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363 条记录 (耗时 0.023 秒)

    Method and apparatus of video coding using bi-directional CU weight
    4.
    发明授权
    Method and apparatus of video coding using bi-directional CU weight 有权

    公开(公告)号：US11895291B2

    公开(公告)日：2024-02-06

    申请号：US17056111

    申请日：2019-05-23

    申请人： MEDIATEK INC.

    发明人： Yu-Chi Su ,  Ching-Yeh Chen ,  Zhi-Yi Lin ,  Tzu-Der Chuang

    IPC分类号： H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51

    CPC分类号： H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51

    摘要： A method and apparatus of encoding or decoding for a coding system, where bi-directional CU (coding unit) weighting (BCW) is enabled for the coding system to allow using multiple pairs of weights, are disclosed. According to this method, a Merge candidate list is generated for the current block, where current bi-directional CU weights for a bi-directional predictor of the current block associated with a target Merge candidate in the Merge candidate list are set to a pre-define pair of weights when the target Merge candidate corresponds to a selected Merge candidate. In another method, current bi-directional CU weights for a bi-directional predictor associated with a target Merge candidate in the Merge candidate list are inherited from the target Merge candidate when the target Merge candidate corresponds to a selected Merge candidate.

    Method and apparatus for video coding with constraints on reference picture lists of a RADL picture
    5.
    发明授权
    Method and apparatus for video coding with constraints on reference picture lists of a RADL picture 有权

    公开(公告)号：US11882270B2

    公开(公告)日：2024-01-23

    申请号：US17341879

    申请日：2021-06-08

    申请人： MEDIATEK INC.

    发明人： Shih-Ta Hsiang ,  Lulin Chen ,  Chih-Wei Hsu ,  Olena Chubach

    IPC分类号： H04N19/105 ,  H04N19/172 ,  H04N19/46 ,  H04N19/159

    CPC分类号： H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46

    摘要： Method and apparatus for signaling or parsing constrained active entries in reference picture lists for multi-layer coding are disclosed. For the decoder side, when the current picture is a RADL (Random Access Decodable Leading) picture, reference picture list 0 or reference picture list 1 of the current picture is mandatorily required to contain no active entry corresponding to a RASL (Random Access Skipped Leading) picture with pps_mixed_nalu_types_in_pic_flag equal to 0 or a picture that precedes an associated IRAP (Intra Random Access Point) picture in decoding order, and wherein an active entry in the reference picture list 0 or the reference picture list 1 of the RADL picture can refer to a RASL picture with the pps_mixed_nalu_types_in_pic_flag equal to 1 and a referenced RASL picture either belongs to the same layer or a different layer than a layer containing the current picture which is the RADL picture.

    Methods and apparatus for generating affine candidates
    6.
    发明授权
    Methods and apparatus for generating affine candidates 有权

    公开(公告)号：US11863757B2

    公开(公告)日：2024-01-02

    申请号：US17464498

    申请日：2021-09-01

    申请人： HFI Innovation Inc.

    发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Zhi-Yi Lin

    IPC分类号： H04N19/149 ,  H04N19/176 ,  H04N19/105 ,  H04N19/196

    CPC分类号： H04N19/149 ,  H04N19/105 ,  H04N19/176 ,  H04N19/196

    摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to encode or decode video data. A current block of video data is coded using affine prediction. A first set of candidates of a candidate list for the current block is generated, including determining one or more inherited candidates and deriving one or more constructed candidates. After generating the first set of candidates, it is determined whether the candidate list is full. Upon determining the candidate list is not full, the candidate list is filled by generating a second set of candidates of the candidate list, including one or more of generating one or more zero motion vector candidates, generating one or more additional derived candidates based on the plurality of associated neighboring blocks of the current block, and generating a temporal motion vector candidate based on a temporal collocated picture.

    Methods and apparatuses for coding transform blocks
    9.
    发明授权
    Methods and apparatuses for coding transform blocks 有权

    公开(公告)号：US11750841B2

    公开(公告)日：2023-09-05

    申请号：US17973600

    申请日：2022-10-26

    申请人： HFI INNOVATION INC.

    发明人： Shih-Ta Hsiang

    IPC分类号： H04N19/60 ,  H04N19/13 ,  H04N19/176

    CPC分类号： H04N19/60 ,  H04N19/13 ,  H04N19/176

    摘要： Video processing methods and apparatuses in a video encoding or decoding system for processing residual data of transform blocks. A current transform block in a video picture is divided into multiple sub-blocks, and each sub-block in the current transform block is entropy encoded or decoded using multiple sub-block coding passes. Each transform coefficient level in each sub-block is visited once according to a pre-defined scanning order in each sub-block coding pass. Two or more syntax elements associated with transform coefficient levels in the current transform block are aggregated and coded in one single sub-block coding pass. The video processing method is applied if the current transform block contains at least one non-zero transform coefficient level and the current transform block is coded in Transform Skip Mode (TSM) according to some embodiments.

    Method and apparatus for reduction of in-loop filter buffer
    10.
    发明授权
    Method and apparatus for reduction of in-loop filter buffer 有权

    公开(公告)号：US11743458B2

    公开(公告)日：2023-08-29

    申请号：US17286713

    申请日：2019-10-18

    申请人： MEDIATEK INC.

    发明人： Ching-Yeh Chen ,  Tzu-Der Chuang ,  Yu-Chi Su ,  Chih-Wei Hsu ,  Yu-Wen Huang

    IPC分类号： H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80

    CPC分类号： H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80

    摘要： Methods and apparatus for in-loop processing of reconstructed video are disclosed. According to one method, a virtual boundary is determined for to-be-processed pixels in the current picture, where the virtual boundary is aligned with block boundaries and at least one to-be-processed pixel on a first side of the virtual boundary requires one or more second pixels on a second side of the virtual boundary. According to the method, the in-loop processing is modified if a target to-be-processed pixel requires at least one second pixel from the second side of the virtual boundary and the modified in-loop processing eliminates the need for any second pixel on the second side of the virtual boundary. According to another method, the operations of block classification are changed when part of the required pixels in one 10×10 window used in classification are at the other side of virtual boundaries.