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:
Jan. 24, 2006
Filed:
Jan. 10, 2002
Method and device for processing and watermarking a set of coefficients representing a digital image
Ioana Donescu, Rennes, FR;
Ioana Donescu, Rennes, FR;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention concerns a method of processing a set of coefficients representing a digital image () with a view to an insertion of at least one item of watermarking information in said image, this image being liable to undergo a set of geometric transformations and said coefficients being grouped together in regions, said method being characterized in that it includes a step (E) of determining, amongst at least some of said regions, a set of so-called acceptable regions, adapted to receive said at least one item of watermarking information; and a step (E) of sequencing, according to at least one predetermined criterion, at least one part of said set of acceptable regions, in an order which is invariant with respect to at least one of said geometric transformations.