Goyal, Vivek K.Zhuang, JunVetterli, Martin2005-04-182005-04-182005-04-18200010.1109/18.850706https://infoscience.epfl.ch/handle/20.500.14299/212790WOS:0000882062000453071The Karhunen–Loève transform (KLT) is optimal for trans- form 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.dithered quantizationlossy data compressiontransform codinguniversal source codingtext::journal::journal article::research article