Optimum Feedback Quantizers for Laplacian Pyramids (Contributo in atti di convegno)

Type
Label
  • Optimum Feedback Quantizers for Laplacian Pyramids (Contributo in atti di convegno) (literal)
Anno
  • 1996-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1109/DSPWS.1996.555445 (literal)
Alternative label
  • Bruno Aiazzi; Luciano Alparone; Stefano Baronti; Franco Lotti (1996)
    Optimum Feedback Quantizers for Laplacian Pyramids
    in 1996 IEEE Digital Signal Processing Workshop, Loen, Norvegia, 1-4 Settembre 1996
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bruno Aiazzi; Luciano Alparone; Stefano Baronti; Franco Lotti (literal)
Pagina inizio
  • 1 (literal)
Pagina fine
  • 4 (literal)
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  • http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=555445 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Proceedings of Seventh IEEE Digital Signal Processing Workshop (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Google Scholar (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Nello Carrara Research Institute on Electromagnetic Waves IROE - CNR, Via Panciatichi, 64 - 50127 Florence, Italy Department of Electronic Engineering, University of Florence, Florence, Italy, Via S. Marta, 3 - 50139 Florence, Italy Nello Carrara Research Institute on Electromagnetic Waves IROE - CNR, Via Panciatichi, 64 - 50127 Florence, Italy Nello Carrara Research Institute on Electromagnetic Waves IROE - CNR, Via Panciatichi, 64 - 50127 Florence, Italy (literal)
Titolo
  • Optimum Feedback Quantizers for Laplacian Pyramids (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 0-7803-3629-1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
  • J. M. Lervik; P. Waldemar (literal)
Abstract
  • This paper addresses the problem of distortion allocation in a multi-layer image encoder based on an enhanced Laplacian pyramid with quantization noise feedback. An entropy-minimizing optimum quantization strategy is obtained by defining an equivalent memoryless pyramid entropy that, for the case of quantization feedback, is a function of rates and distortions at each pyramid level. By also modelling the propagation of quantization errors throughout the pyramid, a compact closed-form formulation is derived for the equivalent entropy. Such a model yields the optimum amounts of distortion at the various resolution layers, regardless of the first-order distributions of the data. Results are reported in terms of entropy for a Laplacian pdf varying with the quantization step sizes and the adjustable parameters of the pyramid-generating filters. (literal)
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