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.

公开(公告)号：US09961370B2

公开(公告)日：2018-05-01

申请号：US14762861

申请日：2014-04-02

Applicant: HFI Innovation Inc.

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

IPC: H04N19/597 ,  H04N19/196 ,  H04N19/52 ,  H04N19/463 ,  H04N13/00 ,  H04N19/513

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/196 ,  H04N19/197 ,  H04N19/463 ,  H04N19/513 ,  H04N19/52

Abstract: A method and apparatus for a three-dimensional encoding or decoding system incorporating view synthesis prediction (VSP) with reduced computational complexity and/or memory access bandwidth are disclosed. The system applies the VSP process to the texture data only and applies non-VSP process to the depth data. Therefore, when a current texture block in a dependent view is coded according to VSP by backward warping the current texture block to the reference picture using an associated depth block and the motion parameter inheritance (MPI) mode is selected for the corresponding depth block in the dependent view, the corresponding depth block in the dependent view is encoded or decoded using non-VSP inter-view prediction based on motion information inherited from the current texture block.

公开(公告)号：US09843821B2

公开(公告)日：2017-12-12

申请号：US14916170

申请日：2015-06-24

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/52 ,  H04N19/597 ,  H04N19/537 ,  H04N19/573

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/537 ,  H04N19/573

Abstract: A method and apparatus for inter-view ARP (advanced residual prediction) are disclosed. According to one embodiment, a first inter-view reference block of a first inter-view reference picture in a first reference view is determined using a current MV (motion vector) of the current block in an inter-view direction. A first MV associated with the first inter-view reference block is derived. If the first MV points to a second inter-view reference picture in a second reference view, the derived MV is set to a default derived MV. A second temporal reference block in the second temporal reference picture corresponding to the current block is identified using the derived MV. An inter-view residual predictor corresponding to the difference between a second inter-view reference block in the first reference view and the second temporal reference block is generated and used as a predictor for the current inter-view residual of the current block.

公开(公告)号：US09819959B2

公开(公告)日：2017-11-14

申请号：US15480671

申请日：2017-04-06

Applicant: HFI Innovation Inc.

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

IPC: H04N19/597 ,  H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/172

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/14 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597

Abstract: A method for three-dimensional or multi-view video coding receives input data associated with a current block of a current picture in a current dependent view, wherein the current block is inter-time coded based on an inter-time reference block located by a motion vector (MV), determines estimated DV (disparity vector) candidates from neighboring DVs, applies an evaluation function to the estimated DV candidates to obtain evaluation results for the estimated DV candidates, and selects a final estimated DV. The method then determines an inter-view reference region in an inter-view reference picture, determines first pseudo residues, wherein the first pseudo residues correspond to first differences between the inter-view reference region and a pseudo reference region in a pseudo reference picture located by the MV, and applies encoding or decoding to the input data associated with residues of the current block utilizing the first pseudo residues.

公开(公告)号：US09667997B2

公开(公告)日：2017-05-30

申请号：US14403189

申请日：2013-05-07

Applicant: HFI INNOVATION INC.

Inventor： Jicheng An ,  Liang Zhao ,  Xun Guo ,  Shaw-Min Lei

IPC: H04N9/47 ,  H04N19/61 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/12 ,  H04N19/127 ,  H04N19/44 ,  H04N19/91

CPC classification number: H04N19/61 ,  H04N19/12 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/70 ,  H04N19/91

Abstract: A method and apparatus for video coding including an Intra transform Skip mode is disclosed. When the transform Skip mode is ON for a transform unit, embodiments according to the present invention apply different coding processes to the transform unit. The coding process with the transform Skip mode ON uses a different scan pattern from the coding process with the transform Skip mode OFF. According to various embodiments, the transform Skip mode is enabled when the transform unit size is 4×4, the prediction unit and the transform unit having the same size, or the prediction unit uses an INTRA_N×N mode. When the transform Skip mode is enabled, a flag can be signaled in the bitstream to indicate the transform Skip mode selection. Furthermore, the flag can be incorporated in a picture level, a slice level or a sequence level of the video bitstream.

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.