公开(公告)号：US20240364896A1

公开(公告)日：2024-10-31

申请号：US18767539

申请日：2024-07-09

申请人： LG Electronics Inc.

发明人： Seungwook PARK ,  Joonyoung PARK ,  Jungsun KIM ,  Younghee CHOI ,  Yongjoon JEON ,  Jaewon SUNG ,  Byeongmoon JEON ,  Jaehyun LIM

IPC分类号： H04N19/139 ,  H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/51 ,  H04N19/513 ,  H04N19/56 ,  H04N19/61 ,  H04N19/96

CPC分类号： H04N19/139 ,  H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/51 ,  H04N19/521 ,  H04N19/56 ,  H04N19/61 ,  H04N19/96

摘要： The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.

公开(公告)号：US12132927B2

公开(公告)日：2024-10-29

申请号：US17219065

申请日：2021-03-31

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Taichiro Shiodera ,  Saori Asaka ,  Akiyuki Tanizawa ,  Takeshi Chujoh

IPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/109 ,  H04N19/119 ,  H04N19/124 ,  H04N19/137 ,  H04N19/139 ,  H04N19/15 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

CPC分类号： H04N19/521 ,  H04N19/105 ,  H04N19/109 ,  H04N19/119 ,  H04N19/124 ,  H04N19/137 ,  H04N19/139 ,  H04N19/15 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

摘要： According to one embodiment, an image encoding method includes selecting a motion reference block from an already-encoded pixel block. The method includes selecting an available block including different motion information from the motion reference block, and selecting a selection block from the available block. The method includes generating a predicted image of the encoding target block using motion information of the selection block. The method includes encoding a prediction error between the predicted image and an original image. The method includes encoding selection information identifying the selection block by referring to a code table decided according to a number of the available block.

公开(公告)号：US20240357175A1

公开(公告)日：2024-10-24

申请号：US18302625

申请日：2023-04-18

申请人： NVIDIA Corporation

发明人： Yongmao Tang ,  Jianjun Chen ,  Junan Chen ,  Yonghai Wu ,  Zejun Hu ,  Wei Feng

IPC分类号： H04N19/61 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/139 ,  H04N19/156 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/423

CPC分类号： H04N19/61 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/139 ,  H04N19/156 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/423

摘要： Disclosed are systems and techniques for efficient real-time codec encoding of video files. In one embodiment, the techniques include obtaining a first plurality of motion vectors of a first resolution, generating a second plurality of motion vectors of a second resolution, and calculating a first cost of the motion vector using a first cost function of a first size. The techniques include selecting a subset of motion vectors of the second plurality of motion vectors, calculating a second cost using a second cost function of a second size, and generating a plurality of combined motion vectors based on the subset of motion vectors. The techniques include calculating a third cost using the second cost function of the second size, selecting a final motion vector, and generating, based on the selected final motion vector, a block of predicted pixels that approximates a block of source pixels of an image frame.

公开(公告)号：US20240353796A1

公开(公告)日：2024-10-24

申请号：US18638918

申请日：2024-04-18

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Min Sik PARK ,  Joong Ki PARK

IPC分类号： G03H1/16 ,  G03H1/08 ,  H04N19/61 ,  H04N19/70

CPC分类号： G03H1/16 ,  G03H1/0808 ,  H04N19/61 ,  H04N19/70 ,  G03H2225/32

摘要： A method and apparatus for compressing hologram is disclosed. The apparatus includes memory to store one or more instructions, and one or more processors to execute the one or more instructions in the memory, wherein the one or more processors perform generating phase wavefront blocks using a frame of a phase-only hologram, generating a first prediction wavefront block using one of the phase wavefront blocks, generating a differential wavefront block using a phase wavefront block and the first prediction wavefront block, transforming and quantizing the differential wavefront block, generating a restored differential wavefront block by inversely quantizing and inversely transforming the differential wavefront block transformed and quantized, generating a restored phase wavefront block using the restored differential wavefront block, generating a restored phase wavefront using restored phase wavefront blocks generated using the restored differential wavefront blocks, and restoring the phase-only hologram using the restored phase wavefront.

公开(公告)号：US12126832B2

公开(公告)日：2024-10-22

申请号：US18147082

申请日：2022-12-28

申请人： V-NOVA INTERNATIONAL LIMITED

发明人： Guido Meardi

IPC分类号： H04N19/00 ,  H04N19/105 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/33 ,  H04N19/36 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

CPC分类号： H04N19/61 ,  H04N19/105 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/33 ,  H04N19/36 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

摘要： There is disclosed a method of encoding an input signal, the method comprising: receiving a base encoded signal, the base encoded signal being generated by feeding an encoder with a down-sampled version of an input signal; producing a first residual signal by: decoding the base encoded signal to produce a first decoded signal; and using a difference between the base decoded signal and the down-sampled version of the input signal to produce the first residual signal; producing a second residual signal by: correcting the base decoded signal using the residual signal to create a corrected decoded version; up-sampling the corrected decoded version; and using a difference between the up-sampled corrected decoded signal and the input signal to produce the second residual signal; wherein the up-sampling is one of bilinear or bicubic up-sampling. A corresponding decoding method is also disclosed.

