Systems and methods for auto-return

    公开(公告)号:US11300413B2

    公开(公告)日:2022-04-12

    申请号:US16885841

    申请日:2020-05-28

    Inventor: Honghui Zhang

    Abstract: A method of controlling flight of an unmanned aerial vehicle (UAV) includes collecting, while the UAV traverses a flight path, a set of images corresponding to different fields of view of an environment around the UAV using multiple image capture devices. Each of the multiple image capture devices includes one of the different fields of view. The method further includes extracting a set of feature points from the set of images and selecting a subset of feature points from the set of feature points to be stored based on a number of image capture devices that collect images including the subset of feature points to aid navigation of the UAV.

    Imaging system and method
    5.
    发明授权

    公开(公告)号:US11044452B2

    公开(公告)日:2021-06-22

    申请号:US16109211

    申请日:2018-08-22

    Abstract: A method of distance measuring includes obtaining a depth map and a stereo pair of images of a scene of interest, and enhancing a precision of the depth map based on disparity values of corresponding points between the images. The images have a higher resolution than the depth map. Enhancing the precision of the depth map includes determining the disparity values by optimizing an energy function of the images and replacing low precision values of the depth map with corresponding high precision values based on the disparity values.

    Systems and methods for auto-return
    8.
    发明授权

    公开(公告)号:US10670407B2

    公开(公告)日:2020-06-02

    申请号:US16001926

    申请日:2018-06-06

    Inventor: Honghui Zhang

    Abstract: A method of controlling flight of an unmanned aerial vehicle (UAV) includes collecting, while the UAV traverses a flight path, a first set of images corresponding to different fields of view of an environment around the UAV using multiple image capture devices. Each of the multiple image capture devices has one of the different fields of view. The method further includes extracting a first set of feature points from the first set of images, controlling the UAV to traverse a return path, and while the UAV traverses the return path, collecting a second set of images corresponding to the different fields of view using the multiple image capture devices and comparing the first set of feature points with a second set of feature points extracted from the second set of images.

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