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Proceedings Paper

Color image interpolation using vector rational filters
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Paper 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).

Paper Details

Date Published: 6 April 1998
PDF: 8 pages
Proc. SPIE 3304, Nonlinear Image Processing IX, (6 April 1998); doi: 10.1117/12.304604
Show Author Affiliations
Faouzi Alaya Cheikh, Tampere Univ. of Technology (Finland)
Lazhar Khriji, Tampere Univ. of Technology (Tunisia)
Moncef Gabbouj, Tampere Univ. of Technology (Finland)
Giovanni Ramponi, Univ. of Trieste (Italy)

Published in SPIE Proceedings Vol. 3304:
Nonlinear Image Processing IX
Edward R. Dougherty; Jaakko T. Astola, Editor(s)

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