Title
Hyperspectral Anomaly Detection With Kernel Isolation Forest
Abstract
In this article, a novel hyperspectral anomaly detection method with kernel Isolation Forest (iForest) is proposed. The method is based on an assumption that anomalies rather than background can be more susceptible to isolation in the kernel space. Based on this idea, the proposed method detects anomalies as follows. First, the hyperspectral data are mapped into the kernel space, and the first <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula> principal components are used. Then, the isolation samples in the image are detected with the iForest constructed using randomly selected samples in the principal components. Finally, the initial anomaly detection map is iteratively refined with locally constructed iForest in connected regions with large areas. Experimental results on several real hyperspectral data sets demonstrate that the proposed method outperforms other state-of-the-art methods.
Year
DOI
Venue
2020
10.1109/TGRS.2019.2936308
IEEE Transactions on Geoscience and Remote Sensing
Keywords
Field
DocType
Kernel,Anomaly detection,Hyperspectral imaging,Detectors,Vegetation,Forestry
Kernel (linear algebra),Anomaly detection,Remote sensing,Hyperspectral imaging,Mathematics
Journal
Volume
Issue
ISSN
58
1
0196-2892
Citations 
PageRank 
References 
6
0.40
0
Authors
4
Name
Order
Citations
PageRank
Shutao Li119116.15
Kunzhong Zhang271.09
Puhong Duan360.74
Xudong Kang4607.92