Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11679
Title: Lossless image compression using binary wavelet transform
Authors: Pan, H
Siu, WC 
Law, NF 
Issue Date: 2007
Source: IET Image processing, 2007, v. 1, no. 4, p. 353-362 How to cite?
Journal: IET Image Processing 
Abstract: A binary wavelet transform (BWT) has several distinct advantages over a real wavelet transform when applied to binary data. No quantisation distortion is introduced and the transform is completely invertible. Since all the operations involved are modulo-2 arithmetic, it is extremely fast. The outstanding qualities of the BWT make it suitable for binary image-processing applications. The BWT, originally designed for binary images, is extended to the lossless compression of grey-level images. An in-place implementation structure of the BWT is explored. Then, a simple embedded lossless BWT-based image-coding algorithm called progressive partitioning binary wavelet-tree coder (PPBWC) is proposed. The proposed algorithm is simple in concept and implementation, but achieves promising lossless compression efficiency as compared with the conventional bitplane scanning methods. Small alphabets in the arithmetic coding, non-causal adaptive context modelling and source division are the major factors that contribute to the gain of compression efficiency of the PPBWC. Experimental results show that the PPBWC outperforms most of other embedded coders in terms of coding efficiency.
URI: http://hdl.handle.net/10397/11679
ISSN: 1751-9659
DOI: 10.1049/iet-ipr:20060195
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