ULTRASONIC DIAGNOSTIC APPARATUS, ULTRASONIC IMAGE PROCESSOR, ULTRASONIC IMAGE PROCESSING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus which can remove speckles in a two-or three-dimensional ultrasonic image data more effectively and at a high speed. SOLUTION: The ultrasonic diagnostic apparatus resolves hierarchically an image data prior to scan conversion processing into multi-resolutions to obtain a low-resolution region of image data from a first level to a nth level as well as a high-resolution region of image data: applies an output data from a one rank-lower hierarchy or the low-resolution region of image data in the bottom hierarchy with a non-linear anisotropic diffusion filtration; and applies filtration generating edge information of a signal for each hierarchy from the output data from the one rank-lower hierarchy or the low-resolution region of image data in the bottom hierarchy. The apparatus also bases on the edge information of each hierarchy to control a signal level of the high-resolution region of image data each hierarchy; and synthesizes hierarchically by multi-resolutions the output data by non-linear anisotropic diffusion filtration as well as the out put data by the high regional level control obtained in the each hierarchy. COPYRIGHT: (C)2009,JPO&INPIT