Alex Berg a.k.a. Alexander Berg

	Alex Berg ... Computer Science Building 0401 Columbia University 1214 Amsterdam Avenue New York, NY 10027 aberg@cs.columbia.edu
	Research \| Publications \| Teaching \| Links
	I am a research scientist at Columbia University working with Shree Nayar and Peter Belhumeur. I completed a Ph.D. in Fall 2005, at U.C. Berkeley with Jitendra Malik, and have had the chance to work with many wonderful people.

I am interested in all aspects of computer vision and related problems in other fields. My thesis was on shape and object recognition in images using a new take on deformable templates. I also work on recognizing and synthesizing human action in video, recovering human body poses from photographs, detecting and identifying human faces in images, detecting vehicles in images, and more...

Code

INRIA Pedestrian Detector | Fast IKSVM classifiers | Additive Classifiers

Research

Shape Matching and Object Recognition
Non-rigid alignment of shapes for object recognition.

Geometric Blur
Averaging over geometric distortions.

Action Recognition and Synthesis
Recognizing and synthesizing actions in video.

Recovering poses of humans in images
Finding poses in still images using exemplar based and bottom-up approaches.

Names and Faces
Associating names and faces in news photographs.

Publications

Max-Margin Additive Models for Detection [pdf]
Subhransu Maji, Alexander C. Berg, ICCV 2009 (Kyoto)
Attribute and Simile Classifiers for Face Verification [pdf]
Neeraj Kumar, Alexander C. Berg, Peter N. Belhumeur, Shree K. Nayar, ICCV 2009 (Kyoto)
Finding Iconic Images
Tamara L. Berg, Alexander C. Berg
Proceedings of the 2nd Internet Vision Workshop, 2009
Classification using Intersection Kernel Support Vector Machines is Efficient [pdf][CODE]
Subhransu Maji, Alexander C. Berg, Jitendra Malik
CVPR 2008
Parsing Images of Architectural Scenes [pdf]
Alexander C. Berg, Floraine Grabler, Jitendra Malik
ICCV 2007
Detecting Categories in News Video using Acoustic, Speech and Image Features [pdf]
Slav Petrov, Arlo Faria, Alexander C. Berg, Pascal Michaillat, Andreas Stolcke, Dan Klein, Jitendra Malik
(video) TREC 2006
SVM-KNN: Discriminative Nearest Neighbor Classification for Visual Category Recognition [pdf] [ps]
Hao Zhang, Alexander C. Berg, Michael Maire, Jitendra Malik
CVPR 2006
Recovering Human Body Configurations using Pairwise Constraints Between Parts [pdf] [ps]
Xiaofeng Ren, Alexander C. Berg, Jitendra Malik
ICCV 2005
Shape Matching and Object Recognition using Low Distortion Correspondence [pdf] [ps] [ppt]
Alexander C. Berg, Tamara L. Berg, Jitendra Malik
IEEE Computer Vision and Pattern Recognition (CVPR) 2005
Shape Matching and Object Recognition using Low Distortion Correspondence [pdf] [ps]
Alexander C. Berg, Tamara L. Berg, Jitendra Malik
U.C. Berkeley Technical Report, Dec. 2004
Names and Faces [pdf] [ps]
Tamara L. Berg, Alexander C. Berg, Jaety Edwards, Michael Maire, Ryan White, Yee Whye Teh, Erik Learned-Miller, David A. Forsyth
In submission
Who's in the Picture [pdf] [ps]
Tamara L. Berg, Alexander C. Berg, Jaety Edwards, David A. Forsyth
NIPS 2004
Names and Faces in the News [pdf] [ps]
Tamara L. Berg, Alexander C. Berg, Jaety Edwards, Michael Maire, Ryan White, Yee Whye Teh, Erik Learned-Miller, David A. Forsyth
Computer Vision and Pattern Recognition (CVPR) 2004, Washington D.C., pp 848-854.
Video Based Motion Synthesis by Splicing and Morphing [pdf] [ps]
Gregory P. Mori, Alexander C. Berg, Alexei A. Efros, Ashley Eden, Jitendra Malik
U.C. Berkeley Technical Report UCB/CSD-4-1337
Recognizing Action at a Distance [pdf] [ps]
Alexei A. Efros, Alexander C. Berg, Gregory P. Mori, Jitendra Malik
International Conference on Computer Vision (ICCV) 2003, Nice, pp 726-733.
Geometric Blur for Template Matching [pdf] [ps]
Alexander C. Berg, Jitendra Malik
Computer Vision and Pattern Recognition (CVPR) 2001, Hawaii, pp I.607-614
Approximating Aggregate Queries about Web Pages via Random Walks [pdf] [ps]
Ziv Bar-Yossef, Alexander C. Berg, Steve Chien, Jittat Fakcharoenphol, Dror Weitz
Very Large Data Bases (VLDB) 2000, Cairo, pp 535-544
Shape Matching and Object Recognition [pdf] [ps]
Alexander C. Berg
Ph.D. Thesis, Computer Science Division, U.C. Berkeley, December 2005

	Teaching
	Computer Science cs70 Discrete Mathematics for Computer Science Fall 2000 cs170 Efficient Algorithms and Intractable Problems Fall 1997, Fall 1999 cs174 Combinatorics and Discrete Probability Spring 1998 cs184 Foundations of Computer Graphics Fall 1998, Spring 1999, Spring 2000 cs284 (Graduate) Computer-Aided Geometric Design Fall 1999
	Mathematics math 54 Linear Algebra Spring 1996 math 55 Discrete Mathematics Fall 1995

	Links
		Computer Vision Seminar Schedule for the weekly Computer Vision Seminar.
		Computer Vision Group
		Old Course Notes Notes and other materials from two undergraduate theory courses I have TA'd, available upon request.
		CGVV'01 Workshop on the Convergence of Graphics, Vision, and Video 2001. A great workshop in Berkeley over spring break.
		Appearance Models Course Page A computer vision / computer graphics course at Berkley in spring 2001 in cooperation with Pat Hanrahan and others from Stanford.

Code

Research

Publications

Teaching

Links