Conference
Lagrangian Optimization of Two-Description Scalar Quantizers
Abstract
In this paper, we study the problem of optimal design of balanced two-description fixed-rate scalar quantizer (2DSQ) under the constraint of convex codecells. Using a graph-based approach to model the problem, we show that the minimum expected distortion of the 2DSQ is a convex function of the number of codecells in the side quantizers. This property allows the problem to be solved by Lagrangian minimization for which the optimal Lagrangian …
Authors
Dumitrescu S; Wu X
Volume
53
Pagination
pp. 3990-4012
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publication Date
November 1, 2007
DOI
10.1109/tit.2007.907498
Conference proceedings
IEEE Transactions on Information Theory
Issue
11
ISSN
0018-9448