公开(公告)号：US10681383B2

公开(公告)日：2020-06-09

申请号：US15563788

申请日：2016-04-08

Applicant: HFI Innovation Inc.

Inventor： Jing Ye ,  Jungsun Kim ,  Shan Liu ,  Kai Zhang ,  Tzu-Der Chuang ,  Weijia Zhu

IPC: H04N19/70 ,  H04N19/91 ,  H04N19/463 ,  H04N19/593 ,  H04N19/13 ,  H04N19/176

Abstract: A method of video coding using the palette coding mode with reduced complexity by sharing context(s) between context-based entropy coding of syntax element for the last run type mode and context-based entropy coding of syntax element for the run type mode is disclosed. A method with reduced complexity for binarization of the syntax element associated with the number of palette indices of the current block is disclosed, where Rice parameter is derived for the number of palette indices without the need for a division or table lookup operation. In another method, the syntax element to specify whether transpose process is applied to associated palette indices of the current block is signalled in the bitstream for the current block in a location after the syntax element to specify a last run type mode for the current block.

公开(公告)号：US10587859B2

公开(公告)日：2020-03-10

申请号：US16171149

申请日：2018-10-25

Applicant: HFI Innovation Inc.

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

IPC: H04N13/161 ,  H04N19/597 ,  H04N19/52 ,  H04N19/176 ,  H04N19/44 ,  H04N19/139

Abstract: A method for a three-dimensional encoding or decoding system incorporating sub-block based inter-view motion prediction is disclosed. The system utilizes motion or disparity parameters associated with reference sub-blocks in a reference picture of a reference view corresponding to the texture sub-PCU split from a current texture PU (prediction unit) to predict the motion or disparity parameters of the current texture PU. Candidate motion or disparity parameters for the current texture PU may comprise candidate motion or disparity parameters derived for all texture sub-PUs from splitting the current texture PU. The candidate motion or disparity parameters for the current texture PU can be used as a sub-block-based inter-view Merge candidate for the current texture PU in Merge mode. The sub-block-based inter-view Merge candidate can be inserted into a first position of a candidate list.

公开(公告)号：US20190191180A1

公开(公告)日：2019-06-20

申请号：US16282773

申请日：2019-02-22

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/139 ,  H04N19/52 ,  H04N19/436 ,  H04N19/105

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52

Abstract: A method and apparatus for coding a depth block in three-dimensional video coding are disclosed. Embodiments of the present invention divide a depth block into depth sub-blocks and determine default motion parameters. For each depth sub-block, the motion parameters of a co-located texture block covering the center sample of the depth sub-block are determined. If the motion parameters are available, the motion parameters are assigned as inherited motion parameters for the depth sub-block. If the motion parameters are unavailable, the default motion parameters are assigned as inherited motion parameters for the depth sub-block. The depth sub-block is then encoded or decoded using the inherited motion parameters or a motion candidate selected from a motion candidate set including the inherited motion parameters. The depth block may correspond to a depth prediction unit (PU) and the depth sub-block corresponds to a depth sub-PU.

公开(公告)号：US10306225B2

公开(公告)日：2019-05-28

申请号：US14779431

申请日：2014-05-20

Applicant: HFI INNOVATION INC.

Inventor： Kai Zhang ,  Jicheng An

IPC: H04N13/10 ,  H04N13/106 ,  H04N13/122 ,  H04N13/128 ,  H04N19/119 ,  H04N19/176 ,  H04N19/597 ,  H04N19/44 ,  H04N19/172 ,  H04N19/463

Abstract: A method of depth map coding for a three-dimensional video coding system incorporating consistent texture merging candidate is disclosed. According to the first embodiment, the current depth block will only inherit the motion information of the collocated texture block if one reference depth picture has the same POC (picture order count) and ViewId (view identifier) as the reference texture picture of the collocated texture block. In another embodiment, the encoder assigns the same total number of reference pictures for both the depth component and the collocated texture component for each reference list. Furthermore, the POC (picture order count) and the ViewId (view identifier) for both the depth image unit and the texture image unit are assigned to be the same for each reference list and for each reference picture.

公开(公告)号：US10110922B2

公开(公告)日：2018-10-23

申请号：US14762508

申请日：2014-04-03

Applicant: HFI INNOVATION INC.

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

IPC: H04N7/12 ,  H04N19/597 ,  H04N13/10 ,  H04N19/105 ,  H04N19/50 ,  H04N19/503

Abstract: A method of illumination compensation for three-dimensional or multi-view encoding and decoding. The method incorporates an illumination compensation flag only if the illumination compensation is enabled and the current coding unit is processed by one 2N×2N prediction unit. The illumination compensation is applied to the current coding unit according to the illumination compensation flag. The illumination compensation flag is incorporated when the current coding unit is coded in Merge mode without checking whether a current reference picture is an inter-view reference picture.

