Philippos Mordohai

I HAVE MOVED ON AS A POSTDOCTORAL RESEARCHER AT
THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL.

CLICK HERE FOR MY NEW WEBPAGE.

I WILL NO LONGER UPDATE THIS PAGE.

For a 3-D model of my face using these two pictures click HERE.
This model was created with the Facevision 200 Series system made by Geometrix, Inc.

Office: PHE 108
Phone Number: 213-821 1822
E-mail: mordohai@iris.usc.edu

RESEARCH

Currently working as a Research Assistant at the Institute for Robotics and Intelligent Systems and the Integrated Media Systems Center at USC under the guidance of Professor Gérard Medioni. The focus of my research is the development of a general perceptual organization approach that is applicable to computer vision and instance-based learning problems.

    The main research projects that I have been involved in are the following:
        Perceptual organization
        Salient feature inference in natural images
        Figure completion
        Binocular stereo (integrating monocular information)
      Multiple view stereo
        3-D face modeling and recognition
        Machine learning (dimensionality estimation, nonlinear interpolation, function approximation).

For more details see the papers of the following section or my RESEARCH OVERVIEW.

PUBLICATIONS

Dissertation

P. Mordohai,"A Perceptual Organization Approach for Figure Completion, Binocular and Multiple-View Stereo and Machine Learning using Tensor Voting",August, 2005

Journal Papers

W.S. Tong, C.K. Tang, P. Mordohai, and G. Medioni, "First Order Augmentations to Tensor Voting for Boundary Inference and Multiscale Analysis in 3-D", IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 26, No. 5, May 2004, pp. 594-611, 2004
M.S. Lee, G. Medioni, and P. Mordohai, "Inference of Segmented Overlapping Surfaces from Binocular Stereo", IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 24, No. 6, pp. 824-837, June 2002

Book Chapters

G. Medioni and P. Mordohai, "Saliency in Computer Vision", to appear in Neurobiology of Attention, L. Itti, G. Rees, and J. Tsotsos (editors), Elsevier Science, 2005
G. Medioni, P. Mordohai, and M. Nicolescu, "The Tensor Voting Framework", to appear in the Handbook of Computational Geometry for Pattern Recognition, Computer Vision, Neurocomputing and Robotics, E. Bayro-Corrochano (editor), Springer-Verlag, currently in press, 2004
G. Medioni and P. Mordohai, "The Tensor Voting Framework", in Emerging Topics in Computer Vision, S.B. Kang and G. Medioni (editors), Prentice Hall, 2004

Conference and Workshop papers

P. Mordohai and G. Medioni, “Unsupervised Dimensionality Estimation and Manifold Learning in high-dimensional Spaces by Tensor Voting”, 19th International Joint Conference on Artificial Intelligence, accepted for oral presentation, Edinburgh, Scotland, July 2005 (acceptance rate for oral presentations: 18.1%)
P. Mordohai and G. Medioni, “Dense Multiple View Stereo with General Camera Placement using Tensor Voting”, Second International Symposium on 3-D Data Processing, Visualization and Transmission, Thessaloniki, Greece, September 2004
P. Mordohai and G. Medioni, "Junction Inference and Classification for Figure Completion using Tensor Voting", Fourth Workshop on Perceptual Organization in Computer Vision, Washington DC, USA, June 2004
P. Mordohai and G. Medioni, “Stereo using Monocular Cues within the Tensor Voting Framework”, 8th European Conference on Computer Vision, Lecture Notes in Computer Science, Vol. 3024, pp 588-601, Prague, Czech Republic, May 2004 (acceptance rate for oral presentations: 7.4%)
P. Mordohai, O. Dor, J. Zechar, C.G. Sammis. and Y. Ben-Zion, "Slip Surfaces in Fault Breccia From the Sierra Madre Fault Zone: Geometry and Mechanical Implications", American Geophysical Union, EOS, 2003
O. Dor, P. Mordohai, C.G. Sammis. and Y. Ben-Zion, "Slip Surfaces in Fault Breccia From the Sierra Madre Fault Zone: Geometry and Mechanical Implications", SECE, Proceedings and Abstracts, 2003
P. Mordohai and G. Medioni, "Perceptual Grouping for Multiple View Stereo using Tensor Voting", International Conference on Pattern Recognition, vol. 3, pp. 639-644, Quebec City, Canada, August 2002
P. Mordohai, G. Medioni, and M.S. Lee, "Inference of Segmented Overlapping Surfaces from Binocular and Multiple-View Stereo", Third Workshop on Perceptual Organization in Computer Vision, Vancouver, Canada, July 2001

