公开(公告)号：US20240163432A1

公开(公告)日：2024-05-16

申请号：US18422130

申请日：2024-01-25

申请人： JVCKENWOOD Corporation

发明人： Hiroyuki KURASHIGE

IPC分类号： H04N19/119 ,  H04N19/107 ,  H04N19/167 ,  H04N19/176

CPC分类号： H04N19/119 ,  H04N19/107 ,  H04N19/167 ,  H04N19/176

摘要： A block partitioner includes a quad splitter structured to partition a target block obtained by recursive partitioning in half in both a horizontal direction and a vertical direction to generate four blocks, and a binary/ternary splitter structured to partition the target block obtained by recursive partitioning into two or three in the horizontal direction or the vertical direction to generate two or three blocks, and the binary/ternary splitter disallows partitioning of the target block in the horizontal direction when partitioning of the target block in the horizontal direction causes the target block obtained by partitioning to be located beyond a right side of a picture boundary, and disallows partitioning of the target block in the vertical direction when partitioning of the target block in the vertical direction causes the target block obtained by partitioning to be located beyond a lower side of the picture boundary.

公开(公告)号：US11985315B2

公开(公告)日：2024-05-14

申请号：US17987220

申请日：2022-11-15

申请人： LG Electronics Inc.

发明人： Hyeongmoon Jang

IPC分类号： H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC分类号： H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

摘要： A method by which a decoding device decodes an image, according to the present document, comprises the steps of: receiving prediction mode information about a current block; receiving intra sub-partitions (ISP)-related information about the current block on the basis of the size and the maximum conversion block size of the current block; deriving an intra prediction mode of the current block on the basis of the prediction mode information; and generating a prediction sample of the current block on the basis of the intra prediction mode and the ISP-related information.

公开(公告)号：US11985314B2

公开(公告)日：2024-05-14

申请号：US17420837

申请日：2019-12-24

申请人： MEDIATEK INC.

发明人： Chia-Ming Tsai ,  Chih-Wei Hsu ,  Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shih-Ta Hsiang

IPC分类号： H04N19/119 ,  H04N19/169 ,  H04N19/176 ,  H04N19/96

CPC分类号： H04N19/119 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/96

摘要： Video processing methods and apparatuses in a video encoding or decoding system for processing out-of-bounds nodes in a current picture. An out-of-bounds node is a coding tree node with a block region across a current picture boundary. The video processing method or apparatus determines an inferred splitting type, applies the inferred splitting type to split the out-of-bounds node into child blocks, adaptively splits each child block into one or multiple leaf blocks, and encodes or decodes the leaf blocks in the out-of-bounds node inside the current picture. The inferred splitting type for partitioning out-of-bounds nodes in an inter slice, picture, or tile is the same as the inferred splitting type for partitioning out-of-bounds nodes in an intra slice, picture, or tile.

公开(公告)号：US20240155160A1

公开(公告)日：2024-05-09

申请号：US18280551

申请日：2021-03-10

申请人： GOOGLE LLC

发明人： Richard Xie ,  Ramachandra Tahasildar ,  Danny Hong ,  Alex Sukhanov ,  Albert Julius Liu ,  Beril Erkin

IPC分类号： H04N19/86 ,  A63F13/355 ,  H04N19/119 ,  H04N19/186

CPC分类号： H04N19/86 ,  A63F13/355 ,  H04N19/119 ,  H04N19/186 ,  A63F13/358

摘要： Real-time pre-encoding dithering techniques mitigate or eliminate banding and other graphical artifacts in video frames prior to such video frames being encoded for transmission to and display by one or more client devices. For each of one or more input video frames, one or more random seeds and a frame identifier are received, and a dithering process is initiated for each of one or more pixels of the input video frame. The dithering process includes generating a YUV noise vector based on the random seeds and on the frame identifier, computing a YUV representation of the input pixel based on RGB color information for the input pixel, and generating a dithered output pixel by adding the generated YUV noise vector to the YUV representation of the input pixel.

公开(公告)号：US11979580B2

公开(公告)日：2024-05-07

申请号：US18163666

申请日：2023-02-02

申请人： CANON KABUSHIKI KAISHA

发明人： Guillaume Laroche ,  Patrice Onno ,  Jonathan Taquet ,  Christophe Gisquet

IPC分类号： H04N19/137 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52

CPC分类号： H04N19/137 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52

摘要： The present disclosure concerns a method and a device for encoding or decoding video data. It concerns more particularly the encoding according to a particular encoding mode using a decoder side motion vector derivation mode referenced as frame-rate up conversion mode or FRUC mode. It concerns encoding and decoding improvement which reduce the need for memory accesses when using an encoding mode where the motion information is predicted using a decoder side motion vector derivation method.

