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    SYSTEM AND METHODS FOR BIT RATE CONTROL
    2.
    发明申请
    SYSTEM AND METHODS FOR BIT RATE CONTROL 审中-公开

    公开(公告)号：US20190166180A1

    公开(公告)日：2019-05-30

    申请号：US16262048

    申请日：2019-01-30

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Wenjun ZHAO ,  Yannan WU

    IPC: H04L29/06

    Abstract: A computer-implemented method for controlling bit rate includes determining a difference between a cumulative number of bits used to encode one or more slices of a frame up to and including a first slice encoded using a first coding parameter and a maximum number of bits allowed to encode the one or more slices of the frame, updating a coding parameter threshold based at least in part on a counter that indicates a number of times when one or more coding parameters used to encode the one or more slices reach or exceed the coding parameter threshold, and determining a second coding parameter used to encode a second slice of the frame based at least in part on the difference and the updated coding parameter threshold.

    SYSTEM AND METHODS FOR BIT RATE CONTROL
    3.
    发明申请
    SYSTEM AND METHODS FOR BIT RATE CONTROL 有权

    公开(公告)号：US20210152621A1

    公开(公告)日：2021-05-20

    申请号：US17140436

    申请日：2021-01-04

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Wenjun ZHAO ,  Yannan WU

    IPC: H04L29/06 ,  H04N19/15 ,  H04N19/174 ,  H04N19/126

    Abstract: A computer-implemented method for controlling bit rate includes determining an expected adjustment for a first coding parameter that encodes a first slice based on a difference between a cumulative number of bits used to encode one or more slices of a frame up to and including the first slice and a maximum number of bits allowed to encode the one or more slices, updating a coding parameter threshold based on an indicator that indicates a relationship between the coding parameter threshold and one or more coding parameters used to encode the one or more slices, and determining an actual adjustment for the first coding parameter based on the expected adjustment and the updated coding parameter threshold.

    SYSTEM AND METHOD FOR CONSTRUCTING OPTICAL FLOW FIELDS
    6.
    发明申请
    SYSTEM AND METHOD FOR CONSTRUCTING OPTICAL FLOW FIELDS 审中-公开

    公开(公告)号：US20170188046A1

    公开(公告)日：2017-06-29

    申请号：US15458522

    申请日：2017-03-14

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Yannan WU

    IPC: H04N19/527

    CPC classification number: H04N19/527 ,  H04N19/172 ,  H04N19/182 ,  H04N19/521

    Abstract: A system constructs an optical flow field that corresponds with a selected video frame. The optical flow field is constructed based on a first motion of a mobile platform having an imaging device and a status of the imaging device. The first motion and the status are determined with measurements of sensors installed on the mobile platform and/or the imaging device installed on the mobile platform. The first motion includes at least one of a first rotation, a horizontal movement, or a vertical movement of the mobile platform. The status includes a rotation of the imaging device and/or an orientation of the imaging device relative to the mobile platform.

    SYSTEMS AND METHODS FOR VIDEO PROCESSING AND DISPLAY
    8.
    发明申请
    SYSTEMS AND METHODS FOR VIDEO PROCESSING AND DISPLAY 审中-公开

    公开(公告)号：US20190075252A1

    公开(公告)日：2019-03-07

    申请号：US16180571

    申请日：2018-11-05

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Cong ZHAO ,  Yannan WU ,  Kang YANG ,  Guyue ZHOU

    IPC: H04N5/262 ,  H04N13/161 ,  H04N7/18 ,  G01C21/00 ,  G01P13/00

    Abstract: A method for processing video data of an environment includes, with aid of one or more processors individually or collectively, obtaining in or near real-time a reference position of an imaging device located on a movable object based on one or more previously traversed positions of the imaging device, and modifying an image frame in the video data to obtain a modified image frame based on the reference position of the imaging device and an actual position of the imaging device at which the image frame is taken. The one or more previously traversed positions are obtained using at least one sensor on the movable object. The video data is acquired by the imaging device

    SYSTEM AND METHOD FOR CONSTRUCTING OPTICAL FLOW FIELDS
    10.
    发明申请
    SYSTEM AND METHOD FOR CONSTRUCTING OPTICAL FLOW FIELDS 审中-公开

    公开(公告)号：US20190273945A1

    公开(公告)日：2019-09-05

    申请号：US16415891

    申请日：2019-05-17

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Yannan WU

    IPC: H04N19/527 ,  H04N19/513

    Abstract: A method for constructing an optical flow field includes classifying a plurality of scenarios according to motions of a mobile platform carrying an imaging device and statuses of the imaging device. The plurality of scenarios include at least one of elementary scenarios or combined scenarios. The method further includes constructing a plurality of optical flow fields each corresponding to one of the plurality of scenarios, acquiring a motion of the mobile platform and a status of the imaging device relative to the mobile platform, and selecting a corresponding optical flow field from the constructed optical flow fields corresponding to the plurality of scenarios based upon the motion of the mobile platform and the status of the imaging device for the imaging device to capture a frame at a shooting direction.

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