Spring 2010

February 11

Li Wu 
Title: Polynomials and Differential Equations

February 25

James Baglama 
Title: Krylov Subspace Methods: How to Solve Large Scale Eigenvalue Problems 
March 11

Tim Toolan 
Title: RankOne Modification of the Singular Value Decomposition 
March 18

Tomas Francisco,
Yago Vicente, Chris Allen, and JeanYves Herve 
Title: Fitting and Registration of MultiRepresentation Models of Knee
Cartilage Surfaces
We will present ongoing work on the representation of surfaces of knee
articular cartilage. Our input consists of 3D meshes obtained by
segmentation of MRI data. Our model combines this mesh information with
implicit and parametric (NURBS) representations of the surface. We use
these joint representations to study the local geometry of the
cartilage's surface. We also register surfaces obtained from yearly
scans of the same patient to study the longitudinal evolution of these
local geometric properties. The toolbox used for this project is fairly
typical for computer vision (visual reconstruction): digital geometry,
computational geometry, multidimensional optimization and solution of
nonlinear equations.

April 8

Pankaj L Ahire 
Title:Strategies for Explicit Image Detection
via Automated Image Analysis
In this talk I will present the work being done by the Human Image
Detection group at the Digital Forensics Center at URI.
I shall give a brief overview of the contemporary framework of Image
analysis, object detection techniques, learning approaches, and
evaluation metrics. The various approaches we tried will then be
explained in context of these techniques.
As this is an ongoing project, I will conclude by presenting our
current results and ideas for future direction.

April 22

JeanYves Herve 
Title: Detection of cylindrical rods in CT scans of soil samples
I will present work that we did in collaboration with the US EPA. EPA
researchers have developed an ecological criterion to estimate the
quality of coastal and marsh soils using the density of live roots and
worm tubes present in a soil sample. Automating the computation of this
criterion requires detecting straight cylindrical "calibration" rods in
volumetric CT scans of soil samples. Although this sounds like a very
simple problem, it turns out to be a fairly complex (and slow) task. I
will explain why and discuss the solutions that we have developed for
this problem. 
April 29

Josh Bacon and Shawn Case 
Title (Shawn Case): Quadrature Rules using Szego Polynomials
Title (Josh Bacon): On Szego Polynomials and System Theory 