Patents by Inventor Kui Wang

Kui Wang 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).

  • Constraints on supplemental enhancement information in video coding
    Patent number: 11997301
    Abstract: Several techniques for video encoding and video decoding are described. An example method of processing video data includes performing a conversion between a video and a bitstream of the video, wherein the conversion is performed according to a format rule that specifies that a supplemental enhancement information network abstraction layer unit includes a network abstraction layer unit type equal to a prefix supplemental enhancement information network abstraction layer unit type in response to the supplemental enhancement information network abstraction layer unit including a scalable nesting supplemental enhancement information message that includes a supplemental enhancement information message not associated with a particular payload type.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: May 28, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Sub-picture track level indicator
    Patent number: 11997293
    Abstract: A mechanism for processing video data is disclosed. One or more level indicators for a set of subpictures included in one or more subpicture tracks are determined. The subpicture tracks are included in a subpicture entity group. The level indicators are included in at least one of one or more sample groups carrying information for the set of subpictures, or in a data structure specifying the subpicture entity group. A conversion is performed between a visual media data and a media data file based on the level indicator.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: May 28, 2024
    Assignee: Lemon Inc.
    Inventor: Ye-kui Wang
  • Flexible tiling improvements in video coding
    Patent number: 11997291
    Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of first level tiles. A subset of the first level tiles is partitioned into a plurality of second level tiles. The first level tiles and the second level tiles are assigned into one or more tile groups such that all tiles in an assigned tile group containing the second level tiles are constrained to cover a rectangular region of the picture. The first level tiles and the second level tiles are encoded into a bitstream. The bitstream is stored for communication toward a decoder.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: May 28, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, Fnu Hendry, Maxim Borisovitch Sychev
  • Filter parameter signaling in video picture headers
    Patent number: 11997318
    Abstract: Methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example video processing method includes performing a conversion between a video picture of a video and a bitstream of the video. A first syntax element in a first video unit level specifying a deblocking parameter offset for ? divided by 2 applied to a chroma component for one or more slices in a first video unit and a second syntax element in the first video unit level specifying a deblocking parameter offset for tC divided by 2 applied to the chroma component for the one or more slices in the first video unit are determined according to a rule in response to the first syntax element and the second syntax element not included in the bitstream.
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: May 28, 2024
    Assignee: Bytdance Inc.
    Inventors: Ye-kui Wang, Jizheng Xu
  • Subpicture sub-bitstream extraction process enhancements
    Patent number: 11997294
    Abstract: A method of video data processing includes performing a conversion between a video and a bitstream of the video. The bitstream comprises multiple layers comprising one or more subpictures according to a rule which specifies that, during a subpicture sub-bitstream extraction process by which an output bitstream is extracted from the bitstream, a supplemental enhancement information network abstraction layer unit, SEI NAL unit, that includes a scalable nested SEI message that is not applicable to the output bitstream is omitted in the output bitstream.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: May 28, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Reference picture management in video coding
    Patent number: 11997257
    Abstract: A method of decoding a coded video bitstream. The method includes obtaining a first reference picture list of a current slice represented in the coded video bitstream and a second reference picture list of the current slice, and marking a status of a reference picture in a decoded picture buffer (DPB) based on the first reference picture list and the second reference picture list when the current slice is a first slice in a current picture to which the current slice belongs. The status of the reference picture in the decoded picture buffer is used for short-term reference, used for long-term reference, or unused for reference. The method also includes using the reference picture in a reconstructing process of the current picture or a picture following the current picture when the status of the reference picture is used for short-term reference or used for long-term reference.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: May 28, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fnu Hendry, Ye-Kui Wang
  • Sub-Picture Motion Vectors In Video Coding
    Publication number: 20240171738
    Abstract: A video coding mechanism includes receiving a bitstream comprising a current picture including a sub-picture coded according to inter-prediction. Coded blocks contain candidate motion vectors for a current block of the sub-picture. The coded blocks include a collocated block from a different picture. A candidate list of candidate motion vectors for the current block are derived by excluding collocated motion vectors from the candidate list when the collocated motion vectors are included in the collocated block, when the collocated motion vectors point outside of the sub-picture, and when a flag is set to indicate the sub-picture is treated as a picture. A current motion vector for the current block is determined from the candidate list of candidate motion vectors. The current block is decoded based on the current motion vector. The current block is forwarded for display as part of a decoded video sequence.
