Tree-Structured Multiple Description Coding
Journal of VLSI signal processing systems for signal, image and video technology - Tập 33 - Trang 287-294 - 2003
Tóm tắt
Multiple description coding aims at transmitting two mutually refinable descriptions of a signal on two different communication channels. It is successfully applied to transmission of sound and images on diversity systems or packet-switched networks. We present novel algorithms for the design of multiply descriptive tree-structured vector quantizers with linear encoding complexity that improve on our previously published methods. These algorithms allow for both the rates and distortions constraints in a natural way and are shown to yield quantizers that are competitive with full-search codes in terms of rate-distortion performance. We also present a generalization of the scheme to more than two channels.
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