公开(公告)号：US20220116598A1

公开(公告)日：2022-04-14

申请号：US17561087

申请日：2021-12-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Victor Alexeevich STEPIN ,  Sergey Yurievich IKONIN ,  Elena Alexandrovna ALSHINA

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/172 ,  H04N19/136 ,  H04N19/196

Abstract: A method for in-loop filtering by performing adaptive loop filtering on a reconstructed frame of a video stream, implemented by an encoding device or a decoding device, the method comprising forming differences between a pixel of the reconstructed frame and neighboring pixels in a connected area of the pixel, clipping the differences according to respective clipping levels, forming a weighted sum of the clipped differences, and adding the weighted sum to the pixel to determine a filtered pixel, wherein the respective clipping levels are chosen from a same set of clipping levels for the luma and chroma components.

公开(公告)号：US20220070460A1

公开(公告)日：2022-03-03

申请号：US17452137

申请日：2021-10-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sergey Yurievich IKONIN ,  Roman Igorevich CHERNYAK ,  Timofey Mikhailovich SOLOVYEV ,  Alexander Alexandrovich KARABUTOV ,  Elena Alexandrovna ALSHINA ,  Jianle CHEN

IPC: H04N19/124 ,  H04N19/186 ,  H04N19/184 ,  H04N19/172 ,  H04N19/174

Abstract: A method of obtaining a chrominance quantization parameter (QP) for chrominance components based on a luminance QP for a luminance component, wherein the method is performed by a decoder, and comprises parsing a received bitstream to obtain the luminance QP and information of a mapping function (ƒ) which associates a QP index (QPi) to a chrominance QP (QPc); obtaining the QPi based at least in part on the luminance QP; obtaining the mapping function based on the obtained information of the mapping function; and obtaining a QPc based on the obtained mapping function and the obtained QPi.

公开(公告)号：US20220038686A1

公开(公告)日：2022-02-03

申请号：US17451139

申请日：2021-10-15

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/132 ,  H04N19/82 ,  H04N19/159 ,  H04N19/176

Abstract: The present disclosure relates to video encoding and decoding, and in particular, a method for inter prediction for a block in a frame of a video signal includes: constructing a history-based motion information candidate list, wherein the list is an ordered list comprising N history-based motion information candidates Hk containing motion information of N preceding blocks preceding the block, wherein each history-based motion information candidate comprises elements: one or more motion vectors (MVs), one or more reference picture indices corresponding to the MVs, and an interpolation filter index; adding one or more history-based motion information candidates from the history-based motion information candidate list into a motion information candidate list for the block; and deriving motion information for the block based on the motion information candidate list.

公开(公告)号：US20210390658A1

公开(公告)日：2021-12-16

申请号：US17458699

申请日：2021-08-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Nickolay Dmitrievich EGOROV ,  Elena Alexandrovna ALSHINA ,  Marat Ravilevich GILMUTDINOV ,  Dmitry Vadimovich NOVIKOV ,  Anton Igorevich VESELOV ,  Kirill Aleksandrovich MALAKHOV

IPC: G06T3/40 ,  G06T5/00 ,  G06N3/08

Abstract: An image processing apparatus processes a color filter mosaic, CFM, image of a scene into a final image of the scene. The image processing apparatus includes processing circuitry configured to implement a neural network. The neural network is configured to process the CFM image into an enhanced CFM image. The processing circuitry is further configured to transform the enhanced CFM image into the final image.

公开(公告)号：US20240205406A1

公开(公告)日：2024-06-20

申请号：US18439264

申请日：2024-02-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sergey Yurievich IKONIN ,  Roman Igorevich CHERNYAK ,  Timofey Mikhailovich SOLOVYEV ,  Alexander Alexandrovich KARABUTOV ,  Elena Alexandrovna ALSHINA ,  Jianle CHEN

IPC: H04N19/126 ,  H04N19/124 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/44

CPC classification number: H04N19/126 ,  H04N19/124 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/44

Abstract: A method of obtaining a chrominance quantization parameter (QP) for chrominance components based on a luminance QP for a luminance component, wherein the method is performed by a decoder, and comprises parsing a received bitstream comprising a sequence parameter set (SPS) to obtain the luminance QP and information of a mapping function (ƒ) which associates a QP index (QPi) to a chrominance QP (QPc), wherein the chroma QP mapping table is signaled in the SPS; obtaining the QPi based at least in part on the luminance QP; obtaining the mapping function based on the obtained information of the mapping function; and obtaining a QPc based on the obtained mapping function and the obtained QPi.

