Patent ID: 9014447
Filing Date: 2015-04-21
Classification: G06T

Abstract:
1. A method for characterizing a point in a three-dimensional digital medical image, the method comprising: determining, by a processor, third order derivatives of the three-dimensional digital medical image at one or more points within the three-dimensional digital medical image; determining, by the processor, at each of the one or more points, using the third order derivatives of the three-dimensional digital medical image, one or more invariant features that characterize a local geometry at the point, each of the one or more invariant features being invariant with respect to a parameterization of a surface which relates to the local geometry; and characterizing each of the one or more points using the one or more determined invariant features; and distinguishing a first area within the three-dimensional medical image which relates to an abnormal tissue from a second area within the three-dimensional medical image which relates to a normal body tissue, based on a contrast therebetween with respect to greyscale representations of points included in the first area and points included in the second area, wherein the characterizing comprises assigning a respective greyscale representation to each point in the three-dimensional medical image based on the determined third-order derivative for the corresponding point.