Identification method of wolfberry origin based on hyperspectral imaging technology

Abstract

The invention discloses a method for identifying the origin of wolfberry fruit based on hyperspectral imaging technology. It includes the following steps: Spectral scanning is performed on samples of the same variety of Lycium barbarum from different origins to collect hyperspectral data from 1000 to 2400 nm; RAD correction and black and white correction are performed to process relative reflectance data, and then threshold segmentation is performed to delete small Area calculation; extract the region of interest from the data to obtain the average spectral value of the region of interest; divide it into three parts, and record it as the training set, verification set and test set spectral data; use ZCA whitening to process the three parts of data; will be processed by The main spectral information and origin information obtained from the spectrum of the training set were modeled using partial least squares regression to obtain a prediction model for the origin of wolfberry fruit; the model was debugged using the spectral data of the validation set and the test set spectral data; Sub-origin identification. The invention can identify the origin, reduce the cost of manual identification, and improve the efficiency, accuracy and scientificity of identification.

Description

technical field [0001] The invention relates to a method for identifying the origin of wolfberry fruit based on hyperspectral imaging technology, and belongs to the field of identification of traditional Chinese medicinal materials. Background technique [0002] Lycium barbarum resources are widely distributed in my country. According to the description of "Flora of China", it is native to northern my country, such as northern Hebei, Inner Mongolia, northern Shanxi, northern Shaanxi, Gansu, Ningxia, Qinghai, and Xinjiang. It is cultivated because the fruit is used as medicine. In addition to the cultivation in provinces and regions, many provinces and regions in central and southern my country have also introduced and cultivated, especially in Ningxia and Tianjin, where there are many cultivations and high yields. After many researches, Ningxia has been positioned as the authentic production area of ​​medicinal wolfberry. However, due to the large number of production areas,...

AI Technical Summary

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.

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