公开(公告)号：US11936861B2

公开(公告)日：2024-03-19

申请号：US17099470

申请日：2020-11-16

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Quanhe Yu ,  Jicheng An ,  Jianhua Zheng ,  Yongbing Lin ,  Liqiang Wang ,  Benben Niu ,  Ziwei Wei ,  Yun He

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

Abstract: Embodiments of this application relate to the video coding and compression field, and disclose an encoding method and apparatus, and a decoding method and apparatus, to resolve a problem that an existing split mode cannot satisfy a relatively complex texture requirement. The decoding method specifically includes: parsing a bitstream to determine a basic split mode for a current to-be-decoded picture block and a target derivation mode for a subpicture block of the current to-be-decoded picture block; splitting the current to-be-decoded picture block into N subpicture blocks in the basic split mode, where N is an integer greater than or equal to 2; deriving one derived picture block from at least two adjacent subpicture blocks in the N subpicture blocks in the target derivation mode; and decoding the derived picture block.

公开(公告)号：US20230049334A1

公开(公告)日：2023-02-16

申请号：US17971086

申请日：2022-10-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hu Chen ,  Elena Alexandrovna Alshina ,  Weiwei Xu ,  Quanhe Yu ,  Yichuan Wang

IPC: H04N5/235 ,  G06T5/00 ,  H04N19/154 ,  G06V10/60

Abstract: This application provides a high dynamic range HDR video processing method, an encoding device, and a decoding device. The method includes: obtaining dynamic metadata of an Nth HDR video frame according to a dynamic metadata generation algorithm; calculating a tone-mapping (tone-mapping) curve parameter of the Nth HDR video frame based on the dynamic metadata of the Nth HDR video frame; generating a tone-mapping curve based on the curve parameter; determining, according to a quality assessment algorithm, distortion D′ caused by the tone-mapping curve; comparing D′ and DT, to determine a mode used by the Nth HDR video frame, where the mode is an automatic mode or a director mode, and DT is a threshold value; and determining metadata of the Nth HDR video frame based on the determined mode used by the Nth HDR video frame.

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：US20250045871A1

公开(公告)日：2025-02-06

申请号：US18713237

申请日：2022-11-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiangyu Hu ,  Weiwei Xu ,  Jinsong Wen ,  Yanbing Jia ,  Jiantong Zhou ,  Qiyan Zhai ,  Yihua Zeng ,  Quanhe Yu ,  Zizhong Wang ,  Yichuan Wang ,  Hu Chen ,  Jinqin Ai ,  Yutong Hu

IPC: G06T5/20 ,  G06F3/04845 ,  G06F3/04883

Abstract: This application provides a picture processing method. The method includes: The encoder side obtains a to-be-processed picture, obtains a plurality of groups of visual sensory experience parameters, and encodes the to-be-processed picture and the plurality of groups of visual sensory experience parameters. At a decoder side, the method includes: The decoder side obtains a to-be-processed picture, obtains a zoom-in operation instruction, obtains one or more groups of visual sensory experience parameters corresponding to one or more local pictures, and separately processes the corresponding local picture based on the one or more groups of visual sensory experience parameters to obtain a processed local picture.

公开(公告)号：US20230057829A1

公开(公告)日：2023-02-23

申请号：US17982221

申请日：2022-11-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hu Chen ,  Yichuan Wang ,  Weiwei Xu ,  Quanhe Yu ,  Elena Alexandrovna Alshina

IPC: G06T5/00 ,  G06T5/40

Abstract: The present disclosure relates generally to the field of video processing, and more particularly to high dynamic range (HDR) video and image processing. In particular, the present disclosure relates to determining one or more curve parameters of a tone mapping curve. For example, a device (encoder or decoder) may obtain a high dynamic range (HDR) video frame and metadata associated to the HDR video frame. The device further obtains a pair of anchor points, based on the HDR video frame and the metadata. The pair of anchor points comprises a first anchor point and a second anchor point of the tone mapping curve. Moreover, the device generates the one or more curve parameters of the tone mapping curve based on the pair of anchor points.

