公开(公告)号：US10298956B2

公开(公告)日：2019-05-21

申请号：US14368264

申请日：2012-11-22

申请人： HFI Innovation Inc.

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

IPC分类号： H04N19/136 ,  H04N19/64 ,  H04N19/46 ,  H04N19/13 ,  H04N19/18 ,  H04N19/129 ,  H04N19/60

摘要： A method and apparatus for significance map context selection are disclosed. According to the present invention, the TUs are divided into sub-blocks and at least two context sets are used. Non-DC transform coefficients in each sub-block are coded based on the same context, context set, or context formation. The context, context set, or context formation for each sub- block can be determined based on sub-block index in scan order, horizontal sub-block index, vertical sub-block index, video component type, TU width, TU height, or any combination of the above. In one embodiment, the sum of the horizontal and the vertical sub-block indexes is used to classify each sub-block into a class and the context, context set, or context formation is then determined according to the class.

公开(公告)号：US09924181B2

公开(公告)日：2018-03-20

申请号：US14406529

申请日：2013-06-13

申请人： HFI Innovation Inc.

发明人： Tzu-Der Chuang ,  Yu-Wen Huang ,  Ching-Yeh Chen ,  Chia-Yang Tsai ,  Chih-Ming Fu ,  Shih-Ta Hsiang

IPC分类号： H04N19/30 ,  H04N19/31 ,  H04N19/587 ,  H04N19/52 ,  H04N19/50 ,  H04N19/59 ,  H04N19/33 ,  H04N19/593 ,  H04N19/51 ,  H04N19/36

CPC分类号： H04N19/30 ,  H04N19/31 ,  H04N19/33 ,  H04N19/36 ,  H04N19/50 ,  H04N19/51 ,  H04N19/52 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593

摘要： A method and apparatus for inter-layer prediction for scalable video coding are disclosed. Embodiments of the present invention utilize weighted prediction for scalable coding. The weighted prediction is based on the predicted texture data and the inter-layer Intra prediction data derived from BL reconstructed data. The inter-layer Intra prediction data corresponds to the BL reconstructed data or up-sampled BL reconstructed data. The predicted texture data corresponds to spatial Intra prediction data or motion-compensated prediction data based on the second EL video data in the same layer as the current EL picture. Embodiments of the present invention also utilize the reference picture list including an inter-layer reference picture (ILRP) corresponding to BL reconstructed texture frame or up-sampled BL reconstructed texture frame for Inter prediction of EL video data. The motion vector is limited to a range around (0,0) when the ILRP is selected as a reference picture.

公开(公告)号：US09866848B2

公开(公告)日：2018-01-09

申请号：US15672401

申请日：2017-08-09

申请人： HFI Innovation Inc.

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

IPC分类号： H04N19/176 ,  H04N19/167 ,  H04N19/159 ,  H04N19/102 ,  H04N19/91 ,  H04N19/463 ,  H04N19/13

CPC分类号： H04N19/176 ,  H04N19/102 ,  H04N19/13 ,  H04N19/159 ,  H04N19/167 ,  H04N19/463 ,  H04N19/91

摘要： A method for encoding luma intra mode using context adaptive entropy processing determines a current luma intra mode for a current block and determines whether a neighboring block of the current block within a region of an independently coded slice is on a different side of a boundary of the region from the current block. The method replaces prediction mode information associated with the neighboring block by DC mode if the neighboring block is on the different side of the boundary of the region from the current block, and forms data for processing a current syntax element associated with the current luma intra mode based on the prediction mode information associated with the neighboring block. In addition, the method performs context adaptive entropy encoding processing on the current syntax element according to the formed data.

公开(公告)号：US12114015B2

公开(公告)日：2024-10-08

申请号：US17783954

申请日：2020-12-10

申请人： HFI Innovation Inc.

发明人： Man-Shu Chiang ,  Tzu-Der Chuang ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Zhi-Yi Lin

IPC分类号： H04N19/70 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

CPC分类号： H04N19/70 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

摘要： In a method and apparatus for video coding using Low-Frequency Non-Separable Transform (LFNST) mode, a coding unit (CU) is partitioned into one or more transform blocks (TBs). A syntax is determined at an encoder side or at a decoder side, where the determining step is performed by signaling the syntax at the encoder side or by parsing the syntax at the decoder side if one or more conditions are satisfied. The syntax indicates whether the LFNST mode is applied to the current CU and/or which LFNST kernel is applied when the LFNSF is applied, and the conditions comprise a target condition corresponding to that all target TBs in a target TB set have a TS mode indication as false, and the target TB set is selected from the TBs in the current CU. The current CU is encoded or decoded according to the LFNST mode.

公开(公告)号：US11949852B2

公开(公告)日：2024-04-02

申请号：US17641645

申请日：2020-09-16

申请人： HFI Innovation Inc.

