Report on the IEEE Visualization `94 Conference
17- 21 October 1994
Sheraton Premiere at Tysons Corner,
Washington DC, USA.
Introduction
Visualization `94 is the fifth conference in a series devoted to data
visualization. The conference is sponsored by the IEEE Technical Committee
on Computer Graphics in cooperation with ACM SIGGRAPH. This year the
conference attracted over 450 international visualization users and researchers.
The format of the conference involved a number of tutorials, panels, case
studies, demonstrations and over 40 refereed technical papers. The proceedings
from the conference consist of the technical papers and case studies
(450 pages including 45 pages of colour plates), two video tapes with sequences
to supplement the papers and a CD which contains the conference proceedings in
AdobeAcrobat format. More details on how to obtain these can be found at the end
of this article.
Tutorials
Over the first three days the conference held a number of tutorials which
included Volume visualization algorithms and applications, Multi-dimensional
geometry and multi-variate problems and Analysis and processing of
environmental datasets. The volume visualization tutorial was presented by
three prominent researchers in this field over the past fifteen years:
Arie Kaufman, Bill Lorenson and Roni Yagel. The tutorial covered basic
nomenclature, surface extraction, volume shading and synthesis with the
tutorial notes providing a good source of references for researchers relatively
new to this field. The tutorial covering multi-variate problems described
a number of techniques and very clearly illustrated their use with a number
of real world applications. These included the analysis of complex systems
such as gold prices over the previous seven years with respect to eight other
stock market variables, disease spread throughout honey bees in Switzerland,
a model of the Peruvian economy and conflict resolution for air traffic controllers.
Keynote Address
The co-chair Nahum Geshon opened the main conference and welcomed participants.
This year's opening address was given by Gregory C Simon, the Chief Domestic
Policy Advisor to Vice President Al Gore. Histalk was entitled
"The Idea of Information: The Gene in the Machine" and was concerned with
how computer systems and other forms of digital storage are converging with
natural information systems such as DNA genetic encoding. He concluded by
suggesting in the future biological and machine-like principles will be used
together to optimize new, complex artificial and natural organisms. The perfectly
executed talk made use of a plethora of media presentation techniques including
mosaics of still images, computer animations, live video sequences and carefully
chosen audio clips bound together using the Silicon Graphics tool Showcase.
During questions Mr Simon also revealed that in addition to email access
to the Whitehouse they would also be accessible via the World Wide Web
(http://www.whitehouse.gov)
and would use this to disseminate certain policy
documents to the community.
Honorary Chair Address
The honorary chair address was presented by Professor Andries van Dam, Brown University,
US, titled "Interactive Visualization via 3D User Interfaces". This superb presentation
addressed some of the deficiencies in traditional 2D widgets for interacting with
visualization environments and use in virtual reality. The talk covered direct
manipulation and 3D widgets for control of 3D interfaces and previewed some work
that had been undertaken to develop a tool box that allowed the creation and definition
of 3D widgets and their associated interaction. Some of their work, sponsored by the
NASA Ames Virtual Wind Tunnel project, illustrated these techniques in use. This also
included a method of using a computer representation of smoke rings to visualize flow fields.
Best Paper and Case Study Award
The prize for the best paper was shared this year between "Visualizing Flow over Curvilinear
Grid Surfaces using Line Integral Convolution", L K Forsell, NASA Ames Research Center
and "The Topology of Symmetric, Second-Order Tensor Fields", T Delmarcelle and L Hesselink,
Stanford University. The first paper extended the Line Integral Convolution (LIC)
technique for imaging and animating vector fields which was first introduced by
Cabral and Leedom. The extensions were for flow over parametric surfaces specifically
curvilinear grids, to cater for misleading aspects when animating over curvilinear grids
and a technique to visualize vector magnitude as well as direction. The second paper
presented a study of symmetric, second-order tensor fields with the goal of representing
their structure by extending ideas in vector field topology. This involved identifying
two forms of degenerate points that could be combined to form more familiar singularities
such as saddle, nodes, centres or foci. The paper also presented a topological rule that
extended to tensor fields the Poincare-Hopf theorem for vector fields.
The best case study award was given to "Visualization of 3D Ultrasonic Data"
G Sakas, L A Schreyer, M Grimm, Fraunhofer Institute for Computer Graphics,
Darmstadt, Germany. Ultrasound is a popular non-invasive, non-radioactive
tomographic technique but producing 3D representations from the data is not
particularly easy due to the noisy, fuzzy nature of the ultrasound images.
The paper detailed a number of filtering techniques that have been used to
improve the data along with some semi-automatic segmentation tools to isolate
interesting features from the images. The study also presented their improved
surface extraction procedures to allow high quality images to be produced in a
few seconds on a standard workstation thus making its use suitable for routine
clinical applications.
Further information
The Visualization `94 proceedings are referenced by the following numbers:
IEEE Computer Society Press Order Number 6627-02
IEEE Catalogue Number 94CH35707
ISBN 0-8186-6627-7
ISSN 1070-2385
Additional copies of the conferences proceedings can be ordered from the
following address:
IEEE Computer Society Press, Customer Service Center
10662 Los Vaqueros Circle, PO Box 3014
Los Alamitos, CA 90720-1264, USA
Tel: +1 714 821 8380
Fax:+1 714 821 4641
cs.books@computer.org
Call for Participation for Visualization `95
The conference dates for next year are the 30 October - 3 November 1995,
Atlanta, US. If you are interested in submitting a paper, case study, panel,
tutorial or mini-workshop proposal then please note that the deadline in most
cases is the 31 March 1995. For more information on the conference next year
please contact either of the co-chairs:
Bill Ribarsky, Conference Co-chair
Tel: +1 404 894 6148
bill.ribarsky@oit.gatech.edu
Lloyd Trenish, Program Co-chair
Tel: +1 914 784 5038
lloydt@watson.ibm.com
Steve Larkin
AGOCG, Visualization Support Officer
Computer Graphics Unit, Manchester Computing Centre
University of Manchester. Manchester M13 9PL
Tel: +44 61 275 6095
Fax: +44 61 275 6040
s.larkin@mcc.ac.uk