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公开(公告)号：WO2023072216A1
公开(公告)日：2023-05-04
申请号：PCT/CN2022/128059
申请日：2022-10-27
Inventor： DENG, Zhipin , ZHANG, Kai , ZHANG, Li
IPC: H04N19/169 , H04N19/50 , H04N19/43
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, a first prediction of the target video block by using an inter prediction tool; determining a second prediction by performing a motion compensation process on the first prediction; obtaining a third prediction by performing a forward mapping process on the second prediction; and performing the conversion based on the third prediction. In this way, the prediction of the target video block can be improved by applying the motion compensation process, and thus the coding effectiveness and coding efficiency can be improved.
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公开(公告)号：WO2023057848A1
公开(公告)日：2023-04-13
申请号：PCT/IB2022/058973
申请日：2022-09-22
Applicant: SONY GROUP CORPORATION
Inventor： ZAGHETTO, Alexandre , TABATABAI, Ali , GRAZIOSI, Danillo
IPC: H04N19/96 , H04N19/147 , H04N19/176 , H04N19/103 , H04N19/50 , H04N19/597 , H04N19/129 , H04N19/157
Abstract: An electronic device and method for adaptive mode selection for point cloud compression, is provided. The electronic device receives a 3D point cloud geometry and partitions the 3D point cloud geometry into a set of 3D blocks. For a 3D block of the set of 3D blocks, mode decision information is determined. The mode decision information includes class information of the 3D point cloud geometry, operational conditions associated with an encoding stage of the 3D point cloud geometry, or mode-related information associated with one or more 3D blocks of the set of 3D blocks. Based on the mode decision information, one or more modes are selected for the 3D block from a plurality of modes. Each mode corresponds to a function that is used to encode the 3D block. The 3D block is encoded based on the one or more modes.
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公开(公告)号：WO2023016351A1
公开(公告)日：2023-02-16
申请号：PCT/CN2022/110366
申请日：2022-08-04
Inventor： HUANG, Yan , XU, Jizheng , ZHANG, Li , SONG, Li
IPC: H04N19/00 , H04N19/50 , H04N19/503
Abstract: A method for video processing is proposed. The method (1100) comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, an adjusted coding process for the target video block based at least in part on a budget of coding time for at least one further video block and an actual coding time for the at least one further video block (1102), the at least one further video block being coded before the conversion, the coding time representing a time duration during which the at least one further video block being coded, the budget of coding time representing a time duration being pre-allocated for encoding the at least one further video block; and performing the conversion by using the adjusted coding process (1104).
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公开(公告)号：WO2023277957A1
公开(公告)日：2023-01-05
申请号：PCT/US2022/013314
申请日：2022-01-21
Applicant: TENCENT AMERICA LLC
Inventor： ZHAO, Liang , ZHAO, Xin , LIU, Shan
IPC: H04N19/103 , H04N19/105 , H04N19/11 , H04N19/169 , H04N19/50 , H04N19/33
Abstract: Methods, apparatus, and computer readable storage medium for intra bi-prediction and multiple reference line intra prediction in video decoding. The method includes receiving, by a device, a coded video bitstream for a block. The method also includes determining, by the device, whether a single directional intra prediction or an intra bi-prediction applies to the block, based on mode information of the block, the mode information of the block comprising at least one of: a reference line index of the block, an intra prediction mode of the block, and a size of the block; in response to determining that the single directional intra prediction applies to the block, performing, by the device, the single directional intra prediction to the block; and in response to determining that the intra bi-prediction applies to the block, performing, by the device, the intra bi-prediction to the block.
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公开(公告)号：WO2023277804A2
公开(公告)日：2023-01-05
申请号：PCT/SG2022/050432
申请日：2022-06-24
Applicant: ALIBABA SINGAPORE HOLDING PRIVATE LIMITED
Inventor： LI, Xinwei , LIAO, Ruling , CHEN, Jie , YE, Yan
IPC: H04N19/103 , H04N19/176 , H04N19/50 , H04N19/105 , H04N19/119 , H04N19/154 , H04N19/159 , H04N19/46
Abstract: A method for performing combined inter and intra prediction (CIIP) includes determining the CIIP being enabled for a target block; determining a first intra prediction mode of the target block using a template-based intra mode derivation (TIMD) method; generating an intra predictor of the target block with the first intra prediction mode; and obtaining a final predictor of the target block by weighted averaging the intra predictor of the target block and aninter predictor of the target block.