公开(公告)号：US10085041B2

公开(公告)日：2018-09-25

申请号：US15696260

申请日：2017-09-06

Applicant: HFI Innovation Inc.

Inventor： Kai Zhang ,  Jicheng An ,  Xianguo Zhang ,  Han Huang

IPC: H04N19/597 ,  H04N19/34 ,  H04N19/503 ,  H04N19/70

CPC classification number: H04N19/597 ,  H04N19/34 ,  H04N19/503 ,  H04N19/70

Abstract: A method and apparatus for depth lookup table (DLT) signaling in a three-dimensional and multi-view coding system. The method identifies one or more pictures to be processed. If one or more pictures contain depth data, then the method determines the DLT associated with said one or more pictures, applies predictive coding to the DLT based on the previous DLT, includes syntax related to the DLT in the PPS, and includes first bit-depth information related to first depth samples of the DLT in the PPS. The first bit-depth information is consistent with second bit depth information signaled in a sequence level. The method further signals the PPS in a video bitstream for a sequence including said one or more pictures. A circuit is also provided that embodies circuitry configured to carry out the operations specified above.

公开(公告)号：US20180077427A9

公开(公告)日：2018-03-15

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: H04N19/597 ,  H04N13/00 ,  H04N19/51

CPC classification number: H04N19/597 ,  H04N13/128 ,  H04N13/161 ,  H04N19/105 ,  H04N19/157 ,  H04N19/51 ,  H04N19/513

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：US09912964B2

公开(公告)日：2018-03-06

申请号：US14582045

申请日：2014-12-23

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/597 ,  H04N19/517 ,  H04N19/176 ,  H04N19/119 ,  H04N19/157

CPC classification number: H04N19/597 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/517

Abstract: A method of improved texture-partition-dependent depth partition is disclosed. First, the available texture partitions for a collocated texture block are classified into two or more groups, and a set of candidate depth partitions is determined for each group. In one embodiment, at least one set of the candidate depth partitions contain more than one candidate depth partition and less than all candidate depth partitions. In another embodiment, the collocated texture blocks are classified into two groups, and one of the two groups includes the N×N texture partition and at least another texture partition. In yet another embodiment, the collocated texture blocks are classified into three groups or more. A current depth partition for the current depth block is then selected from a corresponding set of candidate depth partitions according to a corresponding group that a current texture partition associated with the collocated texture block belongs.

公开(公告)号：US09762882B2

公开(公告)日：2017-09-12

申请号：US14655436

申请日：2014-01-10

Applicant: HFI INNOVATION INC.

Inventor： Kai Zhang ,  Jicheng An

IPC: H04N13/00 ,  H04N19/48 ,  H04N19/597 ,  H04N19/463 ,  H04N19/14

CPC classification number: H04N13/122 ,  H04N13/128 ,  H04N13/161 ,  H04N19/14 ,  H04N19/463 ,  H04N19/48 ,  H04N19/597

Abstract: A method and apparatus for encoding and decoding depth lookup table (DLT) using a constrained table value range are disclosed. For a decoder, a constrained table value range from a minimum table value to a maximum table value of the DLT is decoded from the coded DLT information. Bit map values for depth values in a depth range from (the minimum table value+1) to (the maximum table value−1) are then decoded. The bit map values indicate whether the depth values are in the DLT respectively. The DLT for the current depth map can be reconstructed based on the constrained table value range and the bit map values for the depth values in the depth range. For an encoder, a constrained table value range from a minimum table value to a maximum table value of the DLT is determined and encoded the DLT into coded DLT information.

公开(公告)号：US09621920B2

公开(公告)日：2017-04-11

申请号：US14582115

申请日：2014-12-23

Applicant: HFI INNOVATION INC.

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

IPC: H04N7/12 ,  H04N15/00 ,  H04N19/597 ,  H04N19/513 ,  H04N13/00 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/103

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/103 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513

Abstract: A method and apparatus for a three-dimensional or multi-view video encoding or decoding system are disclosed, where a three-dimensional coding tool relying on a disparity vector are adaptively applied depending on whether the inter-view reference picture pointed by the disparity vector is in the reference list associated with the current slice. The three-dimensional coding tool may correspond to the Inter-View Motion Prediction (IVMP) or View Synthesis Prediction (VSP). If the inter-view reference picture pointed by the DV is not in the current reference list associated with the current slice, the selected three-dimensional coding tool is disabled for the current block. If the inter-view reference picture pointed by the DV is in the current reference list associated with the current slice, the selected three-dimensional coding tool can be applied to the current block.