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).

  • Signalling of weights of a reference picture list
    Patent number: 11917183
    Abstract: A method includes performing a conversion, according to a rule, between a current slice of a current picture of a video and a bitstream of the video, wherein the rule specifies that a first syntax element of a picture parameter set (PPS) and a second syntax element of the PPS control whether a third syntax element is included in the bitstream, and wherein the first syntax element indicates whether a weighted prediction is enabled for bi-directional slices of coded pictures referring to the PPS, the second syntax element indicates whether information related to the weighted prediction is present in picture headers or slice headers of coded pictures referring to the PPS, and the third syntax element indicates a number of weights associated with a reference picture list 1 of the current slice.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: February 27, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Ye-kui Wang, Li Zhang
  • Video coding bitstream extraction with identifier signaling
    Patent number: 11917207
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving an extracted bitstream that is a result of a sub-bitstream extraction process from an input bitstream containing a set of sub-pictures. The extracted bitstream contains only a subset of the sub-pictures of the input bitstream to the sub-bitstream extraction process. A flag from the extracted bitstream is set to indicate that sub-picture information related to the subset of the sub-pictures is present in the extracted bitstream. One or more sub-picture identifiers (IDs) for the subset of the sub-pictures are obtained based on the flag. The subset of the sub-pictures is decoded based on the sub-picture IDs.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, FNU Hendry
  • Signaling of slice and tile picture partitions
    Patent number: 11917211
    Abstract: Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video including a video picture including a video tile including one or more slices and a bitstream of the video according to a rule. The rule specifies that a second slice in a tile that includes a first slice in a picture has a height that is represented in a unit of coding tree units. The first slice has a first slice index, and the second slice has a second slice index that is determined based on the first slice index and a number of explicitly provided slice heights in the video tile. The height of the second slice is determined based on the first slice index and the second slice index.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: February 27, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Ye-Kui Wang, Zhipin Deng, Kui Fan, Jizheng Xu, Hongbin Liu
  • Gradual decoding refresh in video coding
    Patent number: 11917134
    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 value for a first flag is provided by an external input; setting a first flag equal to the value provided by the external input and a second flag equal to the value of the first flag to prevent a gradual decoding refresh (GDR) picture from being output when the value for the first flag is provided by the external input; decoding the GDR picture; and storing the GDR picture in a decoded picture buffer (DPB).
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fnu Hendry, Ye-Kui Wang, Jianle Chen
  • Palette mode for local dual tree
    Patent number: 11917169
    Abstract: Video processing methods, systems and apparatus are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video using a palette mode in which samples of the video block are represented using a palette of representative color values. A size of the palette of the video block is determined based on whether a local dual tree is applied for the conversion.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: February 27, 2024
    Assignees: BEIJING BYTEDANCE NEWTORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Jizheng Xu, Li Zhang, Ye-kui Wang, Kai Zhang, Weijia Zhu, Yue Wang, Yang Wang, Hongbin Liu
  • Sub-picture sizing in video coding
    Patent number: 11917173
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising one or more sub-pictures partitioned from a picture such that each sub-picture includes a sub-picture width that is an integer multiple of a coding tree unit (CTU) size when the each sub-picture includes a right boundary that does not coincide with a right boundary of the picture. The bitstream is parsed to obtain the one or more sub-pictures. The one or more sub-pictures are decoded to create a video sequence. The video sequence is forwarded for display.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, FNU Hendry
  • Error mitigation in sub-picture bitstream based viewpoint dependent video coding
    Patent number: 11917130
    Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes receiving a spherical video signal stitched from multiple directional video streams. The spherical video signal is mapped into a plurality of sub-picture video signals each containing a sequence of sub-pictures. The plurality of sub-picture video signals, are encoded as a plurality of sub-picture bitstreams, such that, when decoded at a decoder, a value of each sample in each sub-picture is identical to a value of a corresponding sample in a decoded entire picture composed from the sub-pictures. The plurality of sub-picture bitstreams are composed into a plurality of sub-picture tracks with an indication that the sub-picture tracks are conforming to a particular video profile. The sub-picture bitstreams are transmitted toward a decoder to support decoding and displaying virtual reality video viewport.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, Huameng Fang, Yuqun Fan, Jianle Chen
  • Subpicture level information signaling in video coding
    Patent number: 11917184
    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 including one or more subpictures and a bitstream of the video according to a format rule, wherein the format rule specifies that a first syntax element in a scalable nesting supplemental enhancement information message in the bitstream is set to a particular value in response to the scalable nesting supplemental enhancement information message including one or more subpicture level information supplemental enhancement information messages, and wherein the particular value of the first syntax element indicates that the scalable nesting supplemental enhancement information message includes one or more scalable-nested supplemental enhancement information messages that apply to a specific output video layer set.
    Type: Grant
    Filed: December 7, 2022
    Date of Patent: February 27, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Hypothetical reference decoder for V-PCC
    Patent number: 11917182
    Abstract: A video coding mechanism is disclosed. The mechanism includes encoding a sequence of point cloud compression (PCC) components into a bitstream. A buffering period supplemental enhancement information (SEI) message is also encoded into the bitstream. A hypothetical reference decoder (HRD) is initialized at a coded atlas access unit (AU) associated with the buffering period SEI message. A HRD conformance check of the bitstream is performed starting at the coded atlas AU. The bitstream is stored for communication toward a decoder.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, Jianle Chen, Fnu Hendry
  • Flexible Tiling in Video Coding
    Publication number: 20240064313
    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. Each second level tile contains a single rectangular slice of picture data. The first level tiles and the second level tiles are encoded into a bitstream. The bitstream is stored for communication toward a decoder.