公开(公告)号：US11979569B2

公开(公告)日：2024-05-07

申请号：US17897533

申请日：2022-08-29

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Minsoo Park ,  Minwoo Park ,  Kiho Choi ,  Yinji Piao ,  Seungsoo Jeong ,  Narae Choi ,  Woongil Choi ,  Anish Tamse

IPC分类号： H04N19/119 ,  H04N19/176

CPC分类号： H04N19/119 ,  H04N19/176

摘要： A video decoding method includes obtaining information indicating a first difference between a maximum size of a coding unit having a 1:4 ratio and a size of a largest coding unit, determining the maximum size of the coding unit of having the 1:4 ratio by using the size of the largest coding unit and the first difference, determining a minimum size of the coding unit having the 1:4 ratio based on a minimum size of a coding unit, determining whether a coding having the 1:4 ratio may be generated by splitting a first coding unit based on the maximum size and the minimum size of the coding unit having the 1:4 ratio, and determining a second coding unit including the coding unit having the 1:4 ratio, from the first coding unit, and decoding the second coding unit.

公开(公告)号：US11979562B2

公开(公告)日：2024-05-07

申请号：US18206771

申请日：2023-06-07

申请人： JVCKENWOOD Corporation

发明人： Hideki Takehara ,  Hiroya Nakamura ,  Satoru Sakazume ,  Shigeru Fukushima ,  Toru Kumakura ,  Hiroyuki Kurashige

IPC分类号： H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

摘要： A picture coding device for coding a moving picture using inter prediction based on inter prediction information in units of blocks into which each picture of moving pictures is divided and forming a bitstream, the picture coding device includes a coding information storage unit configured to add the inter prediction information used in the inter prediction to a history-based motion vector predictor candidate list in a FIFO scheme, a history-based motion vector predictor candidate derivation unit configured to derive history-based motion vector predictor candidates from the history-based motion vector predictor candidate list and add the history-based motion vector predictor candidates to a motion vector predictor candidate list as a motion vector predictor candidate, and a history-based merging candidate derivation unit configured to derive history-based merging candidates from the history-based motion vector predictor candidate list and add the history-based merging candidates to a merging candidate list as a merging candidate.

公开(公告)号：US20240146924A1

公开(公告)日：2024-05-02

申请号：US18545145

申请日：2023-12-19

申请人： HUAWEI TECHNOLOGIES CO., LTD.

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

IPC分类号： H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46

CPC分类号： H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46

摘要： The present disclosure provides a method of coding implemented by a decoding device, the method comprising: obtaining a value of a splitting mode index for a current coding block; obtaining a value of an angle index for the current coding block according to the value of the splitting mode index value and a pre-stored table; setting a value of an index partIdx according to the value of the angle index; and storing motion information for the current coding block according to the value of the index partIdx.

公开(公告)号：US20240146912A1

公开(公告)日：2024-05-02

申请号：US18408120

申请日：2024-01-09

申请人： Canon Kabushiki Kaisha

发明人： Christopher James Rosewarne

IPC分类号： H04N19/11 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/96

CPC分类号： H04N19/11 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/96

摘要： A method of decoding coding blocks of a coding tree unit for an image frame, from a bitstream. The method comprises determining a chroma format of the image frame, the chroma format having chroma channels of the image frame being subsampled relative to a luma channel of the image frame; and determining, based on the determined chroma format, a size of a chroma coding block of one of the chroma channels of the coding tree unit, wherein the chroma coding block is collocated with a plurality of corresponding luma blocks. The method comprises determining the chroma coding block is encoded using intra prediction if the determined size of the chroma block is a predetermined minimum chroma block size; and decoding the coding blocks of the coding tree using intra prediction for the chroma coding block and inter prediction for at least one of the plurality of corresponding luma coding blocks.

公开(公告)号：US11973942B2

公开(公告)日：2024-04-30

申请号：US18086272

申请日：2022-12-21

申请人： LG ELECTRONICS INC.

发明人： Hyeong Moon Jang ,  Jin Heo

IPC分类号： H04N19/119 ,  H04N19/11 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

CPC分类号： H04N19/11 ,  H04N19/119 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

摘要： An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise identifying a current chroma block by splitting an image, identifying whether a matrix based intra prediction mode applies to a first luma sample position corresponding to the current chroma block, identifying whether a predetermined prediction mode applies to a second luma sample position corresponding to the current chroma block, based on the matrix based intra prediction mode doing not apply, and determining an intra prediction mode candidate of the current chroma block based on an intra prediction mode applying to a third luma sample position corresponding to the current chroma block, based on the predetermined prediction mode doing not apply.