Data Compression


Criteria

Survey Formats

Basics

Compression Methods

Data Formats


Arithmetic Coding (AC)

Principle of the AC

General Algorithm

Encoding

Decoding

Calculation of Intervals

AC versus Huffman

Data with high Redundancy

Adaptive AC

Implementations


Glossary

Index


Download


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General Algorithm


In the following an algorithm is described, which allows an arithmetic coding in principle. It is not intended to provide an applicable implementation or to optimize the utilization of resources. Additionally aspects of integer arithmetics are ignored.


Regarding the usage of the AC, it shall be explicitly pointed out that arithmetical coding is subject to legal restrictions due to existing patents and that the acquisition of licenses is essential.


Whether the represented procedures are congruent with protected algorithms or whether parts of the procedures are affected by it cannot be determined certainly Therefore no implementations should be provided without additional inquiries with the patentees.


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Arithmetic Coding Scheme Intervals abcd Encoding