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

IPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

摘要： A method and apparatus of video coding, where according to one method, input data related to a current block in a current picture are received at a video encoder side or compressed data comprising the current block are received at a video decoder side. A first syntax at a high level in a video bitstream regarding residual coding type is signaled at the encoder side or parsed at the decoder side. A target coding mode is determined for the current block based on information comprising a value of the first syntax. The current block is encoded at the encoder side or decoded at the decoder side according to the target coding mode. The high level may correspond to a slice header or a picture header.

公开(公告)号：US11924444B2

公开(公告)日：2024-03-05

申请号：US17717542

申请日：2022-04-11

申请人： HFI Innovation Inc.

发明人： Chia-Ming Tsai ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Tzu-Der Chuang ,  Yu-Wen Huang

IPC分类号： H04N19/00 ,  H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/513

CPC分类号： H04N19/176 ,  H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/184 ,  H04N19/513

摘要： Method and apparatus for constrained de-blocking filter are disclosed. One method 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 in the current picture at a video decoder side, and determines a first boundary associated with the current block, wherein the first boundary corresponds to one vertical boundary or one horizontal boundary of the current block. The method then applies de-blocking process to a reconstructed current block corresponding to the current block to result in a filtered-reconstructed current block, using a plurality of first reference samples at a same side of the first boundary, and replaces a first set of the first reference samples by one or more padding values. The method then generates a filtered decoded picture including the filtered-reconstructed current block.

公开(公告)号：US11924426B2

公开(公告)日：2024-03-05

申请号：US18158144

申请日：2023-01-23

申请人： HFI INNOVATION INC.

发明人： Shih-Ta Hsiang ,  Chen-Yen Lai ,  Ching-Yeh Chen

IPC分类号： H04N11/02 ,  H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/96

CPC分类号： H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/96

摘要： A video system that applies constraints on block partitioning is provided. The system receives a partitioning control parameter from a bitstream specifying a maximum block size for enabling ternary-tree split that is constrained to be 64 or smaller. The system receives data from a bitstream for a block of pixels to be decoded as a current block of a current picture of a video. The system splits the current block into one or more partitions recursively, wherein ternary split is disallowed for a partition of the current block unless the partition is less than or equal to the maximum block size. The system reconstructs the one or more partitions of the current block.

公开(公告)号：US11870978B2

公开(公告)日：2024-01-09

申请号：US17737568

申请日：2022-05-05

申请人： HFI INNOVATION INC.

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

IPC分类号： H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/593

CPC分类号： H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/593

摘要： An intra prediction method comprises receiving input data of a current block in a current picture, deriving reference samples of the current block from boundary samples, selecting a matrix for the current block, generating intermediate predicted samples by multiplying the reference samples and the matrix, and clipping the intermediate predicted samples before up-sampling. The intra prediction method further comprises performing an up-sampling process on the clipped intermediate predicted samples to generate predicted samples for the current block, and encoding or decoding the current block according to the predicted samples of the current block.

公开(公告)号：US11856194B2

公开(公告)日：2023-12-26

申请号：US17415313

申请日：2019-12-20

申请人： HFI Innovation Inc.

发明人： Man-Shu Chiang ,  Tzu-Der Chuang ,  Chih-Wei Hsu ,  Ching-Yeh Chen

IPC分类号： H04N19/119 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/119 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

摘要： A method and apparatus of Inter prediction for video coding using a target Merge mode comprising a triangle Merge mode are disclosed. According to this method, a current block is partitioned into a first region and a second region using the target partition. A candidate list is determined. Two candidates are determined for the two regions by deriving two target candidates from the candidate list. When a selected target candidate is a uni-prediction candidate, the selected target candidate is used as one candidate; and when the selected target candidate is a bi-prediction candidate, motion information associated of the selected target candidate with List 0 or List 1 is used as one candidate. The current block or current motion information associated with the current block is encoded or decoded according to the candidate list. The candidate list is used to derive the first candidate and the second candidate.

公开(公告)号：US11818383B2

公开(公告)日：2023-11-14

申请号：US17283338

申请日：2019-10-09

申请人： HFI Innovation Inc.

发明人： Man-Shu Chiang ,  Chih-Wei Hsu ,  Tzu-Der Chuang ,  Ching-Yeh Chen

IPC分类号： H04N19/513 ,  H04N19/176

CPC分类号： H04N19/513 ,  H04N19/176

摘要： Video processing methods and apparatuses for coding a current block generate a final predictor by combining multiple predictors for the current block. A first predictor and a second predictor for the current block are generated by applying one or a combination of settings to the first, second, or both predictors. One or both the first and second predictors are generated from motion compensation. The final predictor is derived from the first and second predictors, and the current block is encoded or decoded according to the final predictor. The settings include supported-mode setting, combined-weight setting, applied-portion setting, motion information setting, precision setting, or a combination of the above settings.