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Design of Encoder for Two-Dimensional Laplace Source QuantizerZoran H. PERIC, Milan GRUJIC, Srdjan BOGOSAVLJEVIC
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uniform quantization, two-dimensional Laplace source, granular distortion, total distortion, encoder, design of encoder
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About this article
Date of Publication: 2003-04-02
Volume 3, Issue 2, Year 2003, On page(s): 6 - 11
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: Not assigned
In this paper simple and complete asymptotical analysis is given for a piecewise uniform product two-dimensional Laplace source quantizer (PUPTDLSQ) with respect to mean-square error (mse). It is given one than possible constructions of encoder for same quantizer, too. PUPTDLSQ is based on uniform product two-dimensional Laplace source quantizers. Product quantizer optimality conditions and all main equation for a number of phase divisions and optimal number of levels for each partition are presented. These systems, although not optimal, may have asymptotic performance arbitrarily close to the optimum. PUPTDLSQ has complexity implementation between optimal nonuniform quantization (NQ) and uniform product quantization (UPQ). Further more, their analysis and implementation can be simpler than those of optimal systems.
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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