Scene change detection
AssigneesSony Corporation, Sony Electronics Inc.
InventorsBrant L. Candelore, Henry Derovanessian, Leo M. Pedlow, Jr.
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Abstract
In certain embodiments, a method of detecting a scene change in a digital video signal involves examining a slice of the digital video signal; determining if the slice contains a greater amount of data than a threshold amount of data; and if the slice contains a greater amount of data than the threshold, determining that the slice forms a part of a scene change. This abstract should not be considered limiting since embodiments consistent with the present invention may involve more, different or fewer elements.
Claims27
A method of detecting a scene change in a digital video signal, comprising:
- examining a slice of the digital video signal, said slice containing at least a slice start code and video data, where the video data contains luminance and chrominance data;
- determining if the slice contains a greater amount of video data, as measured by a count of a number of data elements of video data in the slice, than a threshold amount of data;
- if the slice contains a greater amount of data than the threshold, determining that the slice forms a part of a scene change;
- and encrypting at least a portion of the digital video signal carrying data representing a first image associated with the scene change.
A method of selective encryption of a digital video signal, comprising:
- detecting a scene change in the digital video signal by:
- examining a slice of the digital video signal, said slice containing at least a slice start code and video data, where the video data contains luminance and chrominance data;
- determining if the slice contains a greater amount of video data, as measured by a count of a number of data elements of video data in the slice, than a threshold amount of data;
- and
- if the slice contains a greater amount of video data than the threshold, determining that the slice forms a part of a scene change;
- and
- encrypting at least a portion of the digital video signal carrying data representing a first image associated with the scene change.
Dependencies are inferred from the claim text.