Background:

I completed my Ph.D. at the University of British Columbia in May, 2004 and was appointed as a Lecturer at University College Dublin effective September, 2004. My Ph.D. research involved computing a topological abstraction of scalar fields called the contour tree and applying it to problems in scientific and medical visualization.

Broadly speaking, I am interested in almost anything that combines geometry, computers and a visual element. This includes computer graphics, computational geometry, scientific and medical visualization, and graph theory.

Teaching:

My principal teaching area at UCD is currently Computer Graphics.

• COMP 3003 / 3621 Introductory Computer Graphics
  • Autumn 2005
  • Sample COMP 3003 Projects From Autumn 2004
• COMP 4004 Advanced Computer Graphics
  • Spring 2005
• Visualization (module in the M.Sc. Computational Science course)
  • Visualization

Research:

I continue to be interested in topics related to topology and geometry in graphics and visualization. Here are some examples of the type of work I do (more to come as I find time):

• Contour Tree Computation
• Path Seeds for Contour Extraction
• Flexible Isosurfaces
• Contour Tree Simplification
• Modelling Topology in Non-Simplicial Meshes
• Geometric and Topological Isosurface Quality
• Multi-variate Visualization

I have also started up a reading group for anyone interested in Computer Graphics and Visualization at UCD:

• UCD Graphics Reading Group

Post-Graduate Students:

I am currently looking for post-graduate students in graphics, visualization, computational geometry and computational topology. I am particularly interested in students with demonstrated ability in graphics, visualization, parallel computation and geometric reasoning. Some topics that I intend to pursue in the future include:

• Applications of Visualization:
  • Archaeological Visualization
  • Biomedical Visualization
  • Engineering
  • Molecular Matching
• Contour Tree-Based User Interfaces
  • Flexible Volume Rendering
  • Visual Representation of Contour Trees
  • Volumetric Queries Using Contour Trees
• Graphics & Rendering:
  • Automatic Analysis of Lidar Building Scans
  • User Controls for Animation
• Isosurface Quality
  • Improving on Histogram Analysis of Spatial Data
  • Statistical Analysis of Isosurface Complexity
  • Statistical Signatures of Spatial Data
• Isosurface Extraction and Volume Rendering
  • GPU-accelerated Isosurface Extraction
  • Spatial and Statistical Structures for Accelerated Rendering
• Parallel Topological Computation
  • Parallel Extraction of Single Contours
  • Parallel Implementations of Flexible Isosurfaces
  • Single Contour Extraction in Graphics Hardware
• Topological Properties of Advanced Segmentation Methods
  • Automated Seeding of Non-Isovalued Segmentation
  • Nesting Properties of Level Set & T-Snake Methods
  • Topology of Spline Functions
• Topological Simplification
  • Geometric Measures
  • Hybrid Tree / Mesh Simplification
  • Terrain Simplification