAST/UMEDIA (2013)
Yuichi Yaguchi, Ryuichi Oka
Spherical Visualization of Image Data with Clustering. J. Adv. Comput. Intell. Intell. Informatics 17 (4) (2013)
Shunsuke Wada, Yuichi Yaguchi, Ryo Ogata, Yutaka Watanobe, Keitaro Naruse, Ryuichi Oka
Associated Keyword analysis for temporal data with spatial visualization. iCAST/UMEDIA (2013)
Junko Tazawa, Yuichi Okuyama, Yuichi Yaguchi, Toshiaki Miyazaki, Ryuichi Oka, Kenichi Kuroda
Hardware Implementation of Accumulated Value Calculation for Two-Dimensional Continuous Dynamic Programming. MCSoC (2012)
Yuichi Yaguchi, Ryuichi Oka
Spherical visualization of image data with clustering. iCAST (2012)
Takeshi Sasaki, Yuichi Yaguchi, Yutaka Watanobe, Ryuichi Oka
Extracting a spatial ontology from a large Flickr tag dataset. iCAST (2012)
Shinya Mizoe, Yuichi Yaguchi, Kazuaki Takahashi, Kazuhiro Ota, Ryuichi Oka
Reconstructing 3D Land Surface from a Sequence of Aerial Images. MVA (2011)
Yuichi Yaguchi, Takashi Matsuzaki, Yuichi Okuyama, Kazuaki Takahashi, Ryuichi Oka
A Free-viewpoint TV System. MVA (2011)
Hisato Aota, Kazuhiro Ota, Yuichi Yaguchi, Ryuichi Oka
Extracting Objects by Clustering of Full Pixel Trajectories. SIGMAP (2010)
Yuichi Yaguchi, Kenta Iseki, Ryuichi Oka
Full Pixel Matching between Images for Non-linear Registration of Objects. IPSJ Trans. Comput. Vis. Appl. 2 (2010)
Jun Ma, Long Zheng, Yuichi Yaguchi, Mianxiong Dong, Ryuichi Oka
Image classification based on segmentation-free object recognition. ICIP (2010)
Hisato Aota, Kazuhiro Ota, Yuichi Yaguchi, Ryuichi Oka
Deformable Multi-object Tracking Using Full Pixel Matching of Image. ICETE (Selected Papers) (2010)
Jun Ma, Long Zheng, Yuichi Yaguchi, Mianxiong Dong, Ryuichi Oka
Object Recognition using Full Pixel Matching. CIT (2010)
Takashi Wagatsuma, Yuichi Yaguchi, Ryuichi Oka
Cross-Media Data Mining Using Associated Keyword Space. CIT (2) (2009)
Yuichi Yaguchi, Kenta Iseki, Ryuichi Oka
Optimal Pixel Matching between Images. PSIVT (2009)
Hisato Aota, Yuichi Yaguchi, Kenta Iseki, Ryuichi Oka
Extracting Motion Features of Objects Based on Full Pixel Matching. CIT (2) (2009)
Jun Ma, Kenta Iseki, Yuichi Yaguchi, Ryuichi Oka
Segmentation-Free Object Recognition Using Full Pixel Matching. CIT (2) (2009)
Yuichi Yaguchi, Yusuke Sakai, Keisuke Yoshida, Ryuichi Oka
Web Video Data Clustering and Recognition Using Histograms of Phoneme Symbols. CIT (2) (2009)
Yuichi Yaguchi, Kenta Iseki, Nguyen Tien Viet, Ryuichi Oka
3D Object Reconstruction Using Full Pixel Matching. CAIP (2009)
Hisato Aota, Yuichi Yaguchi, Ryuichi Oka
Feature detection of electrical feeder lines with galloping motion. CIT (2008)
Yuichi Yaguchi, Keitaro Naruse, Ryuichi Oka
Fast spotter: An approximation algorithm for continuous dynamic programming. CIT (2008)
Takahiro Machino, Shin-ya Iwazaki, Yuichi Okuyama, Junji Kitamichi, Kenichi Kuroda, Ryuichi Oka
Optimizing Two-Dimensional Continuous Dynamic Programming for Cell Broadband Engine Processors. FCST (2008)
Hiroki Hashiguchi, Takuichi Nishimura, Jianxin Zhang, Junko Takita, Ryuichi Oka
Music signal spotting retrieval by a humming query using model driven path continuous dynamic program. Systems and Computers in Japan 38 (10) (2007)
Yuichi Yaguchi, Yoshiyuki Watanabe, Keitaro Naruse, Ryuichi Oka
Speech and Song Search on the Web: System Design and Implementation. CIT (2007)
