NDLI: Edge-forming methods for color image zooming

Content Provider	IEEE Xplore Digital Library
Author	Cha, Y. Seongjai Kim
Copyright Year	1992
Abstract	This paper introduces edge-forming schemes for image zooming of color images by general magnification factors. In order to remove/reduce artifacts arising in image interpolation, such as image blur and the checkerboard effect, an edge-forming method is suggested to be applied as a postprocess of standard interpolation methods. The method is based on nonconvex nonlinear partial differential equations. The equations are carefully discretized, incorporating numerical schemes of anisotropic diffusion, to be able to form reliable edges satisfactorily. The alternating direction implicit (ADI) method is employed for an efficient simulation of the model. It has been numerically verified that the resulting algorithm can form clear edges in 2 to 3 ADI iterations. Various results are given to show th effectiveness and reliability of the algorithm.
Sponsorship	IEEE Signal Processing Society
Page Count	9
File Size	885649
Starting Page	2315
Ending Page	2323
File Format	PDF
ISSN	10577149
Volume Number	15
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Color Interpolation Anisotropic magnetoresistance Partial differential equations Kernel Image resolution Noise reduction Mathematics Nonlinear equations Discrete transforms interpolation Anisotropic diffusion checkerboard effect edge forming image zooming
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Software

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