The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2009
Filed:
Aug. 03, 2005
Stephen James Hardy, West Pymble, AU;
Peter Alleine Fletcher, Rozelle, AU;
Kieran Gerard Larkin, Putney, AU;
Ian Richard Gibson, Coogee, AU;
Stephen James Hardy, West Pymble, AU;
Peter Alleine Fletcher, Rozelle, AU;
Kieran Gerard Larkin, Putney, AU;
Ian Richard Gibson, Coogee, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of generating a matching key for an image is disclosed. The matching key is substantially invariant to rotation, scale and translation. The method starts by forming a spatial domain representation of the image that is substantially invariant to translation of the image. Rotation and/or scaling in the spatial domain representation is next transformed into translation to form a transformed image. A representation of the transformed image is then formed that is substantially invariant to translation of the transformed image. The representation of the transformed image is the matching key for the image.