Collusion resistant desynchronization for digital video fingerprinting
AssigneeMicrosoft Corporation
InventorsMehmet Kivanc Mihcak, Yinian Mao
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Abstract
Systems and methods are described that desynchronize a video to be protected, thereby creating one or more digitally fingerprinted videos. In one implementation, a video to be protected is temporally desynchronized and spatially desynchronized. A fingerprinted copy of the video, as modified by the temporal and spatial desynchronizations, is created.
Claims20
One or more computer-readable media comprising computer-executable instructions for video digital fingerprinting, the computer-executable instructions comprising instructions for:
- temporally desynchronizing a video to be protected;
- spatially desynchronizing the video;
- and
- creating a fingerprinted copy of the video as modified by the temporal and spatial desynchronizations;
- wherein combination of a plurality of fingerprinted copies of the video will result in a colluded video with visible artifacts.
One or more computer-readable media comprising computer-executable instructions for video digital fingerprinting, the computer-executable instructions comprising instructions for:
- applying first and second temporal desynchronizations to a video to be protected;
- applying first and second spatial desynchronizations to the video;
- and
- creating first and second fingerprinted copies of the video according to the temporal desynchronizations and the spatial desynchronizations;
- wherein combination of the first and second fingerprinted copies into a colluded video results in perceptible artifacts.
One or more computer-readable media comprising computer-executable instructions for video digital fingerprinting, the computer-executable instructions comprising instructions for:
- temporally desynchronizing a video to be protected by using pseudo random time indices;
- spatially desynchronizing the video by applying rotation, scaling and translation operations in combination with random bending operations;
- and
- creating a fingerprinted copy of the video as modified by the temporal and spatial desynchronizations;
- wherein combination of a plurality of copies of the video, each having temporal and spatial desynchronizations, results in a copy of the video with visible artifacts.
Dependencies are inferred from the claim text.