Transform coding with backward adaptive updates

Authors:
V. K. Goyal;J. Zhuang;M. Veiterli
Affiliations:
Math. of Commun. Res. Dept., Lucent Technol. Bell Labs., Murray Hill, NJ;-;-
Venue:
IEEE Transactions on Information Theory
Year:
2006

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Abstract

The Karhunen-Loeve transform (KLT) is optimal for transform coding of a Gaussian source. This is established for all scale-invariant quantizers, generalizing previous results. A backward adaptive technique for combating the data dependence of the KLT is proposed and analyzed. When the adapted transform converges to a KLT, the scheme is universal among transform coders. A variety of convergence results are proven