| http://www.w3.org/ns/prov#value | - shape and radial density profileUS6788821 *13 juin 20017 sept. 2004Matsushita Electric Industrial Co., Ltd.Digital information embedding/extracting apparatus and method, and medium including a program for executing the method recorded thereonUS687970129 sept. 199912 avr. 2005Digimarc CorporationTile-based digital watermar
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