Sciweavers

3377 search results - page 128 / 676
» Spatial computation
Sort
View
GIS
2006
ACM
14 years 10 months ago
A peer-to-peer spatial cloaking algorithm for anonymous location-based service
This paper tackles a major privacy threat in current location-based services where users have to report their exact locations to the database server in order to obtain their desir...
Chi-Yin Chow, Mohamed F. Mokbel, Xuan Liu
ICIP
2007
IEEE
15 years 4 months ago
Relative Position-Based Spatial Relationships using Mathematical Morphology
Spatial information is a crucial aspect of image understanding for modeling context as well as resolving the uncertainties caused by the ambiguities in low-level features. We desc...
Ramazan Gokberk Cinbis, Selim Aksoy
ICMCS
2007
IEEE
121views Multimedia» more  ICMCS 2007»
15 years 4 months ago
Adaptive Spatial and Transform Domain FGS Coding
In inter-picture coding, block-based frequency transform is usually carried out on the predicted errors for each interblock to remove the spatial correlation among them. However, ...
Li Zhang, Xiangyang Ji, Wen Gao, Debin Zhao
VLDB
1994
ACM
137views Database» more  VLDB 1994»
15 years 2 months ago
Performance of Data-Parallel Spatial Operations
The performance of data-parallel algorithms for spatial operations using data-parallel variants of the bucket PMR quadtree, R-tree, and R+-tree spatial data structures is compared...
Erik G. Hoel, Hanan Samet
BDA
2007
14 years 11 months ago
A Framework for Distributed Spatial Indexing in Shared-Nothing Architectures
The paper presents a complete framework for spatial indexing support in a distributed setting. We consider a shared-nothing environment where a set of servers provides independent...
Cédric du Mouza, Witold Litwin, Philippe Ri...