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| 小波系数区域相关阈值滤噪方法研究 | |
| 引用本文： | 李关宾,仲红波,刘辉,郑建斌,陈立仁.小波系数区域相关阈值滤噪方法研究[J].分析试验室,2004,23(1):35-39. |
| 作者姓名： | 李关宾 仲红波 刘辉 郑建斌 陈立仁 |
| 作者单位： | 1. 山东轻工业学院化学工程系,济南,250100 2. 山东轻工业学院化学工程系,济南,250100;中国科学院兰州化学物理研究所,兰州,730000 3. 西北大学电分析化学研究所,西安,710069 4. 中国科学院兰州化学物理研究所,兰州,730000 |
| 基金项目： | 国家自然科学基金 (2 97750 18)，国家教育部《高等学校骨干教师资助计划》，山东省自然科学基金，陕西省教育厅专项基金项目 (0 1JK0 76) |
| 摘 要： | 报道了一种基于小波分析的新的滤噪方法小波系数区域相关阈值滤噪法的基本原理 ,并将其用于模拟信号与含噪色谱信号的滤噪研究。系统的描述了该方法的滤噪过程 ,讨论了相关运算区域大小、软硬阈值法、信号的频率、信噪比对滤噪结果的影响。对高效液相色谱信号的滤噪结果表明 ,该方法在保留信号的特征信息的同时能够有效地滤除信号中的噪音 |
| 关 键 词： | 化学计量学 信号处理 小波分析 滤噪 区域相关 |
| 文章编号： | 1000-0720(2004)01-0035-05 |
A threshold filtering method based on the region relativity of the wavelet coefficients |
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| LI Guan-bin,ZHONG Hong-bo.A threshold filtering method based on the region relativity of the wavelet coefficients[J].Chinese Journal of Analysis Laboratory,2004,23(1):35-39. | |
| Authors: | LI Guan-bin ZHONG Hong-bo |
| Abstract: | A novel de-noising method, threshold filtering based on the region relativity of wavelet coefficients, was proposed and used to de-noising of the simulated chro-(ma)tograms. The de-noising process of the method was (described). The effects of the size of correlation region, the hard and soft threshold, the frequency and S/N of original signal, were discussed. The experimental results showed that the noise contained in the original signal could be cleanly eliminated, the characteristics of the signal could be preserved completely, and the smooth baseline could be obtained. |
| Keywords: | Chemometrics Signal processing Wavelet analysis De-noising Region relativity |
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