Forensic marking using a common customization function
First Claim
1. A method for producing a distinctly marked content, comprising:
- pre-processing an original content to produce a plurality of tributaries and customization information; and
processing said tributaries and customization information using a common customization function adapted to accept a mark message in order to produce a distinctly marked content, wherein said customization information and tributaries are sufficient, without a further need for utilizing said original content, for the production of content that is marked with any of a multiplicity of mark messages using said common customization function,wherein said customization information represents instructions to said common customization function as to how said tributaries should be combined for various mark data values that comprise said mark message.
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Abstract
Methods, systems, and apparatus are disclosed which enable flexible insertion of forensic watermarks into a digital content signal using a common customization function. The common customization function flexibly employs a range of different marking techniques that are applicable to a wide range of forensic marking schemes. These customization functions are also applicable to pre-processing and post-processing operations that may be necessary for enhancing the security and transparency of the embedded marks, as well as improving the computational efficiency of the marking process. The common customization function supports a well-defined set of operations specific to the task of forensic mark customization that can be carried out with a modest and preferably bounded effort on a wide range of devices. This is accomplished through the use of a generic transformation technique for use as a “customization” step for producing versions of content forensically marked with any of a multiplicity of mark messages.
39 Citations
25 Claims
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1. A method for producing a distinctly marked content, comprising:
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pre-processing an original content to produce a plurality of tributaries and customization information; and processing said tributaries and customization information using a common customization function adapted to accept a mark message in order to produce a distinctly marked content, wherein said customization information and tributaries are sufficient, without a further need for utilizing said original content, for the production of content that is marked with any of a multiplicity of mark messages using said common customization function, wherein said customization information represents instructions to said common customization function as to how said tributaries should be combined for various mark data values that comprise said mark message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 25)
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21. An apparatus for producing a distinctly marked content, comprising:
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means for pre-processing an original content to produce a plurality of tributaries and customization information produced by a pre-processing function; means for processing said tributaries and customization information using a common customization function adapted to accept a mark message in order to produce a distinctly marked content, wherein said customization information and tributaries are sufficient, without a further need for utilizing said original content, for the production of content that is marked with any of a multiplicity of mark messages using said common customization function, wherein said customization information represents instructions to said common customization function as to how said tributaries should be combined for various mark data values that comprise said mark message.
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23. A device, comprising:
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a processor; and a memory comprising processor executable code, the processor executable code, when executed by the processor, configuring the device to; pre-process an original content to produce a plurality of tributaries and customization information; and process said tributaries and customization information using a common customization function adapted to accept a mark message in order to produce a distinctly marked content, wherein said customization information and tributaries are sufficient, without a further need for utilizing said original content, for the production of content that is marked with any of a multiplicity of mark messages using said common customization function, wherein said customization information represents instructions to said common customization function as to how said tributaries should be combined for various mark data values that comprise said mark message.
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24. A computer program product, embodied on a non-transitory computer readable medium, comprising:
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program code for pre-processing an original content to produce a plurality of tributaries and customization information; and program code for processing said tributaries and customization information using a common customization function adapted to accept a mark message in order to produce a distinctly marked content, wherein said customization information and tributaries are sufficient, without a further need for utilizing said original content, for the production of content that is marked with any of a multiplicity of mark messages using said common customization function, wherein said customization information represents instructions to said common customization function as to how said tributaries should be combined for various mark data values that comprise said mark message.
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Specification