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    SYSTEM AND METHOD FOR CONTROLLING VIDEO CODING WITHIN IMAGE FRAME
    11.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING VIDEO CODING WITHIN IMAGE FRAME 有权

    公开(公告)号：US20220014758A1

    公开(公告)日：2022-01-13

    申请号：US17486557

    申请日：2021-09-27

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Liang ZHAO ,  Wenyi SU ,  Lei ZHU

    IPC: H04N19/149 ,  H04N19/115 ,  H04N19/172 ,  H04N19/196

    Abstract: A method for controlling video coding includes: obtaining an image frame from a video stream, wherein the image frame is associated with a coding control model; encoding the image frame using a quantization parameter (QP) calculated based on the coding control mode; determining whether a scene has changed significantly based on an analysis of the encoded image frame; in response to the scene having changed significantly, initializing parameters for the coding control model; and in response to no significant scene change, updating the parameters for the coding control model.

    SYSTEM AND METHOD FOR CONTROLLING VIDEO CODING AT FRAME LEVEL
    12.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING VIDEO CODING AT FRAME LEVEL 审中-公开

    公开(公告)号：US20200275104A1

    公开(公告)日：2020-08-27

    申请号：US15931155

    申请日：2020-05-13

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Liang ZHAO ,  Wenyi SU ,  Lei ZHU

    IPC: H04N19/149 ,  H04N19/142

    Abstract: A method for controlling video coding includes obtaining a target rate for an image data unit to be encoded using one or more coding parameters. The one or more coding parameters are determined based on the target rate and a rate control model associated with one or more model parameters. The method further includes determining the one or more model parameters associated with the rate control model based on an encoding of one or more reference image data units using one or more reference coding parameters, determining the one or more coding parameters for encoding the image data unit based on the target rate and the rate control model associated with the one or more determined model parameters, and using the one or more determined coding parameters to encode the image data unit.

    DATA TRANSMISSION
    13.
    发明申请
    DATA TRANSMISSION 审中-公开

    公开(公告)号：US20190342771A1

    公开(公告)日：2019-11-07

    申请号：US16514559

    申请日：2019-07-17

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Lei ZHU ,  Hao CUI ,  Ying CHEN ,  Ming GONG

    IPC: H04W24/02 ,  H04L12/26 ,  H04N19/146

    Abstract: A data transmitting method includes generating multiple channels of encoded data by encoding same data to be encoded according to a plurality of bit rates and selecting encoded data to be transmitted from the multiple channels of encoded data according to a channel bandwidth of a transmission channel. The encoded data to be transmitted is one of the multiple channels of encoded data that matches the channel bandwidth.

    METHOD FOR IMAGE PROCESSING, DEVICE, UNMANNED AERIAL VEHICLE, AND RECEIVER
    14.
    发明申请
    METHOD FOR IMAGE PROCESSING, DEVICE, UNMANNED AERIAL VEHICLE, AND RECEIVER 审中-公开

    公开(公告)号：US20190313027A1

    公开(公告)日：2019-10-10

    申请号：US16446929

    申请日：2019-06-20

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Lei ZHU ,  Ning MA ,  Ming GONG

    IPC: H04N5/232 ,  B64C39/02

    Abstract: An image processing method includes obtaining a current image frame. The image processing method also includes in response to feedback information, determining a reference image frame for coding the current image frame based on the feedback information. The feedback information is transmitted by a receiver based on a variable feedback time interval, and is configured to indicate a transmission status of an image frame transmitted by a transmitter to the receiver prior to the feedback information. The image processing method also includes coding the current image frame based on an inter-frame coding and the reference image frame to generate coded data. The image processing method further includes transmitting the coded data to the receiver.

    METHOD, DEVICE, AND STORAGE MEDIUM FOR ENCODING VIDEO DATA BASE ON REGIONS OF INTERESTS
    16.
    发明申请
    METHOD, DEVICE, AND STORAGE MEDIUM FOR ENCODING VIDEO DATA BASE ON REGIONS OF INTERESTS 有权

    公开(公告)号：US20210168376A1

    公开(公告)日：2021-06-03

    申请号：US17171274

    申请日：2021-02-09

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Lei ZHU ,  Wenjun Zhao ,  Wenyi Su ,  Liang Zhao

    IPC: H04N19/167 ,  H04N19/176 ,  H04N19/124 ,  B64C39/02

    Abstract: An unmanned aerial vehicle comprises a body coupled with a plurality of propulsion systems and an imaging device; an encoder that encodes video data generated by the imaging device, and a wireless communication system for transmitting the encoded video data. The encoder includes a region of interest (ROI) control module that determines, within an image frame of the video data, a first region and a second region, the ROI control module further setting a first limit indicating a maximum value of quantization parameters for encoding each macroblock within the first region, a second limit indicating a maximum size of the first region, and a third limit indicating a minimum size of the second region. The encoder further includes a ROI monitoring module coupled to the ROI control module that estimates a first image quality of the first region and a second image quality of a second region, and the ROI control module adjusts a size of the first region and the second region according to the first image quality and the second image quality. The present application also relates to an encoding method as embodied in the encoder.

    IMAGE PROCESSING METHOD AND DEVICE
    17.
    发明申请
    IMAGE PROCESSING METHOD AND DEVICE 有权

    公开(公告)号：US20210136388A1

    公开(公告)日：2021-05-06

    申请号：US17121289

    申请日：2020-12-14

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Lei ZHU ,  Ming GONG ,  Ning MA ,  Wei FAN ,  Hao CUI

    IPC: H04N19/166 ,  H04N19/17 ,  H04N19/159

    Abstract: An image processing method includes sending, by a receiving terminal to a transmitting terminal according to a feedback time interval, a feedback message indicating a reception state of a received image frame sent by the transmitting terminal and received by the receiving terminal before the feedback message is sent; upon detecting a reception error of a target image frame before a first time point, sending a first feedback message indicating the reception error to the transmitting terminal at the first time point; and upon receiving, after the first time point and before a second time point, encoded data of the target image frame obtained according to an error correction mechanism from the transmitting terminal, sending a second feedback message indicating a correct reception to the transmitting terminal at the second time point. A time period between the first and second time points equals the feedback time interval.

    IMAGE ENCODING CONTROL METHOD AND APPARATUS, STORAGE MEDIUM, AND UNMANNED AERIAL VEHICLE
    18.
    发明申请
    IMAGE ENCODING CONTROL METHOD AND APPARATUS, STORAGE MEDIUM, AND UNMANNED AERIAL VEHICLE 有权

    公开(公告)号：US20210120230A1

    公开(公告)日：2021-04-22

    申请号：US17133399

    申请日：2020-12-23

    Applicant: SZ DJI TECHNOLOGY CO., LTD.

    Inventor： Lei ZHU ,  Xiufeng GAO ,  Maojiang LIN

    IPC: H04N19/103 ,  H04N19/124 ,  H04N19/172 ,  H04N19/136 ,  H04N19/146

    Abstract: An image encoding control method and device, a storage medium, and an unmanned aerial vehicle (UAV) are disclosed. The method includes: obtaining a frame of image data from an image sequence; encoding the image data for a first time, and obtaining first encoding quality of the image data after the first time encoding; and iteratively encoding the image data based on the first encoding quality and preset target encoding quality. Thus, a frame of image data in an image sequence is obtained and then encoded for the first time, first encoding quality is obtained, and encoding the image data is further controlled based on the first encoding quality and target encoding quality. This effectively solving the problem of a waste of bit rate resources or a shortage of bit rate resources, ensuring encoding quality of images, and meeting requirements of users. Further, the practicability of the method is improved.

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