Michael S. Ryoo

Human Activity Recognition

	Human activity prediction M. S. Ryoo, "Human Activity Prediction: Early Recognition of Ongoing Activities from Streaming Videos", International Conference on Computer Vision (ICCV), Barcelona, Spain, November 2011 (to appear).
	Single-example activity recognition using active video composition M. S. Ryoo and W. Yu, "One Video is Sufficient? Human Activity Recognition Using Active Video Composition", IEEE Workshop on Motion and Video Computing (WACV/WMVC), January 2011. pdf example composed videos
	Incremental learning of novel activity categories M. S. Ryoo, J. Joung, S. Choi, and W. Yu, "Incremental Learning of Novel Activity Categories from Videos", 16th International Conference on Virtual Systems and Multimedia (VSMM), Seoul, Korea, October 2010 (invited). pdf
	Spatio-temporal relationship match M. S. Ryoo and J. K Aggarwal, "Spatio-Temporal Relationship Match: Video Structure Comparison for Recognition of Complex Human Activities", International Conference on Computer Vision (ICCV), Kyoto, Japan, October 2009. pdf
group stealing                group arresting  click to play                                      click to play	Group activity recognition M. S. Ryoo and J. K. Aggarwal, "Stochastic Representation and Recognition of High-level Group Activities", International Journal of Computer Vision (IJCV), 93(2):183-200, June 2011. link M. S. Ryoo and J. K Aggarwal, "Stochastic Representation and Recognition of High-level Group Activities: Describing Structural Uncertainties in Human Activities", 1st International Workshop on Stochastic Image Grammars (SIG), in Proceedings of IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Miami, FL, June 2009 (invited). extended abstract. M. S. Ryoo and J. K. Aggarwal, "Recognition of High-level Group Activities Based on Activities of Individual Members", Proceedings of IEEE Workshop on Motion and Video Computing (WMVC), Copper Mountain, CO, January 2008. pdf M. S. Ryoo, "Semantic Representation and Recognition of Human Activities", Ph. D. Thesis, Track of Computer Engineering, Department of ECE, The University of Texas at Austin, August 2008 (nominated for the Outstanding Dissertation Award).
	Stochastic activity recognition M. S. Ryoo and J. K Aggarwal, "Human Activities: Handling Uncertainties Using Fuzzy Time Intervals", Proceedings of 19th International Conference on Pattern Recognition (ICPR), Tampa, FL, December 2008. pdf
	Human-object interaction recognition M. S. Ryoo and J. K. Aggarwal, "Hierarchical Recognition of Human Activities Interacting with Objects", 2nd International Workshop on Semantic Learning Applications in Multimedia (SLAM), in Proceedings of IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Minneapolis, MN, June 2007. pdf
	Human-human interaction recognition M. S. Ryoo and J. K Aggarwal, "Semantic Representation and Recognition of Continued and Recursive Human Activities", International Journal of Computer Vision (IJCV), 82(1):1-24, April 2009. link M. S. Ryoo and J. K. Aggarwal, "Semantic Understanding of Continued and Recursive Human Activities", Proceedings of 18th International Conference on Pattern Recognition (ICPR), Vol. 1, pp. 379~382, Hong Kong, August 2006. pdf M. S. Ryoo and J. K. Aggarwal, "Recognition of Composite Human Activities through Context-Free Grammar based Representation", Proceedings of IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Vol. 2, pp. 1709-1719, New York, NY, June 2006. pdf M. S. Ryoo, "Semantic Understanding of Continued and Recursive Activities using Context-Free Grammar", M. S. Thesis, Track of Computer Engineering, Department of ECE, The University of Texas at Austin, August 2006 (nominated for the Outstanding Thesis Award).

Tracking

Observe-and-explain M. S. Ryoo and J. K. Aggarwal, "Observe-and-Explain: A New Approach for Multiple Hypotheses Tracking of Humans and Objects", IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Anchorage, AK, June 2008. pdf i-Lids_example_video CAVIAR_example_video

