A New Orientation-Adaptive Interpolation Method

TitleA New Orientation-Adaptive Interpolation Method
Publication TypeJournal Article
Year of Publication2007
AuthorsWang, Q., and R. K. Ward
JournalImage Processing, IEEE Transactions on
Pagination889 -900
Date Publishedapr.
KeywordsAlgorithms, Artifacts, bilinear interpolation, bilinearly interpolating child pixel, Computer-Assisted, image enhancement, image interpolation, Image Interpretation, image resolution, interpolation, isophote-oriented interpolation method, numerical analysis, orientation-adaptive interpolation method, Reproducibility of Results, Sensitivity and Specificity, zigzagging artifacts

We propose an isophote-oriented, orientation-adaptive interpolation method. The proposed method employs an interpolation kernel that adapts to the local orientation of isophotes, and the pixel values are obtained through an oriented, bilinear interpolation. We show that, by doing so, the curvature of the interpolated isophotes is reduced, and, thus, zigzagging artifacts are largely suppressed. Analysis and experiments show that images interpolated using the proposed method are visually pleasing and almost artifact free


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