Patent ID: 7369638
Filing Date: 2008-05-06
Classification: A61B,G06T,H04N,Y10S

Abstract:
1. A method for detecting a protrusion in a medical image, comprising: segmenting a medical image; calculating a distance map of the medical image; calculating a gradient of the distance mapped medical image; and processing the gradient to detect a protrusion in the medical image, wherein the gradient is processed by: projecting a first plurality of rays from a location in the distance mapped medical image; calculating a value for each of the first plurality of rays based on features of each of the first plurality of rays and the gradient of the distance mapped medical image; summing and scaling the value of each of the first plurality of rays; and detecting one of a sphere-like and polyp-like shape using the summed and scaled values of the first plurality of rays, wherein one of the sphere-like and polyp-like shapes is the protrusion.