Patents by Inventor Kai Zhang

Kai 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).

  • Scaling process for coding block
    Patent number: 11716491
    Abstract: Methods, systems, and devices for luma mapping with chroma scaling for video and image coding are disclosed. An example method of video processing includes performing, for a current region comprising a luma block, a first chroma block, and a second chroma block, a conversion between the current region of a video and a bitstream representation of the video according to a rule that specifies an order in which, during decoding, the first chroma block and the second chroma block are processed based on mapped sample values of the luma block.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: August 1, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Kui Fan, Li Zhang, Kai Zhang, Yue Wang
  • RAPID ACTIVE VIBRATION REDUCTION METHOD FOR HIGH-SPEED MOTION STAGE
    Publication number: 20230235810
    Abstract: A rapid active vibration reduction method for a high-speed motion stage includes acquiring motion parameters of a motion body of the motion stage in current motion; determining a vibration reduction mode of a vibration reduction device according to the motion parameters; and controlling an action end of the vibration reduction device to contact with the motion body of the motion stage or contact with a driving device for driving the motion body to move based on the vibration reduction mode, so that a contact friction force used for suppressing vibration of the motion body is generated. Realizing vibration reduction by means of active friction can reduce vibration of the motion body in a specific stage needing vibration reduction, and the action end of the vibration reduction device does not need to contact with the motion body or does not need to contact with the driving device before vibration reduction.
    Type: Application
    Filed: January 13, 2023
    Publication date: July 27, 2023
    Inventors: Lanyu ZHANG, Jian GAO, Shaoxuan ZHANG, Yun CHEN, Xin CHEN, Kai ZHANG
  • SIGNALLING OF MULTIVIEW INFORMATION
    Publication number: 20230239502
    Abstract: Systems, methods and apparatus for encoding, decoding or transcoding digital video are described. One example method of processing video data includes performing a conversion between a video and a bitstream of the video according to a format rule, wherein the format rule specifies that a supplemental enhancement information field or a video usability information syntax structure included in the bitstream indicates whether the bitstream comprises a multiview bitstream in which multiple views are coded in multiple video layers.
    Type: Application
    Filed: March 29, 2023
    Publication date: July 27, 2023
    Inventors: Ye-Kui Wang, Li Zhang, Kai Zhang, Zhipin Deng
  • METHODS AND SYSTEMS FOR INTEGRATING MODEL DEVELOPMENT CONTROL SYSTEMS AND MODEL VALIDATION PLATFORMS
    Publication number: 20230236951
    Abstract: Methods and systems are described herein for integrating model development control systems and model validation platforms. For example, the methods and systems discussed herein recite the creation and use of a model validation platform. This platform operates outside of the environment of the independently validated models as well as the native platform into which the independently validated models may be incorporated. The model validation platform may itself include a model that systematically validates other independently validated models. The model validation platform may then provide users substantive analysis of a model and its performance through one or more user interface tools such as side-by-side comparisons, recommended adjustments, and/or a plurality of adjustable model attributes for use in validating an inputted model.
    Type: Application
    Filed: January 23, 2023
    Publication date: July 27, 2023
    Applicant: Capital One Services, LLC
    Inventors: Yu LIN, Qian SHEN, Zhenyu LIU, Kai ZHANG, Kangning LI, Yanni DING, Jie TANG, Piero MONTEVERDE
  • RESTRICTIONS OF USAGE OF TOOLS ACCORDING TO REFERENCE PICTURE TYPES
    Publication number: 20230239465
    Abstract: A video processing method includes determining, for a conversion between a current video block of a video including multiple video blocks and a coded representation of the video, and from types of reference pictures used for the conversion, applicability of a coding tool to the current video block and performing the conversion based on the determining. The method may be performed by a video decoder or a video encoder or a video transcoder.
    Type: Application
    Filed: February 21, 2023
    Publication date: July 27, 2023
    Inventors: Na Zhang, Hongbin Liu, Li Zhang, Kai Zhang, Yue Wang
  • SIGNALLING OF AUXILIARY INFORMATION
    Publication number: 20230239511
    Abstract: Systems, methods and apparatus for encoding, decoding or transcoding digital video are described. One example method of processing video data includes performing a conversion between a video and a bitstream of the video according to a format rule, wherein the format rule specifies that a supplemental enhancement information field included in the bitstream indicates whether the bitstream comprises one or more video layers that represent auxiliary information.
