Facility horticultural crop growth condition detection method and device
A technology of crop growth and detection methods, applied in the direction of measuring devices, measurement of scattering characteristics, instruments, etc.
Active Publication Date: 2021-05-18
SOUTH CHINA AGRI UNIV
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the above existing problems and provide a method for detecting the growth status of facility horticultural crops. In the process of high light general image acquisition, the method uses the differential optical path to obtain a dynamic standard whiteboard synchronously, which solves the problem that the change of natural light affects the characteristic wave band. Selected questions to achieve accurate real-time tracking of crop growth
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[0041] In order for those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with the examples and accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0042] see figure 1 , the present embodiment discloses a method for detecting the growth status of protected horticultural crops, and the protected horticultural crops are taken as an example of dendrobium, and the method includes the following steps:
[0043] (1) Under natural light conditions, the horticultural greenhouse crops adopt the differential optical path formed by the hyperspectral camera 14 and the fiber optic spectrometer 9 to collect the reflective hyperspectral image of Dendrobium dendrobii, and simultaneously obtain a dynamic standard whiteboard to calculate the reflectance;
[0044] (2) Carry out target segmentation on the Dendrobium reflectance hyperspectral image...
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The invention discloses a facility horticultural crop growth condition detection method and device, and the method comprises the following steps: (1) collecting a crop reflection hyperspectral image of a horticultural greenhouse crop under a natural illumination condition through employing a differential light path composed of a hyperspectral camera and a fiber optic spectrometer, and synchronously obtaining a dynamic standard white board; (2) carrying out target segmentation on the crop reflection hyperspectral image to obtain an ROI of the crop, obtaining appearance parameters of a plant from the ROI, extracting an average reflectivity spectrum in the ROI, correcting the reflectivity by using a dynamic standard white board to obtain a plant reflectivity spectrum, and carrying out nutrition detection on the plant; and (3) in combination with the appearance parameters and the nutrition detection result, tracking the crop growth condition in real time. According to the method, in a hyperspectral image acquisition process, a dynamic standard white board is synchronously obtained by using a differential light path, so that the problem that the change of natural light affects the selection of a characteristic wave band is solved, and the crop growth condition is accurately tracked in real time.
Description
technical field [0001] The invention relates to the fields of visual technology and plant growth status monitoring, in particular to a method and device for detecting the growth status of facility gardening crops. Background technique [0002] At present, the area of protected gardening in my country has exceeded 3.3 million hectares, ranking first in the world. The imbalance of the main nutrient elements such as nitrogen, phosphorus, and potassium and the symptoms of stress often occur, directly affecting the yield and quality. However, due to the lack of advanced and applicable facility crop fertilizer and water demand information and growth information detection system, it is impossible to conduct comprehensive and accurate detection and analysis of crop nutrition, water content and growth information, and it is impossible to perceive and reflect the real control requirements of crop growth, resulting in Crop yield potential is not fully exploited. Therefore, there is...
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IPC IPC(8): G01N21/55G01N21/01
CPCG01N21/55G01N21/01G01N2021/0112Y02A40/25
Inventor 赵静龙腾刘禹龙拥兵刘厚诚
Owner SOUTH CHINA AGRI UNIV