engleski

Application of CCC-Schoenberg operators on image resampling

Resampling of digital images is an essential part of image processing. The most efficient and sufficiently accurate image resampling techniques can produce spurious oscillations near sharp transitions of color when upsampling. To improve that, we use shape preserving approximations by CCC-splines for the histoploation process, applied dimension by dimension, see Reference [1]. For these approximations, instead of using the co-monotone and co-convex tension spline interpolations, we introduce approximations by CCC-Schoenberg operators based on the variable degree polynomial splines. The algorithm is simpler than the one from Reference [1], but it obtains the similar image quality. References: [1] T. Bosner, B. Crnković and J. Škifić, Tension splines with application on image resampling, Math. Commun. 19 (2014), 517-529.

Image Resampling ; Variable degree polynomial splines ; Histospline ; CCC–Schoenberg operator

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