Patent Document ID: 9292931
Application ID: 13912805
Patent Status: 1

Claim One:
1. An apparatus for extracting a boundary of an object in an image, comprising: memory; a processor coupled to the memory and configured to: determine a start point and an end point of the boundary of the object in the image and to determine a position of a reference point relevant to the start point and the end point; determine a first direction of the boundary; determine a second direction intersecting the first direction; determine in the image a first region comprising the start point, the end point and the reference point and to obtain a gradient map of the first region; determine at least one second region on at least one of two sides of the reference point along the second direction and to attenuate in the gradient map the gradients of the second region; and extract a boundary between the start point and the end point based on the attenuated gradient map to obtain the boundary of the object.