Counting People in Groups. - Duc Fehr; Ravishankar Sivalingam; Vassilios Morellas; Nikolaos Papanikolopoulos; Osama A. Lotfallah; Youngchoon Park (AVSS, 2009)

Metric learning for semi-supervised clustering of Region Covariance Descriptors. - Ravishankar Sivalingam; Vassilios Morellas; Daniel Boley; Nikolaos Papanikolopoulos (ICDSC, 2009)

Tensor Sparse Coding for Region Covariances. - Ravishankar Sivalingam; Daniel Boley; Vassilios Morellas; Nikolaos Papanikolopoulos (ECCV (4), 2010)

Dictionary learning based object detection and counting in traffic scenes. - Ravishankar Sivalingam; Guruprasad Somasundaram; Vassilios Morellas; Nikolaos Papanikolopoulos; Osama A. Lotfallah; Youngchoon Park (ICDSC, 2010)

Positive definite dictionary learning for region covariances. - Ravishankar Sivalingam; Daniel Boley; Vassilios Morellas; Nikolaos Papanikolopoulos (ICCV, 2011)

Dictionary learning for robust background modeling. - Ravishankar Sivalingam; Alden D'Souza; Michael Bazakos; Roland Miezianko (ICRA, 2011)

A dynamic sensor placement algorithm for dense sampling. - Vineet Bhatawadekar; Ravishankar Sivalingam; Nikolaos Papanikolopoulos (IROS, 2011)

Compact covariance descriptors in 3D point clouds for object recognition. - Duc Fehr; Anoop Cherian; Ravishankar Sivalingam; Sam Nickolay; Vassilios Morellas; Nikolaos Papanikolopoulos (ICRA, 2012)

A multi-sensor visual tracking system for behavior monitoring of at-risk children. - Ravishankar Sivalingam; Anoop Cherian; Joshua Fasching; Nicholas Walczak; Nathaniel D. Bird; Vassilios Morellas; Barbara Murphy; Kathryn Cullen; Kelvin O. Lim; Guillermo Sapiro; Nikolaos Papanikolopoulos (ICRA, 2012)

Sparse representation of point trajectories for action classification. - Ravishankar Sivalingam; Guruprasad Somasundaram; Vineet Bhatawadekar; Vassilios Morellas; Nikolaos Papanikolopoulos (ICRA, 2012)

Detecting risk-markers in children in a preschool classroom. - Joshua Fasching; Nicholas Walczak; Ravishankar Sivalingam; Kathryn Cullen; Barbara Murphy; Guillermo Sapiro; Vassilios Morellas; Nikolaos Papanikolopoulos (IROS, 2012)

A nonintrusive system for behavioral analysis of children using multiple RGB+depth sensors. - Nicholas Walczak; Joshua Fasching; William D. Toczyski; Ravishankar Sivalingam; Nathaniel D. Bird; Kathryn Cullen; Vassilios Morellas; Barbara Murphy; Guillermo Sapiro; Nikolaos Papanikolopoulos (WACV, 2012)

Reconstructing and analyzing periodic human motion from stationary monocular views. - Evan Ribnick; Ravishankar Sivalingam; Nikolaos Papanikolopoulos; Kostas Daniilidis (Comput. Vis. Image Underst., 2012)

Recognition of ballet micro-movements for use in choreography. - Justin Dancs; Ravishankar Sivalingam; Guruprasad Somasundaram; Vassilios Morellas; Nikolaos Papanikolopoulos (IROS, 2013)

Classification and Counting of Composite Objects in Traffic Scenes Using Global and Local Image Analysis. - Guruprasad Somasundaram; Ravishankar Sivalingam; Vassilios Morellas; Nikolaos Papanikolopoulos (IEEE Trans. Intell. Transp. Syst., 2013)

Tensor Sparse Coding for Positive Definite Matrices. - Ravishankar Sivalingam; Daniel Boley; Vassilios Morellas; Nikolaos Papanikolopoulos (IEEE Trans. Pattern Anal. Mach. Intell., 2014)

Tensor Dictionary Learning for Positive Definite Matrices. - Ravishankar Sivalingam; Daniel Boley; Vassilios Morellas; Nikolaos Papanikolopoulos (IEEE Trans. Image Process., 2015)