公开(公告)号：US20240259584A1

公开(公告)日：2024-08-01

申请号：US18630834

申请日：2024-04-09

申请人： Electronics and Telecommunications Research Institute

发明人： Sung Chang LIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Suk Hee CHO ,  Dong San JUN ,  Jong Ho KIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC分类号： H04N19/513 ,  H04N19/426 ,  H04N19/44 ,  H04N19/61

CPC分类号： H04N19/513 ,  H04N19/426 ,  H04N19/44 ,  H04N19/61

摘要： The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.

公开(公告)号：US20240259578A1

公开(公告)日：2024-08-01

申请号：US18619448

申请日：2024-03-28

申请人： BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO, LTD.

发明人： Che-Wei Kuo ,  Xiaoyu XIU ,  Wei Chen ,  Xianglin Wang ,  Yi-Wen Chen ,  Hong-Jheng Jhu ,  Ning Yan ,  Bing Yu

IPC分类号： H04N19/44 ,  H04N19/117 ,  H04N19/124 ,  H04N19/82

CPC分类号： H04N19/44 ,  H04N19/117 ,  H04N19/124 ,  H04N19/82

摘要： Method and devices are provided for video coding. In the method, a decoder obtains a cross-component sample adaptive offset (CCSAO) quantization associated with an offset quantization control syntax and a quantization step size that are predefined or indicated by an encoder at at least one level. Furthermore, the decoder obtains a CCSAO based on the CCSAO quantization and adds the CCSAO to a reconstructed sample for prediction.

公开(公告)号：US12052431B2

公开(公告)日：2024-07-30

申请号：US17889061

申请日：2022-08-16

申请人： TENCENT AMERICA LLC

发明人： Byeongdoo Choi ,  Stephan Wenger ,  Shan Liu

IPC分类号： H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/169 ,  H04N19/172 ,  H04N19/33 ,  H04N19/46

CPC分类号： H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/1883 ,  H04N19/33 ,  H04N19/46

摘要： A method, device, and non-transitory computer-readable medium for decoding an encoded video bitstream using at least one processor, including, obtaining from the encoded video bitstream a first flag indicating that reference picture resampling is enabled for coded video sequence (CVS); determining a value of a second flag indicating whether a picture resolution is changed in the CVS; based on the value of the second flag indicating that the picture resolution is changed in the CVS, decoding the CVS using the reference picture resampling for spatial scalability and adaptive resolution change (ARC); and based on the value of the second flag indicating that the picture resolution is not changed in the CVS, decoding the CVS using the reference picture resampling for the spatial scalability, and without using the reference picture resampling for the ARC.

公开(公告)号：US12047593B2

公开(公告)日：2024-07-23

申请号：US17234507

申请日：2021-04-19

申请人： TENCENT AMERICA LLC

发明人： Liang Zhao ,  Xin Zhao ,  Madhu Peringassery Krishnan ,  Shan Liu

IPC分类号： H04N19/44 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/60

CPC分类号： H04N19/44 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/60

摘要： Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. The processing circuitry decodes from a coded video bitstream, transform coefficients associated with a coding block that is a non rectangular partition of a picture. Further, the processing circuitry determines residuals of the coding block based on the transform coefficients, and reconstructs samples of the coding block based on the residuals of the coding block.

公开(公告)号：US20240244265A1

公开(公告)日：2024-07-18

申请号：US18433946

申请日：2024-02-06

申请人： QUALCOMM Incorporated

发明人： Hongtao Wang ,  Venkata Meher Satchit Anand Kotra ,  Jianle Chen ,  Marta Karczewicz ,  Dana Kianfar ,  Auke Joris Wiggers

IPC分类号： H04N19/70 ,  H04N19/172 ,  H04N19/192 ,  H04N19/44 ,  H04N19/80

CPC分类号： H04N19/70 ,  H04N19/172 ,  H04N19/192 ,  H04N19/44 ,  H04N19/80

摘要： An example device for filtering decoded video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: decode a picture of video data; code a value for a syntax element representing a neural network model to be used to filter a portion of the decoded picture, the value representing an index into a set of pre-defined neural network models, the index corresponding to the neural network model in the set of pre-defined neural network models; and filter the portion of the decoded picture using the neural network model corresponding to the index.

