A fast edge-directed interpolation algorithm

Authors:
Qichong Tian;Hao Wen;Chenhui Zhou;Wei Chen
Affiliations:
Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan, China;Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan, China;School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China;School of Computer Science and Technology, China University of Mining and Technology, Xuzhou, China
Venue:
ICONIP'12 Proceedings of the 19th international conference on Neural Information Processing - Volume Part III
Year:
2012

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Abstract

Image interpolation is a method of obtaining a high resolution image from a low resolution image, which is applied to many image processing procedures. In order to make the interpolated image having smooth edges and make the interpolation processing fast, we propose a fast edge-directed interpolation algorithm in this paper. The proposed method consists of three steps, the determination of nonedge pixels and edge pixels, the bilinear interpolation for nonedge pixels, and the edge-adaptive interpolation for edge pixels. The experimental results show that it outperforms some existing interpolation algorithms in terms of image quality and processing speed.