Multi-target Detection with an Arbitrary Spacing Distribution.
Multi-target Detection with an Arbitrary Spacing Distribution.
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DOI:
10.1109/tsp.2020.2975943
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Singer A
中科院分区:
文献类型:
--
作者:
Lan TY;Bendory T;Boumal N;Singer A
Motivated by the structure reconstruction problem in single-particle cryo-electron microscopy, we consider the multi-target detection model, where multiple copies of a target signal occur at unknown locations in a long measurement, further corrupted by additive Gaussian noise. At low noise levels, one can easily detect the signal occurrences and estimate the signal by averaging. However, in the presence of high noise, which is the focus of this paper, detection is impossible. Here, we propose two approaches—autocorrelation analysis and an approximate expectation maximization algorithm—to reconstruct the signal without the need to detect signal occurrences in the measurement. In particular, our methods apply to an arbitrary spacing distribution of signal occurrences. We demonstrate reconstructions with synthetic data and empirically show that the sample complexity of both methods scales as SNR−3 in the low SNR regime.
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影响因子:
1.2
作者:
Beinert, Robert;Plonka, Gerlind
通讯作者:
Plonka, Gerlind
DOI:
10.1006/meth.1999.0873
发表时间:
1999-11-01
期刊:
METHODS-A COMPANION TO METHODS IN ENZYMOLOGY
影响因子:
--
作者:
McNally, JG;Karpova, T;Conchello, JA
通讯作者:
Conchello, JA
影响因子:
6.2
作者:
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通讯作者:
Lee, Seungyong
影响因子:
6.1
作者:
HENDERSON, R
通讯作者:
HENDERSON, R
影响因子:
5.4
作者:
Aguerrebere, Cecilia;Delbracio, Mauricio;Sapiro, Guillermo
通讯作者:
Sapiro, Guillermo