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. 10, 2012
Filed:
Feb. 18, 2009
Fernando Perez Gonzalez, Vigo, ES;
Alberto Malvido Garcia, Cangas de Morrazo, ES;
Fernando Perez Gonzalez, Vigo, ES;
Alberto Malvido Garcia, Cangas de Morrazo, ES;
Other;
Abstract
Procedure for verifying the integrity of documents which comprises a characterization of the original document to obtain a hash () and a stage of integrity verification, this stage comprising in turn, representing () the digital document to be verified in a matrix format; adapting () said document to a determined resolution in the characterization and correcting () the inclination, obtaining a corrected image (); obtaining (), the displacement produced between the contents in the original document and the document to be verified; obtaining () optimal displacement coordinates for each one of the regions of the corrected image; obtaining () one metric from the quantified coefficients of the corrected image and the corresponding ones in the original document; deciding () on the integrity of each region of the digitalized document using the previous metrics; and finally deciding () on the integrity of the document based on the results of the previous step.