MULTITHRESHOLD DIMENSION VECTOR FOR TEXTURE ANALYSIS AND ITS APPLICATION TO LIVER-TISSUE CLASSIFICATION

A new feature set derived from the fractal geometry, called the multi-threshold dimension vector (MTDV), is proposed for texture analysis. The major properties of the approach are: (i) it is easy to compute; (ii) it is geometrically invariant, i.e. it is invariant under the transformations of translation, rotation, reflection, and scaling; and (iii) it is invariant under the linear gray-level transformation. These properties have enhanced the practical applications of the features. The MTDV is applied to the classification of ultrasonic liver images and produces about 88% of the correct classification rate. This suggests that the MTDV is an excellent tool for medical image processing.