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    METHODS AND DEVICES FOR CONTEXT SET SELECTION
    2.
    发明公开
    METHODS AND DEVICES FOR CONTEXT SET SELECTION 审中-公开

    公开(公告)号：US20230396771A1

    公开(公告)日：2023-12-07

    申请号：US18451048

    申请日：2023-08-16

    申请人： Velos Media, LLC

    发明人： Tianying JI ,  Nguyen NGUYEN ,  Dake HE

    IPC分类号： H04N19/129 ,  H04N19/176 ,  H04N19/51 ,  H04N19/184 ,  H04N19/186 ,  H04N19/60

    CPC分类号： H04N19/129 ,  H04N19/176 ,  H04N19/51 ,  H04N19/184 ,  H04N19/186 ,  H04N19/60 ,  H04N19/593

    摘要： Methods of encoding and decoding for video data are described for encoding or decoding multi-level significance maps. Distinct context sets may be used for encoding the significant-coefficient flags in different regions of the transform unit. In a fixed case, the regions are defined by coefficient group borders. In one example, the upper-left coefficient group is a first region and the other coefficient groups are a second region. In a dynamic case, the regions are defined by coefficient group borders, but the encoder and decoder dynamically determine in which region each coefficient group belongs. Coefficient groups may be assigned to one region or another based on, for example, whether their respective significant-coefficient-group flags were inferred or not.

    Method and device for encoding and decoding a video bitstream using a selected motion vector
    8.
    发明授权
    Method and device for encoding and decoding a video bitstream using a selected motion vector 有权

    公开(公告)号：US11350129B2

    公开(公告)日：2022-05-31

    申请号：US17013779

    申请日：2020-09-07

    申请人： Velos Media, LLC

    发明人： Christopher A. Segall

    IPC分类号： H04N19/61 ,  H04N19/513

    摘要： A method for decoding video includes creating a first list of motion vectors from at least one neighboring block in a current frame of the video and creating a second list of motion vectors from at least one previous block in a temporally earlier frame of the video. A third list of motion vectors is created based upon the first list and the second list. Based upon receiving a motion vector competition control parameter selecting one of the motion vectors from the third list, wherein the second list of motion vectors is further based upon a flooring function.

    IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD
    9.
    发明申请
    IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD 有权

    公开(公告)号：US20220078426A1

    公开(公告)日：2022-03-10

    申请号：US17526529

    申请日：2021-11-15

    申请人： Velos Media, LLC

    发明人： Junichi TANAKA

    IPC分类号： H04N19/124 ,  H04N19/70 ,  H04N19/463 ,  H04N19/174 ,  H04N19/103 ,  H04N19/126 ,  H04N19/157 ,  H04N19/31 ,  H04N19/50 ,  H04N19/44

    摘要： An image processing device including an acquiring section configured to acquire quantization matrix parameters from an encoded stream in which the quantization matrix parameters defining a quantization matrix are set within a parameter set which is different from a sequence parameter set and a picture parameter set, a setting section configured to set, based on the quantization matrix parameters acquired by the acquiring section, a quantization matrix which is used when inversely quantizing data decoded from the encoded stream, and an inverse quantization section configured to inversely quantize the data decoded from the encoded stream using the quantization matrix set by the setting section.