Publications

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• Vangelis Metsis, Dimitrios Kosmopoulos, Vassilis Athitsos, and Fillia Makedon.
  Non-Invasive Analysis of Sleep Patterns via Multimodal Sensor Input.
  Journal of Personal and Ubiquitous Computing, accepted June 2012, to appear.
  

• Haohan Zhu, George Kollios, and Vassilis Athitsos.
  A Generic Framework for Efficient and Effective Subsequence Retrieval.
  Proceedings of the VLDB Endowment (PVLDB), accepted May 2012, to appear.
  [PDF 1.4MB]

• Alexandra Stefan, Vassilis Athitsos, and Gautam Das.
  The Move-Split-Merge Metric for Time Series.
  IEEE Transactions on Knowledge and Data Engineering (TKDE), accepted April 2012, to appear.
  [Postscript 15.2MB] [PDF 810KB]

• Zhong Zhang, Weihua Liu, Vangelis Metsis, and Vassilis Athitsos.
  A Viewpoint-Independent Statistical Method for Fall Detection.
  International Conference on Pattern Recognition (ICPR), November 2012.
  [PDF 411KB]

• Alexios Kotsifakos, Panagiotis Papapetrou, Jaakko Hollmén, Dimitrios Gunopulos, Vassilis Athitsos, and George Kollios.
  Hum-a-song: A Subsequence Matching with Gaps-Range-Tolerances Query-By-Humming System.
  International Conference on Very Large Databases (VLDB) demo paper, August 2012.
  [PDF 688KB]

• Paul Doliotis, Vassilis Athitsos, Dimitrios Kosmopoulos, and Stavros Perantonis.
  Hand Shape and 3D Pose Estimation using Depth Data from a Single Cluttered Frame.
  International Symposium on Visual Computing (ISVC), July 2012.
  [PDF 238KB]

• Isabelle Guyon, Vassilis Athitsos, Pat Jangyodsuk, Ben Hamner, and Hugo Jair Escalante.
  ChaLearn Gesture Challenge: Design and First Results.
  Workshop on Gesture Recognition and Kinect Demonstration Competition, June 2012.
  [PDF 770KB]

• Alexios Kotsifakos, Panagiotis Papapetrou, Jaakko Hollmén, Dimitrios Gunopulos, and Vassilis Athitsos.
  A Survey of Query-By-Humming Similarity Methods.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), June 2012.
  [PDF 67KB]

• Kevin Dela Rosa, Vangelis Metsis, and Vassilis Athitsos.
  Boosted Ranking Models: A Unifying Framework for Ranking Predictions.
  International Journal of Knowledge and Information Systems (KAIS), 30(3), pages 543-568, March 2012.
  [Postscript 2.8MB] [PDF 360KB]

• Panagiotis Papapetrou, Vassilis Athitsos, Michalis Potamias, George Kollios, and Dimitrios Gunopulos.
  Embedding-based Subsequence Matching in Time Series Databases.
  ACM Transactions on Database Systems (TODS), 36(3), Article 17, August 2011.
  [Postscript 6.6MB] [PDF 907KB]

• Alexios Kotsifakos, Vassilis Athitsos, Panagiotis Papapetrou, Jaakko Hollmén, and Dimitrios Gunopulos.
  Model-Based Search in Large Time Series Databases.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), May 2011.
  [Postscript 643KB] [PDF 103KB]

• Zhong Zhang, Rommel Alonzo, and Vassilis Athitsos.
  Experiments with Computer Vision Methods for Hand Detection.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), May 2011.
  [Postscript 3.3MB] [PDF 508KB]

• Paul Doliotis, Alexandra Stefan, Chris Mcmurrough, David Eckhard, and Vassilis Athitsos.
  Comparing Gesture Recognition Accuracy Using Color and Depth Information.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), May 2011.
  [Postscript 14MB] [PDF 507KB]

• Haijing Wang, Alexandra Stefan, Sajjad Moradi, Vassilis Athitsos, Carol Neidle, and Farhad Kamangar.
  A System for Large Vocabulary Sign Search.
  Workshop on Sign, Gesture and Activity (SGA), September 2010.
  [Postscript 5.0MB] [PDF 253KB]

