Patent ID: 8774510
Filing Date: 2014-07-08
Classification: G06K

Abstract:
1. A method for image processing comprising: (a) determining edge pixels of a model image using an edge based technique; (b) determining an angular orientation for each said edge pixels of said model image; (c) determining a histogram of gradient orientations based upon said angular orientations of said model image; (d) determining edge pixels of an input image using an edge based technique; (e) determining an angular orientation for each of said edge pixels of said input image; (f) determining a histogram of gradient orientations based upon said angular orientations of said input image; (g) comparing said histogram of gradient orientations of said model image with said histogram of gradient orientations of said input image to determine candidate locations of an object and candidate orientations of said object within said input image, wherein said candidate orientations as a result of said comparing discriminate between candidate orientations that are offset by 180 degrees.