公开(公告)号：US20240406406A1

公开(公告)日：2024-12-05

申请号：US18799312

申请日：2024-08-09

Applicant: InterDigital VC Holdings, Inc.

Inventor： Jiancong Luo ,  Xiaoyu Xiu ,  Yuwen He ,  Hua Yang

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513

Abstract: Bi-directional optical flow (BDOF) may be bypassed, for a current coding block, based on whether symmetric motion vector difference (SMVD) is used in motion vector coding for the current coding block. A coding device (e.g., an encoder or a decoder) may determine whether to bypass BDOF for the current coding block based at least in part on an SMVD indication for the current coding block. The coding device may obtain the SMVD indication that indicates whether SMVD is used in motion vector coding for the current coding block. If SMVD indication indicates that SMVD is used in the motion vector coding for the current coding block, the coding device may bypass BDOF for the current coding block. The coding device may reconstruct the current coding block without performing BDOF if it determines to bypass BDOF for the current coding block.

公开(公告)号：US12200190B2

公开(公告)日：2025-01-14

申请号：US17763024

申请日：2020-09-23

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Wei Chen ,  Yuwen He ,  Hua Yang

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

Abstract: An apparatus may be configured to determine a reference picture listed in a first reference picture list and a reference picture listed in a second reference picture list, for a coding block. The apparatus may be configured to determine whether to perform bi-directional optical flow (BDOF) for the coding block based at least in part on whether a distance between a picture associated with the coding block and the reference picture listed in the first reference picture list differs from a distance between the picture associated with the coding block and the reference picture listed in the second reference picture list. The apparatus may be configured to decode the coding block based on the determination of whether to perform BDOF for the coding block.

公开(公告)号：US20250126259A1

公开(公告)日：2025-04-17

申请号：US18999088

申请日：2024-12-23

Applicant: InterDigital VC Holdings, Inc.

Inventor： Rahul Vanam ,  Hua Yang ,  Yuwen He

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61

Abstract: Intra sub-partitions (ISP) may be enabled for a current block, for example, based on an ISP indication. The block may be partitioned into multiple sub-partitions, and a sub-partition may belong to a prediction unit (PU). A sub-partition width for the current block and a minimum prediction block width may be obtained. A PU corresponding to a current sub-partition may be determined based on the sub-partition width and the minimum prediction block width. For example, when the sub-partition width is less than the minimum prediction block width, the PU may include multiple sub-partitions. In examples, the minimum prediction block width may be four samples. Reference samples may be determined, and the PU may be predicted using the reference samples.

公开(公告)号：US20250055995A1

公开(公告)日：2025-02-13

申请号：US18927182

申请日：2024-10-25

Applicant: InterDigital VC Holdings, Inc.

Inventor： Hua Yang ,  Yuwen He ,  Wei Chen

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: Systems, methods, and instrumentalities may be used for decoding and/or encoding a coding unit (CU). An intra-prediction mode for a CU may be determined. A split mode may be determined based on the intra-prediction mode, to generate a plurality of sub-partitions in the CU. A prediction for a first sub-partition of the plurality of sub-partitions in the CU may be based on a reference sample in a second sub-partition of the plurality of sub-partitions in the CU. The CU may be decoded and/or encoded, for example, based on the determined split mode.