Vassilis Athitsos Home Page

Vassilis Athitsos
Assistant Professor
Computer Science and Engineering Department
University of Texas at Arlington
Office: Nedderman Hall 309, 416 Yates Street
Office hours, Spring 2009: MW 5:30pm-6:30pm, TuTh 3:30pm-4:30pm.
Phone: 817-272-0155

Publications - Curriculum Vitae - Contact Info - VLM Lab

Teaching

Spring 2009: CSE 4392/6367 - Computer Vision.
Fall 2009: CSE 4308/5360 - Artificial Intelligence I.
Spring 2010: CSE 4392/6367 - Computer Vision.

Research - VLM Research Lab

My main research areas are computer vision, machine learning, and data mining. At UTA, I have established the VLM research lab. A large part of my current work focuses on developing general methods for efficient and accurate similarity-based retrieval and classification, with applications in sign language recognition, content-based access in image, video and multimedia databases, and recognition of objects and shapes. Details on the various projects I've been working on are provided in my publications. Brief descriptions of some recent/ongoing projects can be found at the following links:

ASL dictionary search
The goal of this project is to develop a system that lets users search dictionaries of American Sign Language (ASL), so as to look up the meaning of unknown signs.
Nearest-neighbor retrieval and classification
The datasets we have used for this project can be downloaded from this link. Code for the BoostMap method is freely available upon request (just send me an e-mail).
Detecting shape classes of variable structure in cluttered images
Hand pose estimation
Code and data for this project can be downloaded as a zipped file, with size approximately 100MB, from this link.

Selected Recent Publications - All Publications - Publications Mirror Site

J. Alon, V. Athitsos, Q. Yuan, and S. Sclaroff. A Unified Framework for Gesture Recognition and Spatiotemporal Gesture Segmentation, accepted to PAMI, to appear.
P.Papapetrou, V. Athitsos, G. Kollios, and D. Gunopulos. Reference-Based Alignment in Large Sequence Databases, VLDB 2009.
A. Stefan, V. Athitsos, Q. Yuan, and S. Sclaroff. Reducing JointBoost-Based Multiclass Classification to Proximity Search, CVPR 2009.
Z. Wu, M. Betke, J. Wang, V. Athitsos, and S. Sclaroff. Tracking with Dynamic Hidden State Shape Models, ECCV 2008.
V. Athitsos, P. Papapetrou, M. Potamias, G. Kollios, and D. Gunopulos. Approximate Embedding-Based Subsequence Matching of Time Series, SIGMOD 2008.
V. Athitsos, M. Potamias, P. Papapetrou, and G. Kollios. Nearest Neighbor Retrieval Using Distance-Based Hashing, ICDE 2008.
J. Wang, V. Athitsos, S. Sclaroff, and M. Betke. Detecting Objects of Variable Shape Structure With Hidden State Shape Models , PAMI, March 2008.
V. Athitsos, J. Alon, S. Sclaroff, and G. Kollios. BoostMap: An Embedding Method for Efficient Nearest Neighbor Retrieval, PAMI, January 2008.
V. Athitsos, A. Stefan, Q. Yuan, and S. Sclaroff. ClassMap: Efficient Multiclass Recognition via Embeddings, ICCV 2007.
A. Barbu, V. Athitsos, B. Georgescu, S. Boehm, P. Durlak, and D. Comaniciu. Hierarchical Learning of Curves: Application to Guidewire Localization in Fluoroscopy, CVPR 2007.
V. Athitsos, M. Hadjieleftheriou, G. Kollios, and S. Sclaroff. Query-Sensitive Embeddings, TODS, June 2007.