Detecting infection of plant diseases with improved machine learning

    公开(公告)号:US10956780B2

    公开(公告)日:2021-03-23

    申请号:US16662023

    申请日:2019-10-24

    Inventor: Ying She Wei Guan

    Abstract: A system and processing methods for refining a convolutional neural network (CNN) to capture characterizing features of different classes are disclosed. In some embodiments, the system is programmed to start with the filters in one of the last few convolutional layers of the initial CNN, which often correspond to more class-specific features, rank them to hone in on more relevant filters, and update the initial CNN by turning off the less relevant filters in that one convolutional layer. The result is often a more generalized CNN that is rid of certain filters that do not help characterize the classes.

    Machine learning techniques for identifying clouds and cloud shadows in satellite imagery

    公开(公告)号:US11256916B2

    公开(公告)日:2022-02-22

    申请号:US16657957

    申请日:2019-10-18

    Abstract: Systems and methods for identifying clouds and cloud shadows in satellite imagery are described herein. In an embodiment, a system receives a plurality of images of agronomic fields produced using one or more frequency bands. The system also receives corresponding data identifying cloud and cloud shadow locations in the images. The system trains a machine learning system to identify at least cloud locations using the images as inputs and at least data identifying pixels as cloud pixels or non-cloud pixels as outputs. When the system receives one or more particular images of a particular agronomic field produced using the one or more frequency bands, the system uses the one or more particular images as inputs into the machine learning system to identify a plurality of pixels in the one or more particular images as particular cloud locations.

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