Variable length coding method and variable length decoding method

Variable length coding method and variable length decoding method

  • CN 1,946,187 A
  • Filed: 11/22/2002
  • Published: 04/11/2007
  • Est. Priority Date: 11/22/2001
  • Status: Active Grant
First Claim
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1. method that is used for the encoding block image, this method comprises:

  • The piece image is carried out frequency translation and quantification, the two-dimensional array of the conversion coefficient after quantizing with acquisition;

    The two-dimensional array of the conversion coefficient after scanning quantizes, with the conversion coefficient after the acquisition scanning, wherein said scanning is carried out to high fdrequency component from low frequency component;

    AndAccording to representing the not information of the sum of transcoding, coding transform coefficient, the conversion coefficient after from high fdrequency component to the low frequency component coded scanning, to obtain the conversion coefficient behind the coding, wherein the transcoding, coding transform coefficient is not also uncoded conversion coefficient.

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