System and method for securing media content
AssigneeFuturewei Technologies, Inc.
InventorsLei Yang, Qian Chen, Jun Tian, Hong Heather Yu, Dapeng Oliver Wu
Life of this patent
Estimating the term…
Abstract
A system and method for securing media content are provided. A method for distributing security media content includes embedding a marking payload into media content, thereby producing embedded media content, applying a transform to the embedded media content, thereby producing secured media content, and distributing the secured media content. The marking payload is embedded based on perceptual information regarding the media content.
Claims27
A method for distributing security media content, the method comprising:
- determining an embedding strength in accordance with media content, the determining comprising:
- computing a spatial mask;
- computing a temporal mask;
- selecting a smaller of the spatial mask or the temporal mask, thereby producing a selected mask;
- restricting the selected mask to reside within a range;
- and
- setting the restricted selected mask as the embedding strength;
- embedding a marking payload into the media content in accordance with the embedding strength, thereby producing embedded media content;
- applying a transform to the embedded media content, thereby producing secured media content;
- and
- distributing the secured media content.
A method for extracting information embedded in media content, the method comprising:
- registering a candidate media content to an original media content, including spatial domain registration using an iterative Kanade-Lucas-Thomasi feature tracker algorithm until a maximum value of a displacement is less than a threshold;
- correlating a marking pattern to the candidate media content, thereby producing a sequence of values;
- decrypting the sequence of values, thereby producing a decrypted sequence of values;
- and
- outputting the decrypted sequence of values as the information.
A system comprising:
- an embedder configured to:
- receive media content,
- compute a spatial mask,
- compute a temporal mask,
- select a smaller of the spatial mask or the temporal mask, thereby producing a selected mask,
- restrict the selected mask to reside within a range,
- set the restricted selected mask as an embedding strength in accordance with the media content,
- embed information into the media content in accordance with the embedding strength to produce embedded media content, and
- transform the embedded media content to produce secured media content;
- and
- a detector configured to be coupled to a candidate media input and to a media content input, to match a candidate media content provided by the candidate media input to original media content provided by the media content input, to correlate a matching pattern to the candidate media content to produce a sequence of values, and to decrypt the sequence of values to produce information embedded in the candidate media content.
Dependencies are inferred from the claim text.