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Accession Number ADA580366
Title Performance Comparison of Feature Extraction Algorithms for Target Detection and Classification.
Publication Date 2013
Media Count 13p
Personal Author A. Ray N. M. Nasrabadi S. Bahrampour S. Sarka T. Damarla
Abstract This paper addresses the problem of target detection and classification, where the performance is often limited due to high rates of false alarm and classification error, possibly because of inadequacies in the underlying algorithms of feature extraction from sensory data and subsequent pattern classification. In this paper, a recently reported feature extraction algorithm, symbolic dynamic filtering (SDF), is investigated for target detection and classification by using unmanned ground sensors (UGS). In SDF, sensor time series data are first symbolized to construct probabilistic finite state automata (PFSA) that, in turn, generate low-dimensional feature vectors. In this paper, the performance of SDF is compared with that of two commonly used feature extractors, namely Cepstrum and principal component analysis (PCA), for target detection and classification. Three different pattern classifiers have been employed to compare the performance of the three feature extractors for target detection and human/animal classification by UGS systems based on two sets of field data that consist of passive infrared (PIR) and seismic sensors. The results show consistently superior performance of SDF-based feature extraction over Cepstrum-based and PCA-based feature extraction in terms of successful detection, false alarm, and misclassification rates.
Keywords Algorithms
Border control
Feature extraction
Pattern classification
Target detection
Unattended ground sensors

Source Agency Non Paid ADAS
NTIS Subject Category 72B - Algebra, Analysis, Geometry, & Mathematical Logic
Corporate Author Pennsylvania State Univ., University Park. Dept. of Mechanical Engineering.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1325
Contract Number W911NF-07-1-0376

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