A maximum entropy approach to one-class classification of remote sensing imagery

Authors: Li, Wenkai; Guo, Qinghua

Source: International Journal of Remote Sensing, Volume 31, Number 8, 2010 , pp. 2227-2235(9)

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Abstract:

In remote sensing classification there are situations when users are only interested in classifying one specific land type without considering other classes, which is referred to as one-class classification. Traditional supervised learning requires all classes that occur in the image to be exhaustively labelled and hence is inefficient for one-class classification. In this study we investigate a maximum entropy approach (MAXENT) to one-class classification of remote sensing imagery, i.e. classifying a single land class (e.g. urban areas, trees, grasses and soils) from an aerial photograph with 0.3 m spatial resolution. MAXENT estimates the Gibbs probability distribution that is proportional to the conditional probability of being positive. A threshold for generating binary predictions can be determined based on the omission rate of a validation set. The results indicate that MAXENT provides higher classification accuracy than the one-class support vector machine (OCSVM). MAXENT does not require other land classes for training. Its input is only a set of training samples of the specific land class of interest, as well as a set of known constraints on the distribution. Therefore, the effort of manually collecting training data for classification can be significantly reduced.

Document Type: Research article

DOI: http://dx.doi.org/10.1080/01431161003702245

Affiliations: 1: Sierra Nevada Research Institute, School of Engineering, University of California at Merced, California, USA

Publication date: 2010-03-01

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