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http://dx.doi.org/10.6109/jkiice.2008.12.10.1773

A Method of Quadtree-Based Compression for the Image by Wavelet Transform  

Kwak, Chil-Seong (한국해양대학교)
Kim, Ki-Moon (한국해양대학교)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.12, no.10, 2008 , pp. 1773-1779 More about this Journal
Abstract
Images play the most important role in human perception. In order to send the image information by the digital type, the compression is essential. Recently, a lot of studies on encoding algorithms for image by wavelet transform are going on. In this paper, a quadtree-based method of image compression applied to the images decomposed by wavelet transform by using the correlations between pixels and '0' data grouping is proposed. For the proposed method, the experimental gray image with $256{\times}256$ size and 8[bit], is used. And, the performance of proposed method is evaluated to compare with DCT compression method.
Keywords
digital image compression; wavelet transform; quantization; encoding;
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