From: ksbooth@cs.ubc.ca (Kellogg Booth)
Newsgroups: news.announce.conferences
Subject: AI/GI/VI '92 Advance Program
Keywords: artificial intelligence, computer graphics, computer vision
Date: 8 Apr 92 20:49:56 GMT
Expires: Fri, 15 May 1992 07:00:00 GMT
Organization: Computer Science, University of B.C., Vancouver, B.C., Canada


                   CONFERENCE ANNOUNCEMENT

                 Artificial Intelligence '92
                   Graphics Interface '92
                    Vision Interface '92

                      May 11-15, 1992
            Vancouver, British Columbia, Canada

[CONTENTS: conference summary, registration forms, housing forms,
workshop and tutorial descriptions, list of papers in technical
sessions.]

AI/GI/VI '92 is a unique event combining three Canadian research
conferences that present the latest results in artificial intelligence,
computer graphics, and computer vision.  Each conference offers a
three-day track of invited and submitted papers. Conference
participants can attend presentations in all three tracks for a single
registration fee, promoting the exchange of knowledge among these three
important disciplines. A salmon barbecue and an electronic theatre
provide additional opportunities to meet speakers and other attendees
for informal discussions in a social setting. The conference is
preceded by two days of tutorials and workshops, on selected topics of
particular interest to researchers and practitioners in all three
disciplines.

Sponsored by the Canadian Information Processing Society, through its
three special interest groups the Canadian Society for the
Computational Studies of Intelligence, the Canadian Human-Computer
Communications Society, and the Canadian Image Processing and Pattern
Recognition Society in cooperation with ACM SIGGRAPH and the Vancouver
Local ACM SIGGRAPH.

AI/GI/VI '92 will be held at the University of British Columbia, located
on Point Grey, at the west end of Vancouver, Canadas third largest
city. Vancouver is easy to reach by major airlines, with the University
about twenty minutes from the airport. In addition to the scenic
campus, the city is noted for the beauty of its setting on the Pacific
Ocean, surrounded by mountains and parks. Renowned for its casual
lifestyles, cosmopolitan atmosphere and spectacular scenery, Vancouver
offers entertainment, dining and shopping experiences for every
budget.

Tutorials

Attendees can register for one or more tutorials that will be presented
on Monday and Tuesday, May 11-12. The tutorials are presented by experts
in the field and are designed for attendees wishing to gain deeper
knowledge of the specialized topics being offered. Most of the material
is at the introductory or intermediate level.

Workshops

Also offered on Monday and Tuesday, May 11-12, are four workshops. Each
workshop has limited attendance by invitation only. Attendees wishing
to register for one or more workshops are invited to contact the
organizer for each workshop directly for additional information about
the workshop and invitations.

Technical Program

Wednesday through Friday, May 13-15, will be devoted to over one hundred
technical papers, covering current research and applications in the
fields of artificial intelligence, computer vision, and computer
graphics. All sessions will be held on campus at UBC.

Electronic Theatre

On the evening of Wednesday, May 13, an electronic theatre will feature
recent videos of computer-generated animation and scientific
visualization. A retrospective of Canadian computer animation will
highlight the show.

Banquet

On the evening of Thursday, May 14, a salmon barbecue will be held at
the Faculty Club of the University of British Columbia. All attendees
receive one complimentary invitation to this event as part of the
conference registration fee. Guests and others may attend the banquet
by buying tickets in advance or on-site.

Registration and Queries

A conference Registration Form must be completed and returned to the
address on the Form. Please note that conference registration includes
one ticket to both the electronic theatre and the banquet and one copy
of the proceedings for a single track of the technical program. Please
indicate on the form which proceedings you want. Additional tickets for
both the electronic theatre and the banquet, as well as extra copies of
all three proceedings, may be purchased in advance or on-site. Advance
purchase is recommended in all cases, to ensure availability.

There is a substantial discount for early registration. Additional
discounts are available for members of CIPS, CSCSI, CHCCS, CIPPRS, or
ACM SIGGRAPH. Students registered in accredited post-secondary
institutions are eligible to register at special student registration
rates. All fees are subject to federal Goods and Services Tax.

Payment must be made by cheque or money order. Purchase orders and
credit cards are not accepted for conference registration. A 10%
discount is allowed for those paying in US funds.

Please address all conference inquiries and requests for Registration
and Housing Forms to:

	Christine Adams, AI/GI/VI '92
	TEL: (604) 822-8990
	FAX: (604) 822-5485
	email: adams@cs.ubc.ca

Registration Form and payment should be sent to the address indicated
on the Registration Form

Accommodation

A block of rooms has been reserved in the Walter Gage Residence on the
UBC campus for AI/GI/VI '92 attendees. Credit cards may be used for
accommodation (but not for conference registration). Please complete a
Housing Form and return it with payment directly to the UBC Conference
Housing Office at the address on the Form. Please send the Housing Form
separately from the conference Registration Form.

Attendees wishing to stay in other accommodation are advised that most
hotels are a 20-30 minute drive from the UBC campus. The Gage Residence
is a short walk from all conference events.

