公开(公告)号：US11089330B2

公开(公告)日：2021-08-10

申请号：US16282773

申请日：2019-02-22

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/00 ,  H04N19/597 ,  H04N19/52 ,  H04N19/436 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176

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：US10165252B2

公开(公告)日：2018-12-25

申请号：US14891822

申请日：2014-07-10

Applicant: HFI INNOVATION INC.

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

IPC: H04N13/00 ,  H04N19/139 ,  H04N19/44 ,  H04N19/176 ,  H04N19/52 ,  H04N13/161 ,  H04N19/597

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-PUs 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：US10110923B2

公开(公告)日：2018-10-23

申请号：US14784675

申请日：2014-06-27

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/597 ,  H04N19/513 ,  H04N19/30 ,  H04N19/176 ,  H04N19/44 ,  H04N19/105

Abstract: A method of deriving VSP (View Synthesis Prediction) Merge candidates with aligned inter-view reference pictures is disclosed. The method generates a second Disparity Vector (DV) using a scaled DV derived from Neighboring Block Disparity Vector (NBDV) of the current block. A method of deriving one or more inter-view DV Merge candidates with aligned DV and associated inter-view reference pictures is also disclosed. The inter-view reference picture pointed by the DV derived from Depth oriented NBDV (DoNBDV) is used as the reference picture and the DV derived from DoNBDV is used as the DV for inter-view DV Merge candidate. Furthermore, a method of deriving temporal DV for NBDV is disclosed, where if the temporal neighboring block has a DV existing, the DV is used as an available DV for the current CU only if the associated inter-view reference picture exists in the reference lists of the current CU.

公开(公告)号：US09924168B2

公开(公告)日：2018-03-20

申请号：US14433328

申请日：2013-09-02

Applicant: HFI INNOVATION INC.

Inventor： Kai Zhang ,  Jicheng An

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/597 ,  H04N19/176 ,  H04N19/52 ,  H04N19/527

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52 ,  H04N19/527 ,  H04N19/597

Abstract: A method and apparatus for three-dimensional and multi-view video coding are disclosed, where the motion vector (MV) or disparity vector (DV) candidate list construction process for a block depends on whether the target reference picture corresponds to an inter-view reference picture or whether the inter-view candidate refers to an inter-view reference picture. In one embodiment, an MV or DV candidate list for a block coded in Merge mode is constructed, and an inter-view candidate in the MV or DV candidate list is set lower than the first candidate position if the inter-view candidate refers to an inter-view reference picture. In another embodiment, an MV or DV candidate list for a block coded in advanced motion vector prediction mode is constructed, and an inter-view candidate is set lower than the first candidate position if the inter-view candidate refers to an inter-view reference picture.

公开(公告)号：US09838712B2

公开(公告)日：2017-12-05

申请号：US14656993

申请日：2015-03-13

Applicant: HFI Innovation Inc.

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

IPC: H04N19/597 ,  H04N19/119 ,  H04N19/159 ,  H04N19/70 ,  H04N19/176 ,  H04N13/00

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: A method of signaling depth-based block partitioning (DBBP) for multi-view or three-dimensional (3D) video coding is disclosed. In one embodiment, the DBBP flag is signaled for all candidate prediction modes of the current texture coding unit including a non-2N×N partition mode. The group of candidate prediction modes may consist of 2N×N partition mode and N×2N partition mode. If the DBBP flag indicates the DBBP being used for the current texture coding unit, DBBP encoding is applied to the current texture coding unit or DBBP decoding is applied to one or more PUs associated with the current texture coding unit to recover the current texture coding unit. If the DBBP flag indicates the DBBP being not used for the current texture coding unit, a prediction partition mode is signaled at an encoder side or parsed at a decoder side from a CU (coding unit) level of the bitstream.

公开(公告)号：US10820015B2

公开(公告)日：2020-10-27

申请号：US15108878

申请日：2014-12-31

Applicant: HFI Innovation Inc.

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

IPC: H04N19/597 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/86 ,  H04N19/172 ,  H04N19/182 ,  H04N19/96

Abstract: A method and apparatus for Intra prediction coding in multi-view video coding, three-dimensional video coding, or screen content video coding are disclosed. A first filtering-disable-flag associated with a high-level video data is determined to indicate whether to disable at least one filter from a filter group. If the first filtering-disable-flag is asserted, one or more selected Intra prediction modes from an Intra prediction mode group is determined, and at least one filter from the filter group for the current block is skipped if the current Intra prediction mode of the current block belongs to the selected Intra prediction modes. The system may further determine a second filtering-disable-flag associated with a low-level video data corresponding to a current block level or a higher level than the current block level to disable said at least one filter from a filter group for the low-level video data.