    Type: Application
    Filed: November 27, 2023
    Publication date: May 23, 2024
    Inventors: Ye-Kui Wang, Jianle Chen, FNU Hendry
  • Palette mode with local dual tree modetype definition
    Patent number: 11991397
    Abstract: Methods, systems and apparatus for video processing are described. One example video processing method includes performing a conversion between a video comprising a video block and a bitstream of the video according to a rule, wherein the video block is a coding tree node that includes one or more coding units, and wherein the rule specifies that a coded information of the video block is indicative of whether a coding mode is enabled for the one or more coding units of the video block.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: May 21, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Ye-kui Wang, Li Zhang, Kai Zhang
  • Subpicture information signaling in video bitstreams
    Patent number: 11991352
    Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video including a video picture that includes one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule specifying that a first syntax element indicating whether an operation is performed across a boundary of a subpicture in the coded layer video sequence is selectively included responsive to a number of subpictures in the video picture.
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: May 21, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Li Zhang, Kai Zhang, Ye-kui Wang, Kui Fan
  • Reference picture management in video coding
    Patent number: 11991349
    Abstract: A method of decoding a coded video bitstream includes obtaining a reference picture list structure for a current slice represented in the coded video bitstream, wherein the reference picture list structure contains a number of entries; obtaining a default number of active entries in a reference picture list for the current slice; constructing a reference picture list for the current slice, the reference picture list containing a number of active and inactive entries; setting the number of active entries in the reference picture list equal to the number of entries in the reference picture list structure when the default number of active entries in the reference picture list is greater than the number of entries in the reference picture list structure; and obtaining, based on at least one active entry of the reference picture list, at least one reconstructed block of the current slice.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: May 21, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: F N U Hendry, Ye-Kui Wang
  • Signaling for general constraint information in video coding
    Patent number: 11991396
    Abstract: Methods, systems, apparatus for video processing are described. The processing may include encoding, decoding or transcoding. One example video processing method includes performing a conversion between a video including one or more pictures and a bitstream of the video according to a format rule. The format rule specifies to include, in a general constrain syntax structure, a syntax element indicating whether each picture includes only one slice, and whether a picture header syntax structure is present in a slice header.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: May 21, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Ye-kui Wang, Li Zhang, Kai Zhang, Kui Fan
  • Gradual Decoding Refresh In Video Coding
    Publication number: 20240163425
    Abstract: A method of decoding a coded video bitstream implemented by a video decoder is provided. The method includes the video decoder determining whether a gradual decoding refresh (GDR) picture in the coded video bitstream is an initial picture in decoding order or the initial picture following an end of sequence (EOS) network abstraction layer (NAL) unit in the decoding order; setting a flag to a value to prevent the GDR picture from being output when the GDR picture is the initial picture in decoding order or the initial picture following the EOS NAL unit in the decoding order; decoding the GDR picture; and storing the GDR picture in a decoded picture buffer (DPB).
    Type: Application
    Filed: November 16, 2023
    Publication date: May 16, 2024
    Inventors: FNU Hendry, Ye-Kui Wang, Jianle Chen
  • INTERLACED VIDEO CODING WITH LEADING PICTURES
    Publication number: 20240163467
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a flag and a plurality of coded pictures including an intra random access point (IRAP) picture and one or more non-leading pictures associated with the IRAP picture. When the flag is set to a first value any leading pictures associated with the IRAP picture precede, in decoding order, all non-leading pictures associated with the IRAP picture. When the flag is set to a second value a non-leading picture precedes, in decoding order, an initial leading picture associated with the IRAP picture. The IRAP picture, any leading pictures associated with the IRAP picture, and the one or more non-leading pictures associated with the IRAP picture are decoded in decoding order based on the flag.