Information and reservations for hotels can be obtained from:

	Tourism Vancouver Reservations
	(800) 888-8835 (Canada and U. S. only)
	(604) 683-2601

Fees

The conference registration fees are indicated on the Registration
Form.  You can register for the three days of technical sessions, one
day of tutorials, two days of tutorials or various combinations.  You
can also order additional electronic theatre and banquet tickets or
extra copies of one or more of the technical proceedings.  Please
request that an official Registration Form be sent to you by mail or
use the electronic form that follows this conference summary.

The rates for rooms are indicated on the Housing Form along with
details for making payment and specifying arrival and departure dates.
Please request that an official Housing Form be sent to you by mail or
use the electronic form that follows this conference summary.

The rest of this posting (long) provides electronic copies of the
Registration and Housing Forms and detailed information on the
workshops, tutorials, and technical sessions at AI/GI/VI '92.

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                      CONFERENCE REGISTRATION FORM

AI/GI/VI '92 Conference Registration Form (electronic version)
May 11-15, 1992, University of British Columbia, Vancouver

Please fill in ALL of the following information.

Last Name:       ______________________________________________

First Name:      ______________________________________________

Address:         ______________________________________________

City:            ______________________________________________

Province/State:  ______________________________________________

Postal Code/ZIP: ______________________________________________

Country:         ______________________________________________

Telephone:       ______________________________________________

1.  Circle the single registration class that applies to you and write
the single registration amount in the space indicated.

2.  Then decide if you want additional banquet or electronic theatre
tickets or extra copies of any of the proceedings.

3.  Compute the total fees, add 7% federal Goods & Services Tax, and
write this total as the payment.

4.  If registering for tutorials (NOT WORKSHOPS) indicate your choice
in the appropriate section below.

                     Before April 17...           After April 17...
CHOOSE ONLY ONE:     Member  Non-member  Student  Member  Non-Member

Conference Only      $240    $280         $90     $280    $320

Conference + 1 Day   $350    $400        $130     $400    $460

Conference + 2 Days  $425    $485        $150     $485    $530

1 Day of Tutorial    $180    $200         $60     $200    $225

1 Days of Tutorials  $270    $310         $90     $310    $360

                                               FEE        $______

ADD ONE OR MORE:
                                     Unit Cost  Quantity

Additional Banquet Tickets              $45  X  _______ = $______

Additional Electronic Theatre Tickets   $10  X  _______ = $______

Additional AI '92 Proceedings           $30  X  _______ = $______

Additional GI '92 Proceedings           $30  X  _______ = $______

Additional VI '92 Proceedings           $30  X  _______ = $______


                                               SUBTOTAL   $______


    (GST Registration No. R129902326)      ADD 7% GST     $______


              IF PAYMENT IS IN US FUNDS, SUBTRACT 10%     $______


                                       TOTAL ENCLOSED     $______


Full Payment must be sent with Registration Form.  Payment may be made
by cheque or money order.  Credit card and purchase orders are NOT
accepted.  Cheques payable to AI/GI/VI '92.

If registering for tutorials, select the one or two tutorials that you
wish to attend.  See the Technical Program schedule that follows for
the correct codes for tutorials.  Note that you may NOT register for
workshops using this form (workshops are included here for information
only).  You must contact the workshop organizer directly to arrange for
participation.

Monday May 11:   AI-W1  GI-W2  GI-T3  GI-T4  VI-T5

Tuesday May 12:  AI-W6  AI-W7  GI-T8  GI-T9  VI-T10


Tutorial Selected for Tuesday May 11:    _______


Tutorial Selected for Wednesday May 12:  _______

If registering for the conference, select the one conference proceeding
that you wish to receive with your registration (you may order
additional copies of any of the three proceedings by indicating this
above).

Circle desired conference proceeding:  AI      GI      VI

Member Discount Fees:  To qualify for member fees, you must indicate
the sponsoring society to which you belong (CIPS, CSCSI, CHCCS, ACM
SIGGRAPH) and provide a valid membership number in the spaces below.


Society:      _____________________  Member Number:   ______________

Student Discount Fees:  To qualify for student fees, you must indicate
the name of the accredited post-secondary institution in which you are
enrolled and provide a current student ID number in the spaces below.


Institution:  _____________________  Student Number:  ______________

When you have completed all of the information required,

MAIL TO:  AI/GI/VI '92
          Department of Computer Science
          University of British Columbia
          6356 Agricultural Road
          Vancouver, B.C. V6T 1Z2
          Canada

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                              HOUSING FORM

AI/GI/VI '92 Conference Housing Form (electronic version)
May 11-15, 1992, University of British Columbia, Vancouver

Use this form only to request accommodation in the Walter Gage Complex
at the University of British Columbia.  Reservations for a hotel must
be made directly with the hotel.

Please fill in ALL of the following information.

Last Name:       ______________________________________________

First Name:      ______________________________________________

Address:         ______________________________________________

City:            ______________________________________________

Province/State:  ______________________________________________

Postal Code/ZIP: ______________________________________________

Country:         ______________________________________________

Telephone:       ______________________________________________

Arrival Date:    MAY _________________ (check in after 2:00 pm)

Departure Date:  MAY __________________ (check out by 11:00 am)

CHECK THE TYPE OF ROOM YOU DESIRE

Shared Washroom

  Single room with shared washroom         ____ $29.00 / Night

Private Washroom

  Single room (single bed)                 ____ $47.00 / Night


  Suite (double bed)                       ____ $63.00 / Night


  Delux Suite (twin beds; living room      ____ $80.00 / Night
  with TV, telephone, sofa-bed;
  kitchenette)

If requesting a suite, please complete the following:

  Number of Adults:   ________   Number of Children:  ________

Single rooms with shared washroom will be substituted when requests for
private washroom cannot be accommodated.