公开(公告)号：US10244259B2

公开(公告)日：2019-03-26

申请号：US15869677

申请日：2018-01-12

Applicant: HFI Innovation Inc.

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

IPC: H04N19/597 ,  H04N13/00 ,  H04N13/161 ,  H04N19/176 ,  H04N21/218

Abstract: A method and apparatus of three-dimensional/multi-view coding using aligned reference information are disclosed. The method operates by receiving input data associated with a current block of a current frame in a dependent view, determining a first DV (Disparity Vector) from one or more neighboring blocks of the current block, wherein the first DV refers to a first reference view to derive first reference information, selecting a second reference view for the current block to derive second reference information, aligning the first reference information associated with the first reference view with the second reference information associated with the second reference view, and applying inter-view encoding or decoding to the input data utilizing the first DV or the second reference information after applying said aligning the first reference information with the second reference information.

公开(公告)号：US10218957B2

公开(公告)日：2019-02-26

申请号：US14905705

申请日：2015-06-18

Applicant: HFI INNOVATION INC.

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

IPC: H04N13/00 ,  H04N19/44 ,  H04N19/51 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30 ,  H04N19/187 ,  H04N19/176 ,  H04N19/136 ,  H04N13/161 ,  H04N13/128 ,  H04N13/15

Abstract: A method of sub-PU (prediction unit) syntax element signaling for a three-dimensional or multi-view video coding system is disclosed. A first syntax element associated with a texture sub-PU size is transmitted only for texture video data and a second syntax element associated with a depth sub-PU size is transmitted only for depth video data. The first syntax element associated with the texture sub-PU size is used to derive an IVMP (inter-view motion prediction) prediction candidate used for a texture block. The second syntax element associated with the depth sub-PU size is used to a MPI (motion parameter inheritance) prediction candidate for a depth block.

公开(公告)号：US09992494B2

公开(公告)日：2018-06-05

申请号：US14583628

申请日：2014-12-27

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/119 ,  H04N19/597 ,  H04N19/176 ,  H04N19/46 ,  H04N19/136 ,  H04N13/00

CPC classification number: H04N13/161 ,  H04N13/106 ,  H04N13/15 ,  H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/597

Abstract: A method of simplified depth-based block partitioning (DBBP) for three-dimensional and multi-view video coding is disclosed. In one embodiment, the derivation of a representative value of a corresponding depth block or a reference texture block in a reference view for generating a segmentation mask and selecting a block partition are unified. In another embodiment, the first representative value, the second representative value, or both are calculated from partial samples of the corresponding depth block or the reference texture block. In yet another embodiment, a first representative value for first samples in a first partitioned block of the corresponding depth block or the reference texture block, and a second representative value for second samples in a second partitioned block of the corresponding depth block or the reference texture block for each of block partition candidates are determined.

公开(公告)号：US09986257B2

公开(公告)日：2018-05-29

申请号：US15816946

申请日：2017-11-17

Applicant: HFI Innovation Inc.

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

IPC: G06K9/36 ,  H04N19/593 ,  H04N19/146 ,  H04N19/597

CPC classification number: H04N19/593 ,  H04N19/146 ,  H04N19/597

Abstract: A method and apparatus of depth coding using depth modelling mode 1 (DMM1) are disclosed to reduce the wedgelet pattern table size. In one embodiment, a size-reduced wedgelet pattern for a reduced wedgelet pattern table is generated by excluding at least one non-corner adjacent-edge sample for adjacent-edge partition or at least one opposite-edge sample for opposite-edge partition from starting positions or from ending positions. The reduced wedgelet pattern table may also include at least one omitted wedgelet pattern in at least one wedgelet direction category. For the adjacent-edge partition, the starting positions and the ending positions may correspond to every other even non-corner adjacent-edge samples in a first and a second adjacent edges respectively. For the opposite-edge partition, the starting positions correspond to every other even opposite-edge samples in a first opposite edge and the ending positions include all opposite-edge samples in a second opposite edge.