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Journal of Electronic Imaging • Open Access

Image resolution upscaling in the wavelet domain using directional cycle spinning
Author(s): A. Temizel; Theodore Vlachos

Paper Abstract

Cycle spinning, a technique mainly used for wavelet denoising, has also been shown to be successful toward image resolution upscaling in the wavelet domain. We propose a directional variant of the cycle spinning methodology. We obtain estimates of local edge orientation from a wavelet decomposition of the available low-resolution image and use this information to influence the choice of cycle spinning parameters that are employed for resolution upscaling. Our experimental results show that the proposed method outperforms competing methods for a wide range of images offering modest but consistent improvements both in objective as well as subjective terms. Lower computational complexity compared to the conventional cycle spinning is also demonstrated.

Paper Details

Date Published: 1 October 2005
PDF: 3 pages
J. Electron. Imag. 14(4) 040501 doi: 10.1117/1.2061247
Published in: Journal of Electronic Imaging Volume 14, Issue 4
Show Author Affiliations
A. Temizel, Univ. of Hertfordshire (United Kingdom)
Theodore Vlachos, BBC Research and Development (United Kingdom)

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