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16 September 2003 Adaptive target detection in FLIR imagery using the eigenspace separation transform and principal component analysis
S. Susan Young, Heesung Kwon, Sandor Z. Der, Nasser M. Nasrabadi
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Proceedings Volume 5094, Automatic Target Recognition XIII; (2003) https://doi.org/10.1117/12.487625
Event: AeroSense 2003, 2003, Orlando, Florida, United States
Abstract
In this paper, an adaptive target detection algorithm for FLIR imagery is proposed that is based on measuring differences between structural information within a target and its surrounding background. At each pixel in the image a dual window is opened where the inner window (inner image vector) represents a possible target signature and the outer window (consisting of a number of outer image vectors) represents the surrounding scene. These image vectors are preprocessed by two directional highpass filters to obtain the corresponding image edge vectors. The target detection problem is formulated as a statistical hypotheses testing problem by mapping these image edge vectors into two transformations, P1 and P2, via Eigenspace Separation Transform (EST) and Principal Component Analysis (PCA). The first transformation P1 is a function of the inner image edge vector. The second transformation P2 is a function of both the inner and outer image edge vectors. For the hypothesis H1 (target): the difference of the two functions is small. For the hypothesis H0 (clutter): the difference of the two functions is large. Results of testing the proposed target detection algorithm on two large FLIR image databases are presented.
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S. Susan Young, Heesung Kwon, Sandor Z. Der, and Nasser M. Nasrabadi "Adaptive target detection in FLIR imagery using the eigenspace separation transform and principal component analysis", Proc. SPIE 5094, Automatic Target Recognition XIII, (16 September 2003); https://doi.org/10.1117/12.487625
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KEYWORDS
Principal component analysis
Detection and tracking algorithms
Target detection
Forward looking infrared
Databases
Image filtering
Image processing
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