Improved video watermarking techniques

Patent metadata

Field	Value
Publication number	US-2016345079-A1
Application number	US-201314129917-A
Country	US
Kind code	A1
Filing date	Nov 1, 2013
Priority date	Nov 1, 2013
Publication date	Nov 24, 2016
Grant date	—

Abstract

Improved techniques for video watermarking are described. In one embodiment, for example, an apparatus may comprise a processor circuit and a watermarking module for execution by the processor circuit to generate disabled video content through modification of a video content item, send a common stream comprising the disabled video content, and send a private content key for the disabled video content, the private content key defining a watermark for the video content item. Other embodiments are described and claimed.

First claim

1 - 25 . (canceled)

26 . An apparatus, comprising:
a processor circuit; and a watermarking module for execution by the processor circuit to generate disabled video content through modification of a video content item, send a common stream comprising the disabled video content, and send a private content key for the disabled video content, the private content key defining a watermark for the video content item.

27 . The apparatus of claim 26 , the watermarking module for execution by the processor circuit to select content information to be conveyed by the watermark and generate the private content key based on the selected content information.

28 . The apparatus of claim 26 , the watermarking module for execution by the processor circuit to select a set of watermarking frames from among a plurality of frames in the video content item and select a set of watermarking macroblocks for each of the selected watermarking frames.

29 . The apparatus of claim 28 , the private content key comprising transform coefficients for one or more watermarking macroblocks.

30 . The apparatus of claim 28 , the watermarking module for execution by the processor circuit to generate the disabled video content by removing values for one or more watermarking macroblocks in each of the selected watermarking frames.

31 . The apparatus of claim 30 , the watermarking module for execution by the processor circuit to generate the private content key using the removed values.

32 . The apparatus of claim 28 , the watermarking module for execution by the processor circuit to identify, for each selected frame, a set of candidate macroblocks having four or more non-zero transform coefficients, and select the set of watermarking macroblocks for each selected frame from among the set of candidate macroblocks of each selected frame.

33 . The apparatus of claim 26 , the watermark comprising a fingerprint.

34 . The apparatus of claim 26 , comprising:
a display; a radio frequency (RF) transceiver; and one or more RF antennas.

35 . A method, comprising:
generating, by a processor circuit, disabled video content through modification of a video content item; sending a common stream comprising the disabled video content; and sending a private content key for the disabled video content, the private content key defining a watermark for the video content item.

36 . The method of claim 35 , comprising:
selecting content information to be conveyed by the watermark; and generating the private content key based on the selected content information.

37 . The method of claim 35 , comprising:
selecting a set of watermarking frames from among a plurality of frames in the video content item; and selecting a set of watermarking macroblocks for each of the selected watermarking frames.

38 . The method of claim 37 , the private content key comprising transform coefficients for one or more watermarking macroblocks.

39 . The method of claim 37 , comprising generating the disabled video content by removing values for one or more watermarking macroblocks in each of the selected watermarking frames.

40 . The method of claim 39 , comprising generating the private content key using the removed values.

41 . The method of claim 37 , comprising:
identifying, for each selected frame, a set of candidate macroblocks having four or more non-zero transform coefficients; and selecting the set of watermarking macroblocks for each selected frame from among the set of candidate macroblocks of each selected frame.

42 . The method of claim 35 , the watermark comprising a fingerprint.

43 . An apparatus, comprising:
a processor circuit; and a watermarking module for execution by the processor circuit to receive disabled video content and a private content key for the disabled video content and generate enabled video content based on the disabled video content and the private content key, the enabled video content comprising a watermark defined by the private content key.

44 . The apparatus of claim 43 , the watermarking module for execution by the processor circuit to receive the disabled video content via a common stream and receive the private content key via a private stream.

45 . The apparatus of claim 44 , the common stream comprising a multicast stream or a broadcast stream.

46 . The apparatus of claim 43 , the private content key indicating a set of modifications to be performed for one or more macroblocks in one or more frames of the disabled video content.

47 . The apparatus of claim 46 , the set of modifications including modifications to one or more quantized discrete cosine transform (QDCT) coefficients for at least one macroblock.

48 . The apparatus of claim 43 , the disabled video content comprising zeroed motion vectors for one or more inter-predicted macroblocks.

49 . The apparatus of claim 43 , the watermark comprising a fingerprint that uniquely identifies the enabled video content.

50 . The apparatus of claim 43 , comprising:
a display; a radio frequency (RF) transceiver; and one or more RF antennas.

Assignees

• Intel Corp

Inventors

• Salishev Sergey Yuogoloth
• Afanasyeva Alexandra
• Linsky Evgeny
• Ivanov Denis
• Ryzhov Dmitry

Classifications

• G06T2201/005

  Image watermarking · CPC title

• C04B35/522

  Graphite (C04B35/536 takes precedence) · CPC title

• H04N21/26613

  for generating or managing keys in general (key distribution for secret or secure communication involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] H04L9/083; network support of key management H04L63/06; key management for network security in communication control or processing H04W12/04) · CPC title

• H04N21/23476

  by partially encrypting, e.g. encrypting the ending portion of a movie · CPC title

• H04N1/32144

  embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp · CPC title