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

  • Naoki Ono Kyushu University
  • Kiichi Urahama Kyushu University

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.

Author Biographies

Naoki Ono, Kyushu University
Faculty of Design
Kiichi Urahama, Kyushu University
Faculty of Design

References

S.Ghoshi, "A new signal processing method for video", MMSys '12 Proceedings of the 3rd Multimedia Systems Conference, pp. 47-52, 2012.

N. Ono and K. Urahama, "Sharpening Interpolated Image by Using Cube of Pixel Difference and Evaluation in Frequency Domain", Journal of the Institute of Industrial Applications Engineers, Vol.4, No.2, pp.56-60, 2016.

C.E.Duchon, "Lanczos Filtering in one and Two Dimensions", Journal of Applied Meteorology, vol.18, pp.1016-1022, 1979.

Published
2018-01-25
How to Cite
Ono, N., & Urahama, K. (2018). Comparing Interpolations in Frequency Domain and Improvement of Interpolated Images by Using Cube of Pixel Differencs. Journal of the Institute of Industrial Applications Engineers, 6(1), 9. https://doi.org/10.12792/jiiae.6.9
Section
Articles