Simplified noise model parameter estimation for signal-dependent noise
Simplified noise model parameter estimation for signal-dependent noise
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DOI:
10.1016/j.sigpro.2013.10.002
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发表时间:
2014-03-01
影响因子:
4.4
通讯作者:
Eom, Il Kyu
中科院分区:
文献类型:
--
作者:
Jeong, Bo Gyu;Kim, Byoung Chul;Eom, Il Kyu
In this paper, we present a noise parameter estimation method using a simplified signal-dependent noise model. The generic Poisson-Gaussian noise model is simplified to a Gaussian-Gaussian noise model. From the simplified noise model, we experimentally verify that the value obtained by the robust median estimator is almost the same as the mean of the noise standard deviation. Based on this property, the noise model parameters are estimated by the least square method. Simulation results show that the estimation performance using our proposed algorithm is compatible with the performance of the existing method. Our method can generate good parameter estimation results with reduced computational complexity. (C) 2013 Elsevier B.V. All rights reserved.