Image interpolation using cosine-sine modulated filter bank
Image interpolation using cosine-sine modulated filter bank
复制标题
DOI：
10.1109/lascas.2010.7410128
复制
发表时间：
2010-02
期刊：
影响因子：
--
通讯作者：
S. Iwamura;Seisuke Kyochi;M. Ikehara;Naoto Kaneko
中科院分区：
文献类型：
--
作者：
S. Iwamura;Seisuke Kyochi;M. Ikehara;Naoto Kaneko
提出了一种基于方向感知变换的图像插值方法。余弦-正弦调制滤波器组（CSMFB）可以看作是一种替代的双树复小波变换，因此具有丰富的方向选择性。我们的插值过程包括两个阶段。首先，我们使用4通道CSMFB从输入图像生成低频图像和六个方向图像。然后沿每个方向沿着对每个图像进行插值。仿真结果表明，我们的方法可以产生高视觉质量的图像，并改善了一些伪影。此外，我们的方法是相当可行的，从硬件实现的角度来看，因为没有分支过程。
This paper proposes a new image interpolation technique by using direction-aware transform. In literature, it is known that Cosine-Sine modulated filter banks (CSMFB) can be regarded as alternative dual-tree complex wavelet transform, therefore, CSMFB has rich directional selectivity. Our interpolation procedure consists of two stages. First, we generate low frequency image and six directional images from the input image by using 4-channel CSMFB. Then each image is interpolated along with each direction. The simulation results show that our method can produce high visual quality images and improves some artifacts. Moreover, our method is quite feasible from the view point of hardware implementation since there is no branching procedure.