公开(公告)号：US20240146924A1

公开(公告)日：2024-05-02

申请号：US18545145

申请日：2023-12-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han GAO ,  Semih ESENLIK ,  Elena Alexandrovna ALSHINA ,  Anand Meher KOTRA ,  Biao WANG

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46

Abstract: The present disclosure provides a method of coding implemented by a decoding device, the method comprising: obtaining a value of a splitting mode index for a current coding block; obtaining a value of an angle index for the current coding block according to the value of the splitting mode index value and a pre-stored table; setting a value of an index partIdx according to the value of the angle index; and storing motion information for the current coding block according to the value of the index partIdx.

公开(公告)号：US20240137527A1

公开(公告)日：2024-04-25

申请号：US18371231

申请日：2023-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao WANG ,  Semih ESENLIK ,  Han GAO ,  Anand Meher KOTRA ,  Elena Alexandrovna ALSHINA

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/197

Abstract: A method of coding implemented by a decoding device or an encoding device, comprising obtaining indication information for a luma position (cbWidth/2, cbHeight/2) of a current coding block, relative to a top-left luma sample position (xCb, yCb) of the current coding block; setting a value of a luma intra prediction mode associated with the current coding block to a first default value, when the indication information indicates that an Intra Block Copy (IBC) mode or palette mode is applied for the luma component at the luma position (cbWidth/2, cbHeight/2), relative to the top-left luma sample position (xCb, yCb) of the current coding block; and obtaining a value of a chroma intra prediction mode based on the value of the luma intra prediction mode of the current coding block.

公开(公告)号：US20230068266A1

公开(公告)日：2023-03-02

申请号：US17951499

申请日：2022-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao WANG ,  Semih ESENLIK ,  Elena Alexandrovna ALSHINA ,  Anand Meher KOTRA ,  Han GAO

IPC: H04N19/70 ,  H04N19/187 ,  H04N19/172

Abstract: A method of decoding of a video or picture bitstream implemented by a decoding device, the bitstream including a current sequence parameter set (SPS) comprising syntax elements that apply to a video sequence, the method comprising: obtaining a first syntax element used to determine a maximum number of temporal sublayers that is allowed to be present in each coded layer video sequence) referring to the current SPS, wherein a value of the first syntax element is in a range of 0 to a first value, wherein the first value is a value of a second syntax element used to determine the maximum number of temporal sublayers that is allowed to present in a layer in each coded video sequence referring to a video parameter set, when the second syntax element is referred to by the SPS; decoding the bitstream based on the value of the first syntax element.

公开(公告)号：US20220400260A1

公开(公告)日：2022-12-15

申请号：US17861641

申请日：2022-07-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Huanbang CHEN ,  Vasily Alexeevich RUFITSKIY ,  Haitao YANG ,  Elena Alexandrovna ALSHINA

IPC: H04N19/119 ,  H04N19/174 ,  H04N19/172 ,  H04N19/176 ,  H04N19/70 ,  H04N19/503

Abstract: A method of coding is described. The method can include obtaining a bitstream for a current picture, obtaining a value of a first indicator for the current picture according to the bitstream indicating a slice type, and obtaining a value of a second indicator for the current picture according to the bitstream indicating whether a weighted prediction parameter is present in a picture header or slice header of the bitstream. The method can also include parsing a value of the weighted prediction parameter for a current block of a current slice of the current picture from the bitstream. Furthermore, the method can include predicting the current block according to the value of the weighted prediction parameter.

公开(公告)号：US20220377326A1

公开(公告)日：2022-11-24

申请号：US17871753

申请日：2022-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Anand Meher KOTRA ,  Semih ESENLIK ,  Han GAO ,  Biao WANG ,  Elena Alexandrovna ALSHINA

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/96 ,  H04N19/167

Abstract: A method of filtering a sample value of a picture and a video decoding apparatus are disclosed, the method comprises: obtaining a reconstructed sample value for a block of the picture; obtaining filter coefficients for adaptive loop filtering according to a bitstream; obtaining a sum value according to the filter coefficients and the reconstructed sample value for the block; rounding the sum value according to a vertical position of a sample in the block, to obtain a rounded sum value; obtaining a filter reconstructed sample value for the block according to the rounded sum value.