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http://dx.doi.org/10.6109/jkiice.2013.17.10.2425

Shifted Linear Interpolation with an Image-Dependent Parameter  

Park, Do-Young (Department of Computer Engineering, Sangmyung University)
Yoo, Hoon (Department of Digital Media, Sangmyung University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.17, no.10, 2013 , pp. 2425-2430 More about this Journal
Abstract
This paper presents an shifted linear interpolation method with an image-dependent parameter. The previous shifted linear interpolation proposed the optimal shift parameter of 0.21, which is calculated by spectrum analysis of the shifted linear interpolation kernel. However, the parameter can be different if we takes an input image spectrum into account. Thus, we introduce an image-dependent parameter. An experiment shows the best shift parameter is 0.19 in average for real images. Also, simulation results indicate the proposed method is superior to the existing shifted linear interpolation as well as conventional methods such as linear interpolation and cubic convolution interpolation in terms of the subjective and objective image quality.
Keywords
Linear interpolation; Shifted linear interpolation; Image-dependent parameters;
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