Satti, S., Deligiannis, N., Munteanu, A., Schelkens, P., & Cornelis, J. (2012). An Optimization Algorithm for Scalable Multiple Description Scalar Quantizers. In 2012 International Symposium on Information Theory and its Applications (ISITA2012)

@inproceedings{e9620237dedc49e4ab4df684bec6e0bf,
title = "An Optimization Algorithm for Scalable Multiple Description Scalar Quantizers",
abstract = "A scalable multiple description scalar quantizer (SMDSQ) is a quantization based framework used for scalable multiple description coding (SMDC). In this paper, we introduce a novel generalization of the Lloyd-Max algorithm to realize locally optimal SMDSQs. Both level-constrained and entropy-constrained cases are considered. For both cases, locally optimal solutions are realized by iterative execution of the centroid and the modified nearest-neighbor conditions. Experimental results confirm that, for a zero-mean unit-variance Gaussian source, the optimization algorithm enables a significant reduction in distortion for the level-constrained case. Moreover, relatively lesser but still significant distortion-rate (D-R) gains are viable for the entropy-constrained case. It is shown that, for a packetized transmission of Gaussian as well as wavelet-decomposed images, the obtained optimization gains translate into an average improvement in the decoder's signal-to-noise-ratio (SNR) for a wide range of packet loss rates.",
keywords = "Multiple description coding, scalable multiple description quantizer, Quantizer optimization",
author = "Shahid Satti and Nikolaos Deligiannis and Adrian Munteanu and Peter Schelkens and Jan Cornelis",
year = "2012",
month = oct,
day = "28",
language = "English",
booktitle = "2012 International Symposium on Information Theory and its Applications (ISITA2012)",
note = "2012 International Symposium on Information Theory and its Applications (ISITA2012) ; Conference date: 28-10-2012 Through 31-10-2012",
}