Endmember extraction by exemplar finder

Yu Guo, Junbin Gao, Yanfeng Sun

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We propose a novel method called exemplar finder (EF) for spectraldata endmember extraction problem, which is also known as blind unmixing inremote sensing community. Exemplar finder is based on data self reconstructionassuming that the bases (endmembers) generating the data exist in the givendata set. The bases selection is fulfilled by minimising a l2=l1 norm on the reconstructioncoefficients, which eliminates or suppresses irrelevant weights fromnon-exemplar samples. As a result, it is able to identify endmembers automatically.This algorithm can be further extended, for example, using different errorstructures and including rank operator. We test this method on semi-simulatedhyperspectral data where ground truth is available. Exemplar finder successfullyidentifies endmembers, which is far better than some existing methods, especiallywhen signal to noise ratio is high.
    Original languageEnglish
    Pages (from-to)501-512
    Number of pages12
    JournalLecture Notes in Computer Science
    Volume8347
    Issue number2
    DOIs
    Publication statusPublished - 2013

    Grant Number

    • DP130100364

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