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Digital change detection with the aid of multiresolution wavelet analysis

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This Letter presents the preliminary findings of a new approach to deal with misregistration effects on change detection results. A multiresolution analysis with wavelet transforms applied to image differencing results enabled the extraction of changed sites according to size classes. Changes of interest were pinpointed successfully without the necessity of accurate spatial registration or radiometric rectification while differences not related to land cover changes were bypassed. The method's applicability is demonstrated with a multitemporal data set of Landsat MSS and TM images for the detection of deforestation and new areas of rock exploitation in south-eastern Brazil.

Document Type: Research Article


Affiliations: 1: Centre for Geo-Information, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands 2: School of Computer Sciences, Queen's University of Belfast, BT7 1NN, Belfast, Northern Ireland

Publication date: December 15, 2001

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