INVITED TALKS

"Binocular and Multiple View Stereo using Tensor Voting", at the Digital Technology Center, University of Minnesota, hosted by Stergios Roumeliotis, March 2005
"The Tensor Voting Framework", at the Computer Graphics and Immersive Technologies group, hosted by Ulrich Neumann, June 2003
"Multiple View Stereo using Tensor Voting", at the NASA, Jet Propulsion Laboratory, Machine Vision Group, hosted by Larry Matthies, May 2002

PREVIOUS RESEARCH

During the Spring semester of 1999, I worked as a Research Assistant at SIPI in the Electrical Engineering Department of USC doing research on Magnetic Resonance Imaging with Professor R. M. Leahy
For my undergraduate diploma thesis I developed a plug-in for the 32-bit Windows version of Netscape Navigator that decodes pyramid encoded images and extracts an embedded watermark from them. The thesis was supervised by Professor M. G. Strintzis

TEACHING

Guest lecture on “Tensor Voting for Computer Vision Problems”, for the graduate level “Computer Vision” course (Fall 2004)
Mentored undergraduate students (a freshman and three juniors) performing research in computer vision (Summer 2004 - Spring 2005)

ACADEMICS

Currently pursuing a Ph.D. in Electrical Engineering with a minor in Finance and Business Economics at the University of Southern California (GPA 3.95)
Master of Science in Electrical Engineering at the University of Southern California. (GPA 3.92)
Diploma in Electrical and Computer Engineering at the Aristotle University of Thessaloniki, Greece. (GPA 8.14/10)

OTHER ACTIVITIES

Reviewer for the IEEE Transcations on Pattern Analysis and Machine Intelligence since August 2005
Reviewr for the Fourth Workshop on Perceptual Organization in Computer Vision, 2004
Organized the quasi-weekly Vision Seminars from January 2001 to August 2004
IMSC 3-D Face Modeling and Recognition demo (since June 2000), using the technology developed by Geometrix. For a model of my face click here, for correct recognition results with and without the goatee click here.
Face Modeling and Recognition demo at International Conference on Computer Vision 2003, NSF Workshop on Robotics and Computer Vision 2003 and Workshop on Multimodal User Authentication 2003
Organized, trained assistants and performed collection of face images of varying poses and expressions for 65 people in June 2001 and 105 people in October 2003.
Wrote a brief introduction on Tensor Voting for CV Online.
Contributed in the preparation of the Tensor Voting short course for CVPR 2003 in Madison, Wisconsin.
Assisted in the preparation of 6 proposals to the National Science Foundation, DARPA and other funding agencies

AWARDS AND MEMBERSHIPS

IMSC Award for Excellence in Technology Demonstrations 2003
Student member of the Institute of for Electrical and Electronic Engineers (IEEE) since 2001
Member Phi-Kappa-Phi All-University Honor society, The University of Southern California Chapter, since 2000
National Scholarship Foundation of Greece scholarship for having the best GPA in the Electrical and Computer Engineering Department of the the Aristotle University of Thessaloniki, 1998
National Scholarship Foundation of Greece scholarship for having a top 5 GPA in the Electrical and Computer Engineering Department of the the Aristotle University of Thessaloniki, 1997
Award of excellence in the Greek Mathematical Society Annual Student Contest 1990, 1992 and 1993

LINKS

Fight till Hell freezes over,
then fight on the ice...