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Optical Engineering • Open Access

Multidirectional edge-directed interpolation with region division for natural images
Author(s): Yujin Yun; Jonghyun Bae; Jaeseok Kim

Paper Abstract

A multidirectional edge-directed interpolation algorithm that features a region division method is proposed. In the proposed method, an interpolation pixel is newly modeled as a weighted sum of 12 neighboring pixels representing 12 different directions. Each weight is estimated by Wiener filter theory using geometric duality. The proposed method for dividing the interpolation region reduces the heavy computational complexity of the proposed model. Analyzing edge continuities, the model divides an image into three regions, and only strong edge regions are interpolated. Simulation results show that several directional edges are restored clearly in a subjective test, with fair performance in an objective test.

Paper Details

Date Published: 11 April 2012
PDF: 4 pages
Opt. Eng. 51(4) 040503 doi: 10.1117/1.OE.51.4.040503
Published in: Optical Engineering Volume 51, Issue 4
Show Author Affiliations
Yujin Yun, Yonsei Univ. (Korea, Republic of)
Jonghyun Bae, Yonsei Univ. (Korea, Republic of)
Jaeseok Kim, Yonsei Univ. (Korea, Republic of)

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