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CORR
2008
Springer
133views Education» more  CORR 2008»
14 years 11 months ago
Approximation Algorithms for Shortest Descending Paths in Terrains
A path from s to t on a polyhedral terrain is descending if the height of a point p never increases while we move p along the path from s to t. No efficient algorithm is known to ...
Mustaq Ahmed, Sandip Das, Sachin Lodha, Anna Lubiw...
CORR
2007
Springer
143views Education» more  CORR 2007»
14 years 11 months ago
An Approximation Algorithm for Shortest Descending Paths
A path from s to t on a polyhedral terrain is descending if the height of a point p never increases while we move p along the path from s to t. No efficient algorithm is known to ...
Mustaq Ahmed, Anna Lubiw
JCT
2011
86views more  JCT 2011»
14 years 6 months ago
Descendant-homogeneous digraphs
The descendant set desc(α) of a vertex α in a digraph D is the set of vertices which can be reached by a directed path from α. A subdigraph of D is finitely generated if it is...
Daniela Amato, John K. Truss
ICPR
2006
IEEE
16 years 23 days ago
Camera Text Recognition based on Perspective Invariants
As camera resolution increases, high-speed non-contact text capture through a digital camera is opening up a new channel for document capture and understanding. Unfortunately, per...
Chew Lim Tan, Shijian Lu
DAM
2010
101views more  DAM 2010»
14 years 11 months ago
On the distribution of distances between specified nodes in increasing trees
We study the quantity distance between node j and node n in a random tree of size n for increasing tree families. We give closed formul
Markus Kuba, Alois Panholzer