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Title: Perceptual impact of edge sharpness in images
Authors: Lin, W.S.
Gai, Y.L.
Kassim, A.A. 
Issue Date: Apr-2006
Citation: Lin, W.S., Gai, Y.L., Kassim, A.A. (2006-04). Perceptual impact of edge sharpness in images. IEE Proceedings: Vision, Image and Signal Processing 153 (2) : 215-223. ScholarBank@NUS Repository.
Abstract: A method based upon subjective viewing tests to evaluate the perceptual impact of different extents of edge sharpness is presented and the most eye-pleasing sharpness (MEPS) for an image edge-sharpening process is derived. The findings with Laplacian of Gaussian edge-enhancement filter show that the baseline MEPS is about 2.6 times that of the local just-noticeable difference, and the actual MEPS is also dependent on the contrast increase in the surrounding areas. The proposed methodology can be used to determine the MEPS for a particular edge-enhancement process, and the resultant formulation for the perceptual impact of edge sharpness can be used for reference in control of edge enhancement, image reconstruction and de-blurring processing, as well as objective visual quality gauge.
Source Title: IEE Proceedings: Vision, Image and Signal Processing
ISSN: 1350245X
DOI: 10.1049/ip-vis:20050110
Appears in Collections:Staff Publications

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