公开(公告)号：US11863748B2

公开(公告)日：2024-01-02

申请号：US17547169

申请日：2021-12-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/124 ,  H04N19/186 ,  H04N19/196

CPC classification number: H04N19/124 ,  H04N19/186 ,  H04N19/196

Abstract: A method of obtaining quantization parameter (QP) for chrominance components based on QP for luminance component, wherein the method is performed by a decoder or encoder, and wherein the method comprises obtaining a luminance QP for a luma component of a coding unit; obtaining a QP index (QPi) based at least in a part on the luminance QP; and obtaining a chrominance QP (QPc) for a chroma component of the coding unit based on the QP index by using a preset lookup table, wherein the maximum difference between the QP index and the chrominance QP is equal to 3.

公开(公告)号：US20230353764A1

公开(公告)日：2023-11-02

申请号：US18340704

申请日：2023-06-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sergey Yurievich Ikonin ,  Mikhail Vyacheslavovich Sosulnikov ,  Alexander Alexandrovich Karabutov ,  Timofey Mikhailovich Solovyev ,  Biao Wang ,  Elena Alexandrovna Alshina

IPC: H04N19/139 ,  H04N19/59 ,  H04N19/70 ,  H04N19/33

CPC classification number: H04N19/33 ,  H04N19/139 ,  H04N19/59 ,  H04N19/70

Abstract: A method and apparatus for decoding data for still or video processing into a bitstream are provided. In particular, two or more sets of feature map elements are obtained from the bitstream. Each set of feature map elements relates to a feature map. Each of the two or more sets of feature map elements is then respectively inputted into two or more feature map processing layers out of a plurality of cascaded layers. The decoded data for picture or video processing is then obtained as a result of the processing by the plurality of cascaded layers. According to the present disclosure, the data may be decoded from the bitstream in an efficient manner in the layered structure.

公开(公告)号：US20230336759A1

公开(公告)日：2023-10-19

申请号：US18339783

申请日：2023-06-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sergey Yurievich Ikonin ,  Mikhail Vyacheslavovich Sosulnikov ,  Alexander Alexandrovich Karabutov ,  Timofey Mikhailovich Solovyev ,  Biao Wang ,  Elena Alexandrovna Alshina

IPC: H04N19/46 ,  H04N19/132

CPC classification number: H04N19/46 ,  H04N19/132

Abstract: The present disclosure relates to methods and apparatuses for decoding data for (still or video processing into a bitstream). Two or more sets of segmentation information elements are obtained from the bitstream. Then, each of the two or more sets of segmentation information elements are inputted respectively into two or more segmentation information processing layers out of a plurality of cascaded layers. In each of the two or more segmentation information processing layers, the respective sets of segmentation information are processed. The decoded data for picture or video processing are obtained based on the segmentation information processed by the plurality of cascaded layers. Accordingly, the data may be decoded from the bitstream in an efficient manner in the layered structure.

公开(公告)号：US20230336758A1

公开(公告)日：2023-10-19

申请号：US18339772

申请日：2023-06-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sergey Yurievich Ikonin ,  Mikhail Vyacheslavovich Sosulnikov ,  Alexander Alexandrovich Karabutov ,  Timofey Mikhailovich Solovyev ,  Biao Wang ,  Elena Alexandrovna Alshina

IPC: H04N19/46 ,  H04N19/132

CPC classification number: H04N19/46 ,  H04N19/132

Abstract: The present disclosure relates to methods and apparatuses for encoding data for (still or video processing into a bitstream). In particular, the data are processed by a network which includes a plurality of cascaded layers. In the processing, feature maps are generated by the layers. The feature maps processed (output) by at least two different layers have different resolutions. In the processing, a layer is selected, out of the cascaded layers, which is different from the layer generating the feature map of the lowest resolution (e.g. latent space). The bitstream includes information related to the selected layer. With this approach, scalable processing which may operate on different resolutions is provided so that the bitstream may convey information relating to such different resolutions. Accordingly, the data may be efficiently coded within the bitstream, depending on the resolution which may vary depending on the content of the picture data coded.

