Patents by Inventor Li Zhang

Li Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Motion Candidates Derivation
    Publication number: 20240267554
    Abstract: Devices, systems and methods for encoding and decoding digital video using a look-up tables (LUTs) containing motion candidates are described. A method of video processing includes maintaining one or more tables, at least one table of the one or more tables is associated with one or more entries, deriving, based on a first set of motion candidates in the at least one table, a second set of motion candidates, and performing, based on the second set of motion candidates, a conversion between a current block of a video and a bitstream representation of the video.
    Type: Application
    Filed: April 12, 2024
    Publication date: August 8, 2024
    Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • METHOD, APPARATUS, AND MEDIUM FOR POINT CLOUD CODING
    Publication number: 20240267527
    Abstract: Embodiments of the present disclosure provide a method for point cloud coding. The method comprises: determining, during a conversion between a current frame of a point cloud sequence and a bitstream of the point cloud sequence, motion information of the current frame; determining a coded representation of the motion information based at least in part on an absolute value of the motion information; and performing the conversion based on the coded representation. Compared with the conventional solution, the proposed method can advantageously improve the motion coding efficiency and coding quality.
    Type: Application
    Filed: April 12, 2024
    Publication date: August 8, 2024
    Inventors: Wenyi WANG, Yingzhan Xu, Kai Zhang, Li Zhang
  • MEASUREMENT METHOD, MEASUREMENT CONFIGURATION METHOD, AND RELATED COMMUNICATION APPARATUS
    Publication number: 20240267798
    Abstract: First indication information is newly added to a measurement configuration received by a terminal device, and the first indication information indicates the terminal device to perform grouping based on whether an MO is a first-type MO (that is, an MO corresponding to conditional handover CHO and/or an MO corresponding to conditional PSCell addition/change CPAC), and determine a measurement parameter of each group. Therefore, the terminal device groups a plurality of MOs into a first group of MOs (including only the first-type MO) and a second group of MOs (excluding the first-type MO), correspondingly determines measurement parameters, and measures each group of MOs by using various measurement parameters.
    Type: Application
    Filed: April 18, 2024
    Publication date: August 8, 2024
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Li Zhang, Jing Han, Hong Li, Zhongyi Shen
  • METHOD, APPARATUS AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240267510
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: deriving, during a conversion between a target block of a video and a bitstream of the target block, a motion vector predictor for the target block from a parameter table that stores a set of affine parameters from at least one previously coded block, the target block being a non-affine coded block; and performing the conversion based on the motion vector predictor.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 8, 2024
    Inventors: Kai Zhang, Li ZHANG, Zhipin DENG
  • METHOD, DEVICE, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240267512
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a target block of a video and a bitstream of the video, a list of adaptive decoder side motion vector refinement (ADMVR) merge candidates for the target block in an ADMVR merge mode; reordering the list of ADMVR merge candidates; and performing the conversion based on the reordered list of ADMVR merge candidates. Compared with the conventional solution, the proposed method can advantageously improve the coding effectiveness and coding efficiency.
    Type: Application
    Filed: April 15, 2024
    Publication date: August 8, 2024
    Inventors: Na ZHANG, Kia ZHANG, Li ZHANG, Yang WANG
  • Methods of coding images/videos with alpha channels
    Patent number: 12058310
    Abstract: Example implementations include a method, apparatus and computer-readable medium of video coding, comprising performing a conversion between a video comprising a plurality of pictures and a bitstream of the video, wherein each picture comprises an alpha layer and a base layer, and wherein the bitstream comprises a current block in the alpha layer of a current picture that is predicted from one or more reference blocks in the base layer.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: August 6, 2024
    Assignee: LEMON INC.
