986 search results - page 79 / 198 » Efficient Processing of the Cube Operator |
ICIP
2009
IEEE
14 years 7 months ago
2009
IEEE
We offer, in this paper, a new method to segment text in natural scenes. This method is based on the use of a morphological operator: the Toggle Mapping. The efficiency of the met...
EDBT
2006
ACM
15 years 10 months ago
2006
ACM
Abstract. Many different index structures have been proposed for spatial databases to support efficient query processing. However, most of these index structures suffer from an exp...
ICIP
1998
IEEE
15 years 11 months ago
1998
IEEE
In this paper we present a framework combining differential geometry and scale-space to show that local geometric invariants of image contours such as tangent, curvature and deriv...
SSD
2001
Springer
15 years 2 months ago
2001
Springer
Several studies have focused on the efficient processing of simple spatial query types such as selections and spatial joins. Little work, however, has been done towards the optimiz...
VLDB
1990
ACM
15 years 2 months ago
1990
ACM
In this paper, we describe a new indexing technique, the time indez, for improving the performance of certain classes of temporal queries. The time index can be used to retrieve v...