Color image interpolation using vector rational filters

Faouzi Alaya Cheikh, Lazhar Khriji, Moncef Gabbouj, Giovanni Ramponi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Rational filters are extended to multichannel signal processing and applied to the image interpolation problem. The proposed nonlinear interpolator exhibits desirable properties, such as, edge and details preservation. In this approach the pixels of the color image are considered as 3-component vectors in the color space. Therefore, the inherent correlation which exists between the different color components is not ignored; thus, leading to better image quality than those obtained by component-wise processing. Simulations show that the resulting edges obtained using vector rational filters (VRF) are free from blockiness and jaggedness, which are usually present in images interpolated using especially linear, but also some nonlinear techniques, e.g. vector median hybrid filters (VFMH).

Original languageEnglish
Pages (from-to)242-249
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3304
DOIs
Publication statusPublished - 1998

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Keywords

  • Color
  • Filter
  • Image
  • Interpolation
  • Multichannel
  • Nonlinear
  • Quincunx
  • R ectangular
  • Rational

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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