Interactive volume 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 artifacts caused by the lack of spatial interpolation. In this paper we propose new rendering techniques that significantly improve both performance and image quality of the 2D-texture based approach. We will show how in ulti-texturing capabilitiesof modern consumer PC graphboards are exploited to enable in teractive 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.

REFERENCES

• 1: Martin Brady , Kenneth Jung , H. T. Nguyen , Thinh Nguyen, Two-phase perspective ray casting for interactive volume navigation, Proceedings of the 8th conference on Visualization '97, p.183-ff., October 18-24, 1997, Phoenix, Arizona, United States
• 2: Brian Cabral , Nancy Cam , Jim Foran, Accelerated volume rendering and tomographic reconstruction using texture mapping hardware, Proceedings of the 1994 symposium on Volume visualization, p.91-98, October 17-18, 1994, Tysons Corner, Virginia, United States [doi>10.1145/197938.197972]
• 3: Frank Dachille , Kevin Kreeger , Baoquan Chen , Ingmar Bitter , Arie Kaufman, High-quality volume rendering using texture mapping hardware, Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware, p.69-ff., August 31-September 01, 1998, Lisbon, Portugal [doi>10.1145/285305.285315]
• 4: G. Eckel. OpenGL Volumizer Programmer's Guide. SGI Developer Bookshelf, 1998.
• 5: Klaus Engel , Rüdiger Westermann , Thomas Ertl, Isosurface extraction techniques for Web-based volume visualization, Proceedings of the conference on Visualization '99: celebrating ten years, p.139-146, October 1999, San Francisco, California, United States
• 6: James D. Foley , Andries van Dam , Steven K. Feiner , John F. Hughes, Computer graphics: principles and practice (2nd ed.), Addison-Wesley Longman Publishing Co., Inc., Boston, MA, 1990
• 7: P. Lacroute and M. Levoy. Fast Volume Rendering Using a Shear-Warp Factorization of the Viewing Transform. Comp. Graphics, 28(4), 1994.
• 8: William E. Lorensen , Harvey E. Cline, Marching cubes: A high resolution 3D surface construction algorithm, ACM SIGGRAPH Computer Graphics, v.21 n.4, p.163-169, July 1987
• 9: Michael Meiβner , Ulrich Hoffmann , Wolfgang Straβer, Enabling Classification and Shading for 3D Texture Mapping Based Volume Rendering, Proceedings of the 10th IEEE Visualization 1999 Conference (VIS '99), October 25-28, 1999
• 10: K. Mueller, N. Shareef, J. Huang, and Craws. R. IBR- Assisted Volume Rendering. In Visualization 1999 Late Breaking Hot Topics, 1999.
• 11: Hanspeter Pfister , Michael Cox , Peter N. Glaskowsky , Bill Lorensen , Richard Greco, Why the PC will be the most pervasive visualization platform in 2001 (panel session), Proceedings of the conference on Visualization '99: celebrating ten years, p.481-483, October 1999, San Francisco, California, United States
• 12: J. Spitzer. GeForce 256 and RIVA TNT Combiners. http://www.nvidia.com/Developer.
• 13: Rüdiger Westermann , Thomas Ertl, Efficiently using graphics hardware in volume rendering applications, Proceedings of the 25th annual conference on Computer graphics and interactive techniques, p.169-177, July 1998 [doi>10.1145/280814.280860]

INDEX TERMS

Primary Classification:
  I. Computing Methodologies
  I.3 COMPUTER GRAPHICS
      I.3.5 Computational Geometry and Object Modeling
          Subjects: Curve, surface, solid, and object representations

Additional Classification:
  G. Mathematics of Computing
  G.1 NUMERICAL ANALYSIS
      G.1.1 Interpolation
          Subjects: Interpolation formulas

  I. Computing Methodologies
  I.3 COMPUTER GRAPHICS
      I.3.1 Hardware architecture
          Subjects: Raster display devices
      I.3.7 Three-Dimensional Graphics and Realism
          Subjects: Color, shading, shadowing, and texture

General Terms:
Design, Measurement, Performance, Theory

Keywords:
PC hardware, multi-textures, rasterization, volume rendering