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📋📋📋本文目录如下:🎁🎁🎁
目录
💥1 概述
NLM 是一种基于补丁的方法,它是瞬态保留的。在ECG中,这意味着可以保留信号峰值,同时抑制其他高频噪声。该方法的特点在于通过对非局部信息的利用,在去噪过程中保持了信号的瞬态特性。详细内容可参见论文“非局部意味着心电信号的去噪”,其中深入探讨了NLM方法在心电信号处理中的应用,特别是在保留重要信号特征的同时抑制噪声对信号质量的干扰,为ECG信号的有效处理提供了一种有力的工具。
📚2 运行结果
部分代码:
% EXAMPLES of calling NLM code
% run portion of waveform 100 from Physionet database
% www.physionet.org
% Physionet citation:
% Goldberger AL, Amaral LAN, Glass L, Hausdorff JM,
% Ivanov PCh, Mark RG, Mietus JE, Moody GB, Peng CK,
% Stanley HE. PhysioBank, PhysioToolkit, and PhysioNet:
% Components of a New Research Resource for Complex Physiologic
% Signals. Circulation 101(23):e215-e220 [Circulation Electronic
% 2000 (June 13). PMID: 10851218; doi: 10.1161/01.CIR.101.23.e215
% Algorithm reference:
% Brian Tracey and Eric Miller, "Nonlocal means denoising of ECG signals",
% IEEE Transactions on Biomedical Engineering, Vol 59, No 9, Sept
% 2012, pages 2383-2386.
% load the data
ecg100=load('ecg100.txt');
ix=1:length(ecg100); % vector of time samples, for plotting
% set parameters - see Tracey & Miller for a discussion
PatchHW=10; % patch half-width; ~ size of smallest feature, in samples
P = 1000; % neighborhood search width; wider=more computation but more
% channces to find a similar patch
🎉3 参考文献
文章中一些内容引自网络,会注明出处或引用为参考文献,难免有未尽之处,如有不妥,请随时联系删除。
[1]Jinhee K ,Joo J ,Hwan Y J , et al. Impact of an Emergency Department Isolation Policy for Patients With Suspected COVID-19 on Door-to-Electrocardiography Time and Clinical Outcomes in Patients With Acute Myocardial Infarction.[J]. Journal of Korean medical science,2023,38(50).
[2]A L F ,M D J ,Israel J C , et al. The Utility of a Novel Electrocardiogram Patch Using Dry Electrodes Technology for Arrhythmia Detection During Exercise and Prolonged Monitoring: Proof-of-Concept Study.[J]. JMIR formative research,2023,7.