All rates quoted in Canadian funds and subject to applicable taxes (8%
Hotel Tax, 7% GST).

DEPOSIT AND PAYMENT INFORMATION:

No deposit is required for shared washroom accommodation.

Private washroom accommodation requires a one-night deposit ($47.00,
$63.00 or $80.00 CDN).

I authorize a one night room deposit for $_________ by

      ___ VISA     ___ MasterCard  or  ___ Bank Draft enclosed


Card No.:        ______________________________________________

Expiry Date:     ______________________________________________

Cardholder Name: ______________________________________________

Signature:       ______________________________________________

Date Signed:     ______________________________________________

Payment in full due in Canadian funds at check-in by cash, traveler's
cheques, VISA or MasterCard (no personal cheques).  Cancellations
received in writing up to 48 hours prior to check-in date will receive
a refund minus $15.00 cancellation fee.  Please send this Request for
Accommodation form to the address or FAX number below before April 17,
1992.

MAIL TO:  UBC Conference Centre
          Reservations Office
          5961 Student Union Blvd.
          Vancouver, B.C. V6T 2C9
          Canada

TEL:      (604) 822-1010

FAX:      (604) 822-1001


(For office use only: HAL #G20508A)

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                           TECHNICAL PROGRAM

                                             Monday, May 11, 1992

Full Day Invited Workshop (Mark AI-W1 on Registration Form)

09-0016:30. Workshop on the Commercialization of AI Technology in
Canada

The objective of this workshop is to provide a forum for those who are
developing AI related applications, including applications in
engineering, science and business. Presentations will be on
successfully completed systems as well as general issues that relate to
system development. The workshop will also consist of an open
discussion on the current state of applied AI in Canada.

To register for this workshop contact:

Jan Mulder                         Alberta Research Council
TEL: (403) 297 7570                6815 8th Street NE
FAX: (403) 275 3003                Calgary, Alberta T2E 7H7
email: mulder@arcsun.arc.ab.ca

                                             Monday, May 11, 1992

Full Day Invited Workshop (Mark AI-W2 on Registration Form)

09:00 - 16:30. Problems and Solutions for Local Illumination

As the problems of global illumination jumped to the forefront of
research in rendering in Computer Graphics, the problems of local
illumination and light source modelling have been somewhat left
behind.  The goal of this workshop is to bring together researchers who
think differently, and are involved in active investigation of the
problems of local illumination and light source modelling.  Some of the
issues discussed will be better illuminations models, measurements of
surface reflectance, efficient implementation of models, hardware
assist and dynamic models.

To register for this workshop contact:

Alain Fournier and Pierre Poulin   Department of Computer Science
TEL: (604) 822-6994                University of British Columbia
FAX: (604) 822-5485                Vancouver, BC V6T 1Z2
email: poulin@cs.ubc.ca

                                             Monday, May 11, 1992

Full Day Tutorial (Mark GI-W3 on Registration Form)

09:00 - 16:30. Interactive Three Dimensional Graphics and Virtual Reality,
Mark Green and Chris Shaw (U. Alberta)

Over the past several years the cost of high performance three
dimensional graphics workstations has dropped tremendously, and many
new three dimensional input and output devices are now widely
available. These events have resulted in considerable interest in three
dimensional interaction and a new style of user interface called
Virtual Reality. In a virtual reality user interface, the user is
placed in the same three dimensional environment that the data
occupies. This allows the user to interact directly, in 3D, with the
data. In this course we present the basic ideas behind interactive
three dimensional computer graphics, survey the existing hardware (such
as head-mounted displays and DataGloves), and discuss software
structures and architectures. Examples drawn from the work done at the
University of Alberta and other well known research groups will augment
the concepts in this course. A case study based on the system we have
constructed at the University of Alberta will also be presented.

A basic understanding of three dimensional graphics and user interfaces
is required for this course. This course is aimed at programmers and
researchers in computer graphics, but most of the material will be
accessible to managers and others with a good technical background.

                                             Monday, May 11, 1992

Full Day Tutorial (Mark GI-T4 on Registration Form)

09:00 - 16:30. Input and Interaction: Theories, Techniques and
Technologies, Bill Buxton (U. Toronto/Xerox PARC)

Interactive systems are typically weighted on the display side, when
compared to input. Nevertheless, input is central to achieving fluid
and effective interaction. Therefore, the objective of this tutorial is
to provide the basis for balancing the scales.

We look at input from three perspectives: technologies, techniques and
theories. Technologies are discussed in the context of new taxonomies
that are more meaningful than the mouse, joystick, trackball categories
that are all too typical. The techniques discussed include stylus-based
pencentric interaction, character and gesture recognition, two-handed
input, and interacting with 3D objects. Throughout, the approach to
design is founded on a theory of the phrasing of human-computer
dialogues with pressure and motion.

The tutorial is highly illustrated, with video examples and live
demonstrations. The materials provided are intended to support
practitioners and teachers.

