公开(公告)号：US12069289B2

公开(公告)日：2024-08-20

申请号：US17692638

申请日：2022-03-11

申请人： HFI Innovation Inc.

发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Zhi-Yi Lin

IPC分类号： H04N19/513 ,  H04N19/139 ,  H04N19/176

CPC分类号： H04N19/513 ,  H04N19/139 ,  H04N19/176

摘要： A method and apparatus for coding system receives input data related to a current block in a current picture at a video encoder side or a video bitstream corresponding to compressed data including the current block at a video decoder side; determines one or more MVs (motion vectors) associated with a target Inter coding tool for the current block at the video encoder side or at the video decoder side, applies a same conversion process to said one or more MVs to generate one or more converted MVs at the video encoder side or at the video decoder side when the target Inter coding tool belongs to at least two tools of a group; and encodes the current block or motion information of the current block using said one more converted MVs at the video encoder side.

公开(公告)号：US11973958B2

公开(公告)日：2024-04-30

申请号：US17762317

申请日：2020-09-22

申请人： HFI Innovation Inc.

发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Zhi-Yi Lin

IPC分类号： H04N19/137 ,  H04N19/132 ,  H04N19/176 ,  H04N19/182

CPC分类号： H04N19/137 ,  H04N19/132 ,  H04N19/176 ,  H04N19/182

摘要： Methods and apparatus of video coding using sub-block based affine mode are disclosed. According to this method, control-point motion vectors (MVs) associated with the affine mode are determined for a block. A sub-block MV is derived for a target sub-block of the block from the control-point MVs for the block. A prediction offset is determined for a target pixel of the target sub-block using information comprising a pixel MV offset from the sub-block MV for the target pixel according to Prediction Refinement with Optical Flow (PROF). The target pixel of the target sub-block is encoded or decoded using a modified predictor. The modified prediction is generated by clipping the prediction offset to a target range and combining the clipped prediction offset with an original predictor.

公开(公告)号：US11765384B2

公开(公告)日：2023-09-19

申请号：US17391983

申请日：2021-08-02

申请人： HFI INNOVATION INC.

发明人： Ching-Yeh Chen ,  Tzu-Der Chuang ,  Yu-Wen Huang

IPC分类号： H04N19/577 ,  H04N19/159 ,  H04N19/513 ,  H04N19/182 ,  H04N19/46 ,  H04N19/537 ,  H04N19/105 ,  H04N19/52 ,  H04N19/186

CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/159 ,  H04N19/182 ,  H04N19/46 ,  H04N19/513 ,  H04N19/537 ,  H04N19/186 ,  H04N19/52

摘要： Methods and apparatus of motion compensation using the bi-directional optical flow (BIO) techniques are disclosed. According to one method of the present invention, the BIO process is applied to encode or decode bi-directional current block in Merge mode only or in AMVP (advanced motion vector prediction) mode only. According to another method, the BIO process conditionally to encode or decode the current block depending on a jointly-coded flag if the current block is coded using a bi-prediction mode. According to yet another method, x-offset value vx and y-offset value vy for the current block are added to the current motion vector to form a final motion vector. The final motion vector is then used as a reference motion vector for following blocks. In still yet another method, the BIO process is applied to the chroma component.

公开(公告)号：US11044479B2

公开(公告)日：2021-06-22

申请号：US16679650

申请日：2019-11-11

申请人： HFI Innovation Inc.

发明人： Tzu-Der Chuang ,  Jungsun Kim ,  Yu-Chen Sun ,  Wang-Lin Lai ,  Ching-Yeh Chen ,  Jing Ye ,  Shan Liu

IPC分类号： H04N19/593 ,  H04N19/103 ,  H04N19/11 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/426 ,  H04N19/44 ,  H04N19/625

摘要： Methods for coding syntax related to palette coding generated in a video coding system are disclosed. According to one embodiment, the current block size checked against the pre-defined block size. If the current block size is larger than the pre-defined block size, a current coding mode is selected from a coding group excluding a palette coding mode. If the current block size is smaller than or equal to the pre-defined block size, the current coding mode is selected from a coding group including the palette coding mode. In another embodiment, if the current block size is greater than a maximum transform size, a current coding mode is selected from a coding group excluding a palette coding mode. If the current block size is smaller than or equal to the maximum transform size, the current coding mode is selected from a coding group including the palette coding mode.

公开(公告)号：US10666974B2

公开(公告)日：2020-05-26

申请号：US15524369

申请日：2015-11-12

申请人： HFI Innovation Inc.

发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Chen Sun ,  Jing Ye ,  Shan Liu ,  Xiaozhong Xu ,  Jungsun Kim

IPC分类号： H04N19/157 ,  H04N19/169 ,  H04N19/46 ,  H04N19/593 ,  H04N19/70 ,  H04N19/463 ,  H04N19/426 ,  H04N19/93 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44

摘要： A method of video coding with reduced implementation cost by reusing transform coefficient buffer palette for palette coding is disclosed. If the current prediction mode is an Intra prediction mode or the Inter prediction mode, information related to transform coefficients for prediction residual of the current block resulted from Intra prediction or Inter prediction is stored in the transform coefficient buffer. If the current prediction mode is the palette coding mode, information related to palette data associated with the current block is stored in the transform coefficient buffer. The current block is then encoded or decoded based on the information related to the transform coefficients if the current block is coded in the Intra prediction mode or the Inter prediction mode, or the information related to the palette data stored in the transform coefficient buffer if the current prediction mode is the palette coding mode.

