The generalized Haar-Walsh transform
The generalized Haar-Walsh transform
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DOI:
10.1109/ssp.2014.6884678
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发表时间:
2014-06
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通讯作者:
Jeff Irion;N. Saito
中科院分区:
文献类型:
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作者:
Jeff Irion;N. Saito
We introduce a novel multiscale transform for signals on graphs which is a generalization of the classical Haar and Walsh-Hadamard Transforms. Using a recursive partitioning of the graph and successive averaging and differencing operations, our transform generates an overcomplete dictionary of orthonormal bases. We describe how to adapt the classical best-basis search algorithm to this setting, and show results from preliminary denoising experiments.