                                             Monday, May 11, 1992

Full Day Tutorial (Mark VI-T5 on Registration Form)

09:00 - 16:30. Neuronal Morphology of Biological Vision and Machine Vision
(Neuro-Vision) Systems, Madan M. Gupta (U. of Saskatchewan)

This is a short course introducing the basis of biological vision and
the foundation for machine vision (neuro-vision) systems.  In this
course, we will introduce the morphology of biological vision and
characteristics of biological neurons.  Neuronal morphology and
receptive fields of the biological channels (retinal, LGN, and visual
cortex) will be examined in detail.

We will examine, in detail, the mathematical morphology of visual
receptive fields, its generalizations, Gabor functions, and
discriminant operators.  We will describe the architecture of the
dynamic positive-negative neural processor for the extraction of
information from visual images, and for creating some visual functions
like visual memory, spatio-temporal filtering and coding of visual
information. We will give some examples of the use of these dynamic
neural layers for the detection of motion.  We will also present the
basic concepts of fuzzy neural networks and its applications in visual
perception and control.  This description will help to design a
generalized form of a neuro-vision system.

This course is directed toward engineers working in the area of vision
systems, and to others interested in machine vision, as well as
mathematicians interested in the new mathematics of biological vision.
A basic degree in engineering or mathematics with some familiarity of
transform theory and signal analysis would be helpful.

                                             Tuesday, May 12, 1992

Full Day Invited Workshop (Mark AI-W6 on Registration Form)

09:00 - 16:30. Uncertainty Management: Theory and Practise

This workshop will explore issues involving the management of
uncertainty in knowledge-based systems. Almost every aspect of human
behavior involves uncertainty in some way and this impacts on the
practical development of expert systems and the formal modeling of
human reasoning and cognition. Many methodologies exist for handling
these problems. However, much work remains to be done to successfully
solve the complicated issues involved.

Presentations relating theoretical ideas to practical applications  are
particularly welcome.

To register for this workshop contact:

Mary Deutsch-McLeish               Department of Computer Science
TEL: (519) 824 4120 ext 3019       University of Guelph
FAX: (519) 837 0323                Guelph, Ontario N1G 2W1
email: mary@snowhite.cis.uoguelph.ca

                                             Tuesday, May 12, 1992

Full Day Invited Workshop (Mark AI-W7 on Registration Form)

09:00 - 16:30. Machine Learning

The purpose of this workshop is to bring together people who are active
in the applications or (theoretical or experimental) studies of machine
learning. Participants in related fields such as genetic algorithms and
neural nets are also welcome. The emphasis of the workshop will be on
informal communication and exchange of ideas.

To register for this workshop contact:

Stan Matwin                        Department of Computer Science
TEL: (613) 564 5069                University of Ottawa
FAX: (613) 564 9486                Ottawa, Ontario K1N 6N5
email: stan@csi.uottawa.ca

                                             Tuesday, May 12, 1992

Full Day Tutorial (Mark GI-T8 on Registration Form)

09:00 - 16:30. CAVECAT and Telepresence: A Case Study In Video Enhanced
CSCW,  Bill Buxton (U. Toronto/Xerox PARC), Marilyn Mantei (U.
Toronto), and Ron Baecker (U. Toronto)

CAVECAT is a project at the University of Toronto that has been
investigating the use of audio, video, LAN, computer and
telecommunications technologies to support collaborative work. The
focus is very much on integrating the technology into the workplace,
such that it supports the day-to-day activities of its user community.
The point of departure for the work was the Mediaspace project at Xerox
PARC, and the RAVE system at Rank Xerox EuroPARC (which one of the
instructors was instrumental in designing). From this, CAVECAT has
evolved to the point where it is now the springboard for a larger
initiative, The Ontario Telepresence Project.

This tutorial is intended to serve two main purposes. First, it is
intended to use the case study of CAVECAT and Telepresence as the basis
for an introduction to what might be called computer enhanced video
conferencing, or video enhanced CSCW. In this capacity, it is hoped
that the course will be of interest both to those interested in
learning about the field and those active in it. We address questions
such as what we did right, what failed, what we would do differently,
and what would we do now if we were just starting out?

The second objective is to use the tutorial as an opportunity to
provide a detailed status report on the project. Our hope is that
through this our results in this fast-moving area will be disseminated
in a timely and effective manner.

                                             Tuesday, May 12, 1992

Full Day Tutorial (Mark GI-T9 on Registration Form)

09:00 - 16:30. Volume Visualization,  Arie E. Kaufman (SUNY),
William E. Lorensen (General Electric), and Roni Yagel (Ohio State U.)

Volume visualization is emerging in the nineties as a key field of
visualization, computer graphics, and computer imaging. It encompasses
an array of techniques, a technology, and a nomenclature, and it holds
substantial challenges. The techniques provide the mechanisms that make
it possible to reveal and explore the inner or unseen structures of
volumetric data and allow visual insight into opaque or complex
datasets. Volume visualization, as a technology, brings a revolution to
computer graphics and promises important breakthroughs in numerous
applications.

Volume visualization is concerned with the tasks of representing,
manipulating, and rendering volumetric data. This course provides an
overview of the technology, the nomenclature, and the techniques for
these tasks, emphasizing algorithms, architectures, and applications.
The course covers and compares different approaches in volume
representation, volume synthesis, volume and surface viewing, volume
shading, special-purpose architectures, and applications of volume
visualization.

