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    • 1. 发明申请
    • APPARATUS FOR DETERMINING WATER CONTENT IN PLANTS
    • WO2021048017A1
    • 2021-03-18
    • PCT/EP2020/074770
    • 2020-09-04
    • BAYER AKTIENGESELLSCHAFT
    • NICOL, Andreas
    • G01N21/3554G01N21/84
    • The present invention relates to an apparatus (10) for determining water content in plants. The apparatus comprises at least one camera detector (20), at least two wavelength filters (30), and a processing unit (40). The at least one camera detector is configured to acquire at least two images of a scene within which at least part of a plant is located. The at least one camera detector is configured to acquire a first infrared image of the at least two images over a first infrared wavelength range associated with a first passband wavelength range of a first wavelength filter (32) of the at least two wavelength filters. The at least one camera detector is configured to acquire a second infrared image of the at least two images over a second infrared wavelength range associated with a second passband wavelength range of a second wavelength filter (34) of the at least two wavelength filters, and wherein the first wavelength range is different to the second wavelength range. The processing unit is configured to determine a measure of water content in the plant comprising utilization of a ratio of pixel values in the first infrared image with pixel values in the second infrared image. The processing unit is configured to utilize the determined measure of water content in the plant and a calibration for the plant to determine at least one quantitative value of water content for the plant.