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Lossless image compression using integer coefficient filter banks and class-wise arithmetic coding

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3 Author(s)
Balasingham, I. ; Dept. of Telecommun., Norwegian Univ. of Sci. & Technol., Trondheim, Norway ; Lervik, J.M. ; Ramstad, T.A.

A novel way of constructing integer coefficient 2-channel filter banks is proposed. A set of relationships among the filter coefficients is established in order to satisfy linear phase, perfect reconstruction, and FIR properties. The remaining degrees of freedom are used to obtain integer coefficient values by maximizing a performance evaluation function, namely the subband coding gain. The number of bits required to represent the subband samples is kept low through efficient nonlinear implementation techniques. An octave-band frequency partitioning where the number of stages is determined according to the image size is employed. The subband samples are then classified into one out of a finite number of classes, and each class is coded by an arithmetic coder. The obtained compression ratios are encouraging compared to the “best” results reported so far in the literature

Published in:

Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on  (Volume:3 )

Date of Conference:

12-15 May 1998