Meeting Agenda

January 31, 2001

Location:

*** CGL ***

Time:

2:30 p.m.

Chair:

Ian Bell (for Bill Cowan) 

1. Adoption of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour this week:

Celine

Coffee hour next week:

Gladimir

3. Next meeting

Date:

Wednesday, February 7, 2001

Location:

DC1304

Time:

2:30 p.m.

Chair:

Erik Demaine 

Technical presentation:

Jason Ang 

4. Forthcoming

Chair:

1. Margaret Dulat (February 14th) 
2. Roger Fernandes (February 21st) 
3. Patrick Gilhuly (February 28th) 

Tech Presenters:

1. Ian Bell (February 14th) 
2. Bill Cowan (February 21st) 
3. Erik Demaine (February 28th) 

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

• New light bulbs for the lab.
• Celine has placed Ravin Balakrishnan's (faculty applicant to CGL) papers on the coffee hour table for those interested. She would like to have them back when you're done reading.

8. Director's Meeting

9. Seminars

Thursday, 1 February 2001, 10:30AM - CS Recruiting Talk, DC 2577

    Ravin Balakrishnan: Bimanual and multi degree-of-freedom interaction for computer graphics

Friday, 2 February 2001, 2:30 PM - Systems Design, HH 373

    Carolyn MacGregor: Cognitive Issues with Interactive Technology: Experiences in the Use-IT Lab

Friday, 2 February 2001, 3:30 PM - C&O Tutte Colloquium, MC 5158

    Prof. Michele Mosca: Quantum Computer Algorithms

10. Lab Cleanup