公开(公告)号：US20240040126A1

公开(公告)日：2024-02-01

申请号：US18483175

申请日：2023-10-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch SYCHEV ,  Timofey Mikhailovich SOLOVYEV ,  Alexander Alexandrovich KARABUTOV ,  Sergey Yurievich IKONIN ,  Jianle CHEN

IPC: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503

CPC classification number: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503

Abstract: The disclosure provides a motion vector compression method, comprising: obtaining a temporal motion vector; determining a compressed motion vector using a binary representation of the temporal motion vector comprising an exponent part and/or a mantissa part, wherein the exponent part comprises N bits, the mantissa part comprises M bits, and wherein N is a non-negative integer and M is a positive integer; and performing a temporal motion vector prediction (TMVP) using the compressed motion vector.

公开(公告)号：US20200382808A1

公开(公告)日：2020-12-03

申请号：US16999939

申请日：2020-08-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruslan Faritovich MULLAKHMETOV ,  Sergey Yurievich IKONIN ,  Maxim Borisovitch SYCHEV

IPC: H04N19/567 ,  H04N19/184

Abstract: The present invention relates to the field of video pictures/images processing. In particular, the present invention relates to a device for decoding video images, and to a device for encoding video images. The invention is especially concerned with reducing the amount of information transmitted from the encoding device to the decoding device. Only absolute values of motion information are transmitted according to the invention from the encoding device to the decoding device. Both the encoding device and the decoding device use the absolute values of the motion information to build motion information candidates of the generated motion information, wherein each motion information candidate results from a different sign combination of the absolute values, calculate a cost for each motion information candidate, and determine a rank of each motion information candidate based on the calculated costs.

公开(公告)号：US20180213251A1

公开(公告)日：2018-07-26

申请号：US15934098

申请日：2018-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sergey Yurievich IKONIN ,  Maxim Borisovitch SYCHEV ,  Victor Alexeevich STEPIN

IPC: H04N19/51 ,  G06T5/00 ,  H04N19/82 ,  H04N19/44 ,  H04N19/117 ,  H04N19/176

Abstract: A video coder for predictive coding a video stream of subsequent frames according to motion compensation into an encoded video bit stream is provided. The video coder comprises a frame configured to store at least one reference frame of the video stream, an inter prediction unit configured to generate a prediction block of a current block of the current frame from a reference block of the reference frame. The prediction block is generated by a motion vector having a fractional-pel resolution, the fractional-pel resolution defines for each integer position of a motion vector a plurality of associated fractional positions. The video coder further comprises a sharpening filter configured to filter the prediction block, and a control unit configured to control the sharpening filter depending on the integer or fractional position of the motion vector used for generating the prediction block.

公开(公告)号：US20220248062A1

公开(公告)日：2022-08-04

申请号：US17707202

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich SOLOVYEV ,  Maxim Borisovitch SYCHEV ,  Huanbang CHEN ,  Alexander Alexandrovich KARABUTOV ,  Roman Igorevich CHERNYAK ,  Sergey Yurievich IKONIN ,  Haitao YANG ,  Elena Alexandrovna ALSHINA

IPC: H04N19/80 ,  H04N19/109 ,  H04N19/132 ,  H04N19/182 ,  H04N19/176 ,  H04N19/139 ,  H04N19/105 ,  H04N19/117 ,  H04N19/52 ,  H04N19/196

Abstract: An apparatus for inter prediction of a sample value of a current full-integer pixel of a plurality of pixels associated with a current block of a current frame of a video signal is disclosed. The apparatus is configured to: determine a motion vector of the current full-integer pixel based on a motion compensation model; determine for the current full-integer pixel a corresponding sub-integer pixel in a reference frame; determine positions of a set of corresponding filter support pixels in the reference frame; obtain a respective sample value of the corresponding sub-integer pixel of the current full-integer pixel and the corresponding filter support pixels in the reference frame by applying a bilinear interpolation; and determine the inter predicted sample value of the current full-integer pixel.

公开(公告)号：US20180213261A1

公开(公告)日：2018-07-26

申请号：US15934546

申请日：2018-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sergey Yurievich IKONIN ,  Maxim Borisovitch SYCHEV ,  Victor Alexeevich STEPIN

IPC: H04N19/82 ,  H04N19/51 ,  G06T5/00 ,  H04N19/44 ,  H04N19/117 ,  H04N19/176

CPC classification number: H04N19/82 ,  G06T5/003 ,  G06T2207/20201 ,  H04N19/117 ,  H04N19/176 ,  H04N19/44 ,  H04N19/50 ,  H04N19/51 ,  H04N19/523

Abstract: The present disclosure relates to a video coder for predictive coding a video stream of subsequent frames according to motion compensation into an encoded video bit stream, comprising a frame buffer (207) adapted to store at least one reference frame of the video stream, said reference frame being different from a current frame of the video stream, an inter prediction unit (210) adapted to generate a prediction block of a current block of the current frame from a reference block of the reference frame, and a sharpening filter (211) adapted to filter the prediction block.

