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Automatic crop health change detection and alerting system

專利號(hào)
US11176372B2
公開日期
2021-11-16
申請(qǐng)人
Farmers Edge Inc.（CA Winnipeg）
發(fā)明人
Gordon Stuart James Logie; Guy Dion Duke
IPC分類
G06K9/00; G06T7/11; G06T7/174
技術(shù)領(lǐng)域
image,change,crop,in,vegetation,or,alert,companion,pixels,images
地域： Winnipeg

摘要

A method and system for crop health change monitoring is provided. The method includes acquiring a companion image of a crop growing within a field at a first point in time, acquiring a master image of the crop growing within the field at a second point in time, and computing, using a processor, vegetation indices using the master image and the companion image, determining, using the processor, regions of change within the master image using the vegetation indices and generating an alert indicative of a change in crop condition of the crop growing within the field, and communicating the alert indicative of the change in crop condition over a network to a computing device configured to receive the alert.

說(shuō)明書

- ChangeThreshold ChangeThreshold * 100 ( 9 )
where ClassAreaChange is the change in area for a particular class or combination of classes as computed from any of Equations 3-8, and ChangeThreshold is the minimum area threshold for that class or combination of classes. To select a single image from multiple candidates, the ThresholdExcess percentages are compared, and the image with the highest ThresholdExcess value is selected as the alert comparison image.

Once a single companion image is selected, direct change detection between master and companion normalized VI images occurs in step 340. FIG. 4 illustrates the process for direct change detection between two images. Process 400 in FIG. 4 is similar to the process in step 340 in FIG. 3. First, the companion image normalized VI image is subtracted pixel-wise from the master image normalized VI image (step 410). This creates a new image, hereafter called the “change image”, where each pixel value represents the change in normalized VI value between the companion and master image.

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