DETERMINATION OF LOCALISED QUALITY MEASUREMENTS FROM A VOLUMETRIC IMAGE RECORD

摘要

The invention relates to a method and a device for processing a volumetric image record. The method comprises the following steps: carrying out a non-optical image scanning method on an object to be analysed and generating a volumetric image record and extracting the object contour from the volumetric image record in order to determine the position of the object surface; defining an object surface point and a surrounding area for said object surface point and analysing the grey tones within the surrounding area; calculating a quality value, which reflects the localised quality of the surface, for the object surface point on the basis of the grey-tone analysis. The device comprises equipment for carrying out a non-optical image scanning method on an object to be analysed and for generating a volumetric image record and comprises a processing device which is programmed to extract an object contour from the volumetric image record in order to determine the position of the object surface, said processing unit, in addition, being programmed to define at least one trajectory or a surrounding area for an object surface point, to analyse the grey-tone progression along the at least one trajectory or to analyse the grey tones within the surrounding area, and to calculate a quality value for the object surface point in order to represent a localised quality of the surface.