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ENTROPY CODING METHOD USING AN INDEX MAPPING TABLE, AND IMAGE-ENCODING/DECODING APPARATUS AND METHOD USING SAID ENTROPY CODING METHOD

  • US 20130301944A1
  • Filed: 01/20/2012
  • Published: 11/14/2013
  • Est. Priority Date: 01/20/2011
  • Status: Active Grant
First Claim
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1. An image decoding method, comprising:

  • mapping a received codeword to a specific code number with reference to an inverse codeword mapping table and calculating the mapped code number in a form of a table index; and

    updating an inverse index mapping table based on at least one of a cumulative number of times that the specific code number has been generated, a consecutive number of times that the specific code number has been generated, coding/decoding information about a peripheral block, and critical value information for updating the inverse index mapping table.

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