公开(公告)号：US06683970B1

公开(公告)日：2004-01-27

申请号：US09635271

申请日：2000-08-09

申请人： Satoru Satake ,  Yukio Hosaka ,  Hideharu Maruyama ,  Nobuhiko Nakamura

发明人： Satoru Satake ,  Yukio Hosaka ,  Hideharu Maruyama ,  Nobuhiko Nakamura

IPC分类号： G06U900

CPC分类号： G01N21/31 ,  A01G7/00 ,  G01N2021/8466

摘要： A method of diagnosing nutritious condition of crop in a plant field is disclosed. The method comprises the steps of: locating a camera equipped with a plurality of image elements in a predetermined central depression angle with respect to the plant field; obtaining an amount of reflection light of a crop leaf for each image element by image-taking the field; obtaining an image-taken area for each unit image element by an area function constituted by a conversion variable including a ground clearance, an image element depression angle, the number of image elements and a field angle of the camera; making an area compensation of the amount of reflection light for each image element by the image-taken area; making a depression angle compensation of the amount of reflection light by a depression angle coefficient predetermined for compensating differences of amounts of reflection light correspondingly with image element depression angles; measuring an amount of light incident on the crop leaf; obtaining reflectance from the amount of the reflection light compensated and the measured amount of incident light; obtaining first crop information in a predetermined area based on the reflectance and a first crop related formula predetermined for obtaining crop information from reflectance, and storing the first crop information; and determining a nutritious condition of the crop in the plant field based on the first crop information. Instead of the grand clearance of the camera, a distance of field of view of the camera may well be used.

摘要翻译： 公开了一种诊断植物营养状况的方法。 该方法包括以下步骤：将装备有相对于植物场的预定中心凹陷角的多个图像元素的相机定位; 通过图像拍摄获得每个图像元素的作物叶的反射光量; 通过由包括离地间隙，图像元素俯仰角，图像元素的数量和相机的视场角的转换变量构成的区域函数来获得每个单位图像元素的图像拍摄区域; 通过图像拍摄区域对每个图像元素的反射光量进行面积补偿; 通过预定的用于补偿反射光量的差异的按压角系数对应于图像元素下压角来对反射光的倾斜角补偿; 测量入射在作物叶上的光量; 从补偿的反射光的量和入射光的测量量获得反射率; 基于所述反射率和预定的用于从反射率获得作物信息的第一作物相关公式获得预定区域中的第一作物信息，以及存储所述第一作物信息; 以及基于所述第一作物信息确定所述作物在所述植物区域中的营养状况。 而不是相机的大清除，可以使用相机的视野的距离。