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Rice leaf starch content remote sensing inversion model and method based on XGBoost regression algorithm

A technology of starch content and remote sensing inversion, which is applied in measuring devices, color/spectral characteristic measurement, and material analysis through optical means, etc. Complicated components and other issues

Pending Publication Date: 2021-04-09
HUAIYIN TEACHERS COLLEGE
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Problems solved by technology

In the process of constructing the inversion model of rice leaf starch content, the spectral range measured by the full-band spectrometer covers 350nm to 2500nm, but due to the complexity of rice components, the spectral characteristic bands of the components overlap partially, and the determination of the characteristic spectrum of rice leaf starch content At the same time, the rapid processing of hyperspectral data has become an urgent technical problem to estimate the starch content of rice leaves based on hyperspectral data
[0005] Therefore, it is hoped to provide a remote sensing inversion model of rice leaf starch content, which can quickly and accurately obtain the information of rice leaf starch content, and overcome the difficulty in determining the characteristic bands of rice leaf starch content caused by the spectral superposition effect caused by the complexity of rice components. Difficult to greatly improve the accuracy of the rice leaf starch content inversion model

Method used

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  • Rice leaf starch content remote sensing inversion model and method based on XGBoost regression algorithm
  • Rice leaf starch content remote sensing inversion model and method based on XGBoost regression algorithm
  • Rice leaf starch content remote sensing inversion model and method based on XGBoost regression algorithm

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Embodiment

[0059] The XGBoost regression algorithm-based remote sensing inversion method of rice leaf starch content in this embodiment is based on the measured hyperspectral data, using the rice planting area (the rice and wheat planting base in Huai'an, Huai'an Academy of Agricultural Sciences, Jiangsu Province, and the rice variety is Huai rice 5 No., the sampling period is the rice jointing stage) collected rice canopy reflectance spectral data and rice leaf starch content data, a total of 48 sampling points, these sampling points are evenly distributed and completely cover the entire rice planting area. The data of 48 sampling points are randomly divided into two parts, of which the data of 36 sampling points are used for model building, and the data of 12 sampling points are used for model testing. The process of remote sensing inversion method for rice leaf starch content based on XGBoost regression algorithm is as follows: figure 1 shown, including the following steps:

[0060] ...

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Abstract

The invention provides a rice leaf starch content remote sensing inversion model based on an XGBoost regression algorithm, which is an XGBoost regression model of Python language, and further provides model parameters of the XGBoost regression model. The invention further provides a rice leaf starch content remote sensing inversion method based on the XGBoost regression algorithm. The rice leaf starch content remote sensing inversion model based on the XGBoost regression algorithm can quickly and accurately obtain the rice leaf starch content information, and overcomes the difficulty that the characteristic waveband of the rice leaf starch content is difficult to determine due to the spectral superposition effect caused by complex rice components; The precision of the rice leaf starch content inversion model is greatly improved; the rice leaf starch content inversion model is ingenious in design, simple and convenient to calculate, easy to implement, low in cost and suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of agricultural remote sensing, in particular to the technical field of rice leaf starch content measurement, and specifically refers to a remote sensing inversion model and method for rice leaf starch content based on an XGBoost regression algorithm. Background technique [0002] Starch content in rice leaves refers to the weight percentage of starch in rice leaves. It is an important parameter to quantify the photosynthesis state of rice, carbon dioxide fixation, and carbohydrate synthesis. It reflects rice physiology, growth, and fertilizer and water conditions. The influence of factors such as fertilizer and water. [0003] Monitoring the starch content of rice leaves and mastering the physiological conditions and growth conditions of rice photosynthetic products such as synthesis, transport, storage and accumulation can not only ensure the yield and quality of rice production, but also dynamically manag...

Claims

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Application Information

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IPC IPC(8): G06F30/27G01N21/25G01N21/17
CPCG06F30/27G01N21/25G01N2021/1797
Inventor 汪伟钟平邵文琦朱元励吴莹莹姜晓剑陈青春任海芳李卓
Owner HUAIYIN TEACHERS COLLEGE
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