Improved Wavelet Image Compression Using Correlation of VQ index


The Transactions of the Korea Information Processing Society (1994 ~ 2000), Vol. 7, No. 6, pp. 1956-1963, Jun. 2000
10.3745/KIPSTE.2000.7.6.1956,   PDF Download:

Abstract

In this paper, a wavelet image coding scheme exploiting the correlation of neighboring VQ indices in eh wavelet domain is proposed. the codewords in each sub-codebook are re-ordered in terms of their energies in order to increase the correlation of he indices. Then, the generated indices after VQ can be further encoded by non-adaptive DPCM/Huffman method. LBG algorithm and a fast-PNN algorithm using k-d trees are used for generating a multiresolution codebook. Experimental results show that or scheme outperforms the ordinary wavelet VQ and JPEG at low bit rates.


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Cite this article
[IEEE Style]
J. H. Hwang, C. S. Hong, D. Y. Lee, "Improved Wavelet Image Compression Using Correlation of VQ index," The Transactions of the Korea Information Processing Society (1994 ~ 2000), vol. 7, no. 6, pp. 1956-1963, 2000. DOI: 10.3745/KIPSTE.2000.7.6.1956.

[ACM Style]
Jae Ho Hwang, Choong Seon Hong, and Dae Young Lee. 2000. Improved Wavelet Image Compression Using Correlation of VQ index. The Transactions of the Korea Information Processing Society (1994 ~ 2000), 7, 6, (2000), 1956-1963. DOI: 10.3745/KIPSTE.2000.7.6.1956.