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Adaptation of Zerotrees Using Signed Binary Digit Representations for 3D Image Coding

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Author(s): Christophe Emmanuel | Duhamel Pierre | Mailhes Corinne

Journal: EURASIP Journal on Image and Video Processing
ISSN 1687-5176

Volume: 2007;
Issue: 1;
Start page: 054679;
Date: 2007;
Original page

ABSTRACT
Zerotrees of wavelet coefficients have shown a good adaptability for the compression of three-dimensional images. EZW, the original algorithm using zerotree, shows good performance and was successfully adapted to 3D image compression. This paper focuses on the adaptation of EZW for the compression of hyperspectral images. The subordinate pass is suppressed to remove the necessity to keep the significant pixels in memory. To compensate the loss due to this removal, signed binary digit representations are used to increase the efficiency of zerotrees. Contextual arithmetic coding with very limited contexts is also used. Finally, we show that this simplified version of 3D-EZW performs almost as well as the original one.
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