公开(公告)号：US20200344480A1

公开(公告)日：2020-10-29

申请号：US16923908

申请日：2020-07-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladyslav Zakharchenko ,  Jianle Chen

IPC: H04N19/13 ,  H04N19/46 ,  H04N19/184 ,  H04N19/18 ,  G06F17/18

Abstract: A method comprises obtaining a first weight for a first probability associated with a first probability update window; obtaining a second weight for a second probability associated with a second probability update window, wherein the first weight and the second weight are unequal; and coding, using the first weight and the second weight, a portion of a video.

公开(公告)号：US20250106396A1

公开(公告)日：2025-03-27

申请号：US18972057

申请日：2024-12-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Biao Wang ,  Semih Esenlik ,  Anand Meher Kotra ,  Han Gao ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A method of video coding implemented by a coding device includes obtaining block size information of a current block to be coded in an intra sub-partition (ISP) coding mode, determining a partitioning direction based on the block size information, determining, based on the block size information, a number of sub-partitions to which the current block is to be partitioned in the partitioning direction, wherein the sub-partitions are for intra prediction separately with a width of each of the sub-partitions bigger than or equal to 4 or collaboratively by combining at least two of the sub-partitions with a combined width of the at least two sub-partitions bigger than or equal to 4, and coding the sub-partitions.

公开(公告)号：US12262053B2

公开(公告)日：2025-03-25

申请号：US18544099

申请日：2023-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Jianle Chen ,  Haitao Yang

IPC: H04N19/11 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a video signal partitioned into a chroma block and a first neighboring luma block. The mechanism also includes encoding prediction information for chroma samples of the chroma block into a bitstream. The prediction information for the chroma samples is determined via intra-prediction based on down-sampled neighboring luma samples. The down-sampled neighboring luma samples are generated from a single row of luma samples from the first neighboring luma block. A bitstream including the prediction information for the chroma samples is transmitted to support decoding and display of the chroma samples.

公开(公告)号：US12250376B2

公开(公告)日：2025-03-11

申请号：US18390930

申请日：2023-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  F N U Hendry ,  Jianle Chen

IPC: H04N19/117 ,  H04N19/169 ,  H04N19/174 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a slice and a luma mapping with chroma scaling (LMCS) adaptation parameter set (APS) including LMCS parameters. The mechanism further includes determining that the LMCS APS is referenced in data related to the slice. The mechanism further includes decoding the slice using LMCS parameters from the LMCS APS based on the reference to the LMCS APS. The mechanism further includes forwarding the slice for display as part of a decoded video sequence.

公开(公告)号：US12212747B2

公开(公告)日：2025-01-28

申请号：US18365830

申请日：2023-08-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han Gao ,  Jianle Chen ,  Semih Esenlik ,  Zhijie Zhao ,  Anand Meher Kotra

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/192 ,  H04N19/96

Abstract: A partitioning method comprises determining whether a current block of a picture is a boundary block and whether the size of the current block is larger than a minimum allowed quadtree leaf node size; and if the current block is the boundary block and the size of the current block is not larger than the minimum allowed quadtree leaf node size (MinQTSize), applying forced binary tree (BT) partitioning to the current block. A method comprises making a determination that a current block of a picture is a boundary block and that a size of the current block is less than or equal to a minimum allowed quadtree (QT) leaf node size (MinQTSize); and applying, in response to the determination, forced binary tree (BT) partitioning to the current block.

公开(公告)号：US12206903B2

公开(公告)日：2025-01-21

申请号：US18371593

申请日：2023-09-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin ,  Alexander Alexandrovich Karabutov ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/107 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

Abstract: The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.

公开(公告)号：US12184898B2

公开(公告)日：2024-12-31

申请号：US17714608

申请日：2022-04-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladyslav Zakharchenko ,  Jianle Chen

IPC: H04N19/00 ,  H04N19/136 ,  H04N19/597 ,  H04N19/70

Abstract: A method implemented by a PCC decoder and comprising: receiving, by the PCC decoder, a point cloud bitstream comprising timing_info_present_flag, wherein the timing_info_present_flag specifies whether num_units_in_tick, time_scale, and poc_proportional_to_timing_flag are or are not present in a syntax structure; and decoding, by the PCC decoder using the timing_info_present_flag, the point cloud bitstream to obtain a decoded point cloud bitstream. A method implemented by a PCC decoder and comprising: receiving, by the PCC decoder, a point cloud bitstream comprising num_units_in_tick, wherein num_units_in_tick is a number of time units of a clock operating at a frequency time_scale hertz (Hz) that corresponds to one increment of a clock tick counter; and decoding, by the PCC decoder using the num_units_in_tick, the point cloud bitstream to obtain a decoded point cloud bitstream.

公开(公告)号：US12184842B2

公开(公告)日：2024-12-31

申请号：US18322404

申请日：2023-05-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher Kotra ,  Jianle Chen ,  Semih Esenlik ,  Zhijie Zhao ,  Han Gao ,  Biao Wang ,  Ivan Krasnov

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A coding apparatus configured to select an intra prediction mode for a current block, encode the selected intra prediction mode using truncated binary coding every time the selected intra prediction mode is a remaining mode, and encode the selected intra prediction mode using N bits when the selected intra prediction mode is included in a first portion from remaining modes and using N+1 bits when the selected intra prediction mode is included in a second portion of the remaining modes.

公开(公告)号：US12177486B2

公开(公告)日：2024-12-24

申请号：US17702426

申请日：2022-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/44 ,  H04N19/46

Abstract: A method of decoding is provided. The method includes receiving a video bitstream including a picture unit (PU), where any decoding capability information (DCI) network abstraction layer (NAL) unit, video parameter set (VPS) NAL unit, sequence parameter set (SPS) NAL unit, or picture parameter set (PPS) NAL unit referred to by the PU precedes a picture header (PH) NAL unit of the PU and a first video coding layer (VCL) NAL unit of the PU; and decoding a coded picture from the PU to obtain a decoded picture.

公开(公告)号：US12177469B2

公开(公告)日：2024-12-24

申请号：US18146372

申请日：2022-12-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich Solovyev ,  Semih Esenlik ,  Jianle Chen ,  Anand Meher Kotra ,  Han Gao ,  Biao Wang ,  Roman Igorevich Chernyak ,  Alexander Alexandrovich Karabutov ,  Sergey Yurievich Ikonin

IPC: H04N19/503 ,  H04N19/105 ,  H04N19/13 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A prediction method for an image block comprising a first prediction sub-block and a second prediction sub-block, the prediction method comprising: parsing a first index from a bitstream, wherein the first index is used to obtain prediction information of the first prediction sub-block; parsing a second index from the bitstream; comparing the first index with the second index; adjusting the second index in the event that the second index is equal to or greater than the first index; and obtaining prediction information of the second prediction sub-block according to the adjusted second index.