公开(公告)号：US10567751B2

公开(公告)日：2020-02-18

申请号：US15841645

申请日：2017-12-14

申请人： HFI Innovation Inc.

发明人： Ching-Yeh Chen ,  Chih-Ming Fu ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N19/103 ,  H04N19/82 ,  H04N19/117 ,  H04N19/46 ,  H04N19/70

摘要： In one embodiment, a method receives a video bitstream corresponding to compressed video, wherein Filter Unit (FU) based in-loop filtering is allowed in a reconstruction loop associated with the compressed video. The method then derives reconstructed video from the video bitstream, wherein the reconstructed video is partitioned into FUs and derives a merge flag from the video bitstream for each of the FUs, wherein the merge flag indicates whether said each of the FUs is merged with a neighboring FU. The method further receives a merge index from the video bitstream if the merge flag indicates that said each of the FUs is merged, and receives the filter parameters from the video bitstream if the merge flag indicates that said each of the FUs is not merged. Finally, the method applies the in-loop filtering to said each of the FUs using the filter parameters.

公开(公告)号：US09998737B2

公开(公告)日：2018-06-12

申请号：US15440114

申请日：2017-02-23

申请人： HFI Innovation Inc.

发明人： Chih-Ming Fu ,  Ching-Yeh Chen ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N19/117 ,  H04N19/176 ,  H04N19/129

CPC分类号： H04N19/117 ,  H04N19/10 ,  H04N19/115 ,  H04N19/129 ,  H04N19/134 ,  H04N19/137 ,  H04N19/14 ,  H04N19/154 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/439 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

摘要： A method and apparatus for processing of coded video using in-loop processing are disclosed. The method operates by receiving input data to said in-loop processing, wherein the input data corresponds to reconstructed coding units of the picture; configuring the input data into multiple filter units; selecting a filter from a candidate filter set comprising at least two candidate filters associated with said in-loop processing for one of said multiple filter units; applying said in-loop processing to said one of said multiple filter units using the selected filter to generate a processed filter unit, wherein when said one of said multiple filter units comprises at least two reconstructed coding units, the selected filter is applied to all of said at least two reconstructed coding units; and providing processed video data comprising the processed filter unit. The apparatus provide circuits to carryout the operations of the method.

公开(公告)号：US11997266B2

公开(公告)日：2024-05-28

申请号：US17627732

申请日：2020-07-24

申请人： HFI Innovation Inc.

发明人： Yu-Wen Huang ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Tzu-Der Chuang ,  Shaw-Min Lei

IPC分类号： H04N19/117 ,  H04N19/186

CPC分类号： H04N19/117 ,  H04N19/186

摘要： Methods and apparatus for loop-filter processing of reconstructed video are disclosed. According to one method, multiple CC-ALF (Cross-Component Adaptive Loop Filter) filters are used. Selection of the multiple CC-ALF filters can be signalled in one APS (Adaptation Parameter Set). According to another method, the CC-ALF can be implemented according to the difference between a to-be-process sample and its neighbouring sample.

公开(公告)号：US11979613B2

公开(公告)日：2024-05-07

申请号：US17851268

申请日：2022-06-28

申请人： HFI Innovation Inc.

发明人： Ching-Yeh Chen ,  Olena Chubach ,  Chen-Yen Lai ,  Tzu-Der Chuang ,  Chih-Wei Hsu ,  Yu-Wen Huang

IPC分类号： H04N19/00 ,  H04N19/117 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

CPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

摘要： Encoding methods and apparatuses include receiving input video data of a current block in a current picture and applying a Cross-Component Adaptive Loop Filter (CCALF) processing on the current block based on cross-component filter coefficients to refine chroma components of the current block according to luma sample values. The method further includes signaling two Adaptive Loop Filter (ALF) signal flags and two CCALF signal flags in an Adaptation Parameter Set (APS) with an APS parameter type equal to ALF or parsing two ALF signal flags and two CCALF signal flags from an APS with an APS parameter type equal to ALF, signaling or parsing one or more Picture Header (PH) CCALF syntax elements or Slice Header (SH) CCALF syntax elements, wherein both ALF and CCALF signaling are present either in a PH or SH, and encoding or decoding the current block in the current picture.

公开(公告)号：US11863757B2

公开(公告)日：2024-01-02

申请号：US17464498

申请日：2021-09-01

申请人： HFI Innovation Inc.

发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Zhi-Yi Lin

IPC分类号： H04N19/149 ,  H04N19/176 ,  H04N19/105 ,  H04N19/196

CPC分类号： H04N19/149 ,  H04N19/105 ,  H04N19/176 ,  H04N19/196

摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to encode or decode video data. A current block of video data is coded using affine prediction. A first set of candidates of a candidate list for the current block is generated, including determining one or more inherited candidates and deriving one or more constructed candidates. After generating the first set of candidates, it is determined whether the candidate list is full. Upon determining the candidate list is not full, the candidate list is filled by generating a second set of candidates of the candidate list, including one or more of generating one or more zero motion vector candidates, generating one or more additional derived candidates based on the plurality of associated neighboring blocks of the current block, and generating a temporal motion vector candidate based on a temporal collocated picture.