Document (#6689)

Author

Torres, L.
Arias, E.

Title

Stochastic generation of the codebook in vector quantization of images : compression systems

Source

Information services and use. 13(1993) no.1, S.55-70

Year

1993

Abstract

Image coding aims to represent an image with as few bits as possible while preserving the quality and intelligibility required for the application. Addresses the problem of stochastic generation of the codebook for coding images using vector quantization. The codebook is modelled according to some previous model defined for the image to be encoded and then the training set is generated according to the same model and not according to some specific data sequence. Two different models are presented that prove the validity of this approach. Results ranging from 0,2 to 0,8 bits/pixel are shown for still images. Makes comparisons with standard JPEG

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