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PDF is all-time favorite format of almost every user to store and exchange information. Now, if it is so much famous among the users, there are numbers of an advance feature supported by the PDF
Video fingerprinting should not be confused with digital watermarking, which relies on inserting identifying features into the content and therefore changing the content. Some watermarks can be inserted in a way that they are imperceptible by a viewer
(2) Digital watermarking: a technique by which information such as an identification (ID) tag is embedded in content by making otherwise negligible changes that are subject to recognition and identification at a later point. Our mobile video watermarking technology is an example of this