Plant leaf anthocyanin content estimation method and device based on SOC hyperspectral index

Abstract

The invention relates to a plant leaf anthocyanin content estimation method and device based on an SOC hyperspectral index. Firstly, a hyperspectral remote sensing image and an anthocyanin relative content of a plant leaf in a stressed state are obtained; then, correlation of hyperspectral indexes formed by combining any two wavebands and the anthocyanin content is calculated, the hyperspectral index with the maximum correlation is selected, and an anthocyanin content estimation model is built according to the selected hyperspectral index; the hyperspectral image of the to-be-measured plant leaf is measured, the hyperspectral index is extracted, the obtained hyperspectral index is substituted into the built estimation model for calculation, and the result is the estimation value of the anthocyanin content of the to-be-measured plant leaf. Leaf spectral reflectance data is fused with anthocyanin content data, the hyperspectral index is selected through correlation analysis, the pigment content is extracted on the basis of the hyperspectral index method, operation is easy and quick, precision is high, and errors generated in the extraction process in a laboratory chemical method are effectively avoided.

Description

technical field [0001] The invention relates to a method and device for estimating the anthocyanin content of plant leaves based on SOC hyperspectral index, and belongs to the technical field of non-destructive measurement of crop growth information in precision agriculture. Background technique [0002] Anthocyanins are the third major pigment in plant leaf pigments, which can provide valuable information on plant physiological status and stress response. Generally, anthocyanins are abundant in young and old leaves of plants. Many environmental stresses, including strong light, UVB irradiation, low temperature, drought, injury, bacterial and fungal infection, nitrogen and phosphorus deficiency, certain herbicides and pollutants, etc. will cause the effective accumulation of anthocyanin content, thereby Resist to environmental stress. Anthocyanins have the function of photoprotection, can improve the ability of plants to resist freezing and drought stress, have antioxidant...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for estimating the anthocyanin content of plant leaves based on the SOC hyperspectral index, so as to solve the problem of low accuracy in estimating the anthocyanin content at present

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