RECOVERY OF NOISY POINTS ON BANDLIMITED SURFACES: KERNEL METHODS RE-EXPLAINED.
RECOVERY OF NOISY POINTS ON BANDLIMITED SURFACES: KERNEL METHODS RE-EXPLAINED.
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DOI:
10.1109/icassp.2018.8462186
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发表时间:
2018-04
期刊:
影响因子:
--
通讯作者:
Jacob M
中科院分区:
文献类型:
--
作者:
Poddar S;Jacob M
We introduce a continuous domain framework for the recovery of points on a surface in high dimensional space, represented as the zero-level set of a bandlimited function. We show that the exponential maps of the points on the surface satisfy annihilation relations, implying that they lie in a finite dimensional subspace. The subspace properties are used to derive sampling conditions, which will guarantee the perfect recovery of the surface from finite number of points. We rely on nuclear norm minimization to exploit the low-rank structure of the maps to recover the points from noisy measurements. Since the direct estimation of the surface is computationally prohibitive in very high dimensions, we propose an iterative reweighted algorithm using the “kernel trick”. The iterative algorithm reveals deep links to Laplacian based algorithms widely used in graph signal processing; the theory and the sampling conditions can serve as a basis for discrete-continuous domain processing of signals on a graph.
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影响因子:
2.1
作者:
Ongie G;Jacob M
通讯作者:
Jacob M
影响因子:
3
作者:
Candes, Emmanuel J.;Fernandez-Granda, Carlos
通讯作者:
Fernandez-Granda, Carlos
影响因子:
10.6
作者:
Danielyan, Aram;Katkovnik, Vladimir;Egiazarian, Karen
通讯作者:
Egiazarian, Karen
DOI:
10.1109/tsp.2017.2750111
发表时间:
2018-01
期刊:
IEEE transactions on signal processing : a publication of the IEEE Signal Processing Society
影响因子:
--
作者:
Ongie G;Biswas S;Jacob M
通讯作者:
Jacob M
影响因子:
1.6
作者:
Gilboa, Guy;Osher, Stanley
通讯作者:
Osher, Stanley