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85
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RT
1995
Springer
15 years 5 months ago
Comparing Real and Synthetic Images: Some Ideas about Metrics
This paper explores numerical techniques for comparing real and synthetic luminance images. We introduce components of a perceptually based metric using ideas from the image compre...
Holly E. Rushmeier, Gregory J. Ward, Christine D. ...
128
Voted
CCCG
2010
15 years 3 months ago
Some properties of higher order delaunay and gabriel graphs
We consider two classes of higher order proximity graphs defined on a set of points in the plane, namely, the k-Delaunay graph and the k-Gabriel graph. We give bounds on the follo...
Prosenjit Bose, Sébastien Collette, Ferran ...
99
Voted
EJC
2010
15 years 1 months ago
Inversion of some series of free quasi-symmetric functions
We give a combinatorial formula for the inverses of the alternating sums of free quasi-symmetric functions of the form F(I) where I runs over compositions with parts in a prescribe...
Florent Hivert, Jean-Christophe Novelli, Jean-Yves...
122
Voted
JAPLL
2006
87views more  JAPLL 2006»
15 years 1 months ago
Is ZF a hack?: Comparing the complexity of some (formalist interpretations of) foundational systems for mathematics
This paper presents Automath encodings (which also are valid in LF/P) of various kinds of foundations of mathematics. Then it compares these encodings according to their size, to f...
Freek Wiedijk
ENTCS
2002
80views more  ENTCS 2002»
15 years 1 months ago
Some Co-Birkhoff Type Theorems
We consider the dual of Theorem 1 from [33], relating closure conditions on subcategories with projectivity classes for collections of discrete cocones. We extend these results by...
Jesse Hughes