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Abstract:
In this paper we present a modification of the well-known LBG algorithm for
the generation of codebooks in vector quantization. Our algorithm, denoted as
the ILBG algorithm, reduces the codebook error of the LBG algorithm
drastically in typical applications. In our experiments we were able to
achieve up to 75\,\% reduction of the codebook error in only a few additional
iteration steps. In the context of lossy image compression this error
reduction leads to an increase of\/ 2--3~dB of the peak-signal-to-noise-ratio
(PSNR) in turn.
