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Anisotropic Point Set Surfaces
Author(s) -
Adamson A.,
Alexa M.
Publication year - 2006
Publication title -
computer graphics forum
Language(s) - English
Resource type - Book series
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
ISBN - 1-59593-288-7
DOI - 10.1111/j.1467-8659.2006.00994.x
Subject(s) - principal curvature , point (geometry) , surface (topology) , weighting , set (abstract data type) , mathematics , representation (politics) , anisotropy , sample (material) , scale (ratio) , ellipsoid , space (punctuation) , geometry , computer science , curvature , mean curvature , optics , physics , quantum mechanics , astronomy , politics , acoustics , political science , law , thermodynamics , programming language , operating system
Point Set Surfaces define smooth surfaces from regular samples based on weighted averaging of the points. Because weighting is done based on a spatial scale parameter, point set surfaces apply basically only to regular samples. We suggest to attach individual weight functions to each sample rather than to the location in space. This extends Point Set Surfaces to irregular settings, including anisotropic sampling adjusting to the principal curvatures of the surface. In particular, we describe how to represent surfaces with ellipsoidal weight functions per sample. Details of deriving such a representation from typical inputs and computing points on the surface are discussed.