NDLI: A novel bi-directional diffusion image interpolation model with two layer constraint

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A novel bi-directional diffusion image interpolation model with two layer constraint

Content Provider	IEEE Xplore Digital Library
Author	Jiying Wu Qiuqi Ruan
Copyright Year	2006
Description	Author affiliation: Inst. of Inf. Sci., Beijing Jiaotong Univ. (Jiying Wu; Qiuqi Ruan)
Abstract	In this paper a novel bi-directional diffusion model with two layer constraint is proposed. The new model can smooth the artifacts and jaggies in the interpolated image and make image clearly by enhancing the edge. It considers both along and orthogonal to edge diffusion, and the orthogonal to edge backward diffusion enhances the edge in image. There is severe block effect in the interpolated image, if the orthogonal to edge diffusion is directly adopted in the interpolated image, jaggies will be strengthened. With the two layer constraint, the gradient magnitude of original un-interpolated image is mapped to the interpolated image as a sign matrix. The selection of diffusion direction is controlled by the mapped sign matrix; only the edge pixel in original image is enhanced when interpolating. Using the novel model proposed in this paper, processed image is clearer than that processed by the along edge diffusion model; with the two layer constraint, jaggies are diminished and the image is smoothed
File Size	697139
File Format	PDF
ISBN	0780397363
DOI	10.1109/ICOSP.2006.345609
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bidirectional control Interpolation Equations Pixel Image resolution Level set Anisotropic magnetoresistance Polynomials Information science Electronic mail
Content Type	Text
Resource Type	Article

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