DocumentCode :
1967795
Title :
Sensor Localization and Camera Calibration in Distributed Camera Sensor Networks
Author :
Barton-Sweeney, Andrew ; Lymberopoulos, Dimitrios ; Savvides, Andreas
Author_Institution :
Yale Univ. New Haven, New Haven
fYear :
2006
fDate :
1-5 Oct. 2006
Firstpage :
1
Lastpage :
10
Abstract :
Camera sensors constitute an information rich sensing modality with many potential applications in sensor networks. Their effectiveness in a sensor network setting however greatly relies on their ability to calibrate with respect to each other, and other sensors in the field. This paper examines node localization and camera calibration using the shared field of view of camera pairs. Using a new distributed camera sensor network we compare two approaches from computer vision and propose an algorithm that combines a sparse set of distance measurements with image information to accurately localize nodes in 3D. Our algorithms are evaluated using a network of iMote2 nodes equipped with COTS camera modules. The sensor nodes identify themselves to cameras using modulated LED emissions. Our indoor experiments yielded a 2-7cm error in a 6x6m room. Our outdoor experiments in a 30x30m field resulted in errors 20-80cm, depending on the method used.
Keywords :
CMOS image sensors; cameras; computer vision; camera calibration; computer vision; distributed camera sensor networks; image information; node localization; sensor localization; Biosensors; Calibration; Chemical sensors; Distance measurement; Image sensors; Intelligent sensors; Middleware; Sensor phenomena and characterization; Smart cameras; Wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Broadband Communications, Networks and Systems, 2006. BROADNETS 2006. 3rd International Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-0425-4
Electronic_ISBN :
978-1-4244-0425-4
Type :
conf
DOI :
10.1109/BROADNETS.2006.4374301
Filename :
4374301
Link To Document :
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