Optimal pr-qmf design for subband image coding

H. Caglar, Y. Liu, A. N. Akansu

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A multivariable optimization problem is set to design 2-band PR-QMFs. The energy compaction, aliasing energy, unit step response, zero-mean high-pass filter, uncorrelated subband signals, constrained nonlinearity of the phase-response, and the given input statistics are simultaneously considered in the proposed optimal filter design technique. A set of optimal PR-QMF solutions and the optimization criteria along with their objective performance is given for comparison. This PR-QMF design approach leads to an input driven adaptive subband filter bank structure. It is shown that the optimal filters objectively outperform the well known fixed PR-QMFs in the literature. The proposed PR-QMF design technique provides the mathematical tools for subjective performance improvements in subband image and video coding applications.

Original languageEnglish (US)
Pages (from-to)242-253
Number of pages12
JournalJournal of Visual Communication and Image Representation
Volume4
Issue number3
DOIs
StatePublished - Sep 1993

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Media Technology
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering

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