公开(公告)号：US20200255143A1

公开(公告)日：2020-08-13

申请号：US16863158

申请日：2020-04-30

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Jiabin LIANG ,  Kaiyong ZHAO ,  Yuewen MA ,  Dongdong MA

IPC: B64C39/02 ,  G06T17/05 ,  H04N5/232 ,  H04N7/18 ,  H04N5/76

Abstract: A three-dimensional (3D) reconstruction system based on aerial photography includes an unmanned aerial vehicle (UAV), a ground station, and a cloud server. The ground station is configured to determine an aerial photography parameter for indicating an aerial photography state of the UAV based on a user operation and transmit the aerial photography parameter to the UAV. The UAV is configured to receive the aerial photography parameter transmitted by the ground station; fly based on the aerial photography parameter and control an imaging device carried by the UAV to acquire aerial images during a flight; and transmit the aerial images to the cloud server. The cloud server is configured to receive the aerial images and generate a 3D model of a target area based on the aerial images.

公开(公告)号：US20210245880A1

公开(公告)日：2021-08-12

申请号：US17244448

申请日：2021-04-29

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Guang YAN ,  Xianghua JIA ,  Dongdong MA ,  Xinchao LI ,  Jinsong LI

IPC: B64D1/18 ,  B64C39/02 ,  G06K9/00 ,  G06N3/08 ,  G05D1/00

Abstract: A control method includes obtaining three-dimensional (3D) spatial information of a target crop area planted with a plurality of target crops; determining spraying control information based on the 3D spatial information; and controlling a spraying unmanned aerial vehicle (UAV) to perform spraying on the plurality of target crops based on the spraying control information. The spraying control information includes a spraying mode for controlling the spraying UAV to perform spraying on one target crop of the plurality of target crops, and the spraying mode includes a flight mode.

公开(公告)号：US20200334499A1

公开(公告)日：2020-10-22

申请号：US16906604

申请日：2020-06-19

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Dongdong MA ,  Yuewen MA ,  Kaiyong ZHAO

IPC: G06K9/62 ,  G06K9/00 ,  G06T7/00 ,  G06T7/60

Abstract: A vision-based positioning method includes extracting first features from a first image and second features from a second image, determining initial matching pairs according to the first features and the second features, extracting satisfying matching pairs that meet a requirement from the initial matching pairs according to an affine transformation model, and determining a position-attitude change according to the satisfying matching pairs. The first image and the second image are obtained by a vision sensor carried by an aerial vehicle. The position-attitude change indicates a change from a position-attitude of the vehicle when the vision sensor captures the first image to a position-attitude of the vehicle when the vision sensor captures the second image.