Wavelet-Transform Based Identification of Ginseng of Different Ages Using Two-Dimensional Infrared Correlation Spectroscopy
ZHAN Da-qi1,CHEUNG Yiu-ming2,SUN Su-qin1*
1. Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education),Department of Chemistry,Tsinghua University,Beijing 100084,China 2. Department of Computer Science,Hong Kong Baptist University,Hong Kong,China
Abstract：Wavelet transform was applied to the pretreatment of dynamic spectra data of two-dimensional infrared correlation spectroscopy. The results showed that with the pretreatment,the resolution of synchronous spectrum was noticeably improved. The peaks in the spectrum were toned up,and were separated from each other much more clearly than before. All these enhanced the performances of two-dimensional infrared correlation spectroscopy in analyzing and identifying complicated system. With this approach,ginseng of different ages can be identified.
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