公开(公告)号：US20240364935A1

公开(公告)日：2024-10-31

申请号：US18768492

申请日：2024-07-10

申请人： Microsoft Technology Licensing, LLC

发明人： Gary J. Sullivan

IPC分类号： H04N19/70 ,  H04N19/103 ,  H04N19/15 ,  H04N19/172 ,  H04N19/184 ,  H04N19/31 ,  H04N19/44 ,  H04N19/46 ,  H04N19/88

CPC分类号： H04N19/70 ,  H04N19/103 ,  H04N19/15 ,  H04N19/172 ,  H04N19/31 ,  H04N19/44 ,  H04N19/46 ,  H04N19/88 ,  H04N19/184

摘要： Techniques and tools for reducing latency in video encoding and decoding by constraining latency due to reordering of video frames, and by indicating the constraint on frame reordering latency with one or more syntax elements that accompany encoded data for the video frames. For example, a real-time communication tool with a video encoder sets a syntax element that indicates a constraint on frame reordering latency, which is consistent with inter-frame dependencies between multiple frames of a video sequence, then outputs the syntax element. A corresponding real-time communication tool with a video decoder receives the syntax element that indicates the constraint on frame reordering latency, determines the constraint on frame reordering latency based on the syntax element, and uses the constraint on frame reordering latency to determine when a reconstructed frame is ready for output (in terms of output order).

公开(公告)号：US20240364861A1

公开(公告)日：2024-10-31

申请号：US18766977

申请日：2024-07-09

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： Yago SÁNCHEZ DE LA FUENTE ,  Karsten SÜHRING ,  Cornelius HELLGE ,  Thomas SCHIERL ,  Robert SKUPIN ,  Thomas WIEGAND

IPC分类号： H04N19/103 ,  H04N19/159 ,  H04N19/30 ,  H04N19/503 ,  H04N19/70

CPC分类号： H04N19/103 ,  H04N19/159 ,  H04N19/30 ,  H04N19/503 ,  H04N19/70

摘要： The present invention is concerned with methods, encoders, decoders and data streams for coding pictures, and in particular a consecutive sequence of pictures. Some embodiments may exploit the so-called Gradual Decoder Refresh—GDR—coding scheme for coding the pictures. Some embodiments may suggest Scalable Coding and Gradual Decoder Refresh improvements.

公开(公告)号：US20240357074A1

公开(公告)日：2024-10-24

申请号：US18751643

申请日：2024-06-24

申请人： KT CORPORATION

发明人： Bae Keun LEE

IPC分类号： H04N19/103 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593

CPC分类号： H04N19/103 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593

摘要： An image decoding method according to the present invention comprises the steps of: deriving most probable mode (MPM) candidates on the basis of an intra-prediction mode of candidate blocks; determining whether the MPM candidate having the intra-prediction mode, which is the same as that of a current block, exists among MPM candidates; and deriving the intra-prediction mode of the current block on the basis of the determination, wherein the candidate block includes a neighboring block which is adjacent to the current block, and a non-neighboring block which is not adjacent to the current block.

公开(公告)号：US20240340539A1

公开(公告)日：2024-10-10

申请号：US18733854

申请日：2024-06-05

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek KIM

IPC分类号： H04N23/698 ,  G06T3/40 ,  H04N19/103 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51 ,  H04N19/625

CPC分类号： H04N23/698 ,  G06T3/40 ,  H04N19/103 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51 ,  H04N19/625

摘要： A method of decoding an image, includes obtaining at least one offset for a picture, deriving a variable for scaling for the picture based on the at least one offset, and performing inter prediction based on the variable for scaling for the picture. The at least one offset is defined with a direction of scaling.

公开(公告)号：US20240323541A1

公开(公告)日：2024-09-26

申请号：US18734645

申请日：2024-06-05

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek KIM

IPC分类号： H04N23/698 ,  G06T3/40 ,  H04N19/103 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/625

CPC分类号： H04N23/698 ,  G06T3/40 ,  H04N19/103 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/625 ,  H04N19/45

摘要： Disclosed are methods and apparatuses for image data encoding/decoding. A method for decoding a 360-degree image includes the steps of: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; adding the generated prediction image to a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Therefore, the performance of image data compression can be improved.

