6 April 1998 Color image interpolation using vector rational filters
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Proceedings Volume 3304, Nonlinear Image Processing IX; (1998); doi: 10.1117/12.304604
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States
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).
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Faouzi Alaya Cheikh, Lazhar Khriji, Moncef Gabbouj, Giovanni Ramponi, "Color image interpolation using vector rational filters", Proc. SPIE 3304, Nonlinear Image Processing IX, (6 April 1998); doi: 10.1117/12.304604; http://dx.doi.org/10.1117/12.304604
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KEYWORDS
Filtering (signal processing)

Image filtering

Digital filtering

Nonlinear filtering

Signal processing

Optical filters

Image processing

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