Um Novo Algoritmo para Atribuição de Índices: Avaliação em Quantização Vetorial de Imagens

Authors

  • E.A Lima
  • G.G.M. Melo
  • W.T.A. Lopes
  • F. Madeiro

DOI:

https://doi.org/10.5540/tema.2009.010.02.0167

Abstract

A quantização vetorial (QV) tem sido amplamente utilizada em sistemas de codificação de imagens, permitindo a obtenção de taxas de compressão elevadas. No entanto, a QV é muito sensível a erros de canal, que podem levar a bloqueamentos espúrios muito incômodos nas imagens reconstruídas. No presente trabalho, é apresentado um novo método de atribuição de índices aos vetores-código, baseado em otimização discreta no espaço das permutações, visando tornar a QV mais robusta aos erros de canal.

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Published

2009-06-01

How to Cite

Lima, E., Melo, G., Lopes, W., & Madeiro, F. (2009). Um Novo Algoritmo para Atribuição de Índices: Avaliação em Quantização Vetorial de Imagens. Trends in Computational and Applied Mathematics, 10(2), 167–177. https://doi.org/10.5540/tema.2009.010.02.0167

Issue

Vol. 10 No. 2 (2009)

Section

Original Article

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