Invention Grant
- Patent Title: Method for watermarking a three dimensional object and method for obtaining a payload from a three dimensional object
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Application No.: US14839973Application Date: 2015-08-29
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Publication No.: US09721318B2Publication Date: 2017-08-01
- Inventor: Gwenael Doerr , Xavier Rolland-Neviere , Pierre Alliez
- Applicant: THOMSON LICENSING
- Applicant Address: FR Issy-les-Moulineaux
- Assignee: Thomson Licensing
- Current Assignee: Thomson Licensing
- Current Assignee Address: FR Issy-les-Moulineaux
- Agency: Myers Wolin, LLC
- Priority: EP14306339 20140829
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06T1/00 ; H04N19/124 ; H04N19/136 ; H04N19/467 ; H04N19/597 ; H04N13/00

Abstract:
A method for watermarking a three-dimensional object is disclosed. The watermarking method comprises computing shape descriptor of a local neighborhood of a current vertex among the plurality of vertices of the three-dimensional object; obtaining a target shape descriptor from the shape descriptor using a quantization grid associated with a watermark payload; and modifying said local neighborhood wherein a position of at least one vertex of said local neighborhood is modified such that a shape descriptor of said modified local neighborhood is close to said target shape descriptor and wherein said current vertex is not modified.A method for obtaining payload from a three-dimensional object, a 3D object carrying a watermark and devices implementing the disclosed methods are further disclosed.
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