    Type: Application
    Filed: January 22, 2024
    Publication date: May 16, 2024
    Inventors: FNU Hendry, Ye-Kui Wang
  • Signalling of the presence of inter-layer reference pictures
    Patent number: 11985357
    Abstract: Methods, devices and systems for video coding and encoding, which include constraints, restrictions and signaling for subpictures, slices, and tiles, are described. One example method of video processing includes performing a conversion between a video including one or more pictures and a bitstream of the video, wherein the bitstream conforms to a format rule, wherein the format rule conditionally allows coding of a picture in one layer using reference pictures from other layers based on a first syntax element indicating whether the reference pictures from the other layers are present in the bitstream, and wherein the first syntax element is conditionally signaled in the bitstream based on a second syntax element that indicates whether an identifier of a parameter set associated with the picture is not equal to zero.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: May 14, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Ye-kui Wang, Li Zhang, Kai Zhang
  • Indicating which video data units represent a target picture-in-picture region
    Patent number: 11985333
    Abstract: A method of processing media data. The method includes determining, for a conversion between a media data and a media data file, that a preselection element includes an indicator, wherein the indicator indicates which video data units of a main video represent a target picture-in-picture region; and performing the conversion between the media data and the media data file based on the indicator. A corresponding video coding apparatus and non-transitory computer-readable recording medium are also disclosed.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: May 14, 2024
    Inventor: Ye-Kui Wang
  • Reference picture management in video coding
    Patent number: 11979553
    Abstract: A method of decoding a coded video bitstream is provided. The method includes parsing a parameter set represented in the coded video bitstream. The parameter set contains a set of syntax elements that include a set of reference picture list structures. The method also includes parsing a slice header of a current slice represented in the coded video bitstream. The slice header contains an index of a reference picture list structure among the set of reference picture list structures in the parameter set. The method further includes deriving, based on the set of syntax elements in the parameter set and the index of the reference picture list structure, a reference picture list of the current slice. The method also includes obtaining, based on the reference picture list, at least one reconstructed block of the current slice.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: May 7, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, FNU Hendry
  • Intra random access points for picture coding
    Patent number: 11979561
    Abstract: A video processing method includes performing a conversion between a video having one or more video layers including one or more video pictures and a bitstream of the video according to a format rule. The format rule specifies that a first video picture is an associated intra random access point picture of a second picture and that the second picture are constrained to belong to a same video layer.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: May 7, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Attribute layers and signaling in point cloud coding
    Patent number: 11979605
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a plurality of coded sequences of point cloud coding (PCC) frames. The plurality of coded sequences of PCC frames represent a plurality of PCC attributes including geometry, texture, and one or more of reflectance, transparency, and normal. Each coded PCC frame is represented by one or more PCC network abstraction layer (NAL) units. The mechanism also includes parsing the bitstream to obtain, for each PCC attribute, an indication of one of a plurality of video codecs used to code the corresponding PCC attribute. The mechanism also includes decoding the bitstream based on the indicated video codecs for the PCC attributes.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: May 7, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, Fnu Hendry, Vladyslav Zakharchenko
  • High Level Control Of Filtering In Video Coding
    Publication number: 20240146971
    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video picture of a video comprising one or more slices and a bitstream of the video picture according to a rule. The rule specifies that that whether a first syntax element indicating a usage of a coding tool is present at a first level is based on a syntax flag indicating whether a syntax structure of a second level is not present at the first level, wherein the second level is higher than the first level, and wherein the second level is the video picture level or higher than the video picture level.
    Type: Application
    Filed: May 19, 2023
    Publication date: May 2, 2024
    Inventors: Li Zhang, Ye-kui Wang
  • ADAPTIVE LOOP FILTERING
    Publication number: 20240146973
    Abstract: Methods, systems and apparatus for video processing are described. One example video processing method includes performing a conversion between a video including a video region and a bitstream of the video according to a rule, wherein the rule specifies that an adaptive loop filtering operation is allowed for the video region in response to an absence of one or more adaptation parameter set (APS) network abstraction layer (NAL) units that include adaptive loop filtering data.
    Type: Application
    Filed: December 1, 2023
    Publication date: May 2, 2024
    Inventors: Zhipin DENG, Ye-Kui WANG, Li ZHANG, Kai ZHANG