The tutorial is designed for scientists, engineers, computer graphics
specialists, and medical researchers, who are new to the field of
volume visualization or interested in expanding their knowledge in that
field. This tutorial is based upon a recently published IEEE Tutorial
on Volume Visualization by A. Kaufman.

                                             Tuesday, May 12, 1992

Full Day Tutorial (Mark VI-T10 on Registration Form)

09:00 - 16:30. Computer Architecture for Computational Vision,
James J. Little (U. of British Columbia)

Recent developments, new architectures for vision machines, respond to
the increasing demands that vision systems make on machines.  New
machines enlarge the range of vision tasks, and change the role of
vision systems  fast vision means that complex visual tasks can be
performed by active robotic systems. Machine vision has been a forcing
function for new development of technology, primarily because it is
computationally intensive.  Like most scientific computing, machine
vision requires an enormous amount of computational resources  unlike
most scientific computing, it also requires high bandwidth input and
output. To face the challenge of interpreting and utilizing images
rapidly, machine vision turns to novel machine architectures to provide
the necessary computation and communication.

The workshop will include the following topics:
  1) structure of vision computational processes
  2) structure of machines that implement vision processes.
  3) new architectures (distributed, concurrent, parallel)
  4) specialized architectures

                                             Wednesday, May 13, 1992

Artificial Intelligence '92 Technical Papers

08:30-09:30.  SESSION: Planning.

Chair: David Poole (UBC)

Generating Object Descriptions:  Integrating Examples with Text, Vibhu
O.  Mittal and Cecile L. Paris (USC)

Formalizing Plan Justifications, Eugene Fink and Qiang Yang (U.
Waterloo)

Building Macros in Deterministic and Non-deterministic Domains,
Bertrand Pelletier and Stan Matwin (U. Ottawa)

09:30-10:30.  SESSION:  Invited Speaker.

Using Constraints, Alan Mackworth (UBC)

10:50-11:50.  SESSION:  Philosophical Issues/Data Classification.

Chair: Russell Greiner (Siemens Corporate Research)

Artificial Intelligence in the Real World: A Critical Perspective,
Richard S.  Rosenberg (UBC)

Visual Thinking in the Development of Daltons Atomic Theory, Paul
Thagard and Susan Hardy (Princeton U.)

Efficient Algorithms for Identifying Relevant Features, Hussein
Almuallim and Thomas G. Dietterich (Oregon State U.)

13:30-14:30.  SESSION:  Search.

Chair: Richard S. Rosenberg (UBC)

Explicitly Schema-Based Genetic Algorithms, Dwight Deugo and Franz
Oppacher (Carleton U.)

Binary Iterative-Deepening-A*: An Admissible Generalization of IDA*
Search, Brian G. Patrick (College Militaire Royal)

Probabilistic Hill-Climbing:  Theory and Applications, Russell Greiner
(Siemens Corporate Research)

14:30-15:30.  SESSION:  Invited Speaker.

How to Prove Theorems by Induction, Alan Bundy (U.  Edinburgh)

15:50-17:10.  SESSION:  Applications.

Chair: Bob Mercer (U. Western Ontario)

Synthesis of System Configurations Based on Desired Behavior, Michel
Benaroch and Vasant Dhar (U.  New York)

An Interactive Constraint-Based Expert Assistant for Music Composition,
Russell Ovans and Rod Davison (SFU)

A Customization Environment for the Expert Advisor Network Management
System, Tony White and Andrzej Bieszczad (Carleton U.)

Metaknowledge in the LOUTI Development System, Gilbert Paquette (U.
Quebec)

17:20-18:30.  CSCSI Meeting.

20:00-21:45.  Electronic Theatre.

                                             Thursday, May 14, 1992

Artificial Intelligence '92 Technical Papers

08:50-10:30.  SESSION:  Reasoning With Uncertainty.

Chair: Mary Deutsch-McLeish

(U. of Guelph)

Computing the Lower Bounded Composite Hypothesis By Belief Updating,
Yang Xiang (SFU)

A Rational Agent Can be Surprised no Matter What, Yen-Teh Hsia (IRIDIA)

A Continuous Belief Function Model for Evidential Reasoning, Chua-Chin
Wang and Hon-Son Don (SUNY)

An Efficient Approach to Probabilistic Inference in Belief Nets, Zhaoyu
Li (Oregon State U.)

Definite Integral Information, Scott D.  Goodwin, Eric Neufeld, and
Andre Trudel (U. Regina)

10:50-11:50.  SESSION:  Invited speaker.

Memory, Mind, and Models of Self, Donald Perlis (U.  Maryland)

13:30-14:30.  SESSION:  Default Reasoning.

Chair: Randy Goebel (U.  Alberta)

A Characterization of Extensions of General Default Theory, Zhang
Mingyi (Guizhou Academy of Sciences)

What is Default Priority?, Craig Boutilier (UBC)

Possible Worlds Semantics for Default Logics  Philippe Besnard and
Torsten Schaub

(U. Western Ontario)

14:30-15:30.  SESSION:  Invited Speaker.

What Linguistics Can Contribute to AI, Veronica Dahl (SFU)

15:50-17:30.  SESSION:  Constraint-Based Reasoning.

