An Effective Method for Initialization of Lloyd-Max's Algorithm of Optimal Scalar Quantization for Laplacian Source

Authors:
Zoran Peric;Jelena Nikolic
Affiliations:
Faculty of Electronic Engineering, University of Nis, Aleksandra Medvedeva 14, 18000 Nis, Serbia and Montenegro, e-mail: peric@ elfak.ni.ac.yu, njelene@elfak.ni.ac.yu;Faculty of Electronic Engineering, University of Nis, Aleksandra Medvedeva 14, 18000 Nis, Serbia and Montenegro, e-mail: peric@ elfak.ni.ac.yu, njelene@elfak.ni.ac.yu
Venue:
Informatica
Year:
2007

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Abstract

In this paper an exact and complete analysis of the Lloyd-Max's algorithm and its initialization is carried out. An effective method for initialization of Lloyd-Max's algorithm of optimal scalar quantization for Laplacian source is proposed. The proposed method is very simple method of making an intelligent guess of the starting points for the iterative Lloyd-Max's algorithm. Namely, the initial values for the iterative Lloyd-Max's algorithm can be determined by the values of compandor's parameters. It is demonstrated that by following that logic the proposed method provides a rapid convergence of the Lloyd-Max's algorithm.