公开(公告)号：US20180213250A1

公开(公告)日：2018-07-26

申请号：US15934043

申请日：2018-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sergey Yurievich IKONIN ,  Maxim Borisovitch SYCHEV ,  Victor Alexeevich STEPIN

IPC: H04N19/51 ,  H04N19/82 ,  G06T5/00 ,  H04N19/117 ,  H04N19/44 ,  H04N19/176

Abstract: The present disclosure relates to a video coder for predictive coding a video stream of subsequent frames according to motion compensation into an encoded video bit stream, comprising a frame buffer adapted to store at least one reference frame of the video stream, the reference frame being different from a current frame of the video stream, an inter prediction unit adapted to generate a prediction block of a current block of the current frame from a reference block of the reference frame, and an adaptive sharpening filter configured to adaptively filter the prediction block.

公开(公告)号：US20220217389A1

公开(公告)日：2022-07-07

申请号：US17701388

申请日：2022-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch SYCHEV

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/146 ,  H04N19/172

Abstract: A coding method implemented by a decoding/encoding device for coding video data comprises coding, in a supplemental enhancement information (SEI) message, a set of sequence parameters. The set of sequence parameters is associated with temporal IDs of the sub-layers of a bitstream or coded layer video sequence (C(L)VS). The coding method further comprises processing the bitstream or C(L)VS by using the set of sequence parameters included in the SEI message. The set of sequence parameters is used for deriving or representing a picture rate of the sequence.

公开(公告)号：US20210321113A1

公开(公告)日：2021-10-14

申请号：US17358572

申请日：2021-06-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch SYCHEV ,  Timofey Mikhailovich SOLOVYEV ,  Alexander Alexandrovich KARABUTOV ,  Sergey Yurievich IKONIN ,  Jianle CHEN

IPC: H04N19/137 ,  H04N19/159 ,  H04N19/503 ,  H04N19/46 ,  H04N19/176

Abstract: The disclosure provides a motion vector compression method, comprising: obtaining a temporal motion vector; determining a compressed motion vector using a binary representation of the temporal motion vector comprising an exponent part and/or a mantissa part, wherein the exponent part comprises N bits, the mantissa part comprises M bits, and wherein N is a non-negative integer and M is a positive integer; and performing a temporal motion vector prediction (TMVP) using the compressed motion vector.

公开(公告)号：US20200244965A1

公开(公告)日：2020-07-30

申请号：US16850854

申请日：2020-04-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Maxim Borisovitch SYCHEV ,  Georgy Aleksandrovich ZHULIKOV ,  Timofey Mikhailovich SOLOVYEV ,  Jianle CHEN

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/137 ,  H04N19/117 ,  H04N19/176

Abstract: The disclosure relates to an apparatus and method for inter prediction of a sample value of a current full-integer pixel of a plurality of pixels of a current block of a current frame of a video signal. The apparatus comprises a processing unit configured to: determine a motion vector of the current full-integer pixel on the basis of the current frame and a reference frame of the video signal and/or on the basis of a motion compensation model; determine for the current full-integer pixel a corresponding sub-integer pixel in the reference frame on the basis of the motion vector of the current full-integer pixel; generate on the basis of a predefined set of filter support pixels in the current frame a set of corresponding filter support pixels in the reference frame, wherein the predefined set of filter support pixels in the current frame comprises one or more neighboring full-integer and/or sub-integer pixels of the current full-integer pixel; determine a respective sample value of the corresponding sub-integer pixel of the current full-integer pixel and the corresponding filter support pixels in the reference frame; and determine the inter predicted sample value of the current pixel in the current frame by applying a spatial high-pass filter to the sample value of the corresponding sub-integer pixel of the current full-integer pixel in the reference frame and to the sample values of the corresponding filter support pixels in the reference frame.

公开(公告)号：US20250126265A1

公开(公告)日：2025-04-17

申请号：US19002140

申请日：2024-12-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich SOLOVYEV ,  Georgii Petrovich GAIKOV ,  Maxim Borisovitch SYCHEV ,  Alexander Alexandrovich KARABUTOV ,  Sergey Yurievich IKONIN

IPC: H04N19/13 ,  H04N19/184 ,  H04N19/196

Abstract: Methods and apparatuses are described to encoded data into a bitstream and to decode data from a bitstream. A decoding method including: receiving a bitstream including encoded data of an input signal and a first parameter; parsing the bitstream to obtain the first parameter; obtaining an entropy coding parameter based on the first parameter; reconstructing at least a portion of the input signal, based on the entropy coding parameter and the encoded data. Due to adaptiveness of the entropy coding parameters, the optimal work of the entropy coder is possible on low bitrates which results in the bitrate saving; and the absence of clipping effect is achieved on high bitrates, which results in higher reconstruction signal quality.