公开(公告)号：US11818357B2

公开(公告)日：2023-11-14

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 ,  H04N19/176 ,  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：US11616961B2

公开(公告)日：2023-03-28

申请号：US17357730

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yei-Kui Wang ,  FNU Hendry ,  Maxim Borisovitch Sychev

IPC: H04N19/174 ,  H04N19/119 ,  H04N19/172 ,  H04N19/30 ,  H04N19/70 ,  H04N19/44 ,  H04N19/66 ,  H04N19/176

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of first level tiles. A subset of the first level tiles is partitioned into a plurality of second level tiles. The first level tiles and the second level tiles are encoded into a bitstream. A split indication is encoded into the bitstream. The split indication indicates that at least one of the first level tiles is split into the second level tiles. The bitstream is stored for communication toward a decoder.

公开(公告)号：US20220174326A1

公开(公告)日：2022-06-02

申请号：US17678253

申请日：2022-02-23

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 ,  H04N19/139 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/117 ,  H04N19/61 ,  H04N19/122 ,  H04N19/85

Abstract: A method for coding a video implemented in an encoder or a decoder including the enhanced interpolation filter, EIF, for motion compensation, the method comprising: i) determining control point motion vectors, CPMVs, for a block according to affine inter-prediction, the block being an affine block or a sub-block of the affine block; ii) for a predefined sub-block size determining a reference area for a sub-block with the predefined sub-block size according to values of the CPMVs; iii) comparing the determined reference area with a predefined threshold; iv) applying EIF for motion compensation, comprising deriving the pixel-based motion vector field for the block; wherein if the determined reference area is larger than the threshold, deriving the pixel-based motion vector field for the block further comprises motion vector clipping, wherein motion vector clipping range is determined based on motion model of the block and the size of the block.

公开(公告)号：US11297324B2

公开(公告)日：2022-04-05

申请号：US16868382

申请日：2020-05-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch Sychev

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/117 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/52 ,  H04N19/593

Abstract: The invention 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 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. Moreover, the invention relates to an encoding apparatus and a decoding apparatus comprising such an inter prediction apparatus.

公开(公告)号：US11202099B2

公开(公告)日：2021-12-14

申请号：US16733984

申请日：2020-01-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Maxim Borisovitch Sychev ,  Alexis Decurninge ,  Dimitrios Tsilimantos ,  Alexander Alexandrovich Karabutov ,  Stefan Valentin ,  Sergey Yurievich Ikonin

IPC: H04N19/597 ,  H04N13/161 ,  H04N5/232 ,  H04N19/517 ,  H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/527 ,  G06T3/60

Abstract: A system and method for improving quality of encoding and decoding a panoramic video. The panoramic video comprises a sequence of encoded picture frames. In panoramic video picture frames are mapped on a spherical viewing area. In the method the projection center of the encoded frame is transformed before encoding. In the decoding phase the projection center is transformed back accordingly after decoding the frame.

公开(公告)号：US11202082B2

公开(公告)日：2021-12-14

申请号：US17035692

申请日：2020-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch Sychev ,  Georgy Aleksandrovich Zhulikov ,  Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin

IPC: H04N19/182 ,  H04N19/117 ,  H04N19/172 ,  H04N19/513

Abstract: The disclosure relates to an image processing apparatus. The image processing apparatus comprises processing circuitry configured to: obtain a direction angle value associated with the target pixel (12a-c); select for the target pixel (12a-c) a plurality of primary interpolation support pixels (10a-d) from the array of pixels (10a-d) on the basis of the position of the target pixel (12a-c); determine pixel values of a first and a second secondary interpolation support pixels (11ac, 11bd) on the basis of the pixel values of the selected primary interpolation support pixels (10a-d), the direction angle value (a, b) and the position of the target pixel (12a-c); and determine the interpolated pixel value of the target pixel (12a-c) on the basis of the pixel values of the first and second secondary interpolation support pixel (11ac, 11bd) and the position of the target pixel (12a-c).

公开(公告)号：US20210352276A1

公开(公告)日：2021-11-11

申请号：US17376463

申请日：2021-07-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Maxim Borisovitch Sychev ,  Timofey Mikhailovich Solovyev ,  Alexander Alexandrovich Karabutov ,  Sergey Yurievich Ikonin ,  Jianle Chen

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

Abstract: An apparatus and method for inter prediction of a block includes estimating local illumination compensation (LIC) parameters using first reference samples of a current block and second reference samples of a reference block, wherein a third reference sample of the second reference samples is based on an integer part of a fractional motion vector (MV), and obtaining inter prediction of the current block according to the LIC parameters.

公开(公告)号：US20210329265A1

公开(公告)日：2021-10-21

申请号：US17357730

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yei-Kui Wang ,  FNU Hendry ,  Maxim Borisovitch Sychev

IPC: H04N19/174 ,  H04N19/119 ,  H04N19/70 ,  H04N19/30 ,  H04N19/172

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of first level tiles. A subset of the first level tiles is partitioned into a plurality of second level tiles. The first level tiles and the second level tiles are encoded into a bitstream. A split indication is encoded into the bitstream. The split indication indicates that at least one of the first level tiles is split into the second level tiles. The bitstream is stored for communication toward a decoder.

公开(公告)号：US20210014511A1

公开(公告)日：2021-01-14

申请号：US17035692

申请日：2020-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch Sychev ,  Georgy Aleksandrovich Zhulikov ,  Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin

IPC: H04N19/182 ,  H04N19/513 ,  H04N19/172 ,  H04N19/117

Abstract: The disclosure relates to an image processing apparatus. The image processing apparatus comprises processing circuitry configured to: obtain a direction angle value associated with the target pixel (12a-c); select for the target pixel (12a-c) a plurality of primary interpolation support pixels (10a-d) from the array of pixels (10a-d) on the basis of the position of the target pixel (12a-c); determine pixel values of a first and a second secondary interpolation support pixels (11ac, 11bd) on the basis of the pixel values of the selected primary interpolation support pixels (10a-d), the direction angle value (a, b) and the position of the target pixel (12a-c); and determine the interpolated pixel value of the target pixel (12a-c) on the basis of the pixel values of the first and second secondary interpolation support pixel (11ac, 11bd) and the position of the target pixel (12a-c).