Efficient Incorporation of Markov Random Fields in Change Detection

Henrik Aanæs, Allan Aasbjerg Nielsen, Jens Michael Carstensen, Rasmus Larsen, Bjarne Kjær Ersbøll

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Abstract

Many change detection algorithms work by calculating the probability of change on a pixel-wise basis. This is a disadvantage since one is usually looking for regions of change, and such information is not used in pixel-wise classification - per definition. This issue becomes apparent in the face of noise, implying that the pixel-wise classifier is also noisy. There is thus a need for incorporating local homogeneity constraints into such a change detection framework. For this modelling task Markov Random Fields are suitable. Markov Random Fields have, however, previously been plagued by lack of efficient optimization methods or numerical solvers. We here address the issue of efficient incorporation of local homogeneity constraints into change detection algorithms. We do this by exploiting recent advances in graph based algorithms for Markov Random Fields. This is combined with an IR-MAD change detector, and demonstrated on real data with good results.
Original languageEnglish
Title of host publicationIEEE International Geoscience and remote sensing symposium
Volume3
PublisherIEEE
Publication date2009
ISBN (Print)978-1-4244-3394-0
DOIs
Publication statusPublished - 2009
Event2009 IEEE International Geoscience and Remote Sensing Symposium - University of Cape Town, Cape Town, South Africa
Duration: 12 Jul 200917 Jul 2009

Conference

Conference2009 IEEE International Geoscience and Remote Sensing Symposium
LocationUniversity of Cape Town
CountrySouth Africa
CityCape Town
Period12/07/200917/07/2009

Bibliographical note

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Keywords

  • Markov Random Fields
  • IR-MAD
  • Homogeneity Constraints
  • Graph Based Algorithms
  • Change Detection

Cite this

Aanæs, H., Nielsen, A. A., Carstensen, J. M., Larsen, R., & Ersbøll, B. K. (2009). Efficient Incorporation of Markov Random Fields in Change Detection. In IEEE International Geoscience and remote sensing symposium (Vol. 3). IEEE. https://doi.org/10.1109/IGARSS.2009.5417856