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Optical Engineering

Rapid hybrid interpolation methods
Author(s): Chulhee Lee; Seongduk Cho; Wonseok Ahn; Kwanghoon Sohn
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Paper Abstract

We propose rapid hybrid interpolation methods that employ more than one interpolation algorithm, and choose the most appropriate interpolation algorithm that provides high-quality images with a minimum number of operations. Although a complex interpolation algorithm generally outperforms a simple interpolation algorithm, the differences are negligible for most pixels, with major differences occurring around edges. Thus, in the proposed algorithm, we first apply a test to predict which interpolation is most appropriate for a given pixel in terms of complexity and performance. Then, a simple interpolation algorithm is used for pixels for which the simple interpolation algorithm provides acceptable performances, and a complex interpolation algorithm is used for pixels for which the complex interpolation algorithm significantly outperforms the simple interpolation algorithm. Consequently, it is possible to obtain high-quality images without significantly increasing the number of operations.

Paper Details

Date Published: 1 May 2004
PDF: 12 pages
Opt. Eng. 43(5) doi: 10.1117/1.1666866
Published in: Optical Engineering Volume 43, Issue 5
Show Author Affiliations
Chulhee Lee, Yonsei Univ. (South Korea)
Seongduk Cho, Yonsei Univ. (South Korea)
Wonseok Ahn, Yonsei Univ. (South Korea)
Kwanghoon Sohn, Yonsei Univ. (South Korea)


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