• Vassilis Athitsos, Haijing Wang, and Alexandra Stefan.
  A Database-Based Framework for Gesture Recognition.
  Journal of Personal and Ubiquitous Computing, 14(6), pages 511-526, September 2010.
  [Postscript 33.0MB] [PDF 450KB]

• Zhong Zhang, Eric Becker, Roman Arora, and Vassilis Athitsos.
  Experiments with Computer Vision Methods for Fall Detection.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), June 2010.
  [Postscript 1.2MB] [PDF 89KB]

• Jefrey Lijffijt, Panagiotis Papapetrou, Jaakko Hollmén, and Vassilis Athitsos.
  Benchmarking Dynamic Time Warping for Music Retrieval.
  Workshop on Multimedia Event Analysis for Assistive Environments, June 2010.
  [Postscript 1.4MB] [PDF 137KB]

• Vassilis Athitsos, Carol Neidle, Stan Sclaroff, Joan Nash, Alexandra Stefan, Ashwin Thangali, Haijing Wang, and Quan Yuan.
  Large Lexicon Project: American Sign Language Video Corpus and Sign Language Indexing/Retrieval Algorithms.
  Workshop on the Representation and Processing of Sign Languages: Corpora and Sign Language Technologies (CSLT), pages 11-14, May 2010.
  [Postscript 7.5MB] [PDF 296KB]

• Jonathan Alon, Vassilis Athitsos, Quan Yuan, and Stan Sclaroff.
  A Unified Framework for Gesture Recognition and Spatiotemporal Gesture Segmentation.
  IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), 31(9), pages 1685-1699, September 2009.
  [Postscript 10.3MB] [PDF 405KB]

• Panagiotis Papapetrou, Vassilis Athitsos, George Kollios, and Dimitrios Gunopulos.
  Reference-Based Alignment in Large Sequence Databases.
  Proceedings of the VLDB Endowment (PVLDB), 2(1), pages 205-216, August 2009.
  [Postscript 218KB] [PDF 402KB]

• Haijing Wang, Alexandra Stefan, and Vassilis Athitsos.
  A Similarity Measure for Vision-Based Sign Recognition.
  Invited submission to International Conference on Universal Access in Human-Computer Interaction (UAHCI), pages 607-616, July 2009.
  [Postscript 6.6MB] [PDF 204KB]

• Alexandra Stefan, Vassilis Athitsos, Quan Yuan, and Stan Sclaroff.
  Reducing JointBoost-Based Multiclass Classification to Proximity Search.
  IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pages 589-596, June 2009.
  [Postscript 229KB] [PDF 114KB]

• Alexandra Stefan, Haijing Wang, and Vassilis Athitsos.
  Towards Automated Large Vocabulary Gesture Search.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), June 2009.
  [Postscript 23MB] [PDF 238KB]

• Panagiotis Papapetrou, Paul Doliotis, and Vassilis Athitsos.
  Towards Faster Activity Search Using Embedding-Based Subsequence Matching.
  Workshop on Multimedia Event Analysis for Assistive Environments, June 2009.
  [Postscript 931MB] [PDF 133KB]

• Paul Doliotis, George Tsekouras, Christos-Nikolaos Anagnostopoulos, and Vassilis Athitsos.
  Intelligent Modification of Colors in Digitized Paintings for Enhancing the Visual Perception of Color-blind Viewers.
  IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI), April 2009.
  [Postscript 7.1MB] [PDF 245KB]

• Zheng Wu, Margrit Betke, Jingbin Wang, Vassilis Athitsos, and Stan Sclaroff.
  Tracking with Dynamic Hidden State Shape Models.
  European Conference on Computer Vision (ECCV), pages 643-656, October 2008.
  [Postscript 18.2MB] [PDF 493KB]
  

• Michalis Potamias and Vassilis Athitsos.
  Nearest Neighbor Search Methods for Handshape Recognition.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), July 2008.
  [Postscript 10.4MB] [PDF 259KB]
  

