JPEG2000 low complexity allocation method of quality layers

  • Authors:
  • Francesc Aulí-Llinàs;Joan Serra-Sagristà;Carles Rúbies-Feijoo;Lluís Donoso-Bach

  • Affiliations:
  • Department of Information and Communications Engineering, Universitat Autònoma de Barcelona, ETSE, Cerdanyola del Vallès, Spain;Department of Information and Communications Engineering, Universitat Autònoma de Barcelona, ETSE, Cerdanyola del Vallès, Spain;UDIAT Centre de Diagnòstic, Corporació Sanitària Parc Taulí, Sabadell, Spain;UDIAT Centre de Diagnòstic, Corporació Sanitària Parc Taulí, Sabadell, Spain

  • Venue:
  • KES'07/WIRN'07 Proceedings of the 11th international conference, KES 2007 and XVII Italian workshop on neural networks conference on Knowledge-based intelligent information and engineering systems: Part I
  • Year:
  • 2007

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Abstract

An important issue of JPEG2000 implementations is the allocation of quality layers, since it determines the optimality of the code-stream in terms of rate-distortion. Common strategies of quality layers allocation use both rate-distortion optimization and rate allocation methods, requiring the user to specify the number of quality layers and a distribution function for their rate allocation. This paper presents a new allocation method of quality layers that, neither needing rate-distortion optimization nor requiring user specifications, constructs a near-optimal code-stream in terms of rate-distortion. Besides, the computational cost of the proposed method is in practice negligible, and its application helps to reduce the computational load of the JPEG2000 encoder.