CGL Meeting Agenda

January 24, 2001

Location:
DC1304
Time:
2:30 p.m.
Chair:
Bill Cowan (for Ian Bell) :-)

1. Adoption of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour this week:
TBD
Coffee hour next week:
TBD

3. Next meeting

Date:
Wednesday, January 31, 2001
Location:
DC1304
Time:
2:30 p.m.
Chair:

Ian Bell (for Bill Cowan) 
Technical presentation:

Jason Ang :-)

4. Forthcoming

Chair:
  1. Erik Demaine (February 7th) :-)
  2. Margaret Dulat (February 14th) :-)
  3. Roger Fernandes (February 21st) :-)


Tech Presenters:

  1. Ian Bell (February 7th) :-)
  2. Bill Cowan (February 14th) 
  3. Erik Demaine (February 21st) :-)

5. Technical Presentation

Presenter:


Erkan Akyuz :-)

Title:

Interactive Volume Rendering on Standard PC Graphics Hardware Using Multi-Textures and Multi-Stage Rasterization.
Abstract:

Interactive direct volume rendering has yet been restricted to high-end graphics workstations and special-purpose hardware, due to the large amount of trilinear interpolations, that are necessary to obtain high image quality. Implementations that use the 2D-texture capabilities of standard PC hardware, usually render object-aligned slices in order to substitute trilinear by bilinear interpolation. However the resulting images often contain visual artefacts caused by the lack of spatial interpolation. In this paper new rendering techniques are proposed that significantly improve both performance and image quality of the 2D-texture based approach. We will show how multi-texturing capabilities of modern consumer PC graphics boards are exploited to enable interactive high quality volume visualization on low-cost hardware. Furthermore we demonstrate how multi-stage rasterization hardware can be used to efficiently render shaded isosurfaces and to compute diffuse illumination for semi-transparent volume rendering at interactive frame rates.

Authors: C. Rezk-Salama, K. Engel, M. Bauer, G. Greiner, T. Ertl.

6. General Discussion Items

7. Action List

8. Director's Meeting

9. Seminars

Thursday, 25 January 2001, 4:30PM - CS Seminar, DC 1331
    F. Southey (CS): A novel local search method for integer programming problems
Friday, 26 January 2001,  3:30PM - C&O/Tutte Colloquium, MC 5158
    Prof. Carsten Thomassen (Technical University of Denmark): The cycle space and totally odd subdivision of K_4
Monday, 29 January 2001, 10:30AM - CS Seminar, DC 2577
    Tom Dean (Dept. Computer Science, Queen's University):   A Syntactic Theory of Software Architecture
Monday, 29 January 2001,  3:30PM - C&O/Cryptography Seminar, MC 5136
    Viktor Galliard (C&O): Pseudo-Telepathy and Coloring Graphs

10. Lab Cleanup