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公开(公告)号：US20240364871A1
公开(公告)日：2024-10-31
申请号：US18766070
申请日：2024-07-08
发明人： Bo-ra JIN , Min-woo PARK , Chan-yul KIM , Jung-hye MIN
IPC分类号： H04N19/105 , H04N19/119 , H04N19/129 , H04N19/137 , H04N19/176 , H04N19/44 , H04N19/51 , H04N19/52
CPC分类号： H04N19/105 , H04N19/119 , H04N19/129 , H04N19/137 , H04N19/176 , H04N19/44 , H04N19/51 , H04N19/52
摘要： Provided are a method and device for encoding or decoding an image by using a block map. In the method and device for decoding an image according to an embodiment set forth herein, a bitstream of an encoded image is received, one or more blocks in a picture are determined using split information obtained from the bitstream, a block map indicating whether or not a previous block among the one or more blocks has been decoded is determined, a neighboring region which is available to be referred to for a current block to be decoded in a certain scan order among the one or more blocks is determined, and the current block is decoded based on the neighboring region which is available to be referred to.
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公开(公告)号：US20240364868A1
公开(公告)日：2024-10-31
申请号：US18765963
申请日：2024-07-08
发明人： Bo-ra JIN , Min-woo Park , Chan-yul Kim , Jung-hye Min
IPC分类号： H04N19/105 , H04N19/119 , H04N19/129 , H04N19/137 , H04N19/176 , H04N19/44 , H04N19/51 , H04N19/52
CPC分类号： H04N19/105 , H04N19/119 , H04N19/129 , H04N19/137 , H04N19/176 , H04N19/44 , H04N19/51 , H04N19/52
摘要： Provided are a method and device for encoding or decoding an image by using a block map. In the method and device for decoding an image according to an embodiment set forth herein, a bitstream of an encoded image is received, one or more blocks in a picture are determined using split information obtained from the bitstream, a block map indicating whether or not a previous block among the one or more blocks has been decoded is determined, a neighboring region which is available to be referred to for a current block to be decoded in a certain scan order among the one or more blocks is determined, and the current block is decoded based on the neighboring region which is available to be referred to.
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公开(公告)号：US12132927B2
公开(公告)日：2024-10-29
申请号：US17219065
申请日：2021-03-31
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.
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公开(公告)号：US12132911B2
公开(公告)日：2024-10-29
申请号：US18197483
申请日：2023-05-15
申请人： Ofinno, LLC
IPC分类号： H04N19/137 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
CPC分类号： H04N19/137 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
摘要： A decoder receives, from a bitstream for a block vector (BV), an indication of a block vector predictor (BVP). The decoder determines a sign of a first component of a block vector difference (BVD) based on a component of the BV and a component of the BVP. The decoder decodes the BV based on the BVP and the BVD. The decoder generates an intra block compensated prediction of a current block (CB) based on the BV. The decoder decodes the CB based on the intra block compensated prediction and a residual of the CB.
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公开(公告)号：US12132910B2
公开(公告)日：2024-10-29
申请号：US17571434
申请日：2022-01-07
发明人： Xiaoyu Xiu , Yi-Wen Chen , Xianglin Wang , Bing Yu
IPC分类号： H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176
CPC分类号： H04N19/137 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
摘要： Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video decoding. The method includes dividing a video block to multiple non-overlapped video subblocks, dividing a video block to multiple non-overlapped video subblocks, obtaining a first reference picture I(0) and a second reference picture I(1), obtaining first prediction samples I(0)(i,j)'s, obtaining second prediction samples I(1)(i,j)'s, obtaining horizontal and vertical gradient values of the first prediction samples I(0)(i,j)'s and second prediction samples I(1)(i,j)'s, obtaining motion refinements for samples in the video subblock based on the BDOF when the video block is not coded in affine mode, obtaining motion refinements for samples in the video subblock based on the PROF when the video block is coded in affine mode, and obtaining prediction samples of the video block based on the motion refinements.
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公开(公告)号：US12132892B2
公开(公告)日：2024-10-29
申请号：US18381292
申请日：2023-10-18
申请人： LG Electronics Inc.
发明人： Naeri Park , Junghak Nam , Hyeongmoon Jang
IPC分类号： H04N19/105 , H04N19/109 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/52 , H04N19/527 , H04N19/577
CPC分类号： H04N19/105 , H04N19/109 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/52 , H04N19/527 , H04N19/577
摘要： According to a disclosure of the present document, when the type of inter-prediction of a current block is indicated as biprediction, weight index information for a candidate within a merge candidate list or a sub-block merge candidate list may be derived, and coding efficiency may be increased.