• Alexandra Stefan, Vassilis Athitsos, Jonathan Alon, and Stan Sclaroff.
  Translation and Scale-Invariant Gesture Recognition in Complex Scenes.
  Conference on Pervasive Technologies Related to Assistive Environments (PETRA), July 2008.
  [Postscript 7.3MB] [PDF 253KB]
  

• Vassilis Athitsos, Carol Neidle, Stan Sclaroff, Joan Nash, Alexandra Stefan, Quan Yuan, and Ashwin Thangali.
  The American Sign Language Lexicon Video Dataset.
  IEEE Workshop on Computer Vision and Pattern Recognition for Human Communicative Behavior Analysis (CVPR4HB), June 2008.
  [Best paper award]
  [Postscript 30.8MB] [PDF 277KB]
  

• Vassilis Athitsos, Panagiotis Papapetrou, Michalis Potamias, George Kollios, and Dimitrios Gunopulos.
  Approximate Embedding-Based Subsequence Matching of Time Series.
  ACM International Conference on Management of Data (SIGMOD), pages 365-378, June 2008.
  [Postscript 1.5MB] [PDF 238KB]
  

• Philippe Dreuw, Carol Neidle, Vassilis Athitsos, Stan Sclaroff, and Hermann Ney.
  Benchmark Databases for Video-Based Automatic Sign Language Recognition.
  International Conference on Language Resources and Evaluation (LREC), May 2008.
  [Postscript 4.0MB] [PDF 644KB]
  

• Vassilis Athitsos, Michalis Potamias, Panagiotis Papapetrou, and George Kollios.
  Nearest Neighbor Retrieval Using Distance-Based Hashing.
  IEEE International Conference on Data Engineering (ICDE), pages 327-336, April 2008.
  [Postscript 6.0MB] [PDF 217KB]
  

• Jingbin Wang, Vassilis Athitsos, Stan Sclaroff, and Margrit Betke.
  Detecting Objects of Variable Shape Structure With Hidden State Shape Models.
  IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), 30(3), pages 477-492, March 2008.
  [Postscript 34.6MB] [PDF 2.5MB]
  

• Vassilis Athitsos, Jonathan Alon, Stan Sclaroff, and George Kollios.
  BoostMap: An Embedding Method for Efficient Nearest Neighbor Retrieval.
  IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI) , 30(1), pages 89-104, January 2008.
  [Postscript 51MB] [PDF 3.2MB] [Pre-print in PDF with color images 632KB]
  

• Vassilis Athitsos, Alexandra Stefan, Quan Yuan, and Stan Sclaroff.
  ClassMap: Efficient Multiclass Recognition via Embeddings.
  IEEE International Conference on Computer Vision (ICCV), October 2007.
  [Postscript 23MB] [PDF 669KB]
  

• Adrian Barbu, Vassilis Athitsos, Bogdan Georgescu, Stefan Boehm, Peter Durlak, and Dorin Comaniciu.
  Hierarchical Learning of Curves: Application to Guidewire Localization in Fluoroscopy.
  IEEE Conference on Computer Vision and Pattern Recognition (CVPR), June 2007.
  [Postscript 48MB] [PDF 8.7MB]
  

• Vassilis Athitsos, Marios Hadjieleftheriou, George Kollios, and Stan Sclaroff.
  Query-Sensitive Embeddings.
  ACM Transactions on Database Systems (TODS), 32(2), June 2007.
  [Postscript 17MB] [PDF 550KB]

• Vassilis Athitsos, Jingbin Wang, Stan Sclaroff, and Margrit Betke.
  Detecting Instances of Shape Classes That Exhibit Variable Structure.
  European Conference on Computer Vision (ECCV), pages 121-134, May 2006.
  [Postscript 9.4MB] [PDF 643KB]

• Vassilis Athitsos.
  Learning Embeddings for Indexing, Retrieval, and Classification, with Applications to Object and Shape Recognition in Image Databases.
  PhD Thesis, Computer Science Department, Boston University, April 2006.
  [Postscript 22MB] [PDF 1.2MB]