公开(公告)号：US12126831B2

公开(公告)日：2024-10-22

申请号：US17947047

申请日：2022-09-16

申请人： LG ELECTRONICS INC.

发明人： Moonmo Koo ,  Jaehyun Lim ,  Seunghwan Kim

IPC分类号： H04N11/02 ,  H04N19/119 ,  H04N19/124 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/61

CPC分类号： H04N19/61 ,  H04N19/119 ,  H04N19/124 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46

摘要： An image decoding method according to the present document comprises the steps of: receiving a quantized transform coefficient for a target block and a transform index for non-separable quadratic transform; deriving transform coefficients by inversely quantizing the quantized transform coefficient; deriving corrected transform coefficients on the basis of a transform kernel matrix in a predetermined transform set indicated by the transform index; and deriving residual samples for the target block on the basis of inverse linear transform for the corrected transform coefficients, wherein when the target block is divided into a predetermined number of sub-blocks and is coded by intra prediction, the corrected transform coefficients are derived in units of the sub-blocks, and the transform index is received for the target block.

公开(公告)号：US12126819B2

公开(公告)日：2024-10-22

申请号：US18509398

申请日：2023-11-15

申请人： Sharp Kabushiki Kaisha

发明人： Tomoko Aono ,  Tomohiro Ikai

IPC分类号： H04N19/176 ,  H04N19/122 ,  H04N19/159 ,  H04N19/18 ,  H04N19/61

CPC分类号： H04N19/176 ,  H04N19/122 ,  H04N19/159 ,  H04N19/18 ,  H04N19/61

摘要： A device is provided with: a first transformer which transforms an coding unit (CU); and a second transformer which transforms a part of first transform coefficients output from the first transformer, wherein the second transformer transforms at least any of the first transform coefficients for a region (first region) having different sizes in a horizontal direction and a vertical direction or the first transform coefficients for a non-rectangular region (second region).

公开(公告)号：US12120351B2

公开(公告)日：2024-10-15

申请号：US16246134

申请日：2019-01-11

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Santiago De Luxán Hernández ,  Detlev Marpe ,  Klaus-Robert Mueller ,  Heiko Schwarz ,  Thomas Wiegand

IPC分类号： H04N19/61 ,  H04N19/12 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/625

CPC分类号： H04N19/61 ,  H04N19/12 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/625

摘要： The coding efficiency of predictive picture codecs using transform-based residual coding is enhanced by allowing the codec to switch between a set of transforms for the sake of the transform-based residual coding. It turned out that even when using explicit signaling from encoder to decoder in order to signal the actual transform to be used out of the set of transforms from encoder to decoder, an increase in coding efficiency may result. Alternatively, the switching between the set of transforms may be performed without explicit signaling at all, or using a combination of explicit signaling and some sort of prediction of the switching.

公开(公告)号：US20240340453A1

公开(公告)日：2024-10-10

申请号：US18745113

申请日：2024-06-17

申请人： INTERDIGITAL VC HOLDINGS, INC.

发明人： Yang HU ,  Joel SOLE ,  Xiaoan LU ,  Peng YIN ,  Yunfei ZHENG

IPC分类号： H04N19/60 ,  H03M7/40 ,  H04N19/13 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

CPC分类号： H04N19/60 ,  H03M7/4006 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

摘要： Methods and apparatus are provided for improved entropy encoding and decoding. An apparatus includes a video encoder (200) for encoding at least a block in a picture by transforming a residue of the block to obtain transform coefficients, quantizing the transform coefficients to obtain quantized transform coefficients, and entropy coding the quantized transform coefficients. The quantized transform coefficients are encoded using a flag to indicate that a current one of the quantized transform coefficients being processed is a last non-zero coefficient for the block having a value greater than or equal to a specified value.

公开(公告)号：US20240333976A1

公开(公告)日：2024-10-03

申请号：US18742676

申请日：2024-06-13

申请人： LG ELECTRONICS INC.

发明人： Ling Lee ,  Jung Hak NAM

IPC分类号： H04N19/61 ,  H04N19/11 ,  H04N19/119 ,  H04N19/122 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186

CPC分类号： H04N19/61 ,  H04N19/11 ,  H04N19/119 ,  H04N19/122 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186

摘要： An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include determining a prediction mode of a current block, generating a prediction block of the current block based on intra block copy (IBC) prediction mode information, based on the prediction mode of the current block being an IBC prediction mode, determining a size of a transform block of the current block based on a color component of the current block, generating a residual block of the current block based on the size of the transform block; and reconstructing the current block based on the prediction block and the residual block of the current block.