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A Classification Method of Diagnostic Image based on Tangent Distance

In this paper we present a classification approach based on tangent distance, which is specially designed for many applications of image recognition, and discuss the application in our classification of radiographs. In contrast to the traditional method to determine tangent vectors, we design a systemic approach using the single value decomposition to extract the main changed characters of a certain image set. With this new method we achieved considerable results in different image sets including diagnostic images and successful application systems have been developed in practice.