CGL Meeting Agenda

Wednesday, September 16, 1998

Location:
DC 1304
Time:
1:30
Chair:
Michael McCool :-(
Member List

0. New lab members

1. Adoption of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour this week:
Blair Conrad :-)
Coffee hour next week:
Any volunteers?

3. Next meeting

Date:
Wednesday, September 23, 1998
Location:
DC 1304
Time:
1:30
Chair:
Patrick Gilhuly
:-(
Technical presentation:
Ed Dengler :-(

4. Forthcoming

Chairs:
  1. Eric Hall (September 30th) :-)
  2. Jan Kautz (October 7th) :-(
  3. Rick Knowles (October 14th) :-(
Tech Presenters:
  1. Patrick Gilhuly (September 30th) :-(
  2. Eric Hall (October 7th) :-)
  3. Jan Kautz (October 14th) :-(

5. Technical Presentations

Presenter:
Blair Conrad :-)
Title:
More "Better Pasting Through Quasiinterpolation"
Abstract:
Hierarchical surface pasting is a method for adding detail to a smooth surface without increasing the complexity of the base surface. The detail is added by placing tensor product B-spline surfaces on top of the base surface.

The method by which the detail surfaces are constructed is fairly fast, but it produces details whose boundaries are less-than-perfect approximations of the base surface. Thus, the composite surface often contains gaps between the base and detail surfaces.

We will describe a technique called "quasi-interpolation" which may be used to approximate functions. We will then explain how this method may be used to produce pasted surfaces that are "more nearly continuous", with improved position and first derivative properties. Moreover, we will examine the impact that using quasi-interpolation will have on the cost of computing pasted surfaces.

6. General Discussion Items

Lab Duties
Get 'em while they're hot! See http://www.cgl.uwaterloo.ca/Private/lab_duties/index.html and send mail to Bill.
Security
We need some in light of the recent thefts from the undergrad lab.

7. Action List

8. Director's Meeting

They came. They met. They decided stuff.

9. Seminars

10. Lab Beautification