公开(公告)号：US20240244244A1

公开(公告)日：2024-07-18

申请号：US18618802

申请日：2024-03-27

申请人： Bytedance Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/44

CPC分类号： H04N19/44

摘要： Embodiments of the present disclosure provide a solution for media data transmission. A method for media data transmission is proposed. The method comprises: receiving, at a first device, a metadata file from a second device; and determining, from the metadata file, an indication for indicating whether a first set of coded video data units representing a target picture-in-picture region in a first video is replaceable by a second set of coded video data units in a second video.

公开(公告)号：US20240244209A1

公开(公告)日：2024-07-18

申请号：US18618468

申请日：2024-03-27

申请人： Velos Media, LLC

发明人： Kiran MISRA ,  Christopher SEGALL

IPC分类号： H04N19/13 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/577 ,  H04N19/70 ,  H04N19/157

CPC分类号： H04N19/13 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/577 ,  H04N19/70 ,  H04N19/157

摘要： Technique for initialization of encoders and decoders. In some cases, the decoder receives a slice and identifies if the slice is either a forward predicted B-slice or a backward predicted B-slice, and not both a forward and backward predicted B-slice, and based upon this identification initializes, using a P-slice technique, a context associated with the slice.

公开(公告)号：US12041260B2

公开(公告)日：2024-07-16

申请号：US17976556

申请日：2022-10-28

申请人： Tencent America LLC

发明人： Xiaozhong Xu ,  Shan Liu

IPC分类号： H04N19/50 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44

CPC分类号： H04N19/50 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44

摘要： Aspects of the disclosure provide a method and an apparatus including processing circuitry that decodes prediction information indicating a cross-component linear model (CCLM) mode being applied to a chroma block in a current picture. For a first region in the chroma block, the processing circuitry determines a first adjustment value used to modify an offset parameter in the CCLM mode based on a first subset of reconstructed samples in a luma block collocated with the chroma block. The first subset of the reconstructed samples does not include one or more samples in the luma block. The processing circuitry updates the offset parameter based on the first adjustment value. The processing circuitry determines a second adjustment value used to modify a slope parameter in the CCLM mode based on a second subset of the reconstructed samples in the luma block and updates the slope parameter based on the second adjustment value.

公开(公告)号：US20240236359A1

公开(公告)日：2024-07-11

申请号：US18517815

申请日：2023-11-22

申请人： CANON KABUSHIKI KAISHA

发明人： Guillaume LAROCHE ,  Christophe GISQUET ,  Patrice ONNO ,  Jonathan TAQUET

IPC分类号： H04N19/513 ,  H04N19/13 ,  H04N19/44 ,  H04N19/70

CPC分类号： H04N19/513 ,  H04N19/13 ,  H04N19/44 ,  H04N19/70

摘要： A method of encoding a motion information predictor index for an Affine Merge mode, comprising: generating a list of motion information predictor candidates; selecting one of the motion information predictor candidates in the list as an Affine Merge mode predictor; and generating a motion information predictor index for the selected motion information predictor candidate using CABAC coding, one or more bits of the motion information predictor index being bypass CABAC coded.

公开(公告)号：US20240236349A9

公开(公告)日：2024-07-11

申请号：US18381508

申请日：2023-10-18

申请人： Tencent America LLC

发明人： Xin ZHAO ,  Guichun LI ,  Lien-Fei CHEN ,  Shan LIU

IPC分类号： H04N19/44 ,  H04N19/11 ,  H04N19/12 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/44 ,  H04N19/11 ,  H04N19/12 ,  H04N19/159 ,  H04N19/176

摘要： Aspects of the disclosure include methods and apparatuses for video coding. One of the apparatuses includes processing circuitry that receives a current block in a bitstream. The current block is predicted with intra prediction fusion comprising multiple candidate intra prediction modes. The processing circuitry derives a dominant intra prediction mode from the multiple candidate intra prediction modes. The processing circuitry applies a transform from a transform set associated with the dominant intra prediction mode for the current block and decodes the current block according to the transform.