• Vassilis Athitsos, Jonathan Alon, Stan Sclaroff, and George Kollios.
  Learning Embeddings for Fast Approximate Nearest Neighbor Retrieval.
  Book chapter in Nearest-Neighbor Methods in Learning and Vision, Theory and Practice, pages 143-161.
  Gregory Shakhnarovich, Trevor Darrell, and Piotr Indyk (editors), MIT Press, March 2006.
  [Postscript 2.7MB] [PDF 274KB]

• Michail Vlachos, Zografoula Vagena, Philip S. Yu, and Vassilis Athitsos.
  Rotation Invariant Indexing of Shapes and Line Drawings.
  ACM Conference on Information and Knowledge Management (CIKM), pages 131-138, November 2005.
  [Postscript 10.3MB] [PDF 460KB]

• Jonathan Alon, Vassilis Athitsos, and Stan Sclaroff.
  Accurate and Efficient Gesture Spotting via Pruning and Subgesture Reasoning.
  IEEE Workshop on Human Computer Interaction, pages 189-198, October 2005.
  [Postscript 3.7MB] [PDF 269KB]

• Jonathan Alon, Vassilis Athitsos, and Stan Sclaroff.
  Online and Offline Character Recognition Using Alignment to Prototypes.
  International Conference on Document Analysis and Recognition (ICDAR), pages 839-843, August 2005.
  [Best paper award]
  [Postscript 2.7MB] [PDF 212KB]

• Stan Sclaroff, Margrit Betke, George Kollios, Jonathan Alon, Vassilis Athitsos, Rui Li, John Magee, and Tai-peng Tian.
  Tracking, Analysis, and Recognition of Human Gestures in Video.
  Invited submission to International Conference on Document Analysis and Recognition (ICDAR), pages 806-810, August 2005.
  [Postscript 12.8MB] [PDF 334KB]

• Vassilis Athitsos, Marios Hadjieleftheriou, George Kollios, and Stan Sclaroff.
  Query-Sensitive Embeddings.
  ACM International Conference on Management of Data (SIGMOD), pages 706-717, June 2005.
  [Postscript 583KB] [PDF 257KB]

• Vassilis Athitsos, Jonathan Alon, and Stan Sclaroff.
  Efficient Nearest Neighbor Classification Using a Cascade of Approximate Similarity Measures.
  IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pages 486-493, June 2005.
  [Postscript 302KB] [PDF 95KB]

• Vassilis Athitsos and Stan Sclaroff.
  Boosting Nearest Neighbor Classifiers for Multiclass Recognition.
  IEEE Workshop on Learning in Computer Vision and Pattern Recognition, June 2005.
  [Postscript 177KB] [PDF 84KB]

• Vassilis Athitsos, Jonathan Alon, Stan Sclaroff, and George Kollios.
  Filtering Methods for Similarity-Based Multimedia Retrieval.
  Seventh International Workshop of the EU Network of Excellence DELOS on Audio-Visual Content and Information Visualization in Digital Libraries (AVIVDiLib), 2005, May 2005.
  [Postscript 1.2MB] [PDF 243KB]

• Jonathan Alon, Vassilis Athitsos, Quan Yuan, and Stan Sclaroff.
  Simultaneous Localization and Recognition of Dynamic Hand Gestures.
  IEEE Motion Workshop, pages 254-260, January 2005.
  [Postscript 7.1MB] [PDF, 173KB]

• Quan Yuan, Stan Sclaroff, and Vassilis Athitsos.
  Automatic 2D Hand Tracking in Video Sequences.
  IEEE Workshop on Applications of Computer Vision, pages 250-256, January 2005.
  [Postscript 2.4MB] [PDF 677KB]

• Leonid Sigal, Stan Sclaroff, and Vassilis Athitsos.
  Skin Color-Based Video Segmentation under Time-Varying Illumination.
  IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), 26(7), pages 862-877, July 2004.
  [Postscript 65MB] [Compressed Postscript 19MB] [PDF 14.3MB]
  

