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Volume: 18 | Article ID: art00061_2
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Dependence of Image Quality on the Degree of Edge Enhancement
Hironori Hayashi
Pranchalee Ratanasakornchai
Hu Mei
Yasushi Hoshino
  DOI :  10.2352/ISSN.2169-4451.2002.18.1.art00061_2  Published Online :  January 2002
Abstract

Edge enhancement is an important image processing in imaging systems. When the enhancement is insufficient, we feel the image is out of focus, but when it is too strong, we feel unnatural. So, the optimum degree of the edge enhancement is investigated by using subjective evaluation. Several types of image are prepared by digital still camera (D1, Nikon). The image capturing conditions are no edge enhancement, no image data compression and taking care of low noise. The edge enhancement is carried out on adjusting neighboring 4 pixels according to Laplacian operation. The degree of the edge enhancement is adjusted by controlling the intensity of Laplacian operation. In every images, the image quality is improved by certain degree of edge enhancement. It is observed that the optimum degree of edge enhancement shows difference among the categories of images.

Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/ISSN.2169-4451.2002.18.1.art00061_2
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Hironori Hayashi, Pranchalee Ratanasakornchai, Hu Mei, Yasushi Hoshino, "Dependence of Image Quality on the Degree of Edge Enhancement"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP18),  2002,  pp 678 - 681,  https://doi.org/10.2352/ISSN.2169-4451.2002.18.1.art00061_2

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Copyright © Society for Imaging Science and Technology 2002
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NIP & Digital Fabrication Conference
nip digi fabric conf
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Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2169-4451(20020101)2002:2L.678;1-
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Articles
Dependence of Image Quality on the Degree of Edge Enhancement
HayashiHironori
RatanasakornchaiPranchalee
MeiHu
HoshinoYasushi
01012002
2002
2
678
681
2002
Edge enhancement is an important image processing in imaging systems. When the enhancement is insufficient, we feel the image is out of focus, but when it is too strong, we feel unnatural. So, the optimum degree of the edge enhancement is investigated by using subjective evaluation. Several types of image are prepared by digital still camera (D1, Nikon). The image capturing conditions are no edge enhancement, no image data compression and taking care of low noise. The edge enhancement is carried out on adjusting neighboring 4 pixels according to Laplacian operation. The degree of the edge enhancement is adjusted by controlling the intensity of Laplacian operation. In every images, the image quality is improved by certain degree of edge enhancement. It is observed that the optimum degree of edge enhancement shows difference among the categories of images.