Binary arithmetic coding with key-based interval splitting

Binary arithmetic coding involves recursive partitioning the range [0,1) in accordance with the relative probabilities of occurrence of the two input symbols. We describe a modification of this approach in which the overall length within the range [0,1) allocated to each symbol is preserved, but the...

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Bibliographic Details
Published in:IEEE signal processing letters Vol. 13; no. 2; pp. 69 - 72
Main Authors: Jiangtao Wen, Hyungjin Kim, Villasenor, J.D.
Format: Journal Article
Language:English
Published: New York IEEE 01.02.2006
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Arithmetic
Arithmetic codes
Arithmetic coding
Compressing
Cryptography
Data compression
Decoders
Decoding
Encoders
Encoding
Intervals
Probability distribution
Recursive
Splitting
Standards development
Symbols
Transform coding
ISSN:1070-9908, 1558-2361
Online Access:Get full text
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Summary:Binary arithmetic coding involves recursive partitioning the range [0,1) in accordance with the relative probabilities of occurrence of the two input symbols. We describe a modification of this approach in which the overall length within the range [0,1) allocated to each symbol is preserved, but the traditional assumption that a single contiguous interval is used for each symbol is removed. A key known to both the encoder and decoder is used to describe where the intervals are "split" prior to encoding each new symbol. The repeated splitting has the effect of both scrambling the intervals and altering their lengths, thereby allowing both encryption and compression to be obtained simultaneously.
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ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2005.861589