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MVA
2002
254views Computer Vision» more  MVA 2002»
13 years 9 months ago
Retinal Blood Vessel Extraction by Using Multi-resolution Matched Filtering and Directional Region Growing Segmentation
Anew method to extract retinal blood vessels from a colour fundus image is described. Digital colour h d u s images are contrast enhanced in order to obtain sharp edges. The green...
Mitsutoshi Himaga, David Usher, James F. Boyce
IR
2010
13 years 8 months ago
A general approximation framework for direct optimization of information retrieval measures
Recently direct optimization of information retrieval (IR) measures becomes a new trend in learning to rank. Several methods have been proposed and the effectiveness of them has ...
Tao Qin, Tie-Yan Liu, Hang Li
DCC
2011
IEEE
13 years 4 months ago
Directed graph representation of half-rate additive codes over GF(4)
We show that (n, 2n ) additive codes over GF(4) can be represented as directed graphs. This generalizes earlier results on self-dual additive codes over GF(4), which correspond to ...
Lars Eirik Danielsen, Matthew G. Parker
TIT
2010
98views Education» more  TIT 2010»
13 years 4 months ago
Pairwise intersession network coding on directed networks
When there exists only a single multicast session in a directed acyclic/cyclic network, the existence of a network coding solution is characterized by the classic min-cut/max-flow ...
Chih-Chun Wang, Ness B. Shroff
VISUALIZATION
1993
IEEE
14 years 1 months ago
Rapid Exploration of Curvilinear Grids Using Direct Volume Rendering
Fast techniques for direct volume rendering over curvilinear grids of hexahedral cells are developed. This type of 3D grid is common in computational uid dynamics and nite element...
Allen Van Gelder, Jane Wilhelms