    Type: Application
    Filed: March 29, 2023
    Publication date: July 27, 2023
    Inventors: Ye-Kui Wang, Li Zhang, Kai Zhang, Zhipin Deng
  • Palette mode coding in prediction process
    Patent number: 11711510
    Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a number of intra-coded neighboring blocks of the current block for a combined inter and intra prediction mode according to a rule that specifies a manner of treating a block coded using a palette coding mode in counting the number of intra-coded neighboring blocks for the combined inter and intra prediction mode. The method also includes performing the conversion based on the determining.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: July 25, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Weijia Zhu, Li Zhang, Jizheng Xu, Kai Zhang, Hongbin Liu, Yue Wang
  • Use and signaling of refining video coding tools
    Patent number: 11711547
    Abstract: An example method of video processing includes performing a conversion between a video picture of a video and a bitstream representation of the video. The bitstream representation conforms to a format rule. The format rule specifies that applicability of a Decoder-side Motion Vector Refinement coding tool and a Bi-Directional Optical Flow coding tool for the video picture are indicated separately in the bitstream representation.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: July 25, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Hongbin Liu, Zhipin Deng, Jizheng Xu, Yue Wang
  • Intra prediction using polynomial model
    Patent number: 11711516
    Abstract: A method for video processing includes performing a conversion between a current video block and a bitstream representation of the current video block using an intra-prediction coding scheme based on an n-order polynomial model using at least one variable associated with the current video block, where n is an integer greater than or equal to zero, wherein the conversion includes generating the current video block from the bitstream representation or generating the bitstream representation from the current video block.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: July 25, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Jizheng Xu, Yue Wang
  • ALIGNMENT OF PREDICTION WEIGHTS IN VIDEO CODING
    Publication number: 20230232032
    Abstract: A method of video processing is described. The method includes determining chroma weights used for determining a chroma prediction block of a chroma block of a current block of a video by blending predictions of the chroma block according to a rule, and performing a conversion between the current block and a coded representation of the video according to the determining. The rule specifies that the chroma weights are determined from luma weights of a collocated luma block of the current block. The current block is coded with a geometric partitioning mode.
    Type: Application
    Filed: February 24, 2023
    Publication date: July 20, 2023
    Inventors: Zhipin Deng, Li Zhang, Hongbin Liu, Kai Zhang, Jizheng Xu, Yue Wang
  • Piezoresistive Pressure Sensor Based on Foam Structure
    Publication number: 20230228633
    Abstract: Disclosed herein is a piezoresistive pressure sensor, including: a continuous piezoresistive foam layer; an electrode array layer, on one side of which the continuous piezoresistive foam layer is disposed; and an artificial leather layer as cover layer, which is disposed on the continuous piezoresistive foam layer; where the continuous piezoresistive foam layer is made by doping the foam with conductive materials. The piezoresistive pressure sensor can provide overall 2D-pressure mapping in a large area and has good flexibility and reliability to be combined with soft surfaces.
    Type: Application
    Filed: June 10, 2021
    Publication date: July 20, 2023
    Inventors: JunMin LEE, Wei Hsiang LIN, Marc SCHROEDER, Marc MARTIN, Zhong Kai ZHANG, Chang Xi LI, Min Jung KIM, Ikbin CHO
  • CLASSIFICATION IN ADAPTIVE LOOP FILTERING
    Publication number: 20230231998
    Abstract: A method of video processing includes determining, for a conversion of a block of a video picture in a video and a bitstream representation of the video, gradients of a subset of samples in a region for a classification operation in a filtering process. The region has a dimension of M×N and the block has a dimension of K×L, M, N, K, L being positive integers. The block is located within the region. The method also includes performing the conversion based on the determining.
