公开(公告)号：US20240388706A1

公开(公告)日：2024-11-21

申请号：US18785937

申请日：2024-07-26

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

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：US20230127009A1

公开(公告)日：2023-04-27

申请号：US17981153

申请日：2022-11-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Marat Ravilevich GILMUTDINOV ,  Elena Alexandrovna ALSHINA ,  Nickolay Dmitrievich EGOROV ,  Dmitry Vadimovich NOVIKOV ,  Anton Igorevich VESELOV ,  Kirill Aleksandrovich MALAKHOV ,  Nikita Vyacheslavovich USTIUZHANIN

IPC: G06V20/40 ,  G06V10/30 ,  G06V10/74 ,  G06V10/82 ,  H04N19/85

Abstract: The present disclosure relates to pre-processing of video images. In particular, the video images are pre-processed in an object-based manner, i.e., by applying different pre-processing to different objects detected in the image. Moreover, the pre-processing is applied to a group of images. As such, object detection is performed in a plurality of images and the pre-processing for the plurality of images may be adapted to the decoded images and is applied to the decoded images.

公开(公告)号：US20230087640A1

公开(公告)日：2023-03-23

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 ,  H04N19/82 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176

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：US20230082783A1

公开(公告)日：2023-03-16

申请号：US17946929

申请日：2022-09-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao WANG ,  Semih ESENLIK ,  Elena Alexandrovna ALSHINA ,  Anand Meher KOTRA ,  Han GAO

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/174

Abstract: A system and method of decoding of a video or picture bitstream implemented by a decoding device are described. The bitstream can include data representing a current video coding layer. Furthermore, when determining that the current video coding layer is the only one layer in the bitstream, the method can include using the identifier of a NAL unit of the current video coding layer as the identifier of the current video coding layer.

公开(公告)号：US20220394242A1

公开(公告)日：2022-12-08

申请号：US17870271

申请日：2022-07-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Roman Igorevich CHERNYAK ,  Timofey Mikhailovich SOLOVYEV ,  Sergey Yurievich IKONIN ,  Alexander Alexandrovich KARABUTOV ,  Elena Alexandrovna ALSHINA

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/70

Abstract: Reference picture management scheme is provided in the context of video coding. A method of decoding an encoded video sequence, comprising obtaining a value of a reference picture list (RPL) syntax element from a bitstream of the encoded video sequence, the RPL syntax element specifying whether syntax elements related to reference picture lists are present in the bitstream, when the RPL syntax element specifies that the syntax elements related to the reference picture lists are present in the bitstream, obtaining, from the bitstream, values of the syntax elements related to the reference picture lists; and constructing at least one reference picture list for inter prediction using the obtained values of the syntax elements related to the reference picture lists.

公开(公告)号：US20220345711A1

公开(公告)日：2022-10-27

申请号：US17849314

申请日：2022-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Elena Alexandrovna ALSHINA

IPC: H04N19/132 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70

Abstract: The disclosure relates to methods and a coding apparatus for intra prediction using a linear model. The method includes: determining a filter for a luma component of a current block based on a chroma format of a picture that the current block belongs to, and applying the determined filter to an area of reconstructed luma samples of the luma component of the current block and/or luma samples in selected position neighboring to the current block, to obtain filtered reconstructed luma samples. The method further includes: obtaining, based on the filtered reconstructed luma samples, linear model coefficients. Cross-component prediction is performed based on linear model coefficients of the linear model derivation and the filtered reconstructed luma sample.

公开(公告)号：US20220256141A1

公开(公告)日：2022-08-11

申请号：US17703661

申请日：2022-03-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Elena Alexandrovna ALSHINA

IPC: H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176

Abstract: It is provided a method for combined inter-intra prediction of a current block in video coding wherein combined intra-inter-prediction is used for providing a prediction block and wherein the weights for the intra- and inter-prediction blocks used to obtain the prediction block can be finely tuned. In particular, the method comprises determining prediction information for a neighboring block adjacent to the current block, the prediction information comprising a prediction mode used for prediction of the neighboring block, determining whether matrix-based intra prediction, MIP, is to be used for the prediction of the current block and predicting the current block as a weighted sum of an intra-predicted block and an inter-predicted block, wherein weights of the inter-predicted block and the intra-predicted block are determined based on the prediction information for the neighboring block and the determining whether MIP is to be used for the prediction of the current block.

公开(公告)号：US20220232226A1

公开(公告)日：2022-07-21

申请号：US17703006

申请日：2022-03-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Semih ESENLIK ,  Han GAO ,  Elena Alexandrovna ALSHINA

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/119 ,  H04N19/503

Abstract: A method includes: obtaining one or more parameters of a geometric merge (GEO) inter prediction mode for a current coding block; defining a size of a subblock that is smaller than a size of the current coding block; specifying a position of the subblock within the current coding block, so that either two or three sides of the subblock coincide with sides of the current coding block; determining one or more allowed split directions of a triangle partitioning mode (TPM) for the subblock depending on which of the sides of the subblock coincide with the sides of the current coding block; and obtaining one or more predicted samples for the current coding block by using the TPM partitioning performed for the subblock in accordance with the size of the subblock, the position of the subblock within the current coding block and a TPM split direction of the subblock.

公开(公告)号：US20220201336A1

公开(公告)日：2022-06-23

申请号：US17687384

申请日：2022-03-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Elena Alexandrovna ALSHINA

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: The present disclosure provides an encoding method, wherein the method comprises: determining syntax elements to be coded, wherein the syntax elements include a reference picture list structure and at least one high-level syntax (HLS) weighted prediction parameters; coding the at least one HLS weighted prediction parameters; and after coding the at least one HLS weighted prediction parameters, coding the reference picture list structure. The syntax elements are reordered such that coding the reference picture list structure can be based on values of the at least one HLS weighted prediction parameters.

公开(公告)号：US20220070462A1

公开(公告)日：2022-03-03

申请号：US17509324

申请日：2021-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sergey Yurievich IKONIN ,  Roman Igorevich CHERNYAK ,  Timofey Mikhailovich SOLOVYEV ,  Alexander Alexandrovich KARABUTOV ,  Jianle CHEN ,  Elena Alexandrovna ALSHINA

IPC: H04N19/126 ,  H04N19/132 ,  H04N19/44 ,  H04N19/186

Abstract: A method of obtaining a chrominance quantization parameter (QP) for chrominance components based on a luminance QP for luminance component, wherein the method is performed by a decoder, comprising parsing a received bitstream to obtain the luminance QP and information of a mapping function (ƒ) which associates a QP index (QPi) to the chrominance QP (QPc); obtaining the QPi based at least in a part on the luminance QP; obtaining the mapping function based on the obtained information; and obtaining a QPc based on the obtained mapping function and the obtained QPi.