公开(公告)号：US12284350B2

公开(公告)日：2025-04-22

申请号：US17721561

申请日：2022-04-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weiwei Xu ,  Quanhe Yu ,  Hu Chen ,  Elena Alexandrovna Alshina ,  Rafal Mantiuk

IPC: H04N19/126 ,  H04N19/136 ,  H04N19/172 ,  H04N19/186 ,  H04N19/189

Abstract: Embodiments of this application provide a method for processing image signal conversion, including: obtaining a primary color component of a to-be-processed pixel; and converting a first value of the primary color component into a second value based on a preset dynamic range conversion model, where the dynamic range conversion model is: L ′ = F ⁡ ( L ) = a × ( p × L n ( k 1 × p - k 2 ) × L n + k 3 ) m + b , where L is the first value, L′ is the second value, and k1, k2, k3, a, b, m, n, and p are model parameters.

公开(公告)号：US12267491B2

公开(公告)日：2025-04-01

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: H04N19/00 ,  H04N19/117 ,  H04N19/167 ,  H04N19/176 ,  H04N19/96

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.

公开(公告)号：US12184858B2

公开(公告)日：2024-12-31

申请号：US18319174

申请日：2023-05-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih Esenlik ,  Biao Wang ,  Anand Meher Kotra ,  Elena Alexandrovna Alshina

IPC: H04N11/02 ,  H04N19/129 ,  H04N19/169 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70

Abstract: A method of decoding of a picture from a video bitstream is disclosed. The video bitstream includes a slice header of a current slice and data representing the current slice. The method comprises: obtaining a parameter used to derive a number of tiles in the current slice from the slice header when a slice address of the current slice is not an address of a last tile in the picture where the current slice located; and reconstructing the current slice using the number of tiles in the current slice and the data representing the current slice.

公开(公告)号：US20240414361A1

公开(公告)日：2024-12-12

申请号：US18744323

申请日：2024-06-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Georgii Petrovich Gaikov ,  Sergey Yurievich Ikonin ,  Ahmet Burakhan Koyuncu ,  Alexander Alexandrovich Karabutov ,  Timofey Mikhailovich Solovyev ,  Elena Alexandrovna Alshina

IPC: H04N19/20 ,  H04N19/17 ,  H04N19/82

Abstract: A method of processing a current object is provided. A set of input data tensors representing the current object are inputted into a first neural layer of a transformer based neural network. Based on information about processing the current object, at least one auxiliary data tensor is inputted into the first neural layer or a second neural layer of the transformer based neural network, where the at least one auxiliary data tensor is different from each of the input data tensors of the set of input data tensors and represents at least one auxiliary input. The set of input data tensors are processed by the transformer based neural network using the at least one auxiliary data tensor in order to obtain a set of output data tensors.

公开(公告)号：US12132896B2

公开(公告)日：2024-10-29

申请号：US18058139

申请日：2022-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy ,  Elena Alexandrovna Alshina

IPC: H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82

Abstract: A method comprising: signaling a set of low-level indicators for a predicted block, wherein each of the indicators of the set enables or disables an intra prediction smoothing mechanism for the predicted block; signaling a first set of high-level indicators on a slice-level or a higher level, wherein each of the high-level indicators of the first set determines signaling for an intra prediction smoothing mechanism which is enabled or disabled by an indicator of the set of low-level indicators; and signaling a second set of high-level indicators, wherein each of the high-level indicators of the second set determines the presence of at least one of the corresponding high-level indicators of the first set, and wherein the values of corresponding high-level indicators of the first set are inferred to be zero when the value signaled by high-level indicator of the second set is zero.

公开(公告)号：US20240296594A1

公开(公告)日：2024-09-05

申请号：US18662752

申请日：2024-05-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  FRIEDRICH-ALEXANDER-UNIVERSITAT, ERLANGEN-NURNBERG

Inventor： Timofey Mikhailovich Solovyev ,  Fabian Brand ,  Jürgen Seiler ,  Andre Kaup ,  Elena Alexandrovna Alshina

IPC: G06T9/00 ,  H04N19/20 ,  H04N19/587

CPC classification number: G06T9/002 ,  H04N19/20 ,  H04N19/587

Abstract: This application provides methods and apparatuses for encoding image or video related data into a bitstream. The present disclosure may be applied in the field of artificial intelligence (AI)-based video or picture compression technologies, and in particular, to the field of neural network-based video compression technologies. A neural network (generalized difference) is applied to a signal and a predicted signal during the encoding to obtain a generalized residual. During the decoding another neural network (generalized sum) may be applied to a reconstructed generalized residual and the predicted signal to obtain a reconstructed signal.

公开(公告)号：US12075045B2

公开(公告)日：2024-08-27

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 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/503 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/503 ,  H04N19/70

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：US20240275967A1

公开(公告)日：2024-08-15

申请号：US18604198

申请日：2024-03-13

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 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184

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：US12047613B2

公开(公告)日：2024-07-23

申请号：US18064745

申请日：2022-12-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kai Cui ,  Atanas Boev ,  Elena Alexandrovna Alshina ,  Eckehard Steinbach

IPC: H04N19/88 ,  H04N19/136 ,  H04N19/167 ,  H04N19/17 ,  H04N19/186 ,  H04N19/436

CPC classification number: H04N19/88 ,  H04N19/136 ,  H04N19/167 ,  H04N19/17 ,  H04N19/186 ,  H04N19/436

Abstract: The present disclosure relates to image modification such as an image enhancement. The image enhancement may be applied for any image modification and it may be applied during or after image encoding and/or decoding, e.g. as a loop filter or a post filter. In particular, the image modification includes a multi-channel processing in which a primary channel is processed separately and secondary channels are processed based on the processed primary channel. The processing is based on a neural network. In order to enhance the image modification performance, prior to applying the modification, the image channels are analyzed and a primary channel and the secondary channels are determined, which may vary for multiples of images, images or image areas.

公开(公告)号：US12047599B2

公开(公告)日：2024-07-23

申请号：US17858700

申请日：2022-07-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Timofey Mikhailovich Solovyev ,  Maxim Borisovitch Sychev ,  Roman Igorevich Chernyak ,  Alexander Alexandrovich Karabutov ,  Sergey Yurievich Ikonin ,  Elena Alexandrovna Alshina

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/55

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/55

Abstract: A method for coding video data is disclosed. The method comprises: obtaining a center motion vector of a coding block; deriving a first motion vector range for the coding block based on the center motion vector and a motion vector spread, wherein the motion vector spread depends on a size of the coding block; if the first motion vector range is at least partially pointing outside a first area including a reference picture, updating the first motion vector range to point within the first area, such that a minimum value or a maximum value of the updated first motion vector range is pointing at a boundary of the first area.