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arXiv 1303.2685cs.CV
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双边滤波器:图谱解释和扩展

Bilateral Filter: Graph Spectral Interpretation and Extensions

University of Southern California(南加州大学)

Akshay Gadde, Sunil K Narang, Antonio Ortega

摘要:

在本文中,我们研究了双边滤波器提出的Tomasi和Manduchi,作为一个谱域变换定义的加权图。该图形的节点表示图像中的像素,并且在节点上定义的图形信号表示强度值。图中的边缘权重对应于双边滤波器系数,因此是数据自适应的。图的谱是由图的拉普拉斯矩阵的特征值和特征向量定义的。我们使用这种频谱解释概括双边滤波器,并提出更灵活和应用特定的双边滤波器的频谱设计。我们表明,这些频谱滤波器可以实现k-迭代双边滤波操作,不需要昂贵的拉普拉斯矩阵对角化。

英文摘要:

In this paper we study the bilateral filter proposed by Tomasi and Manduchi, as a spectral domain transform defined on a weighted graph. The nodes of this graph represent the pixels in the image and a graph signal defined on the nodes represents the intensity values. Edge weights in the graph correspond to the bilateral filter coefficients and hence are data adaptive. Spectrum of a graph is defined in terms of the eigenvalues and eigenvectors of the graph Laplacian matrix. We use this spectral interpretation to generalize the bilateral filter and propose more flexible and application specific spectral designs of bilateral-like filters. We show that these spectral filters can be implemented with k-iterative bilateral filtering operations and do not require expensive diagonalization of the Laplacian matrix.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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