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» Approximate Objects and Approximate Theories
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CVPR
2004
IEEE
16 years 8 months ago
Shaping Receptive Fields for Affine Invariance
The Gaussian kernel has played a central role in multi-scale methods for feature extraction and matching. In this paper, a method for shaping the filter using the local image stru...
S. Ravela
ICIP
1997
IEEE
16 years 8 months ago
A Differential Code for Shape Representation in Image Database Applications
A new method termed the vertex representation is presented for approximating the shapes of objects of arbitrary dimensionality d (e.g., 20, 30, etc.) with orthogonal (d - 1)-dimen...
Claudio Esperança, Hanan Samet
ICIP
1997
IEEE
16 years 8 months ago
An Efficient Boundary Encoding Scheme which is Optimal in the Rate-Distortion Sense
In this paper, we present a fast and optimal method for the lossy encoding of object boundaries which are given as 8-connect chain codes. We approximate the boundary by a polygon ...
Fabian W. Meier, Guido M. Schuster, Aggelos K. Kat...
ICDE
2008
IEEE
190views Database» more  ICDE 2008»
16 years 8 months ago
Efficient Query Processing in Large Traffic Networks
Abstract-- We present an original graph embedding to speedup distance-range and k-nearest neighbor queries on static and/or dynamic objects located on a (weighted) graph. Our metho...
Hans-Peter Kriegel, Matthias Renz, Peer Kröge...
ICALP
2009
Springer
16 years 6 months ago
Improved Bounds for Flow Shop Scheduling
We resolve an open question raised by Feige & Scheideler by showing that the best known approximation algorithm for flow shops is essentially tight with respect to the used low...
Monaldo Mastrolilli, Ola Svensson