A New Orientation-Adaptive Interpolation Method

Author

Wang, Qing ; Ward, Rabab Kreidieh

Author_Institution

Microsoft Corp., Redmond, WA

Volume

16

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

889

Lastpage

900

Abstract

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

Keywords

image resolution; interpolation; bilinear interpolation; bilinearly interpolating child pixel; image interpolation; isophote-oriented interpolation method; orientation-adaptive interpolation method; zigzagging artifacts; Advertising; Degradation; Digital photography; Image analysis; Interpolation; Kernel; Partial differential equations; Pixel; Printing; TV; Curvature; directional interpolation; image interpolation; isophote; zigzagging; Algorithms; Artifacts; Image Enhancement; Image Interpretation, Computer-Assisted; Numerical Analysis, Computer-Assisted; Reproducibility of Results; Sensitivity and Specificity;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/TIP.2007.891794

Filename

4130438