Yuichi Yaguchi, Hiroshi Ohnishi, Kenta Yamaki, Keitaro Naruse, Ryuichi Oka, Steven D. Tripp
Word Space: A New Approach to Describe Word Meanings. CIT (2006)
Hiroshi Kameya, Shunji Mori, Ryuichi Oka
A segmentation-free biometric writer verification method based on continuous dynamic programming. Pattern Recognit. Lett. 27 (6) (2006)
Yuichi Yaguchi, Hiroshi Ohnishi, Satoshi Mori, Keitaro Naruse, Ryuichi Oka, Hironobu Takahashi
A Mining Method for LinkedWeb Pages Using Associated Keyword Space. SAINT (2006)
Keitaro Naruse, Ryuichi Oka
Search in linked document space by social topology agents. Congress on Evolutionary Computation (2005)
Yuichi Yaguchi, Ryuichi Oka
Song Wave Retrieval Based on Frame-Wise Phoneme Recognition. AIRS (2005)
Yuya Iwasa, Ryuichi Oka
Spotting Recognition and Tracking of a Deformable Object in a Time-Varying Image Using Two-Dimensional Continuous Dynamic Programming. CIT (2004)
Hiroshi Kameya, Shunji Mori, Ryuichi Oka
Figure-Based Writer Verification by Matching between an Arbitrary Part of Registered Sequence and an Input Sequence Extracted from On-Line Handwritten Figures. ICDAR (2003)
Masataka Goto, Hiroki Hashiguchi, Takuichi Nishimura, Ryuichi Oka
RWC Music Database: Music genre database and musical instrument sound database. ISMIR (2003)
Masataka Goto, Hiroki Hashiguchi, Takuichi Nishimura, Ryuichi Oka
RWC Music Database: Popular, Classical and Jazz Music Databases. ISMIR (2002)
Hiroshi Kameya, Shunji Mori, Ryuichi Oka
A Method of Writer Verification without Keyword Registration Using Feature Sequences extraction from On-line Handwrittern Sentences. MVA (2002)
Takuichi Nishimura, Ryuichi Oka
Retrieval of Similar Time-Series Patterns for Chance Discovery. JSAI Workshops (2001)
Shigeaki Sakurai, Hironobu Takahashi, Ryuichi Oka
Effect of Background Knowledge in a Task Model Self-organization Method. SAC (1) (2000)
Takuichi Nishimura, Shunsuke Nozaki, K. Makimura, S. Endo, Hiroaki Yabe, Ryuichi Oka
Gestures Recognition for a Walking Person by Using a Sequence of Spatially Reduced Range Image. ICMI (2000)
Takuichi Nishimura, Hiroaki Yabe, Ryuichi Oka
A Method of Model Improvement for Spotting Recognition of Gestures Using an Image Sequence. New Gener. Comput. 18 (2) (2000)
Yasuhide Mori, Hironobu Takahashi, Ryuichi Oka
Automatic word assignment to images based on dividing image and vector quantization. RIAO (2000)
Takuichi Nishimura, Toshiro Mukai, Shunsuke Nozaki, Ryuichi Oka
Adaptation to gesture performers by an on-line teaching system for spotting recognition of gestures from a time-varying image. Systems and Computers in Japan 31 (1) (2000)
Nobuhiro Sekimoto, Takuichi Nishimura, Hironobu Takahashi, Ryuichi Oka
Continuous Retrieval of Video Using Segmentation-Free Query. ICPR (2000)
Shigeaki Sakurai, Takashi Endo, Ryuichi Oka
Automatic model construction for a user oriented task using speech utterances. KES (1999)
Takuichi Nishimura, Shunsuke Nozaki, Ryuichi Oka
Spotting-based global positioning with nonmonotonic continuous DP for mobile robots using image sequences. IROS (1999)
Masayuki Nakazawa, Jianxin Zhang, Ryuichi Oka
Topic spotting and its description of summary from spontaneous speech. EUROSPEECH (1999)
Ryuichi Oka
Spotting Method for Classification of Real World Data. Comput. J. 41 (8) (1998)
Takuichi Nishimura, Kiyoshi Furukawa, Toshiro Mukai, Ryuichi Oka
