Meeting
Agenda
Wednesday, April 22, 1998
- Location:
- DC 1304
- Time:
- 1:30
- Chair:
- Kirk Haller
1. Adoption of the Agenda - additions or deletions
2. Coffee Hour
- Coffee hour this week:
- Blair Conrad
- Coffee hour next week:
3. Next meeting
- Date:
- Wednesday, April 29, 1998
- Location:
- DC 1304
- Time:
- 1:30
- Chair:
- Rob Kroeger
- Technical presentation:
- Glen Evans
4. Forthcoming
- Chairs:
- Celine Latulipe (May 6th)
- Nathan Litke (May 13th)
- Marryat Ma (May 20th)
- Tech Presenters:
- Patrick Gilhuly (May 6th)
- Eric Hall (May 13th)
- Kirk Haller (May 20th)
5. Technical Presentations
- Presenter:
- Itai Danan
- Title: VisualAge: A New Era for Programming
-
- Abstract: This short presentation introduces visual programming as a
tool to enhance programmer's productivity without compromising the power
and flexibility of traditional programming. This presentation also explains
how visual composition works and what are the advantages and disadvantages
it gives to programmers.
-
6. General Discussion Items
7. Action List
- Deadline for full refund(?) is May 30, 1998.
- Alias/SideFX talks coming; send abstracts to Mike McCool
8. Director's Meeting
9. Seminars
DEPARTMENT OF COMPUTER SCIENCE
UNIVERSITY OF WATERLOO
SEMINAR ACTIVITIES
Computer Science Seminar
- Monday, April 27, 1998
Dr. Marek Teichmann, MIT Computer Graphics Group will
speak on "Creating and Animating Polygonal Models''
ROOM: Davis Centre Room DC1304
TIME: 10:30 a.m. - 11:30 a.m.
ABSTRACT
Creating articulated geometric models is a common task
in animation systems. With the advent of laser
scanners, it is now practical to obtain polygonal
models of actual objects. I will describe a new
algorithm for the reconstruction of polygonal meshes
from point sets with normal information at each point.
Then, starting from a 3D polygonal mesh representing an
object to be animated, a common, but tedious approach
is to manually design a skeleton, and the binding to
couple model motions to those of the skeleton.
I will also present a simple method for automating the
above tasks. Given a 3D polygonal mesh representing an
object, an approximation to the mesh's medial axis is
efficiently computed using a 3D Voronoi diagram of the
mesh vertices, and connectivity information within the
mesh. Selected nodes of the resulting tree structure
are then interpreted as joints of an I-K skeleton, and
the chains connecting them as its links. A spring
network is then generated to bind the I-K skeleton to
the object boundary, so that skeletal motions will
affect the boundary in a reasonable way, as specified
by the animator.
DEPARTMENT OF COMPUTER SCIENCE
UNIVERSITY OF WATERLOO
SEMINAR ACTIVITIES
Master's Thesis Presentation
- Tuesday, April 28, 1998
Tali Zvi, Graduate Student, Department of Computer
Science, University of Waterloo, will speak on
``Visualization Methods for Flow in Fractured
Domains''.
ROOM: Davis Centre Room DC1304
TIME: 11:30 a.m. - 12:30 p.m. [note time change]
ABSTRACT:
Recently, scientific visualization has become an
important tool used in research to investigate and
understand physical phenomena. Particle advection is a
common technique used in flow visualization and
although it is used to visualize various types of flow,
little work has been done on the use of particle
advection for flow in fractured domains. Most advection
algorithms use mean values in a vector field, which
results in an inaccurate and incomplete visualization
of the flow.
In this work a particle advection algorithm is
described, which can be effectively used in
visualization of flow in fractured domains. Unlike
existing algorithms, flow trends can be visualized with
this algorithm using a probability distribution
function. Incoming and outgoing flows may be specified
to account for fluid sources and sinks, respectively.
In addition, simultaneous visualization of scalar
fields and multiple vector fields is possible. Various
mapping schemes were tested to allow simultaneous
representation of several characteristics of the flow.
The results of this research are presented both on a
CD-ROM and on the World Wide Web.
DEPARTMENT OF COMPUTER SCIENCE
UNIVERSITY OF WATERLOO
SEMINAR ACTIVITIES
Master's Essay Presentation
-Tuesday, April 28, 1998
Alex Qian, graduate student, Dept. Comp. Sci., Univ.
Waterloo, will speak on ``A Review of IP Multicast
Protocols''.
TIME: 1:30-2:30 p.m.
ROOM: DC 1331
ABSTRACT
Multicast is the underlying technology for multi-party
applications. With the increasing demand for
multimedia applications such as video-conferencing and
network games, multicast has become an important
service. IP multicast protocols have the goal of
achieving efficient and scalable mutlicasting. Many
multicast protocols exist, each with its own strengths
and weaknesses. I will look at several multicast
protocols and comment on their differences.
10. Lab Cleanup