Stephen Krotosky, Ph.D.

Graduate Student Researcher
Computer Vision and Robotics Research Laboratory
Department of Electrical and Computer Engineering

University of California, San Diego
SERF Room 150
9500 Gilman Dr. 0434
La Jolla, CA 92093-0434

Phone: (858) 822-0002
Fax: (858) 822-5336
krotosky at ucsd.edu

Research Interests

I recently successfully defended my thesis to earn my Ph.D. in Electrical Engineering from the University of California, San Diego. My dissertation, On Using Multiperspective Color and Thermal Infrared Videos to Detect People: Issues, Computational Framework, Algorithms and Comparative Analysis, is the culmination of my six years spent studying in San Diego. I am currently employed as an Algorithm Development Engineer at SAIC.

 

My Ph.D. work is based on combining color and thermal infrared video for looking at people in a scene. I am interested in the problem of registering color and infrared features in scenes with parallax, as well as exploring how multimodality can increase the rate and robustness of person detection.

 

In past research, I have investigated the use of stereo cameras to detect occupant 3D head locations inside of an automobile for the purpose of intelligent airbag deployment. In addition to the development of the head detection algorithms, a framework for ground truth analysis and real-time trials has also been laid out.

Curriculum Vitae

Computer Vision and Robotics Research Laboratory (CVRR)
Laboratory for Intelligent and Safe Automobiles (LISA)
 

Publications

On Color, Infrared and Multimodal Stereo Approaches to Pedestrian Detection

Krotosky, S.J.; Trivedi, M.M; IEEE Trans. On Intelligent Transportation Systems, IN PRESS.

 

A Comparison of Color and Infrared Stereo Approaches to Pedestrian Detection

Krotosky, S.J.; Trivedi, M.M; Proc. IEEE Intelligent Vehicles Symposium, Jun. 2007. (pdf)

 

Mutual Information Based Registration of Multimodal Stereo Videos for Person Tracking
Krotosky, S.J.; Trivedi, M.M; Computer Vision and Image Understanding, Special Issue on Advances in Vision Algorithms and Systems Beyond the Visible Spectrum, Vol. 106, Issues 2-3, May-June 2007. (link)

Registration of Multimodal Imagery with Occluding Objects using Mutual Information
Krotosky, S.J.; Trivedi, M.M; Applied Perception in Thermal Infrared Imagery, IN PRESS.

Registration of Multimodal Stereo Images using Disparity Voting from Correspondence Windows
Krotosky, S.J.; Trivedi, M.M; Proc. IEEE International Conference on Advanced Video and Signal based Surveillance, Nov. 2006. (pdf)

Multimodal Stereo Image Registration for Pedestrian Detection
Krotosky, S.J.; Trivedi, M.M; Proc. IEEE Conference on Intelligent Transportation Systems, Sep. 2006. (pdf)

Multimodal Image Registration for Person Detection: Analysis and Review
Krotosky, S.J.; CVRR Technical Report, Dec. 2005.

Real-Time Stereo-Based Head Detection using Size, Shape and Disparity Constraints
Krotosky, S.; Cheng, S.J.; Trivedi, M.M; Proc. IEEE Intelligent Vehicles Symposium, Jun. 2005. (pdf)

Face Detection and Head Tracking using Stereo and Thermal Infrared Cameras for 'Smart' Airbags: A Comparative Analysis
Krotosky, S.; Cheng, S.J.; Trivedi, M.M; Proc. IEEE Conference on Intelligent Transportation Systems, Oct. 2004. (pdf)

Occupant Posture Analysis with Stereo and Thermal Infrared Video: Algorithms and Experimental Evaluation
Trivedi, M.M.; Cheng, S.; Childers, E.; Krotosky, S.; IEEE Transactions on Vehicular Technology, Special Issue on In-Vehicle Vision Systems, Vol. 53, Issue 6, Nov. 2004. (pdf)

Occupant Posture Analysis using Reflectance and Stereo Images for "Smart" Airbag Deployment
Krotosky, S.; Trivedi, M.; Proc. IEEE Intelligent Vehicles Symposium, Jun. 2004. (pdf)

Detection and identification of sardine eggs at sea using a machine vision system
Powell, J.R.; Krotosky, S.; Ochoa, B.; Checkley, D.; Cosman, P; Proc. OCEANS, 2003.

Last Modified October 31, 2007, copyright 2007 Stephen Krotosky