PUBLICATIONS

I have published ten peer-reviewed computer graphics papers and two book chapters, in addition to three papers in other fields. Much of my earlier work, including that for which I received my Master's degree, concentrated on mesh decimation/simplification. Decimation algorithms convert a high-resolution triangle mesh, to an approximation mesh with fewer triangles (often a few percent of the original). The time required to display a mesh is proportional to the number of triangles; therefore computers will be able to display such simplified meshes much faster than the originals. This is important with the increasing use of 3D scanners to generate meshes from physical objects; often these meshes are in signficantly larger detail than necessary.

My later work (including my Ph.D. thesis) concentrated on rendering, which is the term for the process of generating a final image from a given description of the world. In particular, I was interested in algorithms to allow a designer to exercise creative control over the appearance and detail of the rendered scene, especially with respect to shadows and global illumination.

As a “detour and frolic,” I collaborated with Zafer Barutçuoglu to apply a method (which we termed “Bayesian Aggregation”) for hierarchical classification of datasets. We start with a labelled hierarchical example dataset – for example one of 3D models that are labeled “Animal,” “Bird,” “Eagle,” “Duck,” etc. Then, given a new unlabeled example, we predict which classes this example should be classified as. Our contribution is to do so in a way that takes advantage of the hierarchy information (for example, if an object is an Eagle and an Animal, it must also be a Bird). We applied this to shapes, music genres, and protein function, significantly improving overall accuracy.

Density-based Outlier Rejection in Monte Carlo Rendering Pacific Graphics (September 2010)		Rendering Filters for Controlling Detail and Creating Effects Ph.D. Thesis (June 2009)
Scalar to Polygonal Extracting Isosurfaces Using Geometry Shaders Chapter in ShaderX7, published by Charles River Media (March 2009)		Advanced Interactive Medical Visualization on the GPU Journal of Parallel and Distributed Computing (October 2008)
Implementing Real-time Mesh Simplification Using the GPU Chapter in ShaderX6, published by Charles River Media (March 2008)		Bayesian Aggregation for Hierarchical Classification Princeton Computer Science Techincal Report TR-785-07
Subtractive Shadows: A Flexible Technique for Shadow Level-of-Detail Journal of Graphics Tools (March 2008) Technical Report		Bayesian Aggregation for Hierarchical Genre Classification International Symposium on Music Information Retrieval 2007
Stylized Shadows Symposium on Non-photorealistic Animation and Rendering 2007		Real-time Mesh Simplification Using the GPU Symposium on Interactive 3D Graphics 2007
Inverse Shade Trees for Non-Parametric Material Representation and Editing SIGGRAPH 2006		Hierarchical Shape Classification Using Bayesian Aggregation Shape Modeling International 2006 Files: 4-Page Tech Report, Conference Presentation, Princeton Shape Benchmark
Pose-independent Simplification of Skeletally Articulated Meshes ACM Symposium on Interactive 3D Graphics and Games 2005 Files: Conference Presentation, General Exam Presentation, Demo Movie		Efficient Implementation of Real-time View-dependent Multiresolution Meshing IEEE Transactions on Visualization and Computer Graphics (May-June 2004)
XFastMesh: Fast View-dependant Mesh Simplifcation from External Memory IEEE Visualization Conference 2002 Files: Conference Presentation, XFastMesh Demo Movie		A Modular Client-Server Discrete Event Simulator for Networked Computers Proceedings of the 35th Annual Simulation Symposium (April 2002)
A General Purpose Discrete Event Simulator Symposium on Performance Evaluation of Computer and Telecommunication Systems (July 2001)