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

Fingerprint

Image Interpolation
Color Image
interpolation
Interpolation
Filter
Color
color
filters
Color Space
Interpolation Problem
Image Quality
Preservation
Image quality
repeaters
Signal Processing
Signal processing
Pixel
Pixels
signal processing
pixels

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

Cite this

Color image interpolation using vector rational filters. / Cheikh, Faouzi Alaya; Khriji, Lazhar; Gabbouj, Moncef; Ramponi, Giovanni.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 3304, 1998, p. 242-249.

Research output: Contribution to journalArticle

Cheikh, Faouzi Alaya ; Khriji, Lazhar ; Gabbouj, Moncef ; Ramponi, Giovanni. / Color image interpolation using vector rational filters. In: Proceedings of SPIE - The International Society for Optical Engineering. 1998 ; Vol. 3304. pp. 242-249.
@article{8f564973865c43eb956ad4cad3d27f23,
title = "Color image interpolation using vector rational filters",
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).",
keywords = "Color, Filter, Image, Interpolation, Multichannel, Nonlinear, Quincunx, R ectangular, Rational",
author = "Cheikh, {Faouzi Alaya} and Lazhar Khriji and Moncef Gabbouj and Giovanni Ramponi",
year = "1998",
doi = "10.1117/12.304604",
language = "English",
volume = "3304",
pages = "242--249",
journal = "Proceedings of SPIE - The International Society for Optical Engineering",
issn = "0277-786X",
publisher = "SPIE",

}

TY - JOUR

T1 - Color image interpolation using vector rational filters

AU - Cheikh, Faouzi Alaya

AU - Khriji, Lazhar

AU - Gabbouj, Moncef

AU - Ramponi, Giovanni

PY - 1998

Y1 - 1998

N2 - 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).

AB - 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).

KW - Color

KW - Filter

KW - Image

KW - Interpolation

KW - Multichannel

KW - Nonlinear

KW - Quincunx

KW - R ectangular

KW - Rational

UR - http://www.scopus.com/inward/record.url?scp=0032400615&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032400615&partnerID=8YFLogxK

U2 - 10.1117/12.304604

DO - 10.1117/12.304604

M3 - Article

VL - 3304

SP - 242

EP - 249

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

ER -