Unsupervised classification based on fuzzy c-means with uncertainty analysis

Qunming Wang, Wen Zhong Shi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

19 Citations (Scopus)

Abstract

Fuzzy c-means (FCM) is a widely used unsupervised classifier for remote sensing images. This letter presents an uncertainty analysis-based FCM (UAFCM) classification method. The uncertainty in this letter refers to the discriminative ability of class attributes in fuzzy classification on a per-pixel basis. UAFCM is performed by analysing the uncertainty in FCM classification result and reclassifying the pixels with large uncertainty. Specifically, the uncertainty in FCM classification is measured by entropy and a proposed square error-based criterion. A threshold value is then determined to recognize the pixels with large uncertainty, which are reclassified with spatial connectivity subsequently. Experiments on three remote sensing images show that the proposed UAFCM consistently obtains more accurate classification results than does FCM, and hence provides an effective new unsupervised classification method for remote sensing images.
Original languageEnglish
Pages (from-to)1087-1096
Number of pages10
JournalRemote Sensing Letters
Volume4
Issue number11
DOIs
Publication statusPublished - 1 Nov 2013

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Electrical and Electronic Engineering

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