公开(公告)号：US20240314284A1

公开(公告)日：2024-09-19

申请号：US18673250

申请日：2024-05-23

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek KIM

IPC分类号： H04N13/161 ,  G06T3/40 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/597 ,  H04N19/625 ,  H04N19/70 ,  H04N23/698

CPC分类号： H04N13/161 ,  G06T3/40 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/597 ,  H04N19/625 ,  H04N19/70 ,  H04N23/698

摘要： Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.

公开(公告)号：US12096126B2

公开(公告)日：2024-09-17

申请号：US18404062

申请日：2024-01-04

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek Kim

IPC分类号： H04N19/11 ,  G06T3/40 ,  H04N19/103 ,  H04N19/159 ,  H04N19/176 ,  H04N19/597 ,  H04N19/70 ,  H04N23/698

CPC分类号： H04N23/698 ,  G06T3/40 ,  H04N19/103 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/597 ,  H04N19/70

摘要： A method for decoding a 360-degree image includes: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; combining the generated prediction image with a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Here, generating the prediction image includes: checking, from the syntax information, prediction mode accuracy for a current block to be decoded; determining whether the checked prediction mode accuracy corresponds to most probable mode (MPM) information obtained from the syntax information; and when the checked prediction mode accuracy does not correspond to the MPM information, reconfiguring the MPM information according to the prediction mode accuracy for the current block.

公开(公告)号：US12096043B2

公开(公告)日：2024-09-17

申请号：US18298711

申请日：2023-04-11

申请人： KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY ,  KOREAN BROADCASTING SYSTEM

发明人： Mun Churl Kim ,  Bum Shik Lee ,  Jae Il Kim ,  Chang Seob Park ,  Sang Jin Hahm ,  In Joon Cho ,  Keun Sik Lee ,  Byung Sun Kim

IPC分类号： H04N19/86 ,  H04N19/103 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/13 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/80 ,  H04N19/172 ,  H04N19/174 ,  H04N19/182

CPC分类号： H04N19/86 ,  H04N19/103 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/13 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/80 ,  H04N19/172 ,  H04N19/174 ,  H04N19/182

摘要： Disclosed are a method of encoding a division block in video encoding and a method of decoding a division block in video decoding. An input picture is divided into encoding unit blocks. The encoding unit blocks are divided into sub-blocks. The sub-blocks are encoded by selectively using at least one of intra prediction encoding and inter prediction encoding. A decoding process is performed through a reverse process of the encoding method. When pixel values of an encoding unit block are encoded in video encoding, the flexibility in selecting an encoding mode is increased and the efficiency of encoding is increased.

公开(公告)号：US20240305764A1

公开(公告)日：2024-09-12

申请号：US18654669

申请日：2024-05-03

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek KIM

IPC分类号： H04N13/161 ,  G06T3/40 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/597 ,  H04N19/625 ,  H04N19/70 ,  H04N23/698

CPC分类号： H04N13/161 ,  G06T3/40 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/597 ,  H04N19/625 ,  H04N19/70 ,  H04N23/698

摘要： Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.

公开(公告)号：US20240297989A1

公开(公告)日：2024-09-05

申请号：US18589777

申请日：2024-02-28

申请人： QUALCOMM Incorporated

发明人： Han Huang ,  Cheng-Teh Hsieh ,  Nan Hu ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/117 ,  H04N19/103 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176

CPC分类号： H04N19/117 ,  H04N19/103 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176

摘要： A device for decoding video data can be configured to determine a prediction block for a current block of the video data; determine a residual block for the current block of the video data; process residual data of the residual block to determine processed residual data; store the processed residual data; add the prediction block to the residual block to determine a reconstructed block; and perform adaptive loop filtering (ALF) on the reconstructed block, based on the processed residual data.