Image texture characterization of medical images

G - Physics – 06 – T

Patent

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G06T 7/40 (2006.01) A61B 5/055 (2006.01) A61B 6/03 (2006.01) G01V 1/32 (2006.01)

Patent

CA 2723367

A method for texture characterization is provided. Multi--dimensional spectrum data are determined by transforming multi-dimen-sional image data into Fourier domain. T he multi-dimensional spectrum data are partitioned into a plurality of partitions, wherein each partition is associated with a predetermined set of orthogonal voice frequencies. The partitioned multi-dimensional spectrum data are then transformed into Stockwell domain resulting in discrete orthonormal Stockwell transform data. The discrete orthonormal Stockwell transform data are then pro-cessed to determine data associated with image texture, which are indica-tive of a feature of the object.

L'invention concerne un procédé de caractérisation basé sur la texture. Des données spectrales multidimensionnelles sont déterminées en transformant des données multidimensionnelles dimage vers le domaine de Fourier. Les données spectrales multidimensionnelles sont fractionnées en une pluralité de partitions, chaque partition étant associée à un ensemble prédéterminé de fréquences vocales orthogonales. Les données spectrales multidimensionnelles fractionnées sont ensuite transformées vers le domaine de Stockwell, donnant des données transformées de Stockwell orthonormées discrètes. Ces données transformées de Stockwell orthonormées discrètes sont alors traitées pour déterminer des données associées à la texture dimage, qui indiquent une caractéristique de lobjet.

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