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Variety identification method of Lycium barbarum based on hyperspectral imaging technology

A technology of hyperspectral imaging and identification method, which is applied in the field of identification of Chinese herbal medicines, can solve the problems of not much involvement in the field of traditional Chinese medicine, and achieve the effect of facilitating market circulation monitoring, improving accuracy and scientificity, and eliminating the effect of scattering

Active Publication Date: 2021-06-18
INST OF CHINESE MATERIA MEDICA CHINA ACAD OF CHINESE MEDICAL SCI
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Problems solved by technology

As a result, hyperspectral imaging technology has penetrated into all aspects of life, except in the field of traditional Chinese medicine.

Method used

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  • Variety identification method of Lycium barbarum based on hyperspectral imaging technology
  • Variety identification method of Lycium barbarum based on hyperspectral imaging technology
  • Variety identification method of Lycium barbarum based on hyperspectral imaging technology

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Embodiment

[0047] according to figure 1 The flow chart shown is based on the hyperspectral imaging spectrometer to identify different varieties of Lycium barbarum from the same place of origin. The specific steps are as follows:

[0048] 1. Use a hyperspectral imager to scan the spectrum of wolfberries of different varieties and the same origin. When scanning, the 1000-2400nm lens works to collect hyperspectral data.

[0049]Take 300 samples of wolfberry from different varieties and the same place of origin, and scan 100 samples for 3 times each time, and try not to exceed the range of the lens during each scan. When placing goji berries, highlight the characteristics of each particle, try not to overlap closely, and place the whiteboard for black and white correction 5cm behind the sample. Wait for the instrument to connect and self-test. Set the scanning parameters of the hyperspectral imager, the lens distance is 30cm, the platform moving speed is 1.5mm / s, the integration time of th...

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Abstract

The invention discloses a method for identifying wolfberry varieties based on hyperspectral imaging technology. It includes the following steps: spectral scanning of different varieties of medlar in the same place of origin, collecting hyperspectral data in the 1000-2400nm band; performing RAD correction; then black and white correction, and processing it into relative reflectance data; performing threshold segmentation and deleting small area calculations ; extract the region of interest from the processed data to obtain the average spectral value of the region of interest; perform multivariate scattering correction on the average spectral value of the region of interest three times to obtain the multivariate scattering correction value; perform data segmentation on the multivariate scattering correction value, It is divided into training set, verification set and test set; the main spectral information and variety information obtained from the spectrum of the training set are modeled by partial least squares regression to obtain a wolfberry variety identification model; the verification set and test set are used to debug the model; The variety identification model finally established was used to identify the varieties of Lycium barbarum. The technical operation process of the invention has the characteristics of scientific and efficient identification.

Description

technical field [0001] The invention relates to a method for identifying varieties of Lycium barbarum based on hyperspectral imaging technology, and belongs to the field of identification of traditional Chinese medicinal materials. Background technique [0002] There are more than 80 kinds of wolfberry resources distributed at home and abroad, and there are 7 kinds and 3 varieties in our country. There are Ningxia wolfberry, yellow fruit wolfberry, black fruit wolfberry, and Chinese wolfberry that can be used medicinally. Among them, Ningxia wolfberry is a medicinal wolfberry variety stipulated in the Chinese Pharmacopoeia. After years of research, Ningxia wolfberry has bred many types of mature tree species, such as cannabis leaf wolfberry, Ningqi No. 1 to Ningqi No. 7, Ningqi No. 9, and Mengqi No. 1. Due to the variety of varieties, the difficulty of quality control, and the inability to ensure the source of commodities in the market, the wolfberry market has become chaot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3563
CPCG01N21/3563
Inventor 黄璐琦郭兰萍张小波李静
Owner INST OF CHINESE MATERIA MEDICA CHINA ACAD OF CHINESE MEDICAL SCI
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