CGL Meeting Agenda

Wednesday, November 27th, 1996

Valid HTML
Location:
DC 1304
Time:
11:30 AM
Chair:
Bill Cowan

1. Adoption of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour this week:
To be determined
Coffee hour next week:
To be determined

3. Next meeting

Date:
December 4th, 1996
Location:
DC 1304
Time:
11:30 AM
Chair:
Itai Danan
Technical presentation:
Bill Cowan

4. Forthcoming

Chairs:
  1. Matthew Davidchuk
  2. Chris Davies
  3. Ed Dengler
Tech Presenters:
  1. Itai Danan
  2. Matthew Davidchuk
  3. Chris Davies

5. Technical Presentation

Presenter:
Balasingham Balakumaran
Title:
Unknown at this time
Abstract:
Unknown at this time

6. General Discussion Items

  1. CGL Christmas party -time -location
  2. Lab meeting next term - time

7. Action List

  1. Navid Sadikali and Richard Bartels:
    UofT visit in April

8. Director's Meeting

9. Seminars


          The Institute for Computer Research (ICR)

                      Presents a Seminar on

          "From Articulatory Commands to Speech Sounds:
Biomechanical models of the Vocal Tract and Inversion Techniques"


by:     Rafael Laboissiere

of:     Institut de la Communication Parlee

        Grenoble, France


Date:   Wednesday, November 27, 1996

Time:   1:30 p.m.

Place:  William G. Davis Computer Research Centre, Room 1302



Abstract:

This talk will present results of work done during the last years
in  the  framework of the European project Speech MAPS. This pro-
ject was headed by ICP and with the  participation  of  13  other
labs  throughout  Europe.  The  main  goal  of the project was to
answer the question : "Can an articulatory speech robot learn  to
produce  articulatory commands from sounds?" In the first part of
the talk, I will outline the  main  achievements  of  my  present
research  on biomechanical models of oro-facial systems, consist-
ing essentially of sagittal models of jaw, tongue, hyoid and lar-
ynx  and  their  attached muscles. The main interest is to under-
stand how the Central Nervous System organizes  commands  at  the
muscle  level to produce movements observed in speech. (This work
has been done in collaboration with  the  McGill  University  and
Geneva University teams). In the second part of the talk, a video
tape will be shown which summarizes the main results obtained  in
the Speech MAPS project.



COMPUTER GRAPHICS SEMINAR

                    -Wednesday, November 27, 1996

Guenther  Greiner, IMMD, Friedrich Alexander University
of Erlangen-Nuernberg, Germany, will speak on ``Splines
in  Real  World  Applications:  CNC-Programs  and  Lens
Design''.

TIME:                3:30-4:30 p.m.

ROOM:                DC 3301

ABSTRACT

In  the  talk  we  present  two  applications of spline
theory.   Both  have  been  developped  with industrial
partners:

(1)   Optimization   of   CNC-Programs   (with  Siemens
Automation Group, Erlangen)

Modern  CNC control units can process spline data. Many
of  the  existing  NC-programs  still  use  linear path
description   for   specifying   the  geometry.   These
descriptions  usually  require  a  huge amount of data,
thus  making  the  production  process  very  slow.  By
conversion to a cubic spline representation, the amount
of  data  can  be  reduced  substantially.  Of  course,
specified  tolerances  have  to  be  met.  Among  other
features,   sharp   edges   have  to  be  detected  and
preserved.

(2)  Design of progressive lenses (with R + H, Optische
Fabrik, Bamberg).

When  designing  progressive lenses, i.e. lenses with a
varying refracting power, one cannot avoid that optical
errors  (astigmatism)  occur.  The aim is to keep these
errors  as  small  as  possible and try to move them to
non-important regions (boundary of the lens).  The tool
developed  uses  the  variational  approach  to  spline
modeling, i.e. suitable functionals will be minimized.

10. Lab Cleanup (until 12:30 or 5 minutes)