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WACV
2012
IEEE
14 years 7 days ago
PTZ camera network calibration from moving people in sports broadcasts
In sports broadcasts, networks consisting of pan-tiltzoom (PTZ) cameras usually exhibit very wide baselines, making standard matching techniques for camera calibration very hard t...
Jens Puwein, Remo Ziegler, Luca Ballan, Marc Polle...
IDEAS
2006
IEEE
146views Database» more  IDEAS 2006»
15 years 10 months ago
Trajectory Similarity Search in Spatial Networks
In several applications, data objects are assumed to move on predefined spatial networks such as road segments, railways, invisible air routes. Moving objects may exhibit similar...
Eleftherios Tiakas, Apostolos N. Papadopoulos, Ale...
WSDM
2010
ACM
199views Data Mining» more  WSDM 2010»
16 years 2 months ago
A Sketch-Based Distance Oracle for Web-Scale Graphs
We study the fundamental problem of computing distances between nodes in large graphs such as the web graph and social networks. Our objective is to be able to answer distance que...
Atish Das Sarma, Sreenivas Gollapudi, Marc Najork,...
ICDE
2010
IEEE
249views Database» more  ICDE 2010»
15 years 11 months ago
PARINET: A tunable access method for in-network trajectories
— In this paper we propose PARINET, a new access method to efficiently retrieve the trajectories of objects moving in networks. The structure of PARINET is based on a combination...
Iulian Sandu Popa, Karine Zeitouni, Vincent Oria, ...
FAST
2010
15 years 7 months ago
Tracking Back References in a Write-Anywhere File System
Many file systems reorganize data on disk, for example to defragment storage, shrink volumes, or migrate data between different classes of storage. Advanced file system features s...
Peter Macko, Margo I. Seltzer, Keith A. Smith