Comparing Interpolations in Frequency Domain and Improvement of Interpolated Images by Using Cube of Pixel Differencs

Naoki Ono, Kiichi Urahama

Research output: Contribution to journalArticle

Abstract

We propose a method for improving image resolution. The method consists of an interpolation and a sharpening process. We research about some interpolations for producing high resolution images and show the properties of the interpolations in the frequency domain. Based on the research, we selected Lanczos function for the interpolation and applied the sharpening method which uses weighted sum of cubic operations of the pixel differences to the interpolated image. Experimental results also show that the sharpening with Lanczos interpolation gives clear high resolution images.
Original languageEnglish
Pages (from-to)9-16
Number of pages8
JournalJournal of the Institute of Industrial Applications Engineers
Volume6
Issue number1
Publication statusPublished - Jan 25 2018

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Interpolation
Pixels
Image resolution

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