Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Ray tracing point set surfaces
 Kim, M.S. ; Institute of Electrical and Electronics Engineers IEEE; Korea Computer Graphics Society: Shape modeling international, SMI 2003. Proceedings : 12  15 May 2003, Seoul, Korea Los Alamitos, Calif.: IEEE Computer Society, 2003 ISBN: 0769519091 pp.272279 
 International Conference on Shape Modeling and Applications (SMI) <5, 2003, Seoul> 

 English 
 Conference Paper 
 Fraunhofer IGD () 
 ray tracing; point sampled geometry; point set surface 
Abstract
Point set surfaces (PSS) are a smooth manifold surface approximation from a set of sample points. The surface definition is based on a projection operation that constructs local polynomial approximations and respects a minimum feature size. We present techniques for ray tracing PSSs. For the computation of raysurface intersection the properties of the projection operation are exploited: The surface is enclosed by a union of minimum feature size spheres. A ray is intersected with the spheres first and inside the spheres with local polynomial approximations. Our results show that 23 projections are sufficient to accurately intersect a ray with the surface.