Electronic device and method for recognizing features of objects

Patent metadata

Field	Value
Publication number	US-8942485-B2
Application number	US-201314014476-A
Country	US
Kind code	B2
Filing date	Aug 30, 2013
Priority date	Oct 9, 2012
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

An electronic device stores haar-like features and geometrical features of an object. A reference image of the object is created according to the geometrical features of the object. An outline image is obtained from each image of the object. The electronic device calculates derivatives of each two adjacent points on the reference image and each outline image. A derivative matrix of the reference image and a derivative matrix of each outline image are generated. The electronic device generates a first derivative curve corresponding to the derivative matrix of the reference image and a second derivative curve corresponding to each derivative matrix of the outline image. When all the second derivative curves are the same as the first derivative curve, the electronic device determines whether each outline image is corresponding to the object by using the haar-like features of the object.

First claim

What is claimed is:

1. An electronic device, comprising:
a processor; and
a non-transitory computer-readable medium that stores one or more programs, which comprise instructions which when executed by the processor of the electronic device, performs operations of:
(a) create a reference image of an object according to geometrical features of the object;
(b) obtain an outline image from each image of the object;
(c) search for feature points of the object from the reference…

Assignees

• Hongfujin Prec Ind Shenzhen
• Hon Hai Prec Ind Co Ltd

Inventors

• Wang Guang-Jian

Classifications

• G06V10/446 Primary

  Physics · mapped topic

• G06V10/46

  Physics · mapped topic

• G06K9/4604 Primary

  Physics · mapped topic

• G06K9/00624

  Physics · mapped topic