H. Hartenstein, D. Saupe, K. U. Barthel. VQ-Encoding of luminance parameters in fractal coding schemes. In Proc. ICASSP 97, Munich, 1997.
This paper is concerned with the efficient storage of the luminance parameters in a fractal code by means of vector quantization (VQ). For a given image block (range) the collage error as a function of the luminance parameters is a quadratic function with ellipsoid contour lines. We demonstrate how these functions should be used in a optimal codebook design algorithm leading to a non-standard VQ-scheme. In addition we present results and an evaluation of this approach. The analysis of the quadratic error functions also provides guidance for optimal scalar quantization.
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@InProceedings{HaSaBa97,
Author = {Hartenstein, H. and Saupe, D. and Barthel, K. U.},
Title = {VQ-Encoding of luminance parameters in fractal coding schemes},
BookTitle = {Proc. ICASSP 97},
Address = {Munich},
Year = {1997}
}