Local Frequency Table for Context-based Adaptive Arithmetic Coding in Text Compression

Adaptive arithmetic coding is widely adopted in text compression. However, to achieve a high coding gain, an advanced way for context assignment is required. In this paper, the local frequency table technique is adopted to improve the coding efficiency of context-based adaptive arithmetic coding in...

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Bibliographic Details
Published in:IEEE International Conference on Consumer Electronics-China (Online) pp. 83 - 84
Main Authors: Tsai, Yi-Lin, Ding, Jian-Jiun
Format: Conference Proceeding
Language:English
Published: IEEE 06.07.2022
Subjects:
Arithmetic
Classification algorithms
Consumer electronics
Encoding
Frequency estimation
Probability distribution
ISSN:2575-8284
Online Access:Get full text
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Summary:Adaptive arithmetic coding is widely adopted in text compression. However, to achieve a high coding gain, an advanced way for context assignment is required. In this paper, the local frequency table technique is adopted to improve the coding efficiency of context-based adaptive arithmetic coding in text compression. With it, the probability distribution of the characters to be encoded can be estimated more accurately and a higher compression ratio can be achieved. Experimental results show that the proposed coding algorithm with a local frequency table outperforms other methods and achieves better compression performance for text compression.
ISSN:2575-8284
DOI:10.1109/ICCE-Taiwan55306.2022.9869271