公开(公告)号：US10477214B2

公开(公告)日：2019-11-12

申请号：US15107909

申请日：2014-12-16

Applicant: HFI Innovation Inc.

Inventor： Xianguo Zhang ,  Kai Zhang ,  Jicheng An

IPC: H04N19/13 ,  H04N19/463 ,  H04N19/186 ,  H04N19/159 ,  H04N19/196 ,  H04N19/91

Abstract: A method for inter-color residual prediction using an improved scaling parameter coding is disclosed. In one embodiment, a scaling parameter is used for inter-color residual prediction between a first color component and a second color component. The scaling parameter is coded using context-based coding having the same number of context models as the longest binary code for the absolute values of the scaling parameter. For example, when the first scaling parameter is selected from a group consisting of 8, 4, 2, 1, 0, −1, −2 −4 and −8, the absolute values of the scaling parameter can be represented by binary codes with the longest binary code having 4 bits. The context-based coding for the absolute scaling parameter also uses 4 context models. In a second embodiment, the scaling parameter is coded using binary codes by assigning a shorter binary code to a larger non-zero scaling parameter.

公开(公告)号：US10455231B2

公开(公告)日：2019-10-22

申请号：US15514129

申请日：2015-09-30

Applicant: HFI Innovation Inc.

Inventor： Xiaozhong Xu ,  Kai Zhang ,  Shan Liu ,  Jicheng An ,  Xianguo Zhang

IPC: H04N19/117 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/124 ,  H04N19/523 ,  H04N19/86

Abstract: A method of MVP (motion vector prediction) for video coding with adaptive motion vector resolution is disclosed. According to the present invention, the MVP coding is applied to the current MV or the current MV is stored depending on the current MV resolution, the reference MV resolution, or both the current MV resolution and the reference MV resolution. In one embodiment, when the current MV resolution corresponds to integer pixel resolution, MVP coding is then applied to the current MV using a modified temporal MV as a motion vector predictor for the current MV, where the modified temporal MV is generated by right-shifting the temporal MV. In another embodiment, when the current MV resolution corresponds to integer pixel resolution, the current MV is left-shifted before it is stored in a memory.

公开(公告)号：US10349083B2

公开(公告)日：2019-07-09

申请号：US15121142

申请日：2015-03-17

Applicant: HFI Innovation Inc.

Inventor： Yi-Wen Chen ,  Kai Zhang ,  Jian-Liang Lin ,  Yu-Wen Huang

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/136 ,  H04N19/174

Abstract: A method and apparatus for low-latency illumination compensation in a three-dimensional (3D) and multi-view coding system are disclosed. According to the present invention, the encoder determines whether to enable or disable the illumination compensation for the current picture or slice based on a condition related to statistic associated with a selected reference picture or slice respectively, or related to high-level coding information associated with the current picture or slice respectively. The high-level coding information associated with the current picture or slice excludes any information related to pixel values of the current picture or slice respectively. The illumination compensation is them applied according to the decision made by the encoder. A similar low-latency method is also applied for depth lookup table (DLT) based coding.

公开(公告)号：US10116964B2

公开(公告)日：2018-10-30

申请号：US14517787

申请日：2014-10-17

Applicant: HFI INNOVATION INC.

Inventor： Jicheng An ,  Kai Zhang ,  Yi-Wen Chen ,  Jian-Liang Lin

IPC: H04N13/00 ,  H04N19/51 ,  H04N19/597 ,  H04N13/128 ,  H04N13/161

Abstract: A method for a three-dimensional encoding or decoding system incorporating restricted sub-PU level prediction is disclosed. In one embodiment, the sub-PU level prediction associated with inter-view motion prediction or view synthesis prediction is restricted to the uni-prediction. In another embodiment, the sub-PU partition associated with inter-view motion prediction or view synthesis prediction is disabled if the sub-PU partition would result in sub-PU size smaller than the minimum PU split size or the PU belongs to a restricted partition group. The minimum PU split size may correspond to 8×8. The restricted partition group may correspond to one or more asymmetric motion partition (AMP) modes.

公开(公告)号：US09900621B2

公开(公告)日：2018-02-20

申请号：US14655973

申请日：2014-04-10

Applicant: HFI INNOVATION INC.

Inventor： Jicheng An ,  Kai Zhang ,  Jian-Liang Lin

IPC: H04N19/597 ,  H04N13/00 ,  H04N19/176 ,  H04N21/218

CPC classification number: H04N19/597 ,  H04N13/00 ,  H04N13/161 ,  H04N19/176 ,  H04N21/21805

Abstract: A method and apparatus of three-dimensional/multi-view coding using aligned reference information are disclosed. The present system aligns the reference information associated with the reference view of the derived DV with the reference information associated with a selected reference view by modifying the selected reference view or by modifying the derived DV or a converted DV derived from depth block pointed by the derived DV. The DV can be derived using the Neighboring Block Disparity Vector (NBDV) process. When the reference view of the derived DV is different from the selected reference view, the system scales the derived DV or changes the converted DV to refer to the selected reference view. The system may also set the selected reference view to the reference view of the derived DV.

公开(公告)号：US20170332100A9

公开(公告)日：2017-11-16

申请号：US14503427

申请日：2014-10-01

Applicant: HFI INNOVATION INC.

Inventor： Xianguo Zhang ,  Kai Zhang ,  Jicheng An ,  Jian-Liang Lin

IPC: H04N19/597 ,  H04N13/00 ,  H04N19/176 ,  H04N19/139 ,  H04N19/119

CPC classification number: H04N19/597 ,  H04N13/111 ,  H04N13/128 ,  H04N13/161 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176

Abstract: A method and apparatus for three-dimensional or multi-view video encoding and decoding using VSP (view synthesis prediction) with uniform sub-block partition are disclosed. For a current texture block comprising multiple partition blocks, the system derives a single partition decision and partitions each partition block of the current texture block into multiples sub-blocks according to the single partition decision. The VSP processing is then applied to each sub-block to derive the inter-view prediction using VSP. The single partition decision is derived using depth samples of the depth block in a reference view.

公开(公告)号：US09743066B2

公开(公告)日：2017-08-22

申请号：US14329726

申请日：2014-07-11

Applicant: HFI INNOVATION INC.

Inventor： Na Zhang ,  Jicheng An ,  Jian-Liang Lin ,  Yi-Wen Chen ,  Kai Zhang

IPC: H04N13/00 ,  H04N19/597 ,  H04N19/176 ,  H04N19/196 ,  H04N19/103

CPC classification number: H04N13/161 ,  H04N13/194 ,  H04N19/103 ,  H04N19/176 ,  H04N19/196 ,  H04N19/597

Abstract: Multi-view video encoding using early Merge mode decision and/or early CU split termination is disclosed. The present invention encodes a current coding block using the Merge/Skip mode without evaluating coding performance for at least one of Inter modes and Intra modes if the coding conditions associated with the current coding block and a neighboring block set of the current coding block are asserted. The coding conditions may correspond to whether the coding performance of the Skip mode is better than the coding performance of 2N×2N Merge mode for the current coding block and whether all blocks in the neighboring block set select the Merge mode or the Skip mode. Similarly, the process of splitting the current coding block into smaller coding blocks can be terminated without evaluating coding performance associated with the smaller coding blocks from splitting the current coding block if some coding conditions are asserted.