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Infrared spectrum characteristic extraction method for high-precision discriminating variety, producing area and growth mode of traditional Chinese medicinal materials

A technology of infrared spectroscopy and varieties, applied in the measurement of color/spectral characteristics, special data processing applications, instruments, etc., can solve the problems of lack of general applicability, inconvenient identification, and low efficiency.

Active Publication Date: 2009-08-05
HONG KONG BAPTIST UNIV
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Problems solved by technology

These methods have the following limitations: relevant personnel are required to have a high level of drug knowledge and rich experience accumulation, the efficiency is not high and lack of universal applicability, and it is not easy to be extended to the identification of Chinese medicinal materials in the case of many varieties, places of origin and growth methods

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  • Infrared spectrum characteristic extraction method for high-precision discriminating variety, producing area and growth mode of traditional Chinese medicinal materials
  • Infrared spectrum characteristic extraction method for high-precision discriminating variety, producing area and growth mode of traditional Chinese medicinal materials
  • Infrared spectrum characteristic extraction method for high-precision discriminating variety, producing area and growth mode of traditional Chinese medicinal materials

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Embodiment Construction

[0026] Since the acquired infrared spectrum raw data files may be stored in different formats (for example: *.asc or *.sp), and the stored spectral amplitude value may be "percent transmission", It may also be "absorbance". In order to facilitate subsequent processing, the first step of this program is to read out the spectral amplitude value in each data file used for training and save it in a separate file directory in a unified format (before saving, if a certain amplitude value is absorbance, is converted to a percent transmittance), and the information on the species, place of origin and growth mode of Chinese herbal medicines is added to the file name with a uniformly specified code.

[0027] In order to highlight the changing part of the spectral line and eliminate the influence of the different baselines of each spectral line, we have learned from other people's experience to obtain the first derivative of all infrared spectra, and then extract features from the first ...

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Abstract

The invention discloses a method for extracting the characteristics of infrared spectrums for highly precisely distinguishing the varieties, the producing areas and the growth patterns of Chinese herbal medicine, which comprises the steps of obtaining the infrared spectrums of the Chinese herbal medicine samples of different varieties, preprocessing the infrared spectrums, classifying the Chinese herbal medicine samples according to the producing areas and the growth patterns thereof, calculating the spectral functions on differences of the Chinese herbal medicine samples of same and different varieties, obtaining the characteristic vectors of multiple Chinese herbal medicine samples, reducing the dimensionalities of the characteristic vectors and optimizing the distribution of the characteristic vectors so as to extract the characteristics of the infrared spectrums.

Description

technical field [0001] The invention belongs to the technical field of an automatic identification method for the variety, origin and growth mode of Chinese medicinal materials. Background technique [0002] Traditional Chinese medicine is the scientific crystallization of the Chinese nation's struggle against diseases in the long history and a bright treasure that contributes to mankind, with outstanding curative effects. However, due to the rapid development of contemporary global medical technology, the traditional dominant position of traditional Chinese medicine is being impacted. At present, some quality problems exist in the Chinese medicine market in our country, which have brought adverse consequences to the reputation, curative effect and people's life and health of Chinese medicine. [0003] The quality of Chinese herbal medicines is the foundation of the quality of Chinese herbal medicines, and the quality identification of Chinese herbal medicines plays an extr...

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Application Information

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IPC IPC(8): G01N21/25G06F19/00
Inventor 张晓明王太君
Owner HONG KONG BAPTIST UNIV
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