Abstract：Based on the wavelet analysis, the noise of the near infrared first derivative spectrum of rapeseed oil is eliminated. Several popular wavelet denoising methods are introduced, including wavelet decomposition and reconstruction method, nonlinear wavelet soft-threshold denoising method, and wavelet transform modulus maxima method，The results show that the wavelet transform modulus maxima method is the best, the nonlinear wavelet soft-threshold method is the second, and other are worse. The wavelet transform modulus maxima method can produce more precise model with little deviation.
郝勇，陈斌*,朱锐. 近红外光谱预处理中几种小波消噪方法的分析[J]. 光谱学与光谱分析, 2006, 26(10): 1838-1841.
HAO Yong，CHEN Bin*,ZHU Rui. Analysis of Several Methods for Wavelet Denoising Used in Near Infrared Spectrum Pretreatment. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(10): 1838-1841.
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