Patent ID: 8971589
Filing Date: 2015-03-03
Classification: G06K

Abstract:
1. A method implemented by a computer for determining locations of predetermined feature points, the method comprising: a first search step of searching a predetermined first search area in an image for a first location of each of the predetermined feature points; a correction step of correcting the first location of each of the predetermined feature points searched out of the first search area based on a geometric restriction among the predetermined feature points; a setting step of setting a second search area for each of the predetermined feature points based on the first location of that feature point corrected in said correction step; a second search step of searching the second search area for a second location of each of the predetermined feature points; a determination step of determining reliability of the second location of each of the predetermined feature points searched out of the second search area; and a selection step of selecting, as a final location for each of the predetermined feature points, either the first location corrected in said correction step or the second location searched out of the second search area, based on the reliability of the second location, respectively.