Meeting Agenda

Date:	April 5, 2012
Location:	DC 1331
Time:	11:30
Chair:	Simon Parent

1. Acceptance of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour last week:: Phil- thanks!
Coffee hour this week:: Easter Bunny
Coffee hour next week:: Grace

3. Forthcoming

Date:	April 12, 2012	April 19, 2012	April 26, 2012	May 3, 2012
Location:	DC 1331 11:30	DC 1331 11:30	DC 1331 11:30	DC 1331 11:30
Chair:	Alex Pytel	Matthew Thorne	Grace Yao	Zainab AlMeraj
Technical Presentation:	Lesley Northam	Simon Parent	Alex Pytel	Matthew Thorne

4. Technical Presentation

Stephen Mann	Title : Perspective Projection in a Conformal Model Abstract: I will review a method of Goldman to represent perspective projection as a versor in the conformal model of geometric algebra. This is a somewhat counter-intuitive result, since perspective projections do no preserve angles and are thus non-conformal. Goldman's technique starts with a view direction and distance to the viewing plane, from which he constructs (with heavy use of trig functions) the eye point and projection plane, as well as the versor used for the perspective projection. I then give some geometric intuition about Goldman's approach, and present a simplified variant that starts with the eye point and view direction, and constructs a versor for perspective projection without using trig functions.

Stephen Mann

Title : Perspective Projection in a Conformal Model
Abstract:
I will review a method of Goldman to represent perspective projection as a versor in the conformal model of geometric algebra. This is a somewhat counter-intuitive result, since perspective projections do no preserve angles and are thus non-conformal. Goldman's technique starts with a view direction and distance to the viewing plane, from which he constructs (with heavy use of trig functions) the eye point and projection plane, as well as the versor used for the perspective projection. I then give some geometric intuition about Goldman's approach, and present a simplified variant that starts with the eye point and view direction, and constructs a versor for perspective projection without using trig functions.

5. Discussion Items

6. Action Items

Discuss Curtis' performance on Top Chef Canada.
Advance? Retreat?
Fix the conference script, or just delete this item again.

7. Conferences and Special Journal Issues

Recent Additions

SAP 2012

Upcoming Deadlines

8. Directors' Meeting

9. Seminars and Events

Wednesday, 4 April 2012, 10:30AM
  Computer Science, DC 1304
  Christopher Batty
  Simulating Liquids for Computer Graphics and Visual Effects 

Thursday, 5 April 2012, 3:30PM
  Pure Mathematics (Number Theory Seminar), MC 5136B
  Jennifer Park
  Hilbert's tenth problem over number fields

Monday, 9 April 2012, 9:30AM
  Computer Science (Database Research Group), DC 1331
  Patrick Kling
  Distributed XML Query Processing 

Tuesday, 10 April 2012, 9:30AM
  Computer Science (Artificial Intelligence Lab), DC 2306C(AI Lab)
  John Finnson
  Modeling trust in multiagent mobile vehicular ad-hoc networks through
  enhanced knowledge exchange for effective travel decision making 

Wednesday, 11 April 2012, 9:00AM
  Computer Science (Information Retrieval Group), DC 2310
  Mona Mojdeh
  Personal Email Spam Filtering with Minimal User Interaction 

Monday, 16 April 2012, 12:30PM
  Institute for Quantum Computing, RAC1 2009
  David Kaiser
  How the Hippies Saved Physics

Also see other Math and CS postings.