    Inventors: Weijia Zhu, Jizheng Xu, Li Zhang, Yue Wang
  • Level information in video coding
    Patent number: 12058380
    Abstract: Methods and apparatus for video processing are described. The processing may include video encoding, video decoding, or video transcoding. An example video processing method includes performing a conversion between a video and a bitstream of the video including one or more output layer sets according to a format rule. At least one of the one or more output layer sets consists of a trick mode access representation including only intra random access points pictures or only intra-coded pictures. The format rule specifies whether or how level information for the trick mode representation is indicated in the bitstream.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: August 6, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Ye-kui Wang, Li Zhang
  • Context for coding affine mode adaptive motion vector resolution
    Patent number: 12058367
    Abstract: A method for video processing is provided. The method includes determining that a conversion between a current video block of a video and a coded representation of the current video block is based on a non-affine inter AMVR mode; and performing the conversion based on the determining, wherein the coded representation of the current video block is based on a context based coding, and wherein a context used for coding the current video block is modeled without using an affine AMVR mode information of a neighboring block during the conversion.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: August 6, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Yue Wang
  • Concept of using one or multiple look up tables to store motion information of previously coded in order and use them to code following blocks
    Patent number: 12058364
    Abstract: Devices, systems and methods for coding video using one or more tables to store motion information and processing subsequent blocks are described. In one aspect, a video coding method is provided to include deriving motion information for a first video block, wherein one or more candidates of one or more tables are selectively checked during a motion candidate list construction process which is used to derive the motion information for the first video block, wherein each table of the one or more tables includes motion candidates derived from previously coded video blocks that are coded prior to the first video block; and coding, based on the motion information, the first video block.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: August 6, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Electric field probe and magnetic field probe calibration system and method based on multiple components
    Patent number: 12055616
    Abstract: The present application discloses calibration system and method for an electric field probe and a magnetic field probe based on multiple components. The system includes a microstrip line calibration assembly, a clamp, a vector network analyzer and a data processing unit; two groups of microstrip lines included in the microstrip line calibration assembly can be distributed on different routing layers of the same PCB board or on independent PCB boards; the first group of microstrip lines is single microstrip lines or differential lines under common mode excitation, which are used to generate a main component Hy of a magnetic field, and the second group of microstrip lines is differential lines under differential mode excitation, which are used to generate a main component Ex of an electric field.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: August 6, 2024
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Xingchang Wei, Li Zhang
  • Method and apparatus for determining health status
    Patent number: 12053297
    Abstract: Systems and methods for determining a heath status of a patient through an automated interview. One of the systems include one or more computers in one or more locations and one or more storage devices storing instructions that, when executed by one or more computers, cause the one or more computers to perform operations including: providing, to a user interface of a user device, questions for a user to respond to in an interactive manner, in which each of the questions following the first questions is adaptive based on the user's response to one or more of the previous questions; capturing motion and appearance of the user in a video sequence while the user is responding to the questions; and analyzing the motion of the user in the video sequence to determine one or more indications of a disease or of a change in a disease progression.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: August 6, 2024
    Assignee: AIC Innovations Group, Inc.
    Inventors: Adam Hanina, Daniel Glasner, Li Zhang
  • METHOD, DEVICE, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259552
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a target video block of a video and a bitstream of the video, a multi-hypothesis prediction process for the target video block based on a plurality of motion candidates from a non-regular merge list; and performing the conversion based on a result of the multi-hypothesis prediction process. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and performance.
    Type: Application
    Filed: May 17, 2022
    Publication date: August 1, 2024
    Inventors: Zhipin DENG, Li ZHANG, Kai ZHANG, Na ZHANG
  • METHOD, APPARATUS, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259558
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a target block of a video and a bitstream of the video, a list of regular merge candidates for the target block in a regular merge mode; reordering the list of regular merge candidates based on a determination whether a condition is satisfied to perform decoder-side motion vector refinement (DMVR) or multi-pass DMVR process for a regular merge candidate in the list of regular merge candidates; and performing the conversion based on the reordered list of regular merge candidates. Compared with the conventional solution, the proposed method can advantageously improve the coding effectiveness and coding efficiency.