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公开(公告)号：US20240357076A1
公开(公告)日：2024-10-24
申请号：US18630359
申请日：2024-04-09
发明人： Huanbang CHEN , Han GAO , Haitao YANG
IPC分类号： H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/70
CPC分类号： H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/70
摘要： The disclosure relates to a method of coding implemented by a decoding device, comprising: obtaining a value of a maximum number of merging motion vector prediction, MVP, candidates for a current block, wherein the current block is predicted using intra block copy, IBC mode; setting a value of a MVP index to zero, when the value of the maximum number of MVP candidates for the current block is equal to one; obtaining a motion vector of the current block according to the MVP index and a candidate list; obtaining prediction samples values of the current block according to the motion vector of the current block.
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公开(公告)号：US12126809B2
公开(公告)日：2024-10-22
申请号：US18144574
申请日：2023-05-08
申请人： GoPro, Inc.
IPC分类号： H04N19/597 , H04N13/00 , H04N19/107 , H04N19/137 , H04N19/167 , H04N23/45 , H04N23/698
CPC分类号： H04N19/137 , H04N13/00 , H04N19/107 , H04N19/167 , H04N19/597 , H04N23/45 , H04N23/698
摘要： Encoded content is accessed. The encoded content includes an encoded first centrally located tile corresponding to a first centrally located tile of a first image, an encoded first peripherally located tile of the first image, and an encoded second peripherally located tile of a second image. The encoded first peripherally located tile is decoded to obtain a decoded first peripherally located tile. The encoded second peripherally located tile is decoded to obtain a decoded second peripherally located tile. The decoded first peripherally located tile and the decoded second peripherally located tile are stitched to obtain a stitched image portion. The stitched image portion is encoded to obtain an encoded stitched image portion. An encoded stitched image of the first image and the second image is obtained by combining the encoded first centrally located tile, and the encoded stitched image portion.
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公开(公告)号：US20240348811A1
公开(公告)日：2024-10-17
申请号：US18619028
申请日：2024-03-27
申请人： Tencent America LLC
发明人： Lien-Fei CHEN , Roman CHERNYAK , Xiaozhong XU , Xin ZHAO , Shan LIU
IPC分类号： H04N19/44 , H04N19/105 , H04N19/137 , H04N19/176
CPC分类号： H04N19/44 , H04N19/105 , H04N19/137 , H04N19/176
摘要： An example method of video decoding includes receiving video data that includes a current block from a video bitstream. The method also includes generating a subblock-based motion vector prediction (SbTMVP) for a subblock of the current block and generating a SbTMVP-MMVD candidate by applying a merge motion vector difference (MMVD) to the SbTMVP. In accordance with a determination that a motion vector (MV) of the SbTMVP-MMVD candidate meets one or more criteria, the SbTMVP-MMVD candidate is inserted into a candidate list for the current block. In accordance with a determination that the MV of the SbTMVP-MMVD candidate does not meet the one or more criteria, the SbTMVP-MMVD candidate is not inserted into the candidate list for the current block. The method further includes reconstructing the current block using the candidate list.
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公开(公告)号：US20240348808A1
公开(公告)日：2024-10-17
申请号：US18755515
申请日：2024-06-26
申请人： Snap Inc.
IPC分类号： H04N19/40 , H04L65/70 , H04L65/75 , H04N5/77 , H04N5/926 , H04N9/804 , H04N19/137 , H04N19/14 , H04N19/146 , H04N19/162 , H04N19/179 , H04N21/2662 , H04N21/4223 , H04N21/433 , H04N21/4402 , H04W88/18
CPC分类号： H04N19/40 , H04L65/70 , H04L65/762 , H04N5/77 , H04N5/9261 , H04N9/8042 , H04N19/137 , H04N19/14 , H04N19/146 , H04N19/162 , H04N19/179 , H04N21/2662 , H04N21/4223 , H04N21/4334 , H04N21/4402 , H04W88/181
摘要： Among other things, embodiments of the present disclosure improve the functionality of electronic messaging and imaging software and systems by automating the client-side transcoding of video data based on content. For example, an appropriate transcoding configuration can be selected for video data having complex motion or textures. Accordingly, video quality can be improve when complex motions or textures are present.
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