Patents by Inventor Yin Zhao

Yin Zhao 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).

  • Patent number: 11743451
    Abstract: An intra prediction method by using cross component liner prediction mode (CCLM), includes: determining a luma block corresponding to a current chroma block; obtaining luma reference samples of the luma block based on determining L available chroma reference samples of the current chroma block, wherein the obtained luma reference samples of the luma block are down-sampled luma reference samples; calculating linear model coefficients based on the luma reference samples and chroma reference samples that correspond to the luma reference samples; and obtaining a prediction for the current chroma block based on the linear model coefficients and values of a down-sampled luma block of the luma block.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: August 29, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiang Ma, Jianle Chen, Yin Zhao, Haitao Yang
  • Patent number: 11736706
    Abstract: A video decoding method includes: obtaining block information of a current picture block; determining, based on the block information, whether a split mode of a set of optional split modes is available; determining a split mode of the current picture block from a determined available split mode; obtaining at least one coding unit (CU) from the current picture block based on the split mode of the current picture block, and parsing a bitstream including the current picture block, to obtain decoding information of the at least one CU, and decoding the at least one CU based on the decoding information, to obtain a reconstructed block.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: August 22, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yin Zhao, Haitao Yang, Lian Zhang
  • Patent number: 11722668
    Abstract: A video decoding method includes parsing a bitstream to obtain a split mode to transform units (TUs) in a current coding unit (CU). Each of the TUs has a serial number in a one-to-one correspondence with positions of the TUs in the current CU. A transform coefficient of a luminance transform block of a current TU in the TUs is obtained. A transform type of the luminance transform block of the current TU is obtained based on the split mode and a serial number of the current TU. An inverse transform on the transform coefficient of the luminance transform block of the current TU is performed based on the transform type of the luminance transform block of the current TU to obtain a reconstructed residual of the luminance transform block of the current TU. A reconstructed block of the current CU is obtained based on the reconstructed residual.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: August 8, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yin Zhao, Haitao Yang, Jianle Chen
  • Patent number: 11716479
    Abstract: A method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax and a coding unit syntax, the transform unit syntax includes a value of a first flag and a value of a second flag related to, respectively, a first chroma transform block and a second chroma transform block of a current transform unit or a current sub-transform unit within the current transform unit, the first or second flag specifies whether the first or second chroma transform block contains at least one transform coefficient levels not equal to 0, the coding unit syntax includes a value of a third flag specifying whether a transform tree structure is present or not; and deriving a value of a fourth flag based on the values of the first, second, and third flags, the fourth flag specifies whether a luma transform block contains at least one transform coefficient levels not equal to 0.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: August 1, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Roman Igorevich Chernyak, Yin Zhao, Sergey Yurievich Ikonin, Jianle Chen
  • Publication number: 20230239518
    Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning an image to create at least one coding tree unit (CTU) with at least one coding tree node. The mechanism further includes determining that the coding tree node height is twice a maximum transform unit (TU) height and the coding tree node width is twice a maximum TU width. The mechanism further includes selecting a split mode for the coding tree node based on the determination. The split mode is selected from a quad-tree split, a horizontal binary-tree split, and no split. The mechanism further includes applying the split mode to the coding tree node to create one or more coding units (CUs). The mechanism further includes encoding the CUs into a bitstream. The mechanism further includes transmitting the bitstream toward a decoder.
    Type: Application
    Filed: March 31, 2023
    Publication date: July 27, 2023
    Inventors: Jianle Chen, Yin Zhao, Haitao Yang
  • Publication number: 20230239500
    Abstract: An intra prediction method includes obtaining respective intra prediction modes or texture distributions of P reconstructed picture blocks in a surrounding region of a current block; obtaining, based on the respective intra prediction modes or texture distributions of the P reconstructed picture blocks, Q priori candidate intra prediction modes of the current block and Q probability values; obtaining, based on M probability values corresponding to M priori candidate intra prediction modes, M weighting factors corresponding to the M priori candidate intra prediction modes; separately performing intra prediction based on the M priori candidate intra prediction modes to obtain M predicted values; and obtaining a predicted value of the current block based on a weighted summation of the M predicted values and the corresponding M weighting factors.