Weight-decreasing reference interval-free continuous DP for retrieval of time-sequence patterns. Systems and Computers in Japan 29 (10) (1998)
Takuichi Nishimura, Toshiharu Mukai, Ryuichi Oka
Non-monotonic Continuous Dynamic Programming for Spotting Recognition of Hesitated Gestures from Time-Varying Images. ACCV (2) (1998)
Takashi Endo, Jianxin Zhang, Masayuki Nakazawa, Ryuichi Oka
Mutual Spotting Retrieval between Speech and Video Image Using Self-Organized Network Databases. AMCP (1998)
Takashi Endo, Shigeki Nagaya, Masayuki Nakazawa, Kiyoshi Furukawa, Ryuichi Oka
Speech recognition module for CSCW using a microphone array. EUROSPEECH (1997)
Hiroshi Kojima, Yoshiaki Itoh, Ryuichi Oka
Mobile robot location identification system using reference interval-free continuous dynamic programming applied to time-varying images. Systems and Computers in Japan 28 (11) (1997)
Takuichi Nishimura, Toshiro Mukai, Ryuichi Oka
Spotting recognition of gestures performed by people from a single time-varying image. IROS (1997)
Kiyoshi Furukawa, Masayuki Nakazawa, Takashi Endo, Ryuichi Oka
Referring in long term speech by using orientation patterns obtained from vector field of spectrum pattern. EUROSPEECH (1997)
Shigeki Nagaya, Ryuichi Oka, Susumu Seki
A Theoretical Consideration of Pattern Space Trajectory for Gesture Spotting Recognition. FG (1996)
Shigeki Nagaya, Susumu Seki, Ryuichi Oka
A Proposal of Pattern Space Trajectory for Gesture Spotting Recognition. BMVC (1996)
Takuichi Nishimura, Hiroshi Kojima, Yoshiaki Itoh, A. Held, Shunsuke Nozaki, Shigeki Nagaya, Ryuichi Oka
Effect of time-spatial size of motion image for localization by using the spotting method. ICPR (1996)
Takuichi Nishimura, Ryuichi Oka
Spotting recognition of human gestures from time-varying images. FG (1996)
Jiro Kiyama, Yoshiaki Itoh, Ryuichi Oka
Automatic detection of topic boundaries and keywords in arbitrary speech using incremental reference interval-free continuous DP. ICSLP (1996)
Yoshiaki Itoh, Jiro Kiyama, Hiroshi Kojima, Susumu Seki, Ryuichi Oka
A proposal for a new algorithm of reference interval-free continuous DP for real-time speech or text retrieval. ICSLP (1996)
Yoshiaki Itoh, Jiro Kiyama, Ryuichi Oka
Speech understanding and speech retrieval for TV news by using connected word spotting. EUROSPEECH (1995)
Ryuichi Oka
The Real World Computing Program. Artif. Intell. Rev. 8 (2-3) (1994)
Ryuichi Oka
Hierarchical Labelling for Integrating Images and Words. Artif. Intell. Rev. 8 (2-3) (1994)
Jiro Kiyama, Yoshiaki Itoh, Ryuichi Oka
Sentence spotting using continuous structuring method. ICSLP (1994)
Ryuichi Oka
Continuous speech recognition by sentence spotting applying the vector continuous dynamic programming to output of partial matching method. Systems and Computers in Japan 25 (5) (1994)
Yoshiaki Itoh, Jiro Kiyama, Ryuichi Oka
Sentence spotting applied to partial sentences and unknown words. ICASSP (1) (1994)
Hiroaki Kitano, Walther von Hahn, Lawrence Hunter, Ryuichi Oka, Benjamin W. Wah, Toshio Yokoi
Grand Challenge AI Applications. IJCAI (1993)
Jiro Kiyama, Yoshiaki Itoh, Ryuichi Oka
Spontaneous speech recognition by sentence spotting. EUROSPEECH (1993)
Ryuichi Oka
A Self-Organizing Network Composed of Symbol Nodes With Location Parameter. ALT (1990)
Ryuichi Oka
The Cellular Frame Model for Representation and Aggregation of Knowledge in Image Understanding. Systems and Computers in Japan 19 (5) (1988)