DocumentCode :
1011522
Title :
Directional Filtering for Sequential Image Analysis
Author :
Vihonen, Juho ; Jylhä, Juha ; Ala-Kleemola, Timo ; Ruotsalainen, Marja ; Kauppila, Jarmo ; Huotilainen, Tommi ; Rauhamaa, Juhani ; Visa, Ari
Author_Institution :
Inst. of Signal Process., Tampere Univ. of Technol., Tampere
Volume :
15
fYear :
2008
fDate :
6/30/1905 12:00:00 AM
Firstpage :
902
Lastpage :
905
Abstract :
Image sequences produced by, e.g., electro-optical sensors are being used increasingly for continuous quality monitoring and surveillance. This letter considers the important problem of multiframe change point detection of signals with unknown dynamics. We propose a new CUSUM-based (cumulative SUM) detector for detecting noise-obscured signals in a sequence of frames. Our sequential detector adopts directional filtering, a search philosophy of interesting pixels, of state-of-the-art detector that employs dynamic programming (DP) for so-called track-before-detect (TBD) processing. In case of a persistent change, a detailed comparison reveals our CUSUM-based detector superior to the DP-based TBD detector.
Keywords :
dynamic programming; filtering theory; image sequences; signal detection; video surveillance; CUSUM-based detector; continuous quality monitoring; directional filtering; dynamic programming; electro-optical sensor; multiframe change point detection; noise-obscured signal detection; sequential image analysis; state-of-the-art detector; surveillance; track-before-detect processing; Detectors; Electrooptic devices; Filtering; Image analysis; Image sensors; Image sequence analysis; Image sequences; Monitoring; Signal detection; Surveillance; Dynamic programming; image analysis; sequential detection;
fLanguage :
English
Journal_Title :
Signal Processing Letters, IEEE
Publisher :
ieee
ISSN :
1070-9908
Type :
jour
DOI :
10.1109/LSP.2008.2007616
Filename :
4691057
Link To Document :
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