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CAGD
2010
102views more  CAGD 2010»
13 years 5 months ago
Nonnegativity preserving macro-element interpolation of scattered data
Abstract. Nonnegative bivariate interpolants to scattered data are constructed using some C1 macro-element spline spaces. The methods are local, and rely on adjusting gradients at ...
Larry L. Schumaker, Hendrik Speleers
WSCG
2004
164views more  WSCG 2004»
13 years 6 months ago
Constrained Visualization of 2D Positive Data using Modified Quadratic Shepard Method
This paper is about the visualization of positive data subject to positivity constraint. It presents an algorithm that produces a non-negative graph through scattered positive dat...
Muhammed Rafiq Asim, Ghulam Mustafa, Ken Brodlie
CGF
2005
133views more  CGF 2005»
13 years 5 months ago
Constrained Visualization Using the Shepard Interpolation Family
This paper discusses the problem of visualizing data where there are underlying constraints that must be preserved. For example, we may know that the data are inherently positive....
Ken W. Brodlie, Muhammed Rafiq Asim, Keith Unswort...
VISUALIZATION
1998
IEEE
13 years 9 months ago
Progressive tetrahedralizations
This paper describes some fundamental issues for robust implementations of progressively refined tetrahedralizations generated through sequences of edge collapses. We address the ...
Oliver G. Staadt, Markus H. Gross