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Embedding watermarks into compressed video data

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-009/00
출원번호 US-0003408 (1998-01-06)
발명자 / 주소
  • Mark D. Conover
  • Fleming M. Oliver
출원인 / 주소
  • Pixel Tools Corporation
대리인 / 주소
    D. E. Schreiber, Esq.
인용정보 피인용 횟수 : 168  인용 특허 : 10

초록

A for method watermarking a compressed video bitstream selects for modification numerous sites within an MPEG compressed video bitstream, each of which sites includes a DCT coefficient which is apt for modification. Watermarking sites are preferably located in MPEG B frames, and the DCT coefficient

대표청구항

1. A method for adding a watermark to a compressed video bitstream comprising the steps of:selecting a plurality of sites within the compressed video bitstream that encode a discrete cosine transform ("DCT") coefficient which is apt for modification to embed a watermark into the compressed video bit

이 특허에 인용된 특허 (10)

  1. Sandford ; II Maxwell T. ; Handel Theodore G. ; Bradley Jonathan N., Compression embedding.
  2. Cox Ingemar J. ; Miller Matthew L., Counteracting geometric distortions for DCT based watermarking.
  3. Cox Ingemar J. ; Miller Matthew L.,LTX ; Tanaka Kazuyoshi,JPX ; Wakasu Yutaka,JPX, Digital watermarking.
  4. Isnardi Michael Anthony ; Musgrave Clyde, Method and apparatus for embedding a watermark into a digital image or image sequence.
  5. Rhoads Geoffrey B., Method and apparatus for robust information coding.
  6. Huizer Cornelis M.,NLX ; Karel Lucas M.W.M.,NLX ; Bosveld Frank,NLX ; De Visser Pieter J.,NLX, Method of receiving compressed video signals using a latency buffer during pause and resume.
  7. Lee Chong U. ; Moallemi Kamran ; Hinderling Jurg, Post-compression hidden data transport for video.
  8. Cooperman Marc (Palo Alto CA) Moskowitz Scott A. (Tokyo JPX), Steganographic method and device.
  9. Girod Bernd,DEX ; Hartung Frank H. D.,DEX, Watermarking method and apparatus for compressed digital video.
  10. Cox Ingemar J., Watermarking of image data using MPEG/JPEG coefficients.

이 특허를 인용한 특허 (168)

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  10. Zarrabizadeh, Mohammad Hossein, Color selection scheme for digital video watermarking.
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