    Type: Application
    Filed: March 28, 2023
    Publication date: July 27, 2023
    Inventors: Haitao Yang, Nan Song, Xu Chen, Xiang Ma, Huanbang Chen, Yin Zhao
  • Patent number: 11711511
    Abstract: A picture prediction method includes receiving a bitstream, parsing the bitstream to obtain a prediction mode of a current block, when the prediction mode of the current block is a combined intra and inter prediction mode, selecting an execution manner of a triangular prediction unit mode according to a preset policy, determining motion information of the current block according to the execution manner of the triangular prediction unit mode, performing a motion compensation process based on the motion information, to obtain an inter prediction sample, obtaining an intra prediction sample according to the prediction mode of the current block, and combining the inter prediction sample and the intra prediction sample to obtain a prediction picture of the current block.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: July 25, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Weiwei Xu, Haitao Yang, Yin Zhao
  • Patent number: 11695968
    Abstract: Embodiments of this application disclose a decoding method includes: obtaining a bitstream including picture data; parsing the bitstream to obtain node split mode information of a first-level coding tree and node split mode information of a second-level coding tree, if the split mode corresponding to the first node is no further splitting, parsing the bitstream to obtain encoding information of the first node; and decoding and reconstructing, based on the encoding information of the first node, a coding unit corresponding to the first node, to obtain a picture corresponding to the picture data.
    Type: Grant
    Filed: December 31, 2021
    Date of Patent: July 4, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yin Zhao, Haitao Yang, Shan Liu
  • Publication number: 20230209053
    Abstract: A method of decoding a coded video bitstream implemented by a video decoder. The method includes determining a split mode for a coding tree unit (CTU) in an encoded bitstream, where the split mode is one of triple tree (TT), vertical binary tree (BT), and horizontal BT; marking a coding unit (CU) from the CTU as not to be predicted by intra prediction when one of three conditions is met; parsing the encoded bitstream to obtain a prediction unit and residual information for the CU from the CTU; and reconstructing the CU based on the prediction unit and the residual information when the CU has been marked.
    Type: Application
    Filed: February 20, 2023
    Publication date: June 29, 2023
    Inventors: Jianle Chen, Yin Zhao, Semih Esenlik
  • Patent number: 11689723
    Abstract: A method for inverse quantization of a current block of a picture is provided. The method is performed by a decoder, and the picture comprises a luminance component and a chrominance component, where the luminance component and the chrominance component are partitioned into multiple blocks. The method includes obtaining one or more existing quantization parameter (QP) values from a received bitstream, wherein the one or more existing QP values are associated with a current block in the chrominance component; determining a QP value for the current block in the chrominance component based on the one or more existing QP values; performing inverse quantization on the current block in the chrominance component using the determined QP value.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: June 27, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Roman Igorevich Chernyak, Alexander Alexandrovich Karabutov, Sergey Yurievich Ikonin, Timofey Mikhailovich Solovyev, Haitao Yang, Jianle Chen, Yin Zhao
  • Publication number: 20230188739
    Abstract: A video decoding method includes determining a usage of an SVT- vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.
    Type: Application
    Filed: February 9, 2023
    Publication date: June 15, 2023
    Inventors: Yin Zhao, Haitao Yang, Jianle Chen
  • Publication number: 20230188711
    Abstract: A picture prediction method includes receiving a bitstream; parsing the bitstream to obtain a prediction mode of a current block; when the prediction mode of the current block is a combined intra and inter prediction mode, selecting an execution manner of a triangular prediction unit mode according to a preset policy; determining motion information of the current block according to the execution manner of the triangular prediction unit mode; performing a motion compensation process based on the motion information, to obtain an inter prediction sample; obtaining an intra prediction sample according to the prediction mode of the current block; and combining the inter prediction sample and the intra prediction sample to obtain a prediction picture of the current block.
    Type: Application
    Filed: February 14, 2023
    Publication date: June 15, 2023
    Inventors: Weiwei Xu, Haitao Yang, Yin Zhao
  • Patent number: 11647207
    Abstract: Inter prediction method and apparatus are disclosed to resolve problems in the conventional technology that prediction samples obtained in an inter prediction mode are spatially discontinuous, prediction efficiency is affected, and prediction residual energy is relatively high. The method includes: parsing a bitstream to obtain motion information of a to-be-processed picture block; performing motion compensation on the to-be-processed picture block based on the obtained motion information, to obtain a prediction block of the to-be-processed picture block, where the prediction block of the to-be-processed picture block includes a prediction value of a target sample; and performing weighting calculation on one or more reconstructed values of one or more reference samples and the prediction value of the target sample, to update the prediction value of the target sample, where the reference sample(s) have a preset spatial position relationship with the target sample.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: May 9, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Weiwei Xu, Haitao Yang, Yin Zhao
  • Patent number: 11638003
    Abstract: A video encoding method, a video decoding method, an apparatus, a device, and a storage medium include parsing a first flag from the video bitstream when a video bitstream is allowed to be decoded by referencing a library picture corresponding to a library picture bitstream, using a value of a target parameter of the video bitstream as a value of a target parameter of the library picture bitstream referenced by the video bitstream when a value of the first flag is a first value, and reconstructing, based on the value of the target parameter of the library picture bitstream referenced by the video bitstream and the library picture bitstream referenced by the video bitstream to obtain the library picture corresponding to the library picture bitstream referenced by the video bitstream.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: April 25, 2023
    Assignees: Zhejiang University, Huawei Technologies Co., Ltd.