公开(公告)号：US20240397070A1

公开(公告)日：2024-11-28

申请号：US18793919

申请日：2024-08-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yichuan Wang ,  Quanhe Yu ,  Weiwei Xu ,  Hu Chen ,  Hongjie You

IPC: H04N19/30 ,  G06T3/40 ,  H04N9/64 ,  H04N19/136 ,  H04N19/182 ,  H04N19/70

Abstract: The present disclosure discloses an image processing method, apparatus, and a storage medium. The method includes: parsing an original bitstream of a to-be-processed image to obtain the to-be-processed image; parsing a first layered bitstream of the to-be-processed image to obtain a first layered image of the to-be-processed image; determining a second layered image of the to-be-processed image based on the to-be-processed image and the first layered image, where one of the first layered image and the second layered image is a base layer image, and the other of the first layered image and the second layered image is a detail layer image; performing tone mapping on the base layer image to obtain a mapping result of the base layer image; and fusing the mapping result of the base layer image and the detail layer image.

公开(公告)号：US12143569B2

公开(公告)日：2024-11-12

申请号：US17872240

申请日：2022-07-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Na Zhang ,  Jicheng An ,  Quanhe Yu ,  Jianhua Zheng

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30

Abstract: An inter prediction method is provided, including: obtaining a first reference frame index and a first motion vector of a to-be-processed block (101); deriving a second reference frame index from the first reference frame index, where the second reference frame index is different from the first reference frame index (102); scaling the first motion vector to obtain a second motion vector (103); obtaining a first reference block of the to-be-processed block according to the first reference frame index and the first motion vector (104); obtaining a second reference block of the to-be-processed block according to the second reference frame index and the second motion vector (105); and weighting the first reference block and the second reference block to obtain a combined prediction block (106). Each reference list for inter prediction is allowed to include two groups of motion information, which helps improve an inter prediction effect.

公开(公告)号：US11323749B2

公开(公告)日：2022-05-03

申请号：US17062110

申请日：2020-10-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianhua Zheng ,  Quanhe Yu ,  Meng Li ,  Hai Chen ,  Chen-Xiong Zhang

IPC: H04N19/98 ,  H04N19/13 ,  H04N19/186 ,  H04N19/85 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes at least one pre-encoder configured to pre-encode a received input video signal, and output a pre-encoded video signal. The mechanism also includes an encoder configured to obtain the pre-encoded video signal from the pre-encoder, and encode the pre-encoded video signal as a bitstream for transmitting the bitstream to decoder for decoding.

公开(公告)号：US20250055978A1

公开(公告)日：2025-02-13

申请号：US18929661

申请日：2024-10-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Na Zhang ,  Jicheng An ,  Quanhe Yu ,  Jianhua Zheng

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30

Abstract: An inter prediction method is provided, including: obtaining a first reference frame index and a first motion vector of a to-be-processed block; deriving a second reference frame index from the first reference frame index, where the second reference frame index is different from the first reference frame index; scaling the first motion vector to obtain a second motion vector; obtaining a first reference block of the to-be-processed block according to the first reference frame index and the first motion vector; obtaining a second reference block of the to-be-processed block according to the second reference frame index and the second motion vector; and weighting the first reference block and the second reference block to obtain a combined prediction block. Each reference list for inter prediction is allowed to include two groups of motion information, which helps improve an inter prediction effect.

公开(公告)号：US12112460B2

公开(公告)日：2024-10-08

申请号：US17564653

申请日：2021-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Quanhe Yu

IPC: G06T5/90 ,  G06T5/92

CPC classification number: G06T5/92 ,  G06T2207/10016 ,  G06T2207/20208

Abstract: An image processing method includes obtaining a target picture and an initial tone mapping curve of the target picture, determining a plurality of interpolation points based on luminance information and/or dynamic metadata of the target picture, and determining a spline function that passes through the plurality of interpolation points, where the spline function is smoothly connected to the initial tone mapping curve at at least one of the plurality of interpolation points the initial tone mapping curve is modified based on the spline function to obtain a modified tone mapping curve of the target picture; and tone mapping is performed on the target picture based on the modified tone mapping curve. This image processing apparatus enables a display device to vividly and realistically reproduce a scene in a real world.