Chair: Bill Havens (SFU)

Fast Solution of Large Interval Constraint Networks, Alexander
Reinefeld and Peter Ladkin

(U. Hamburg)

Ordering Heuristics for ARC Consistency Algorithms, Richard J Wallace
and Eugene C. Freuder (U. New Hampshire)

Extending PATR with Path Patterns and Constraints, Greg Sidebottom and
Fred Popowich (SFU)

Structure Identification in Relational Data, Rina Dechter and Judea
Pearl (UC Irvine)

Inference in Inheritance Networks, Using Propositional Logic and
Constraint Networks Techniques, Rachel Ben Eliyahu and Rina Dechter
(UCLA)

18:30-  Banquet.

                                             Friday, May 15, 1992

Artificial Intelligence '92 Technical Papers

08:50-10:30.  SESSION:  Knowledge Representation.

Chair: Jim Delgrande (SFU)

Decision-Theoretic Defaults David Poole (UBC)

Hierarchical Meta-Logics for Belief and Provability: How We Can Do
Without Modal Logics, Fausto Giunchiglia and Luciano Serafini (U.
Genoa)

Tractable Approximate Deduction Using Limited Vocabularies, Mukesh Dalal
(Rutgers U.) and David W.  Etherington (AT & T Bell Labs)

A Formal Analysis of Solution Caching, Vinay K. Chaudhri and Russell
Greiner (Siemens Corporate Research)

Reasoning About Action in First-Order Logic, Charles Elkan (UCSD)

10:50-11:50.  SESSION:  Invited Speaker.

AI and Massive Parallelism, David L.  Waltz (Thinking Machines)

13:30-14:50.  SESSION:  Learning.

Chair: Rob Holte (U. Ottawa)

Case-based Meta Learning:  Using a Dynamically Biased Version Space in
Sustained Learning, Jacky Bates and Bruce MacDonald (U. Calgary)

Learning Expertise from the Opposition:  The Role of the Trainer in a
Competitive Environment, Susan L.  Epstein (CUNY)

Training Networks of Value Units, Michael R. W. Dawson, Don P.
Schopflocher, James Kidd, and Kevin Shamanski (U.  Alberta)

Relevancy Knowledge in Analogical Reasoning, Ye Huang and Alison E.
Adam (U.  Manchester)

15:10-16:40.  SESSION: Panel:  An Interdisciplinary View of Constraint
Reasoning.

Chair: Veronica Dahl (SFU)

Participants: Veronica Dahl (SFU), Bill Havens (SFU), Maartin van Emden
(U.  Vic.), Pascal van Henternyck (Brown), Alan Mackworth (UBC), Greg
Sidebottom (SFU)

                                             Wednesday, May 13, 1992

Graphics Interface '92 Technical Papers

08:30-10:10.  SESSION:  Modelling And Rendering I.

Chair: John Amanatides ( York U.)

An implementation of multivariate B-spline surfaces over arbitrary
triangulations, Philip Fong and Hans-Peter Seidel (U.  Waterloo)

Interactive solid modeling using partitioning trees, Bruce Naylor (AT&T
Bell Labs)

Fast algorithms for rendering cubic curves, Benjamin Watson and Larry
F.  Hodges (Georgia Inst. of Tech.)

Parameterization in finite precision, Chanderjit L.  Bajaj and Andrew
V.  Royappa (Purdue U.)

10:40-11:55.  SESSION:  Program And Document Presentation.

Chair: John Amanatides ( York U.)

Hyper-rendering, Jergen Emhardt and Thomas Strothotte (Free U. of
Berlin)

Program auralization: Sound enhancements to the programming
environment, Christopher J. DiGiano and Ronald M. Baecker (U.  Toronto)

Viz: A framework for describing and implementing software visualization
systems, John Domingue, Blaine Price, and Marc Eisenstadt (Open
University)

13:30-14:30.  SESSION:  Invited Speaker.

Volume rendering using the Fourier projection-slice theorem R., Marc
Levoy (Stanford)

14:30-15:20.  SESSION:  Visualisation.

Chair: Mikio Shinya (NTT)

An extended cuberille model for identification and display of 3D
objects from 3D gray value data, Xiaoqing Qu and Wayne Davis (U.
Alberta)

Annotating the real world with knowledge-based graphics on a
see-through head-mounted display, Steven Feiner, Blair MacIntyre and
Doree Seligmann (Columbia U.)

15:50-17:05.  SESSION:  Anti-Aliasing, Sampling, And Images.

Chair: Mikio Shinya (NTT)

Algorithms for the detection and elimination of specular aliasing, John
Amanatides (York U.)

Hierarchical Poisson disk sampling distributions, Michael McCool and
Eugene Fiume

(U. Toronto)

Performing in-place affine transformations in constant space, Ken
Fishkin (Xerox PARC)

17:20-18:30.  CHCCS Meeting.

20:00-21:45.  Electronic Theatre.

                                             Thursday, May 14, 1992

Graphics Interface '92 Technical Papers

08:30-09:20.  SESSION:  Computer Supported Co-operative Work.

Chair: Mark Green (U.  Alberta)

Working together, virtually, Jin Li and Marilyn Mantei (U.  Toronto)

Telepresence: Integrating shared task and personal spaces, Bill Buxton
(U.  Toronto/Xerox PARC)

9:20-10:20.  SESSION: Invited Speaker.

CSCW - WCSC: Computer Supported Cooperative Work - Ways it Will Change
the Science of Computing, Marilyn Mantei (U.  Toronto)

10:50-12:05.  SESSION: Issues In Interaction.