    Type: Application
    Filed: February 27, 2023
    Publication date: July 20, 2023
    Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • TRANSFORM BLOCK SIZE RESTRICTION IN VIDEO CODING
    Publication number: 20230231997
    Abstract: A visual media processing method includes performing a conversion between a current video block of a visual media data and a bitstream representation of the current video block. The bitstream representation is configured according to a format rule that specifies that a syntax element is selectively included or excluded in the bitstream representation indicative of a maximum number of merge candidates for a coding tool, thereby indicating whether the coding tool is enabled or disabled for the conversion. The maximum number of merge candidates for the coding tool is zero or a positive number.
    Type: Application
    Filed: February 23, 2023
    Publication date: July 20, 2023
    Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Interaction of asymmetric weighted merges and other coding tools
    Patent number: 11706441
    Abstract: Devices, systems and methods for asymmetric weighted bi-predictive merging in video coding are described. In a representative aspect, a method for decoding video data includes determining that a current video block of the video data is predicted from an asymmetric bi-predictive merge candidate, wherein different weights are used for a first reference block and a second reference block, and making, based on the determination, a determination between enabling and disabling a coding tool for the current video block. In a case that the current video block is predicted from an asymmetric bi-predictive merge candidate, the coding tool is not applied to the current video block.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: July 18, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Yue Wang
  • Signaling for reference picture resampling
    Patent number: 11706409
    Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a coded representation of the video, that a resolution of a current picture containing the current block and a reference picture used for the conversion are different, and performing the conversion based on the determining such that predicted values of a group of samples of the current block are generated using a horizontal or a vertical interpolation filter.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: July 18, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Hongbin Liu, Zhipin Deng, Jizheng Xu, Yue Wang
  • Padding process at unavailable sample locations in adaptive loop filtering
    Patent number: 11706462
    Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video using a coding tool that accesses samples outside of the current block, that neighboring samples used for the conversion are unavailable. Samples that are located across a boundary of a video unit of the video are considered as unavailable samples. The method also includes performing, based on the determining, the conversion by padding samples in place of the neighboring samples that are unavailable. The padding samples are determined using samples that are restricted to be within a current processing unit associated with the current block.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: July 18, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Yue Wang
  • Selection of coded motion information for LUT updating
    Patent number: 11706406
    Abstract: A method of video decoding includes maintaining a number of tables, wherein each table includes a set of motion candidates, wherein each motion candidate is associated with corresponding motion information derived from previously video blocks, performing a conversion between a video block and a coded representation of the video block, and determining, based on a conversion condition of the video block, whether to update at least one of the tables by adding motion information corresponding to the video block.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: July 18, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Residual coding for transform skipped blocks
    Patent number: 11706414
    Abstract: A video processing method includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether to enable a level mapping operation or a level remapping operation based on a rule, wherein the level mapping operation or the level remapping operation includes changing between a first representation of a residual coefficient of the current block and a second representation of the residual coefficient of the current block based on neighboring residual coefficients of the residual coefficient; and performing the conversion by selectively using the level mapping operation or the level remapping operation based on the determining.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: July 18, 2023
    Assignees: Beijing Bytedance Network Technology Co., Ltd., Bytedance Inc.
    Inventors: Li Zhang, Kai Zhang, Jizheng Xu, Hongbin Liu, Yue Wang
  • Data management method and apparatus
    Patent number: 11706107
    Abstract: This application provides a data management method and an apparatus, and relate to the field of data storage, to implement unified management of management data.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: July 18, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ruiyue Xu, Kai Zhang
  • Inter prediction with refinement in video processing
    Patent number: 11706421
    Abstract: Devices, systems and methods for digital video coding, which includes inter prediction with refinement, are described. An exemplary method of video processing includes determining to use, for a conversion between a current block of a video and a bitstream representation of the video, a first linear optimization model for the conversion using a first coding mode, the first linear optimization model being derived from a second linear optimization model that is used for the conversion using a second coding mode, and performing, based on the determining, the conversion. Another exemplary method of video processing includes determining to use, for a conversion between a current block of a video and a bitstream representation of the video, a gradient value computation algorithm for a bi-directional optical flow tool, and performing, based on the determining, the conversion.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: July 18, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Hongbin Liu, Yue Wang