公开(公告)号：US11019356B2

公开(公告)日：2021-05-25

申请号：US16738253

申请日：2020-01-09

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Wenyi Su ,  Liang Zhao ,  Lei Zhu

IPC: H04N19/513 ,  H04N19/172 ,  H04N19/423 ,  H04N19/527 ,  H04N19/53

Abstract: Motion estimation method and motion estimation device are provided. The method includes: determining a global motion vector of a current frame relative to a current reference frame according to the current frame and the current reference frame; and performing motion estimation on a target frame according to the global motion vector.

公开(公告)号：US10911750B2

公开(公告)日：2021-02-02

申请号：US16457809

申请日：2019-06-28

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Liang Zhao ,  Wenyi Su ,  Qingdong Yu ,  Wei Xiao ,  Lei Zhu ,  Ming Gong ,  Ning Ma ,  Wei Fan ,  Hao Cui

IPC: H04N19/164 ,  H04N19/172 ,  H04N19/103

Abstract: A computer-implemented method includes receiving a feedback message including feedback information from a receiver of image data, obtaining a current frame to be encoded, encoding the current frame based at least in part on the feedback information, and transmitting the encoded current frame to the receiver.

公开(公告)号：US20200228846A1

公开(公告)日：2020-07-16

申请号：US16832148

申请日：2020-03-27

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Lei Zhu

IPC: H04N19/86

Abstract: Methods and systems are provided for preprocessing content, controlling one or more state parameters associated with a moveable object, and controlling the preprocessing operations. For example, to an image processing method includes receiving, by a processor, one or more images from an imaging device carried on a movable object and adjusting one or more imaging parameters of at least one of the one or more images to obtain an adjusted image. The method further includes encoding the adjusted image to generate encoded image data transmitting the encoded image data from the movable object to a remote terminal.

公开(公告)号：US11159796B2

公开(公告)日：2021-10-26

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: H04N19/124 ,  H04N19/146 ,  H04L12/26 ,  H04W24/02 ,  H04N19/149 ,  H04L1/00 ,  H04N19/196 ,  H04N19/19 ,  H04N19/172

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.

公开(公告)号：US10893300B2

公开(公告)日：2021-01-12

申请号：US15824581

申请日：2017-11-28

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Xing Chen ,  Zisheng Cao ,  Lei Zhu

IPC: H04N19/91 ,  H04N19/503 ,  H04N19/105 ,  H04N19/13

Abstract: A system for processing a video obtains a prediction table for a reference frame of the video and codes one or more target frames of the video based on the prediction table. The prediction table is a Huffman table of difference values for reference pixels of the reference frame. The difference value for a reference pixel is determined based on an actual value of the reference pixel and a prediction value determined based on respective pixel values of one or more pixels adjacent to the reference pixel. The one or more target frames are coded based on the Huffman table of the reference frame and prediction values of the one or more target frames.

公开(公告)号：US10855917B2

公开(公告)日：2020-12-01

申请号：US16383043

申请日：2019-04-12

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Mingli Cui ,  Lei Zhu ,  Hao Cui ,  Wei Chen ,  Dong Qin ,  Chunlei Sun

IPC: H04N5/232 ,  H04N19/48 ,  H04N19/93

Abstract: A data processing method includes obtaining merged attribute information of an image sensor, obtaining pixel data of the image sensor, and processing the pixel data according to the merged attribute information. The merged attribute information includes elements each corresponding to at least one pixel of the image sensor and containing N types of attribute information of the at least one pixel. N is an integer larger than or equal to 2.

公开(公告)号：US11070732B2

公开(公告)日：2021-07-20

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 ,  H04N19/85 ,  H04L1/16 ,  H04N19/503

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.

公开(公告)号：US11356672B2

公开(公告)日：2022-06-07

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.

公开(公告)号：US11172218B2

公开(公告)日：2021-11-09

申请号：US17017216

申请日：2020-09-10

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Lei Zhu

IPC: H04N19/527 ,  H04N19/139 ,  H04N19/513

Abstract: A motion estimation method includes calculating a global camera motion vector for a region of an image frame, calculating a global estimated motion vector for the region of the image frame, and determining a global motion vector for the region based on the global camera motion vector and the global estimated motion vector.

公开(公告)号：US11134250B2

公开(公告)日：2021-09-28

申请号：US15930135

申请日：2020-05-12

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Liang Zhao ,  Wenyi Su ,  Lei Zhu

IPC: H04N7/12 ,  H04N19/149 ,  H04N19/115 ,  H04N19/172 ,  H04N19/196

Abstract: A method for controlling video coding including obtaining an image frame. The image frame includes a plurality of coding block groups each associated with a respective coding control model. The method further includes determining whether a coding block group is an initial coding block group or a subsequent coding block group of the image frame. If the coding block group is the initial coding block group, for an initial coding control model associated with the initial coding block group, values of one or more coding parameters are determined based on a bit allocation for the initial coding block group, and the initial coding block group is encoded using the initial coding control model with the determined values of the one or more coding parameters. If the coding block group is the subsequent coding block group, a bit allocation for the subsequent coding block group is updated based on the encoded initial coding block group.