Remote sensing image classification is an important and complex problem. Conventional remote sensing image
classification methods are mostly based on Bayesian subjective probability theory, but there are many defects for its
uncertainty. This paper firstly introduces evidence theory and decision tree method. Then it emphatically introduces the
function of support degree that evidence theory is used on pattern recognition. Combining the D-S evidence theory with
the decision tree algorithm, a D-S evidence theory decision tree method is proposed, where the support degree function is
the tie. The method is used to classify the classes, such as water, urban land and green land with the exclusive spectral
feature parameters as input values, and produce three classification images of support degree. Then proper threshold
value is chosen and according image is handled with the method of binarization. Then overlay handling is done with
these images according to the type of classifications, finally the initial result is obtained. Then further accuracy
assessment will be done. If initial classification accuracy is unfit for the requirement, reclassification for images with
support degree of less than threshold is conducted until final classification meets the accuracy requirements. Compared
to Bayesian classification, main advantages of this method are that it can perform reclassification and reach a very high
accuracy. This method is finally used to classify the land use of Yantai Economic and Technological Development Zone
to four classes such as urban land, green land and water, and effectively support the classification.
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