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UCSD Computer Vision

Sameer Agarwal, PhD

More info at: http://www.cs.washington.edu/homes/sagarwal/





Projects


Perception of Reflectance

We design and implement a comprehensive study of the perception of gloss. This is the largest study of its kind to date, and the first to use real material measurements. In addition, we develop a novel Multi-Dimensional Scaling (MDS) algorithm for analyzing pairwise comparisons. The data from the p...

Tissue Microarray Analysis

Generalized Non-metric Multidimensional Scaling

Vision for Structural Biology

Globally Optimal Structure and Motion Estimation

In this line of work, we persent globally optimal solutions to several important problems in multiview geometry. Structure from motion problems are inherently non-convex and these works rely on efficient construction of relaxations using developments in convex optimization and algebraic geometry.

Chromatic Entropy

Recent interest in region based image coding has given rise to graph coloring based partition encoding methods. These methods are based on the four color theorem for planar graphs, and assume that a coloring for a graph with the minimum possible number of colors will result in the most compressible ...

Hypergraph Clustering

We consider the problem of clustering in domains where the affinity relations are not dyadic (pairwise), but rather triadic, tetradic or higher. The problem is an instance of the hypergraph partitioning problem. We propose a two-step algorithm for solving this problem. In the first step we use a nov...

Motion Segmentation

Refractive Optical Flow

This paper presents a novel generalization of the optical flow equation to the case of refraction, and it describes a method for recovering the refractive structure of an object from a video sequence acquired as the background behind the refracting object moves. By structure here we mean a represen...




Publications


2009
Wills J., Agarwal S., Kriegman D., Belongie S., "Toward a Perceptual Space for Gloss", ACM Transactions on Graphics, vol. 28, no. 4, pp. 1-15, 2009. [BibTex][pdf]
Chandraker M., Agarwal S., Kriegman D., Belongie S., "Globally Optimal Algorithms for Stratified Autocalibration", International Journal of Computer Vision (IJCV), no. to appear, 2009. [BibTex][pdf]
2008
Kahl F., Agarwal S., Chandraker M., Kriegman D., Belongie S., "Practical Global Optimization for Multiview Geometry", IJCV, vol. 79, no. 3, pp. 271-284, 2008. [BibTex][pdf]
2007
Chandraker M., Agarwal S., Kriegman D., "ShadowCuts: Photometric Stereo with Shadows", CVPR, Minneapolis, 2007. [BibTex][pdf]
Chandraker M., Agarwal S., Kahl F., Kriegman D., Nister D., "Autocalibration via Rank-Constrained Estimation of the Absolute Quadric", CVPR, Minneapolis, 2007. [BibTex][pdf]
Agarwal S., Wills J., Cayton L., Lanckriet G., Kriegman D., Belongie S., "Generalized Non-metric Multidimensional Scaling", AISTATS, San Juan, Puerto Rico, 2007. [BibTex][pdf]
Chandraker M., Agarwal S., Kriegman D., Belongie S., "Globally Optimal Affine and Metric Upgrades in Stratified Autocalibration", ICCV, 2007. [BibTex][pdf]
2006
Agarwal S., Chandraker M., Kahl F., Kriegman D., "Practical Global Optimization for Multiview Geometry", European Conference on Computer Vision (ECCV), pp. 271-284, May, 2006. [BibTex][pdf]
Wills J., Agarwal S., Belongie S., "A Feature-based Approach for Dense Segmentation and Estimation of Large Disparity Motion", International Journal of Computer Vision (IJCV), vol. 68, no. 2, pp. 125-143, June, 2006. [BibTex][pdf]
Agarwal S., Branson K., Belongie S., "Higher-Order Learning with Graphs", International Conference On Machine Learning (ICML), Pittsburgh, PA, 2006. [BibTex][pdf]
Mallick S., Agarwal S., Kriegman D., Belongie S., Carragher B., Potter C., "Structure and View Estimation for Tomographic Reconstruction: A Bayesian Approach", IEEE Conference on Computer Vision and Pattern Recognition (CVPR), New York City, 2006. [BibTex][pdf]
Agarwal S., Chandraker M., Kahl F., Kriegman D., Belongie S., "Practical Global Optimization for Multiview Geometry ", European Conference on Computer Vision (ECCV), vol. 1, Graz, Austria, pp. 592-605, 2006. [BibTex][pdf]
2005
Agarwal S., Lim J., Zelnik-Manor L., Perona P., Kriegman D., Belongie S., "Beyond Pairwise Clustering", CVPR, vol. 2, San Diego, CA, pp. 838-845, 2005. [BibTex][pdf]
2004
Agarwal S., Mallick S., Kriegman D., Belongie S., "On Refractive Optical Flow", ECCV, Prague, Czech Republic, Springer Verlag, 2004. [BibTex][pdf]
2003
Wills J., Agarwal S., Belongie S., "What Went Where", IEEE Conference on Computer Vision and Pattern Recognition (CVPR), vol. 1, Madison, WI, pp. 37-44, 2003. [BibTex][pdf]
Agarwal S., Belongie S., "Segmentation by Example", Technical Report, no. CS2003-076: UCSD, 2003. [BibTex][pdf]
Agarwal S., Ramamoorthi R., Belongie S., Jensen H., "Structured Importance Sampling of Environment Maps", SIGGRAPH, San Diego, CA, 2003. [BibTex][pdf]
2002
Agarwal S., Belongie S., "On the Non-Optimality of Four Color Coding of Image Partitions", ICIP, vol. 2, pp. 677-680, 2002. [BibTex][pdf]