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Patent Agency Ranking
公开(公告)号：WO2023274372A1
公开(公告)日：2023-01-05
申请号：PCT/CN2022/102956
申请日：2022-06-30
Inventor： WANG, Yang , ZHANG, Li , ZHANG, Kai , DENG, Zhipin
Abstract: Embodiments of the present disclosure provide a method for video processing. The method comprises: determining, during a conversion between a current video block of a video and a bitstream of the video, at least one target intra prediction mode for the current video block based on neighboring reconstructed samples of the current video block; determining a prediction or a reconstruction of the current video block based on a combination of the at least one target intra prediction mode and one of an inter coding tool or a candidate coding tool, the candidate coding tool being used for determining a reference block for the current video block with samples in a current picture associated with the current video block; and performing the conversion based on the prediction or the reconstruction of the current video. Compare with conventional solutions, the proposed method can advantageously improve coding efficiency and coding quality.
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公开(公告)号：WO2022257954A1
公开(公告)日：2022-12-15
申请号：PCT/CN2022/097559
申请日：2022-06-08
Inventor： WANG, Yang , ZHANG, Li , HE, Yuwen , ZHANG, Kai
IPC: H04N19/103 , H04N19/50 , H04N19/00
Abstract: Embodiments of the present disclosure provide a solution for video processing is proposed. A method for video processing is proposed. The method comprises: determining, during a con-version between a video unit and a bitstream of the video unit, whether an optical flow based coding method is applied to the video unit based on illuminance information associated with at least one of: the video unit or a reference video unit of the video unit; and performing the conversion based on the determination. Compared with the conventional solution, the pro-posed method can advantageously improve the coding efficiency and performance.
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公开(公告)号：WO2022166969A1
公开(公告)日：2022-08-11
申请号：PCT/CN2022/075412
申请日：2022-02-07
Applicant: 荣耀终端有限公司
Abstract: 本发明公开了一种基于二维规则化平面投影的点云序列编解码方法及装置，所述编码方法包括：获取参考帧点云数据和当前帧点云数据；对参考帧点云数据进行二维规则化平面投影，得到第一二维投影平面结构；同时对当前帧点云数据进行二维规则化平面投影，得到第二二维投影平面结构；基于第一二维投影平面结构得到的若干第一二维图信息和第二二维投影平面结构得到的若干第二二维图信息进行运动补偿，并进行编码，得到当前帧点云数据的码流信息；重复上述步骤，直至完成点云序列所有帧的编码。本发明能够极大地利用点云序列在时域和空域上的相关性进行点云序列的编码，减小了点云序列的时域和空域冗余，提升了编码效率。
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公开(公告)号：WO2022166968A1
公开(公告)日：2022-08-11
申请号：PCT/CN2022/075410
申请日：2022-02-07
Applicant: 荣耀终端有限公司
Abstract: 本发明公开了一种基于二维规则化平面投影的点云编解码方法及装置，编码方法包括：获取原始点云数据；对原始点云数据进行二维规则化平面投影，得到二维投影平面结构；根据二维投影平面结构得到若干二维图信息；对若干二维图信息进行编码，得到码流信息。本发明通过二维规则化平面投影技术得到点云在二维投影平面结构上的强相关性表示，从而更好的体现了点云的空间相关性，使得后续在对二维规则化投影平面结构所得到的坐标转换误差信息图进行编码时，能够极大地利用点云的空间相关性，提升点云了的编码效率；同时在对坐标转换误差信息图进行编码时，利用了占位信息图、深度信息图和投影残差信息图进行辅助，进一步提升了编码效率。
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公开(公告)号：WO2021252093A1
公开(公告)日：2021-12-16
申请号：PCT/US2021/029648
申请日：2021-04-28
Applicant: TENCENT AMERICA LLC
Inventor： XU, Xiaozhong , LIU, Shan
IPC: H04N19/583 , H04N19/82 , H04N19/105 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/50 , H04N19/593
Abstract: A method, computer program, and computer system is provided for coding video data. Video data including one or more blocks is received. A current block coded in intra block copy mode or string matching mode is predicted from among the one or more blocks based on a coded block vector or a string offset vector corresponding to one or more spatial neighboring or non-neighboring blocks from among the one or more blocks. The video data, is decoded based on the predicted current block.
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