Original scientific paper

Tension splines with application on image resampling

Tina Bosner ; Department of Applied Mathematics, Faculty of Science, University of Zagreb, Zagreb, Croatia
Bojan Crnković ; Department of Mathematics, University of Rijeka, Rijeka, Croatia
Jerko Škifić ; Department for Fluid Mechanics and Computational Engineering, Faculty of Engineering, University of Rijeka, rijeka, Croatia

Abstract

Digital raster images often need to be represented in higher and lower resolutions. Resampling of digital images is an essential part of image processing. Most efficient and sufficiently accurate image resampling techniques can produce spurious oscillations
near sharp transitions of color. To improve that, we introduce tension splines applied dimension by dimension.
The presented tension spline procedure provides an elegant solution to the image resampling by constructing a smooth approximation with sharp non-oscillatory resolution of discontinuities. The numerical results on real digital images are given to show effectiveness of the
proposed algorithm.

Keywords

image zooming; image resampling; tension spline; interpolation; histospline

Hrčak ID:

130113

URI

https://hrcak.srce.hr/130113

Publication date:

10.12.2014.

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