    Inventors: Lu Yu, Ye-Kui Wang, Hualong Yu, Yin Zhao, Yuqun Fan, Xiaoding Gao, Haitao Yang
  • Patent number: 11606571
    Abstract: A video decoding device receives a bitstream including a prediction block and a residual block with coefficients transformed by a Spatial Varying Transform (SVT). The video decoding device determines a type of SVT employed to transform the coefficients in the residual block and determines a position of the SVT relative to the residual block by determining a candidate position step size and a position index for the SVT. The video decoding device applies an inverse transform to the coefficients based on the SVT type and position to create a reconstructed residual block. The video decoding device applies the reconstructed residual block to the prediction block to reconstruct a video block and reconstructs a video sequence for display, the video sequence including a video frame that includes the reconstructed video block.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: March 14, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yin Zhao, Haitao Yang, Shan Liu
  • Publication number: 20230070282
    Abstract: This application provides a motion vector obtaining method and apparatus. The method includes: determining a target offset vector of a block and identifier information of a target picture, wherein the block comprises at least one sub-block; determining a location of the sub-block; determining, as a target location coordinate value of a collocated sub-block, a location coordinate value obtained by performing a clipping operation on an initial location coordinate value in a range, wherein the initial location coordinate value is based on the location of the sub-block and the target offset vector; and obtaining a motion vector of the sub-block based on a motion vector corresponding to the target location coordinate value. Thus, a range of the target offset vector is limited, so that a quantity of memory read times can be reduced in a process of obtaining the motion vector of the collocated sub-block.
    Type: Application
    Filed: August 29, 2022
    Publication date: March 9, 2023
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Huanbang Chen, Yin ZHAO, Haitao YANG, Jianle CHEN
  • Patent number: 11601663
    Abstract: A video decoding method includes determining a usage of an SVT-vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: March 7, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yin Zhao, Haitao Yang, Jianle Chen
  • Publication number: 20230069387
    Abstract: A video processing method includes: obtaining prediction information of a CU; obtaining, when the CU comprises only one residual TU and a size of the residual TU is less than a size of the CU, a TU partitioning mode of the CU and a residual position of the residual TU, wherein the TU partitioning mode and the residual position are used to determine a horizontal transform type and a vertical transform type; obtaining transform coefficients of the residual TU based on the horizontal transform type and the vertical transform type; and generating a bitstream that is for storing or transmitting and that includes the prediction information, a first flag that indicates the TU partitioning mode, a second flag that indicates the residual position, and the transform coefficients.
    Type: Application
    Filed: October 25, 2022
    Publication date: March 2, 2023
    Inventors: Yin Zhao, Haitao Yang, Jianle Chen
  • Publication number: 20230065862
    Abstract: The present disclosure relates to scalable encoding and decoding of pictures. In particular, a picture is processed by one or more network layers of a trained module to obtain base layer features. Then, enhancement layer features are obtained, e.g. by a trained network processing in sample domain. The base layer features are for use in computer vision processing. The base layer features together with enhancement layer features are for use in picture reconstruction, e.g. for human vision. The base layer features and the enhancement layer features are coded in a respective base layer bitstream and an enhancement layer bitstream. Accordingly, a scalable coding is provided which supports computer vision processing and/or picture reconstruction.
    Type: Application
    Filed: November 4, 2022
    Publication date: March 2, 2023
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Alexander Alexandrovich Karabutov, Hyomin Choi, Ivan Bajic, Robert A. Cohen, Saeed Ranjbar Alvar, Sergey Yurievich Ikonin, Elena Alexandrovna Alshina, Yin Zhao
  • Patent number: 11589048
    Abstract: A method of decoding a coded video bitstream implemented by a video decoder. The method includes determining a split mode for a coding tree unit (CTU) in an encoded bitstream, where the split mode is one of triple tree (TT), vertical binary tree (BT), and horizontal BT; marking a coding unit (CU) from the CTU as not to be predicted by intra prediction when one of three conditions is met; parsing the encoded bitstream to obtain a prediction unit and residual information for the CU from the CTU; and reconstructing the CU based on the prediction unit and the residual information when the CU has been marked.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: February 21, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianle Chen, Yin Zhao, Semih Esenlik