公开(公告)号：US11438618B2

公开(公告)日：2022-09-06

申请号：US17013272

申请日：2020-09-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Alexander Alexandrovich Karabutov ,  Vasily Alexeevich Rufitskiy

IPC: H04N19/48 ,  H04N19/13 ,  H04N19/14 ,  H04N19/159 ,  H04N19/18 ,  H04N19/463 ,  H04N19/593 ,  H04N19/91 ,  H04N19/174 ,  H04N19/176 ,  H04N19/61 ,  H04N19/645

Abstract: The present disclosure provides embodiments for coding and decoding signs of transformation coefficients which is applicable, for instance, in image and/or video coding and decoding. In particular, a plurality of the signs are predicted and only a prediction error signal is embedded in the bitstream. The prediction error signal may have a distribution which can be efficiently coded with CABAC or another variable length (entropy) coding. In order to perform the prediction of the signs efficiently, the signs of a plurality of coefficients of a transformed image block are predicted based on a cost function including transformed difference between adjacent pixels neighboring the transformed image block and prediction of the adjacent pixels calculated based on a prediction signal of the image block.

公开(公告)号：US20220116597A1

公开(公告)日：2022-04-14

申请号：US17556180

申请日：2021-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sergey Yurievich Ikonin ,  Victor Alexeevich Stepin ,  Alexander Alexandrovich Karabutov

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/182 ,  H04N19/132 ,  H04N19/136

Abstract: A filter, to an encoder and a decoder using the filter, to a filtering method and a corresponding program, as well as to encoding and decoding using the filtering method or the filter. The method includes obtaining of an extended reconstructed block by extending the current reconstructed block to include at least padding samples from the current reconstructed block. After padding, a current pixel of the extended reconstructed block and its neighboring pixels are loaded into a linear buffer and transformed with a one-dimensional (1D) transform. The method is performed in frequency domain using a look-up table and the filtered pixels are transformed back.

公开(公告)号：US20220103822A1

公开(公告)日：2022-03-31

申请号：US17547169

申请日：2021-12-09

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

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

IPC: H04N19/124 ,  H04N19/186 ,  H04N19/196

Abstract: A method of obtaining quantization parameter (QP) for chrominance components based on QP for luminance component, wherein the method is performed by a decoder or encoder, and wherein the method comprises obtaining a luminance QP for a luma component of a coding unit; obtaining a QP index (QPi) based at least in a part on the luminance QP; and obtaining a chrominance QP (QPc) for a chroma component of the coding unit based on the QP index by using a preset lookup table, wherein the maximum difference between the QP index and the chrominance QP is equal to 3.

公开(公告)号：US11265535B2

公开(公告)日：2022-03-01

申请号：US17013094

申请日：2020-09-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Alexander Alexandrovich Karabutov ,  Vasily Alexeevich Rufitskiy

IPC: H04N19/105 ,  H04N19/129 ,  H04N19/176 ,  H04N19/18 ,  H04N19/64 ,  H04N19/91

Abstract: The present invention relates to an improved apparatus and method for harmonizing both Sign Bit Hiding (SBH) and Residual Sign Prediction (RSP) techniques in video coding. In order to improve coding efficiency, a list of transform coefficients, to which RSP is to be applied is prepared in advance of selecting a coefficient to which SBH is applied. Thereby, the RSP list can be populated in such a manner that the highest coding efficiency may be expected. Subsequently, one or more coefficients for applying SBH are selected so as not to be included in the list.

公开(公告)号：US12244806B2

公开(公告)日：2025-03-04

申请号：US17700904

申请日：2022-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: A method for inverse quantization of a current block of a picture, the method comprising: receiving a bitstream; obtaining a joint chrominance component residual, JCCR, control flag from the bitstream; obtaining a chrominance mapping information from the bitstream based on the JCCR control flag; obtaining at least one chrominance quantization parameter, QP, offset from the bitstream based on the JCCR control flag; obtaining a QP value for the current chrominance block based on the obtained chrominance mapping information and the at least one obtained chrominance QP offset; performing inverse quantization on the current chrominance block by using the obtained QP value.

公开(公告)号：US12206903B2

公开(公告)日：2025-01-21

申请号：US18371593

申请日：2023-09-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin ,  Alexander Alexandrovich Karabutov ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/107 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

Abstract: The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.