Computer Vision Applications

	Personal driving diary: Life-logging of driving activities M. S. Ryoo, J. Lee, J. Joung, S. Choi, and W. Yu, "Personal Driving Diary: Constructing a Video Archive of Everyday Driving Events", IEEE Workshop on Motion and Video Computing (WACV/WMVC), January 2011. pdf video
	Human-computer interaction (HCI): Intelligent workspace M. S. Ryoo, K. Grauman, and J. K. Aggarwal, "A Task-Driven Intelligent Workspace System to Provide Guidance Feedback", Computer Vision and Image Understanding (CVIU), 114(5):520-534, May 2010. link M. S. Ryoo and J. K. Aggarwal, "Robust Human-Computer Interaction System Guiding a User by Providing Feedback", Proceedings of International Joint Conference on Artificial Intelligence (IJCAI), Hyderabad, India, January 2007. pdf
	Human-vehicle interaction recognition M. S. Ryoo+, J. T. Lee+, and J. K Aggarwal, "Video Scene Analysis of Interactions between Humans and Vehicles Using Event Context", ACM International Conference on Image and Video Retrieval (CIVR), Xian, China, July 2010 (invited) (+indicates equal contribution). pdf J. T. Lee, M. S. Ryoo, and J. K Aggarwal, "View Independent Recognition of Human-vehicle Interactions using 3-D Models", IEEE Workshop on Motion and Video Computing (WMVC), Snowbird, Utah, December 2009. pdf
	Abandoned baggage detection M. Bhargava, C.-C. Chen, M. S. Ryoo, and J. K. Aggarwal, "Detection of Object Abandonment Using Temporal Logic," Machine Vision and Applications (MVA), 20(5):271-281, June 2009. link M. Bhargava, C.-C. Chen, M. S. Ryoo, and J. K. Aggarwal, "Detection of Abandoned Objects in Crowded Environments", Proceedings of IEEE International Conference on Advanced Video and Signal based Surveillance (AVSS), London, UK, September 2007. pdf
	Illegally parked car detection J. T. Lee, M. S. Ryoo, M. Riley, and J. K. Aggarwal, "Real-Time Illegal Parking Detection in Outdoor Environments Using 1-D Transformation", IEEE Transactions on Circuits and Systems for Video Technology (T-CSVT), 19(7):1014-1024, July 2009. link J. T. Lee, M. S. Ryoo, M. Riley, and J. K. Aggarwal, "Real-time Detection of Illegally Parked Vehicles using 1-D Transformation", Proceedings of IEEE International Conference on Advanced Video and Signal based Surveillance (AVSS), London, UK, September 2007. pdf

Human Activity Recognition - Others

Survey paper and tutorials J. K. Aggarwal and M. S. Ryoo, "Human Activity Analysis: A Review", ACM Computing Surveys (CSUR), 43(3), April 2011. link J. K. Aggarwal, M. S. Ryoo, and K. Kitani, "Frontiers of Human Activity Analysis", Tutorials of IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Colorado Springs, CO, June 2011. M. S. Ryoo, and K. Kitani, "Understanding Videos - Human Activity Analysis", Tutorials of 11th Pacific Rim International Conference on Artificial Intelligent (PRICAI), Daegu, Korea, August 2010. M. S. Ryoo, "An Introduction to Description-Based Human Activity Recognition", Tutorials of 21st Workshop on Image Processing and Image Understanding (IPIU), Jeju, Korea, February 2009.

ICPR contest on human activity recognition 2010: SDHA 2010 M. S. Ryoo, C.-C. Chen, J. K. Aggarwal, and A. Roy-Chowdhury, "An Overview of Contest on Semantic Description of Human Activities (SDHA) 2010", International Conference on Pattern Recognition (ICPR) Contests, August 2010. pdf slides website

Other Topics

Robotics and affective computing H. S. Yang, Y. Seo, M. S. Ryoo, and H. Jung, "Affective Communication System with Emotional Memories for Multimodal Interaction with Humanoids", Proceedings of the 11th international conference on virtual systems and multimedia (VSMM), October 2005. M. S. Ryoo, Y. Seo, H. Jung, and H. S. Yang, "Affective Dialogue Communication System with Emotional Memories for Humanoid Robots", Proceedings of the First International Conference on Affective Computing and Intelligent Interaction (ACII), LNCS 3784, pp. 819-827, October 2005. pdf D. Pardoe, M. Ryoo, and R. Miikkulainen, "Evolving Neural Network Ensembles for Control Problems", Proceedings of the Genetic and Evolutionary Computation Conference (GECCO), June 2005. link H. Jung, Y. Seo, M. S. Ryoo, and H. S. Yang, "Affective Communication System with Multimodality for Humanoid Robot AMI", IEEE-RAS/RSJ International Conference on Humanoid Robots (Humanoids), November 2004. link M. S. Ryoo, "Affective Dialogue Communication System with Emotional Memories for Humanoid Robots", B. S. Thesis, Division of Computer Science, Department of EECS, KAIST, June 2004.

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