公开(公告)号：US20200267297A1

公开(公告)日：2020-08-20

申请号：US16865786

申请日：2020-05-04

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Qingbo LU ,  Chen LI

IPC: H04N5/232 ,  G06T7/80

Abstract: An image processing method includes obtaining two-dimensional coordinate points of an input image, and according to a camera imaging model or a distortion correction model, performing a two-dimension to three-dimension conversion operation on the two-dimensional coordinate points to obtain a first processing result. The method also includes performing at least one of virtual reality processing or electronic image stabilization on the first processing result to obtain a second processing result, and mapping the second processing result to a two-dimensional image coordinate system to obtain an output image.

公开(公告)号：US20210176395A1

公开(公告)日：2021-06-10

申请号：US17180572

申请日：2021-02-19

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Qingbo LU ,  Zhenguo LU

IPC: H04N5/232 ,  G03B17/56 ,  G06T3/40 ,  B64C39/02

Abstract: An image processing method includes controlling a zoom lens carried by a gimbal to capture a reference image at a first focal range, adjusting the zoom lens to a second focal range, controlling the zoom lens to capture a plurality of far-focus images of different photographing ranges at the second focal range, stitching the plurality of far-focus images to form a stitched image, and processing the reference image and the stitched image to obtain a target reconstructed image. A focal length of the zoom lens corresponding to the second focal range is greater than a focal length of the zoom lens corresponding to the first focal range.

公开(公告)号：US20200264011A1

公开(公告)日：2020-08-20

申请号：US16854559

申请日：2020-04-21

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Qingbo LU ,  Chen LI ,  Lei ZHU ,  Xiaodong WANG

IPC: G01C25/00 ,  G06T7/246 ,  G06K9/46 ,  B64C39/02 ,  B64D47/08 ,  G01C21/16

Abstract: Method and device for drift calibration of an inertial measurement unit, and an unmanned aerial vehicle are provided. The drift calibration method includes obtaining video data captured by a photographing device; and determining a measurement error of the inertial measurement unit according to the video data and rotation information of the inertial measurement unit when the photographing device capturing the video data. The rotation information of the inertial measurement unit includes the measurement error of the inertial measurement unit.

公开(公告)号：US20200250429A1

公开(公告)日：2020-08-06

申请号：US16855826

申请日：2020-04-22

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Qingbo LU ,  Chen LI ,  Lei ZHU ,  Xiaodong WANG

IPC: G06K9/00 ,  B64C39/02 ,  B64D47/08 ,  G06K9/46 ,  G06K9/62 ,  H04N5/225 ,  G01P3/44 ,  G01C9/02 ,  G01C25/00

Abstract: A method of attitude calibration includes acquiring video data by a photographing device, obtaining rotation information of an initial measurement unit (IMU) in a time interval during which the video data is acquired, and determining a relative attitude between the photographing device and the IMU based the video data and the rotation information.