Nonlinear Classification Of Multispectral Imagery Using Representation-Based Classifiers

Keywords

Dimensionality expansion; Kernel method; Multispectral imagery; Nonlinear classification

Abstract

This paper investigates representation-based classification for multispectral imagery. Due to small spectral dimension, the performance of classification may be limited, and, in general, it is difficult to discriminate different classes with multispectral imagery. Nonlinear band generation method with explicit functions is proposed to use which can provide additional spectral information for multispectral image classification. Specifically, we propose the simple band ratio function, which can yield better performance than the nonlinear kernel method with implicit mapping function. Two representation-based classifiers-i.e., sparse representation classifier (SRC) and nearest regularized subspace (NRS) method-are evaluated on the nonlinearly generated datasets. Experimental results demonstrate that this dimensionality-expansion approach can outperform the traditional kernel method in terms of high classification accuracy and low computational cost when classifying multispectral imagery.

Publication Date

7-1-2017

Publication Title

Remote Sensing

Volume

9

Issue

7

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.3390/rs9070662

Socpus ID

85022319545 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85022319545

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