Color image interpolation using vector rational filters

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

doi:10.1117/12.304604

6 April 1998 Color image interpolation using vector rational filters

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

Proceedings Volume 3304, Nonlinear Image Processing IX; (1998) https://doi.org/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).

Citation Download Citation

Faouzi Alaya Cheikh, Lazhar Khriji, Moncef Gabbouj, and Giovanni Ramponi "Color image interpolation using vector rational filters", Proc. SPIE 3304, Nonlinear Image Processing IX, (6 April 1998); https://doi.org/10.1117/12.304604

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