Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Diego Perez Vieites0
Luis Perez Freire0
Pablo Pedro Perez Garcia0
Date of Patent
March 16, 2021
Patent Application Number
16171025
Date Filed
October 25, 2018
Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for watermarking documents comprising:identifying and locating spaces in a received original document (10) by a location analysis (110) module which distinguishes between intra-word spaces and inter-word spaces;minimizing an error probability of interference between intra-word spaces and inter-word spaces in the watermarked document (20) by an optimization module (111);encoding (113) the message (30) into codewords and encoding (114) the codewords into the watermark;embedding the watermark to generate (115) the watermarked document (20) by modifying the intra-word spaces and inter-word spaces of the original document (10).
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