公开(公告)号：US12217438B2

公开(公告)日：2025-02-04

申请号：US17174536

申请日：2021-02-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhijie Zhao ,  Yuntan Fang ,  Jun Zha ,  Hu Chen ,  Jiantong Zhou

IPC: G06K9/00 ,  G06T3/40 ,  G06T7/20 ,  G06T7/254 ,  G06V20/40

Abstract: Embodiments of this application disclose example apparatuses, methods, and computer program products for extracting a feature from an image of a scene. One example apparatus comprises at least one processor and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to, in response to a feature extraction event, extract a feature from first image data representing a first image of a scene, wherein the feature extraction event is based on second image data representing a second image of the scene.

公开(公告)号：US12192534B2

公开(公告)日：2025-01-07

申请号：US18476309

申请日：2023-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/14 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/80 ,  H04N19/86

Abstract: An image processing device for use in an image encoder and/or an image decoder, for deblocking a block edge between a first block and a second block of an image encoded with a block code, is provided. The image processing device comprises a filter for filtering the block edge, configured to, for at least some of the pixels to be filtered, within a deblocking range from the block edge, the deblocking range being perpendicular to the block edge, determine a filtered pixel value from an original pixel value of the pixel and at least one further pixel value, determine a clipping value of the pixel, dependent upon a distance of the pixel from the block edge, and clip the filtered pixel value, using the clipping value resulting in a deblocked pixel value.

公开(公告)号：US12177433B2

公开(公告)日：2024-12-24

申请号：US18168188

申请日：2023-02-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

Abstract: The present disclosure relates to methods and devices to be employed for encoding and decoding of image or video signal. They include determination of whether or not the size of a current block is larger than a minimum allowed quadtree leaf node size. If the size of the current block is not larger than the minimum allowed quadtree leaf node size, multi-type tree splitting is applied to the current block. The minimum allowed quadtree leaf node size is not larger than a maximum allowed binary tree root node size or the minimum allowed quadtree leaf node size is not larger than a maximum allowed ternary tree root node size.

公开(公告)号：US12143625B2

公开(公告)日：2024-11-12

申请号：US17225939

申请日：2021-04-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Max Blaeser ,  Zhijie Zhao

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/96

Abstract: A method for inter prediction of a current geometric partition of a coding block includes, when the coding block is enabled for a geometric partition merge mode, generating a merge candidate list for the coding block partitioned into two geometric partitions including the current geometric partition. The merge candidate list generation comprises deriving one or more spatial merge candidates from neighboring coding units, and directly or immediately deriving one or more temporal motion vector predictions (MVPs). An uni-prediction MV is derived as a motion vector of the current geometric partition based on the merge candidate list. The current geometric partition of the coding block is predicted based on the uni-prediction MV to obtain a predicted value of the current geometric partition.

公开(公告)号：US12069291B2

公开(公告)日：2024-08-20

申请号：US18472049

申请日：2023-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/513 ,  H04N19/57

CPC classification number: H04N19/513 ,  H04N19/57

Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the 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 and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.

公开(公告)号：US12047555B2

公开(公告)日：2024-07-23

申请号：US17557930

申请日：2021-12-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih Esenlik ,  Max Blaeser ,  Zhijie Zhao ,  Han Gao ,  Biao Wang ,  Anand Meher Kotra ,  Elena Alexandrovna Alshina

IPC: H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A method for coding implemented by a decoding device or an encoding device includes: obtaining a first prediction mode for a first sub-block, obtaining a second prediction mode for a second sub-block; obtaining a first prediction value for a sample in the current block according to the first prediction mode, obtaining a second prediction value for the sample in the current block according to the second prediction mode; obtaining a value of an indicator, the value of the indicator indicating a blending operation which is performed for the sample in the current block; and obtaining a combined prediction value for the sample in the current block, according to the value of the indictor, the first prediction value, and the second prediction value. The blending operation adaptively performs around a separation line dividing the current block into at least the first sub-block and the second sub-block.

公开(公告)号：US11962773B2

公开(公告)日：2024-04-16

申请号：US18076200

申请日：2022-12-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Semih Esenlik ,  Max Blaeser ,  Zhijie Zhao ,  Han Gao ,  Anand Meher Kotra ,  Biao Wang ,  Elena Alexandrovna Alshina

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159

Abstract: A method of coding implemented by a decoding device, comprising obtaining a bitstream; obtaining a value of an indicator for a current block according to the bitstream; obtaining a value of a first parameter for the current block and a value of a second parameter for the current block, according to the value of the indicator and a predefined lookup table; obtaining a value of a sample distance for a sample which is located in the current block, according to the value of the first parameter and the value of the second parameter; obtaining a prediction value for the sample, according to the value of the sample distance for the sample.

公开(公告)号：US20240031571A1

公开(公告)日：2024-01-25

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

CPC classification number: 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：US11838520B2

公开(公告)日：2023-12-05

申请号：US17360805

申请日：2021-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Johannes Sauer ,  Ye-Kui Wang ,  Zhijie Zhao ,  Semih Esenlik

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

CPC classification number: H04N19/174 ,  H04N19/119 ,  H04N19/172

Abstract: A device for encoding and a device for decoding a picture, respectively, and corresponding methods relating to the field of picture coding are provided. The devices are respectively configured to partition the picture into one or more slices, each slice comprising one or more tiles, and one or more slices holding coded picture data. Further, the devices are configured to encode the one or more slices holding coded picture data, thereby improving coding and decoding of pictures with uncoded buffer space.

公开(公告)号：US11736718B2

公开(公告)日：2023-08-22

申请号：US17349557

申请日：2021-06-16

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/56 ,  H04N19/513 ,  H04N19/55

CPC classification number: H04N19/56 ,  H04N19/521 ,  H04N19/55

Abstract: The embodiments disclosed herein relate to the construction of a search space for determining a motion vector for a current block of a picture in a video sequence. The search space construction is split into in two main stages, wherein a first and a second partial search space are respectively determined. Based on an initial estimate of a motion vector, a first search space is first constructed. A first and a second candidate motion of the first search space are identified according to a cost function. Based on the first and the second candidate motion vectors, a second search space is constructed. The motion vector for the current block is selected from the candidate motion vectors of the first search space and the second search space.