Chair: Mark Green (U.  Alberta)

Movement time prediction in human-computer interfaces, I.  Scott
MacKenzie (U.  Toronto/Guelph)

ARCBALL: A user interface for specifying three-dimensional orientation
using a mouse, Ken Shoemake (Otter Enterprises)

Designing video annotation and analysis systems, Beverly L. Harrison
and Ronald M.  Baecker

(U. Toronto)

13:30-15:10.  SESSION: Ray Tracing.

Chair: Marceli Wein (NRC)

A data parallel algorithm for ray tracing of heterogeneous databases,
Peter Schroder and Steven M. Drucker (Thinking Machines)

Object space temporal coherence for ray tracing, David Jevans (Apple)

Ray tracing polygons using spatial subdivision, Andrew Woo (Alias
Research)

Parametric height field ray tracing, David W. Paglieroni and Sidney M.
Peterson (Loral Western Labs)

15:40-16:55.  SESSION: Image Representation and Stochastic Models.

Chair: Marceli Wein (NRC)

Partitioning tree based image representation and generation, Bruce
Naylor (AT&T Bell Labs)

Escape-time visualization method for language-restricted iterated
function systems, Przemyslaw Prusinkiewicz and Mark Hammel (U. Calgary)

The object instancing paradigm for linear fractal modeling, John C.
Hart (U.  Illinois, Chicago)

18:30-  Banquet.

                                             Friday, May 15, 1992

Graphics Interface '92 Technical Papers

08:55-10:10.  SESSION:  Modelling and Rendering II.

Chair: Brian Wyvill (U.  Calgary)

Algorithms for intersecting parametric and algebraic curves, Dinesh
Manocha and James Demmel (UC Berkeley)

An interval refinement technique for surface intersection, Michael
Gleicher (CMU) and Michael Kass (Apple)

Physically-based methods for polygonization of implicit surfaces Luiz
Henrique de Figueiredo, Jonas de Miranda Gomes (IMPA, Brasil), Demetri
Terzopoulos (U. Toronto), and Luiz Velho (U. Toronto/IMPA)

10:50-11:55.  SESSION:  Animation.

Chair: Brian Wyvill (U.  Calgary)

Matrix animation and polar decomposition, Ken Shoemake (Otter
Enterprises) and Tom Duff (AT&T Bell Labs)

Generating natural-looking motion for computer animation, Jessica K.
Hodgins, Paula K. Sweeney (IBM Yorktown), and David G.  Lawrence
(Stanford)

Beyond keyframing: An algorithmic approach to animation, A. James
Stewart (U. Toronto) and James F.  Cremer (Cornell U.)

13:30-14:30.  SESSION:  Invited Speaker.

A minimalist global user interface Rob Pike (AT&T Bell Labs)

14:30-15:20.  SESSION:  Environments and Applications.

Chair: Saul Greenberg (U.  Calgary)

A multi-layer graphic model for building interactive graphical
applications, Jean-Daniel Fekete (U. de Paris Sud)

A linear constraint technology for interactive graphic systems, Richard
Helm, Tien Huynh, Catherine Lazzez, and Kim Marriott (IBM Yorktown)

15:50-16:40.  SESSION:  Illumination.

Chair: Saul Greenberg (U.  Calgary)

Non-uniform patch luminance for global illumination, Buming Bian (U.
Texas, Austin), Norman Wittels (Worcester Polytechnic), and Donald S.
Fussell (U.  Texas, Austin)

A two-pass physics-based global lighting model, Kadi Bouatouch and
Pierre Tellier (IRISA)

                                             Wednesday, May 13, 1992

Vision Interface '92 Technical Papers

08:30-09:30.  SESSION:  Invited Speaker. Computer vision: attitudes,
barriers, counselling, Azriel Rosenfeld (U. Maryland)

09:30-10:20.  SESSION:  Texture Analysis.

Chair: James J. Little (UBC)

Hierarchical Maximum Entropy Partitioning of Visual Feature Frequency
Matrices for Texture Classification, D. K. Y. Chiu (U.  Guelph) and H.
C. Shen (U. Waterloo)

Characteristic Colors for Texture Image Analysis: A Parallel
Distributed Approach, J. Scharcanski, H.  C. Shen and A. P. Alves da
Silva (U. Waterloo)

10:50-12:05.  SESSION:  Segmentation And Representation.

Chair: James J. Little (UBC)

Realtime Image Segmentation with 2n-tree Classifiers, Byron Dom and
David Steele (IBM Almaden Research Center)

The Ensemble Representation, Yerucham Shapira (Ecole Polytechnique de
Montreal)

Extracting Polyhedral Models
>From A Range Image: A Hybrid
Approach, Kamal Gupta and Xiao Ming Zhu (SFU)

13:30-15:10.  SESSION:  Modelling And Estimation.

Chair: Rejean Plamondon (Ecole Polytechnique de Montreal)

Adaptive neural tree for pattern recognition, T. Li, Yuan Yan Tang, and
C. Y. Suen (Concordia U.)

Observing Agents Under Uncertainty, Tarek M. Sobh and Ruzena Bajcsy
(U.  Pennsylvania)

Premise-Based Estimation, Eyal Shavit (U. Toronto)

Discovering Regularities and Irregularities Based on The Distribution
of Probability Estimates, Abdul Rahim Halabieh and David K. Y.  Chiu
(U. Guelph)

15:40-17:20.  SESSION:  Character Recognition.

