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Image Compression Using Adaptive Vector Quantization

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3 Author(s)
Goldberg, M. ; Dept. of Electr. Eng., Ottawa Univ., Ont., Canada ; Boucher, P. ; Shlien, Seymour

The paper demonstrates the application of adaptive vector quantization techniques to the coding of monochromatic and color pictures. Codebooks of representative vectors are generated for different portions of the image. By means of extensive simulations, the performance of the coder for monochrome images is estimated as a function of the various coding parameters-vector dimensionality, number of representative vectors, and degree of adaptivity. It is shown that for a vector size of dimension 4, there is a zone of operation, ranging from 1.0 to 1.5 bits/pixel, where adaptive vector quantization is advantageous. Despite the simplicity of the decoder, the performance of the adaptive vector quantizer is found to be comparable with block transform coding schemes for both monochrome and color pictures.

Published in:

Communications, IEEE Transactions on  (Volume:34 ,  Issue: 2 )

Date of Publication:

Feb 1986

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