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Arithmetic coding for data compression

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2 Author(s)
Howard, P.G. ; Visual Commun. Res., AT&T Bell Labs., Holmdel, NJ, USA ; Vitter, J.S.

Arithmetic coding provides an effective mechanism for removing redundancy in the encoding of data. We show how arithmetic coding works and describe an efficient implementation that uses table lookup as a first alternative to arithmetic operations. The reduced-precision arithmetic has a provably negligible effect on the amount of compression achieved. We can speed up the implementation further by use of parallel processing. We discuss the role of probability models and how they provide probability information to the arithmetic coder. We conclude with perspectives on the comparative advantages and disadvantages of arithmetic coding

Published in:

Proceedings of the IEEE  (Volume:82 ,  Issue: 6 )