A new orientation-adaptive interpolation method
A new orientation-adaptive interpolation method
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DOI：
10.1109/tip.2007.891794
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发表时间：
2007-04-01
影响因子：
10.6
通讯作者：
Ward, Rabab Kreidieh
中科院分区：
文献类型：
--
作者：
Wang, Qing;Ward, Rabab Kreidieh
我们提出了一种定向的、定向自适应的插值方法。该方法采用一种适应同种异体局部方向的插值核，并通过有向双线性插值获得像素值。我们表明，通过这样做，内插的同光圈的曲率减少了，因此，锯齿形伪影很大程度上被抑制了。分析和实验表明，采用该方法插值的图像视觉效果良好，几乎没有伪影。
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.