    Type: Application
    Filed: August 30, 2023
    Publication date: February 22, 2024
    Inventors: Ye-Kui Wang, FNU Hendry, Maxim Borisovitch Sychev
  • Ordering of NAL units in coded video
    Patent number: 11909996
    Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video and a bitstream of the video. The bitstream includes one or more layers including one or more network abstraction layer (NAL) units according to a format rule that specifies that a first layer identifier in a header of an end of sequence network abstraction layer (EOS NAL) unit is required to be equal to a second layer identifier of one of the one or more layers in the bitstream.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: February 20, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Indication of end of sequence in coded video
    Patent number: 11909995
    Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video and a bitstream of the video. The bitstream conforms to a format rule. The bitstream includes one or more layers including one or more picture units (PUs). The format rule specifies that, responsive to a first PU in a layer of the bitstream following an end of sequence network abstraction layer (EOS NAL) unit in the layer in a decoding order, a variable of the first PU is set to a particular value, wherein the variable indicates whether the first PU is a coded layer video sequence start (CLVSS) PU.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: February 20, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Decoded picture buffer memory allocation and picture output in scalable video coding
    Patent number: 11910022
    Abstract: Methods and apparatus for video processing, including coding and decoding, are described. One example video processing method includes performing a conversion between a video having one or more video layers and a bitstream of the video according to a format rule, and wherein the format rule specifies that a value of a flag that indicates whether to remove pictures previously decoded and stored in a decoded picture buffer from the decoded picture buffer when decoding an access unit of a certain type is included in the bitstream.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: February 20, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Slice type in video coding
    Patent number: 11902557
    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 including one or more pictures including one or more slices and a coded representation of the video, wherein the coded representation conforms to a format rule that specifies that a condition of a field in the coded representation controls a constraint on a slice type or whether the slice type is included in the coded representation for a video slice, wherein the field includes a general constraint flag, a network abstraction layer unit type or whether the video slice is in a first video picture of an access unit.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: February 13, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Ye-kui Wang, Li Zhang
  • Decoder configuration record in coded video
    Patent number: 11902552
    Abstract: Systems, methods and apparatus for encoding or decoding a file format that stores one or more images are described. One example method includes performing a conversion between a visual media file and a bitstream of a visual media data according to a format rule, wherein the format rule specifies a characteristic of a syntax element in the visual media file, wherein the syntax element has a value that is indicative of a number of bytes used for indicating a constraint information associated with the bitstream.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: February 13, 2024
    Assignee: Lemon Inc.
    Inventor: Ye-Kui Wang
  • Conformance window parameters in video coding
    Patent number: 11902558
    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 comprising a picture in a video unit and a bitstream of the video according to a format rule. The format rule specifies that, responsive to a width of a picture being equal to a maximum allowed picture width in the video unit and a height of the picture being equal to a maximum allowed picture height in the video unit, a conformance window flag in a picture parameter set corresponding to the picture is set to a zero value.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: February 13, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Ye-Kui Wang, Li Zhang
  • Associating file format objects and dynamic adaptive streaming over hypertext transfer protocol (DASH) objects
    Patent number: 11902634
    Abstract: A method comprises obtaining media content associated with a first viewpoint and a second viewpoint, wherein a first position of the first viewpoint is static and a second position of the second viewpoint is dynamic; generating a first VWPT descriptor based on the media content and describing the first viewpoint; generating a second VWPT descriptor based on the media content and describing the second viewpoint; generating an MPD comprising the first VWPT descriptor and the second VWPT descriptor; and transmitting the MPD.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: February 13, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, Yuqun Fan, Peiyun Di
  • Using quantization groups in video coding
    Patent number: 11902518
    Abstract: An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: February 13, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Weijia Zhu, Li Zhang, Jizheng Xu, Kai Zhang, Ye-kui Wang
  • Profile tier level parameter set in video coding
    Patent number: 11902586
    Abstract: Devices, systems and methods for specifying the syntax and semantics of the decoding parameter set (DPS) are described. One example method of video processing includes determining, for a conversion between a video and a bitstream of the video, that each output layer set (OLS) in a coded video sequence (CVS) in the bitstream conforms to at least one profile-tier-level (PTL) syntax structure included in a data structure associated with decoding parameter semantics in the bitstream, and performing, based on the determining, the conversion, wherein the PTL syntax structure indicates a profile, a tier, and a level of the bitstream.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: February 13, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • MINIMIZING INITIALIZATION DELAY IN LIVE STREAMING
    Publication number: 20240048798
    Abstract: A method for processing media data includes identifying in a media presentation description (MPD) an indication of a Tuning-In Media Segment. The Tuning-In Media Segment comprises a latest media data for a client device to start with when tuning into an ongoing live streaming service. The latest media data is selected from either a current media segment that is being generated by the ongoing live streaming service or a previous media segment generated by the ongoing live streaming service based on a length of the current media segment. The MPD is stored by the client device prior to the client device tuning into the ongoing live streaming service. The method further includes performing a conversion between a visual media data and a bitstream according to the MPD.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 8, 2024
    Inventors: Yongyi Yu, Le Yang, Jianping Chen, Ye-Kui Wang