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1. (WO2013126914) FEATURE DETECTION FILTER USING ORIENTATION FIELDS

Pub. No.:    WO/2013/126914    International Application No.:    PCT/US2013/027696
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Tue Feb 26 00:59:59 CET 2013
IPC: G06K 9/62
Applicants: UBIQUITY BROADCASTING CORPORATION
Inventors: CARMICHAEL, Christopher
SANDBERG, Kristian
JORDAN, Connie
Title: FEATURE DETECTION FILTER USING ORIENTATION FIELDS
Abstract:
A target object is found in a target image, by using a computer for determining an orientation field of at least plural pixels of the target image, where the orientation field describes pixels at discrete positions of the target image being analyzed according to an orientation, and location. The orientation field is mapped against an orientation field in model images in a database to compute match values between the orientation field of the target image and orientation field of model images in the database. The match values are thresholded, and those match values that exceed the threshold to are counted to determine a match between the target and the model.