    Type: Application
    Filed: April 15, 2024
    Publication date: August 1, 2024
    Inventors: Na ZHANG, Kai ZHANG, Li ZHANG, Yang WANG
  • METHOD, DEVICE, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259591
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a target video block of a video and a bitstream of the video, bilateral matching to refine uni-directional motion information for the target video block, to obtain refined motion information; and performing the conversion based on the refined motion information. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and performance.
    Type: Application
    Filed: May 17, 2022
    Publication date: August 1, 2024
    Inventors: Zhipin DENG, Li ZHANG, Kai ZHANG, Na ZHANG
  • METHOD, DEVICE, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259560
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: processing, during a conversion between a picture of a video and a bitstream of the video, a first video block in the picture based on a combination of decoder-side intra prediction mode derivation (DIMD) and intra prediction with subpartitions (ISP), the DIMD being used for deriving at least one intra prediction mode (IPM); and performing the conversion based on the first video block. Compared with the conventional solution, the proposed method can advantageously improve the coding effectiveness and coding efficiency.
    Type: Application
    Filed: May 19, 2022
    Publication date: August 1, 2024
    Inventors: Yang WANG, Li ZHANG, Kai ZHANG
  • METHOD, DEVICE, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259559
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: constructing, during a conversion between a target block of a video and a bitstream of the video, a list of template matching (TM) merge candidates for the target block in a TM merge mode; reordering a TM merge candidate in the list of TM merge candidates based on a determination whether a first condition is satisfied to perform TM refinement for the TM merge candidate and a second condition is satisfied to perform decoder-side motion vector refinement (DMVR) or multi-pass DMVR for the TM merge candidate; and performing the conversion based on the reordered TM merge candidate. Compared with the conventional solution, the proposed method can advantageously improve the coding effectiveness and coding efficiency.
    Type: Application
    Filed: April 15, 2024
    Publication date: August 1, 2024
    Inventors: Na ZHANG, Kai ZHANG, Li ZHANG, Yang WANG
  • METHOD, APPARATUS, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259555
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, whether a block vector (BV) candidate of the target video block is valid; in accordance with a determination that the BV candidate is valid, adding the BV candidate in an intra block copy (IBC) candidate list; and performing the conversion based on the IBC candidate list.
    Type: Application
    Filed: March 29, 2024
    Publication date: August 1, 2024
    Inventors: Na ZHANG, Kai ZHANG, Li ZHANG, Jizheng XU
  • METHOD, DEVICE, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259598
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a video unit of a video and a bitstream of the target block, information related to a combined inter-intra prediction (CIIP) enhancement mode, the video unit being applied with the CIIP enhancement mode; and performing the conversion based on the information related to the CIIP enhancement mode.
    Type: Application
    Filed: March 29, 2024
    Publication date: August 1, 2024
    Inventors: Zhipin DENG, Kai Zhang, Li Zhang
  • METHOD, APPARATUS, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259586
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: deriving, during a conversion between a target block of a video and a bitstream of the target block, a motion vector predictor for the target block from a parameter table that stores a set of affine parameters from at least one previously coded block, the target block being a non-affine coded block; and performing the conversion based on the motion vector predictor.
    Type: Application
    Filed: March 28, 2024
    Publication date: August 1, 2024
    Inventors: Kai ZHANG, Li ZHANG, Zhipin DENG
  • METHOD, APPARATUS, AND MEDIUM FOR VIDEO PROCESSING
    Publication number: 20240259588
    Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, at least one group of motion vector predictions (MVP) candidates of the target video block; determining an MVP candidate list by sorting the at least one group of MVP candidates based on respective template matching costs of MVP candidates in the at least one group; and performing the conversion based on the MVP candidate list. In this way, a proper MVP candidate list can be determined, and thus the coding effectiveness and coding efficiency can be improved.
    Type: Application
    Filed: April 11, 2024
    Publication date: August 1, 2024
    Inventors: Lei Zhao, Kai Zhang, Li Zhang