Object-space point blending and splatting

ABSTRACT

We present a novel point-based rendering approach based on object-space point interpolation. We introduce the concept of a transformation-invariant covariance matrix of a set of points to efficiently determine splat sizes in a multiresolution hierarchy. We analyze continuous point interpolation in object-space, and define a new class of parametrized blending kernels to achieve smooth blending. Furthermore, we present a hardware accelerated rendering algorithm based on α-texture mapping and α-blending.

REFERENCES

• 1: Mario Botsch , Andreas Wiratanaya , Leif Kobbelt, Efficient high quality rendering of point sampled geometry, Proceedings of the 13th Eurographics workshop on Rendering, June 26-28, 2002, Pisa, Italy
• 2: M. Gross. Are points the better graphics primitives? Computer Graphics Forum 20(3), 2001. Plenary Talk Eurographics 2001.
• 3: L. Ren, H. Pfister, and M. Zwicker. Object space EWA surface splatting: A hardware accelerated approach to high quality point rendering. In Proceedings EUROGRAPHICS 2002, pages -, 2002. also in Computer Graphics Forum 21(3).
• 4: Szymon Rusinkiewicz , Marc Levoy, QSplat: a multiresolution point rendering system for large meshes, Proceedings of the 27th annual conference on Computer graphics and interactive techniques, p.343-352, July 2000 [doi>10.1145/344779.344940]
• 5: Matthias Zwicker , Hanspeter Pfister , Jeroen van Baar , Markus Gross, Surface splatting, Proceedings of the 28th annual conference on Computer graphics and interactive techniques, p.371-378, August 2001 [doi>10.1145/383259.383300]