中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

1338 records (took 0.026 seconds)

    LOW FREQUENCY NON-SEPARABLE TRANSFORM SIGNALING IN VIDEO CODING
    181.
    发明申请
    LOW FREQUENCY NON-SEPARABLE TRANSFORM SIGNALING IN VIDEO CODING 有权

    公开(公告)号：US20230007253A1

    公开(公告)日：2023-01-05

    申请号：US17901270

    申请日：2022-09-01

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang ,  Li Zhang ,  Kai Zhang

    IPC: H04N19/12 ,  H04N19/176 ,  H04N19/70 ,  H04N19/60 ,  H04N19/18

    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video. The video block uses a low frequency non-separable transform for the conversion. The bitstream conforms to a format rule specifying that a syntax element is included at a syntax level for the bitstream. The syntax element is indicative of whether use of a scaling matrix which is derived from a reference scaling list is enabled for the video block. The syntax level is a sequence level, a picture level, or a slice level.

    Palette mode with different partition structures
    188.
    发明授权
    Palette mode with different partition structures 有权

    公开(公告)号：US11528497B2

    公开(公告)日：2022-12-13

    申请号：US17671486

    申请日：2022-02-14

    Applicant: Bytedance Inc.

    Inventor： Weijia Zhu ,  Jizheng Xu ,  Li Zhang ,  Hsiao Chiang Chuang

    IPC: H04N19/00 ,  H04N19/50 ,  H04N19/119 ,  H04N19/124 ,  H04N19/132 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/169 ,  H04N19/70

    Abstract: Methods, systems, and devices for using palette mode with different partition structures are described. An example method for video processing includes maintaining, for a conversion between a video comprising one or more video regions comprising a current video block and a bitstream representation of the video, a palette prediction table for a prediction of a palette used in a palette mode coding tool used for the current video block, making a determination that a local dual tree coding is applied to the conversion, modifying, based on the determination, the palette prediction table, and performing, based on the palette prediction table subsequent to the modifying, the conversion, wherein the palette mode coding tool represents the current video block using a palette of representative color values, and wherein the local dual tree coding enables partitioning of chroma blocks independently from corresponding luma blocks based on a block size.

    Quantized Residual Differential Pulse Code Modulation Representation Of Coded Video
    189.
    发明申请
    Quantized Residual Differential Pulse Code Modulation Representation Of Coded Video 有权

    公开(公告)号：US20220385916A1

    公开(公告)日：2022-12-01

    申请号：US17881197

    申请日：2022-08-04

    Applicant: Bytedance, Inc.

    Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu ,  Hsiao Chiang Chuang

    IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/11 ,  H04N19/124 ,  H04N19/182 ,  H04N19/593

    Abstract: Video coding and decoding methods are described. An example method includes determining, based on an applicability rule, that a differential coding mode is applicable to a conversion between a chroma video block of a video and a bitstream representation of the chroma video block, and performing, based on the determining, the conversion between the chroma video block and the bitstream representation of the chroma video block using the differential coding mode, where the chroma video block is represented in the bitstream representation using a difference between a quantized residual of an intra prediction of the chroma video block and a prediction of the quantized residual in the differential coding mode, where the intra prediction is performed in a first direction and the prediction of the quantized residual is performed in a second direction, and where the difference is represented using a differential pulse coding modulation (DPCM) representation.

    Implementation aspects in intra block copy in video coding
    190.
    发明授权
    Implementation aspects in intra block copy in video coding 有权

    公开(公告)号：US11516467B2

    公开(公告)日：2022-11-29

    申请号：US17384246

    申请日：2021-07-23

    Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

    Inventor： Jizheng Xu ,  Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

    IPC: H04N19/176 ,  H04N19/423 ,  H04N19/593 ,  H04N19/105

    Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.

Patent Agency Ranking