Title: Method and device for realizing arithmetic coding and decoding
Application Number: 200610162164 Application Date: 2006.12.05
Publication Number: 1983334 Publication Date: 2007.06.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06T9/00
Applicant(s) Name: Huawei Technology Co., Ltd. Address:
Inventor(s) Name: He Yun;Yu Wei;Yang Ping;Meng Xinjian
Attorney & Agent: zhengli meng
Abstract:
    A method for realizing arithmetic-coding /decoding (ACD) includes mapping region carrying out ACD on original number domain onto logarithm domain to realize said ACD directly through addition and subtraction when binary coding/decoding course is carried out in arithmetic coder/decoder, using approximate calculation to realize data conversion between two said domains in logarithm domain ACD course, making update as per probability as required after one symbol being coded/decoded and realizing said update by addition and subtraction in logarithm domain.
Time: 10
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