PRL
2007
13 years 4 months ago
2007
Securing biometrics databases from being compromised is one of the most important challenges that must be overcome in order to demonstrate the viability of biometrics based authen...
JMIV
1998
13 years 4 months ago
1998
Singular points of scalar images in any dimensions are classified by a topological number. This number takes integer values and can efficiently be computed as a surface integral ...
COMGEO
2006
ACM
13 years 4 months ago
2006
ACM
We present an approach for the exact and efficient computation of a cell in an arrangement of quadric surfaces. All calculations are based on exact rational algebraic methods and ...
CAGD
2008
13 years 4 months ago
2008
We describe a new subdivision method to efficiently compute the topology and the arrangement of implicit planar curves. We emphasize that the output topology and arrangement are g...
VIP
2001
13 years 5 months ago
2001
In this paper, we introduce a new approach to fingerprint classification based on both singularities and traced pseudoridge analysis. Since noise exists in most of the fingerprint...
CGI
2004
IEEE
13 years 8 months ago
2004
IEEE
We present a new algorithm for computing a polygonal surface from a union of balls. The method computes and connects the singular points of a given union of balls in an efficient ...
ICB
2007
Springer
13 years 10 months ago
2007
Springer
Abstract. As an important feature of fingerprints, singular points (includingcores and deltas) not only represent the local ridge pattern characteristics, but also determine the to...
ICPR
2006
IEEE
14 years 5 months ago
2006
IEEE
Automatic localization of singular points in fingerprints is of critical importance in many algorithms. Existing methods of detecting singular points often require tedious ad-hoc ...
CVPR
2009
IEEE
14 years 11 months ago
2009
IEEE
Oriented patterns, e.g. fingerprints, consist of smoothly
varying flow-like patterns, together with important singular
points (i.e. cores and deltas) where the orientation change...