Chair: Rejean Plamondon (Ecole Polytechnique de Montreal)

Handprinted Character Recognition Using Relative Relation of Plural
Classification, Daisuke Nishiwaki, Jun Tsukumo and Tsutomu Temma (NEC)

Database Development by Learning from Samples for Handwritten Chinese
Character Recognition, Ying Ren and Siwei Lu (Memorial U. of
Newfoundland)

Recognizing Sequences of Letters in Mixed-Script Handwriting, Caroline
Barriere and Rejean Plamondon (Ecole Polytechnique de Montreal)

A Polygon Classification Approach on Remotely Sensed Image, Hazem
Raafat and Qinghan Xiao (U. Regina)

17:20-18:30.  CIPPRS Meeting.

20:00-21:45.  Electronic Theatre.

                                             Thursday, May 14, 1992

Vision Interface '92 Technical Papers

08:30-10:10.  SESSION: Motion and Stereo.

Chair: Ze-Nian Li (SFU)

Accurate Early Detection of Discontinuities, James J.  Little (UBC)

Use of Colour in Gradient-Based Estimation of Dense Two-Dimensional
Motion, Janusz Konrad (U. Quebec)

Models of Statistical Visual Motion Estimation, Minas E.  Spetsakis
(York U.)

Shape from Rotation using Stereo, Yizhi Edith Li and M.  R. M. Jenkin
(York U.)

10:40-11:55.  SESSION:  Tracking And Motion Estimation.

Chair: Ze-Nian Li (SFU)

Model-Guided Grouping for 3-D Motion Tracking, Xun Li and David G. Lowe
(UBC)

A Two-stage Robust Approach to Motion Estimation, Sun Xuening and Minas
E.  Spetsakis (York U.)

Acquiring object models using vision operations, Tilo Messer (FORWISS)

13:30-14:30.  SESSION:  Invited Speaker. Curve detection and shape
description, Steven W. Zucker (McGill U.)

14:30-15:20.  SESSION:  Architecture I.

Chair: Minas E. Spetsakis (York U.)

Fast Line Detection in a Hybrid Pyramid, Ze-Nian Li and Danpo Zhang
(SFU)

Efficient Image Processing Algorithms for Reconfigurable Meshes,
Stephan Olariu, James L. Schwing and Jingyuan Zhang (Old Dominion U.)

15:50-17:05.  SESSION:  Architecture II.

Chair: Minas E. Spetsakis (York U.)

SIMD Geometric Matching: From Poyhedra to Planar Curves, Martin Usoh
and Hilary Buxton (Queen Mary and Westfield College)

An Adaptive Parallel memory System for Image Processing, Zhiyong Liu,
Xiaobo Li and Jia-Huai You (U. Alberta)

Computing the Hough Transform on Reconfigurable Meshes, Stephan Olariu,
James L.  Schwing and Jingyuan Zhang (Old Dominion U.)

18:30-  Banquet.

                                             Friday, May 15, 1992

Vision Interface '92 Technical Papers

08:30-09:20.  SESSION:  Robotics And Motion Planning.

Chair: D. K. Y. Chiu (U.  Guelph)

A Dynamic Motion Planning Problem Using Alarms, Rajeev Sharma (U.
Maryland) and Anup Basu (U. Alberta)

Adaptive Logic Networks and Robot Control, Allen G.  Supynuk and
William W.  Armstrong (U. Alberta)

09:20-10:20.  SESSION:  Invited Speaker. Building robots, Alan
Mackworth (UBC)

10:50-12:05.  SESSION: Vision Systems.

Chair: D. K. Y. Chiu (U.  Guelph)

Object location using Proportions of the Direction of Intensity
Gradient (PRODIGY), Graham Robertson and Ken C.  Sharman (U.  Glasgow)

ARNIE P. - A Robot Golfing System Using Binocular Stereo Vision, Roger
W.  Webster and Yong Wei (Millersville U.)

Determining the Visible Sites Inside a Simple Polygon, Cao An Wang
(Memorial U.  of Newfoundland)

13:30-15:10.  SESSION:  Representation And Transformation.

Chair: Si-Wei Lu (Memorial U.  of Newfoundland)

Attitude Determination by Support Function and Curvature, Ying Li (UBC)

A Global 3D Interpolator for Large Voxel Datasets, H. H.  Atkinson,
Irene Gargantini and R. E. Webber (U. Western Ontario)

RP Transformation for pattern recognition, Yuan-Yan Tang and Ching Y.
Suen (Concordia U.)

Using Equivalent Pair Information for Image Component Labeling - An
Optimal Algorithm, Amelia F.  Lochovsky (Hong Kong U.)

15:40-16:55.  SESSION:  Boundary Detection.

Chair: Si-Wei Lu (Memorial U.  of Newfoundland)

Three Dimensional Border Identification, Xiaoqing Qu and Wayne Davis
(U. Alberta)

Zernike Moments-Based Subpixel Edge Detection, Sugata Ghosal and Rajiv
Mehrotra (U. Kentucky)

On Image Analysis Via Orthogonal Moments, Miroslaw Pawlak (U. Manitoba)