• Vassilis Athitsos, Jonathan Alon, Stan Sclaroff, and George Kollios.
  BoostMap: A Method for Efficient Approximate Similarity Rankings.
  IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pages 268-275, June 2004.
  [Postscript 2.6MB] [Compressed Postscript 588KB] [PDF 229KB]
  

• Vassilis Athitsos, Jonathan Alon, Stan Sclaroff, and George Kollios.
  Learning Euclidean Embeddings for Indexing and Classification.
  Technical Report BUCS-2004-014, April 2004.
  [Postscript 2.0MB] [Compressed Postscript 397KB] [PDF 499KB]

• Vassilis Athitsos and Stan Sclaroff.
  Estimating 3D Hand Pose from a Cluttered Image.
  IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pages 432-439, June 2003.
  [Postscript 7.4MB] [Compressed Postscript 1.7MB] [PDF 594KB]
  

• Vassilis Athitsos and Stan Sclaroff.
  Database Indexing Methods for 3D Hand Pose Estimation.
  Gesture Workshop, pages 288-299, April 2003.
  [Postscript 3.7MB] [Compressed Postscript 587KB] [PDF 267KB]
  

• Vassilis Athitsos and Stan Sclaroff.
  An Appearance-Based Framework for 3D Hand Shape Classification and Camera Viewpoint Estimation.
  IEEE Conference on Automatic Face and Gesture Recognition, pages 45-52, May 2002.
  [Postscript 1.7MB] [Compressed Postscript 682KB] [PDF 549KB]
  

  Extended version (Technical Report BUCS-2001-022):
  [ Postscript 6.3MB] [ Compressed Postscript 1.3MB] [ PDF 716KB]
  

• Vassilis Athitsos and Stan Sclaroff.
  3D Hand Pose Estimation by Finding Appearance-Based Matches in a Large Database of Training Views.
  IEEE Workshop on Cues in Communication, December 2001.
  [Postscript 2.5MB] [Compressed Postscript 597KB] [ PDF 367KB]

  Extended version (Technical Report BUCS-2001-021):
  [ Postscript 4.0MB] [ Compressed Postscript 777KB] [ PDF 470KB]
  

• Romer Rosales, Vassilis Athitsos, Leonid Sigal, and Stan Sclaroff.
  3D Hand Pose Reconstruction Using Specialized Mappings.
  IEEE International Conference on Computer Vision (ICCV) , pages 378-385, July 2001.

• Carol Neidle, Stan Sclaroff, and Vassilis Athitsos.
  SignStream: A Tool for Linguistic and Computer Vision Research on Visual-Gestural Language Data.
  Behavior Research Methods, Instruments and Computers, 33(3), pages 311-320, August 2001.

• Vassilis Athitsos, Charles Frankel, and Michael J. Swain.
  Integrating Analysis of Context and Image Content.
  Book chapter in Principles of Visual Information Retrieval , Michael S. Lew (editor), Springer-Verlag, 2001

• Leonid Sigal, Stan Sclaroff, and Vassilis Athitsos.
  Estimation and Prediction of Evolving Color Distributions for Skin Segmentation Under Varying Illumination.
  IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pages 2152-2159, June 2000.

• Marco LaCascia, Stan Sclaroff, and Vassilis Athitsos.
  Fast, Reliable Head Tracking under Varying Illumination: An Approach Based on Robust Registration of Texture-Mapped 3D Model.
  IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), 22(4), pages 322-336, April 2000.

• Vassilis Athitsos, Michael J. Swain, and Charles Frankel.
  Distinguishing Photographs and Graphics on the World Wide Web.
  IEEE Workshop on Content-Based Access of Image and Video Libraries, June 1997.
  [Postscript 174KB] [Compressed Postscript 92KB] [PDF 119KB]

• Charles Frankel, Michael Swain, and Vassilis Athitsos.
  WebSeer: An Image Search Engine for the World Wide Web.
  University of Chicago Department of Computer Science Technical Report TR-96-14, August 1996.
  [ Postscript 4,408KB] [Compressed Postscript 848KB] [ PDF 521KB]