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CGF
2008
134views more  CGF 2008»
15 years 2 months ago
Sample Based Visibility for Soft Shadows using Alias-free Shadow Maps
This paper introduces an accurate real-time soft shadow algorithm that uses sample based visibility. Initially, we present a GPU-based alias-free hard shadow map algorithm that ty...
Erik Sintorn, Elmar Eisemann, Ulf Assarsson
CAD
2006
Springer
15 years 1 months ago
A rational extension of Piegl's method for filling n-sided holes
N-sided hole filling plays an important role in vertex blending. To deal with the case that the corner is surrounded by rational surfaces (i.e. NURBS surfaces), an algorithm to fi...
Yi-Jun Yang, Jun-Hai Yong, Hui Zhang, Jean-Claude ...
CGF
2005
149views more  CGF 2005»
15 years 1 months ago
Real-Time Ray-Casting and Advanced Shading of Discrete Isosurfaces
This paper presents a real-time rendering pipeline for implicit surfaces defined by a regular volumetric grid of samples. We use a ray-casting approach on current graphics hardwar...
Markus Hadwiger, Christian Sigg, Henning Scharsach...
CAGD
2004
141views more  CAGD 2004»
15 years 1 months ago
Almost rotation-minimizing rational parametrization of canal surfaces
Almost rotation minimizing parametrization of the canal surface is given. The basic building block of our approach is the curve approximation scheme that enables us to construct a...
Hyeong In Choi, Song-Hwa Kwon, Nam-Sook Wee
DRR
2009
14 years 11 months ago
Retrieval of historical documents by word spotting
The implementation of word spotting is not an easy procedure and it gets even worse in the case of historical documents since it requires character recognition and indexing of the...
Nikoleta Doulgeri, Ergina Kavallieratou