公开(公告)号：US11539962B2

公开(公告)日：2022-12-27

申请号：US17205340

申请日：2021-03-18

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/157 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70 ,  H04N19/96

Abstract: A decoding method for decoding an encoded picture which is partitioned into coding tree blocks which are further partitioned into coding blocks with different sizes, comprises parsing a first indication from the sequence parameter set (SPS)/picture parameter set (PPS)/slice header/tile header of a bit stream containing the encoded picture, determining the partition mode of the coding tree blocks, which are confined by block size restriction parameter and partition depth restriction parameter included in the SPS/PPS/slice header/tile header when the first indication is first value, or determining the partition mode of the multiple coding tree blocks, which are confined by default by block size restriction parameter and default partition depth restriction parameter when the first indication is second value or not presented in the SPS/PPS/slice header/tile header, and partitioning the coding tree blocks into the coding blocks according to the partition mode, and decoding the coding blocks.

公开(公告)号：US11539953B2

公开(公告)日：2022-12-27

申请号：US17188940

申请日：2021-03-01

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/122 ,  H04N19/119 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60

Abstract: A method for boundary partition of a current block is provided. The method includes obtaining a partition indicator from a received bitstream; determining whether the partition indicator indicates that the current block is to be split and whether the current block is a boundary block; and performing a non-inverse transform operation on an inside part of the current block when the partition indicator indicates that the current block is not to be split and the current block is a boundary block, wherein the inside part of the block is located within the picture. For the boundary block which is determined not to be split, a non-inverse transform operation is chosen. This avoids a normal inverse transform on the residuals of the inside part (within the picture) of the current block in the decoder, so number of blocks for the inverse transformation is decreased, and decoding complexity is thus reduced.

公开(公告)号：US11330268B2

公开(公告)日：2022-05-10

申请号：US17135427

申请日：2020-12-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhijie Zhao ,  Johannes Sauer ,  Mathias Wien

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/137 ,  H04N19/172 ,  H04N19/46

Abstract: A method for encoding a video signal includes generating an extension region of a first face of a reference frame, where the extension region includes a plurality of extension samples, and a sample value of each extension sample is based on a sample value of a sample of a second face of the reference frame, determining a use of an extension region, providing, based on the use, picture level extension usage information based on the extension region, and encoding the picture level extension usage information into an encoded video signal.

公开(公告)号：US11265538B2

公开(公告)日：2022-03-01

申请号：US17016033

申请日：2020-09-09

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/169 ,  H04N19/82

Abstract: An apparatus and a method for filtering reconstructed images, in particular, video images, with adaptive multiplicative filters. The efficiency of the filtering operation is increased by restricting the allowable values of the filter coefficients to those that have only a limited number of “ones” in the binary representation.

公开(公告)号：US11259054B2

公开(公告)日：2022-02-22

申请号：US17134442

申请日：2020-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N11/02 ,  H04N19/82 ,  H04N19/117 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/86

Abstract: An in-loop deblocking filter apparatus (120) for processing a current row or column of samples into a filtered row or column of samples. The current row or column of samples comprises a plurality of samples from a first sample block and a horizontally or vertically neighboring second sample block of a reconstructed picture of a video stream. The samples of the current row or column of samples have sample values pN−1−p0, q0−qN−1 wherein N is an even integer greater than 2. If a first condition or a second condition is satisfied, the current row or column is processed by: determining a filtered sample value q0′ by applying a (2N−1)-tap filter to the sample values pN−2, . . . , p0, q0, . . . , qN−1 of the current row or column; and/or determining a filtered sample value p0′ by applying a (2N−1)-tap filter to the sample values pN−1, . . . , p0, q0, . . . , qN−2 of the current row or column.

公开(公告)号：US11197031B2

公开(公告)日：2021-12-07

申请号：US17134442

申请日：2020-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N11/02 ,  H04N19/82 ,  H04N19/117 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/86

Abstract: An in-loop deblocking filter apparatus (120) for processing a current row or column of samples into a filtered row or column of samples. The current row or column of samples comprises a plurality of samples from a first sample block and a horizontally or vertically neighboring second sample block of a reconstructed picture of a video stream. The samples of the current row or column of samples have sample values pN−1−p0, q0−qN−1 wherein N is an even integer greater than 2. If a first condition or a second condition is satisfied, the current row or column is processed by: determining a filtered sample value q0′ by applying a (2N−1)-tap filter to the sample values pN−2, . . . , p0, q0, . . . , qN−1 of the current row or column; and/or determining a filtered sample value p0′ by applying a (2N−1)-tap filter to the sample values pN−1, . . . , p0, q0, . . . , qN−2 of the current row or column.

公开(公告)号：US11184643B2

公开(公告)日：2021-11-23

申请号：US16531898

申请日：2019-08-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher Kotra ,  Semih Esenlik ,  Zhijie Zhao

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: A system and method for processing a video stream are provided. When coding or decoding a video stream a de-blocking filtering may be applied for reducing discontinuities caused by use of a block-based video coding. The de-blocking filtering is performed using a filter grid. The size of the filter grid is chosen adaptively based on the processing parameters. The adaptive size of the filtering grid is determined based on the number of samples used and modified in de-blocking filtering of an edge of a coding block. The filtering grid may be used both for vertical and horizontal edge filtering.

公开(公告)号：US20210352284A1

公开(公告)日：2021-11-11

申请号：US17382550

申请日：2021-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: Embodiments of the present disclosure relate to the field of picture processing. Especially, the embodiments are directed to improving the deblocking filter of an image coding device. During the deblocking, at most a number MA of sample values of the first coding block adjacent to the block edge are modified and at most a number MB of sample values of the second coding block adjacent to the block edge are modified; or at most a number MA of sample values of the second coding block adjacent to the block edge are modified and at most a number MB of sample values of the first coding block adjacent to the block edge are modified, MA≠MB.

公开(公告)号：US11122292B2

公开(公告)日：2021-09-14

申请号：US16843707

申请日：2020-04-08

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/57 ,  H04N19/52 ,  H04N19/56 ,  H04N19/533 ,  H04N19/573

Abstract: A motion vector determination employs template matching. At first, an initial motion vector is obtained. If the initial motion vector points to a position that is fractional, and thus, requires interpolation from the integer sample positions, the initial motion vector is rounded to a closest integer sample position. The rounded position is then used to define the search space for the template matching to define a refinement of the initial motion vector.

公开(公告)号：US11122286B2

公开(公告)日：2021-09-14

申请号：US16844901

申请日：2020-04-09

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/513 ,  H04N19/57 ,  H04N19/573

Abstract: The present disclosure relates to motion vector determination using template matching. In particular, an initial motion vector and a template are obtained for a prediction block. Then a refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector. The template matching accesses integer sample positions within a predetermined window, the predetermined window including said search space and further integer sample positions accessible for the template matching, replaces at least one integer sample position located out of the window by at least one replacement value, each replacement value is based on at least one sample within said window, and uses the accessed integer sample position values as well as the at least one replacement value to perform the template matching.