Edge-Forming Methods for Image Zooming

被引：0
作者：
Youngjoon Cha
Seongjai Kim
机构：
[1] Sejong University,Department of Applied Mathematics
[2] Mississippi State University,Department of Mathematics and Statistics
来源：
Journal of Mathematical Imaging and Vision | 2006年 / 25卷
关键词：
image zooming; interpolation; checkerboard effect; edge-forming;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The article is concerned with edge-forming methods to be applied as a post-process for image zooming. Image zooming via standard interpolation methods often produces the so-called checkerboard effect, in particular, when the magnification factor is large. In order to remove the artifact and to form reliable edges, a nonlinear semi-discrete model and its numerical algorithm are suggested along with anisotropic edge-forming numerical schemes. The algorithm is analyzed for stability and choices of parameters. For image zooming by integer factors, a few iterations of the algorithm can form clear and sharp edges for gray-scale images. Various examples are presented to show effectiveness and efficiency of the newly-suggested edge-forming strategy.
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页码：353 / 364
页数：11
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