• DocumentCode
    2052110
  • Title

    Stealing bits from a quantized source

  • Author

    Cohen, Aaron S. ; Draper, Stark C. ; Martinian, Emin ; Wornell, Gregory W.

  • Author_Institution
    MIT, Cambridge, MA, USA
  • fYear
    2002
  • fDate
    2002
  • Firstpage
    64
  • Abstract
    We analyze the efficiency of source requantization to reduce rate when starting with an arbitrary rate-distortion achieving codebook. In the quadratic-Gaussian case, it is possible to get within 0.5 bits/sample of the rate-distortion bound, i.e., all good codebooks automatically have close to successive-refinement structure. This same performance is achievable when rate is stolen by embedding bits in the source reconstruction.
  • Keywords
    quantisation (signal); rate distortion theory; source coding; bits stealing; quadratic-Gaussian case; quantized source; rate-distortion bound; source coding; source reconstruction; source requantization efficiency; successive-refinement structure; Decoding; Degradation; Distortion measurement; Rate distortion theory; Rate-distortion; Source coding; Time sharing computer systems;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on
  • Print_ISBN
    0-7803-7501-7
  • Type

    conf

  • DOI
    10.1109/ISIT.2002.1023336
  • Filename
    1023336
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2052110