公开(公告)号：US09906813B2

公开(公告)日：2018-02-27

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 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N13/00

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：US09800896B2

公开(公告)日：2017-10-24

申请号：US15123882

申请日：2015-03-17

Applicant: HFI Innovation Inc.

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

IPC: H04N19/597 ,  H04N19/503 ,  H04N19/34 ,  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 are disclosed. According to the present invention, if the pictures contain only texture data, no DLT information is incorporated in the picture parameter set (PPS) corresponding to the pictures. On the other hand, if the pictures contain depth data, the DLT associated with the pictures is determined. If a previous DLT required for predicting the DLT exists, the DLT will be predicted based on the previous DLT. Syntax related to the DLT is included in the PPS. Furthermore, first bit-depth information related to first depth samples of the DLT is also included in the PPS and the first bit-depth information is consistent with second bit-depth information signaled in a sequence level data for second depth samples of a sequence containing the pictures.

公开(公告)号：US09648342B2

公开(公告)日：2017-05-09

申请号：US14442951

申请日：2013-11-14

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/597 ,  H04N19/52 ,  H04N19/176 ,  H04N19/14 ,  H04N19/172 ,  H04N19/174

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

Abstract: A method and apparatus using pseudo residues to predict current residues for three-dimensional or multi-view video coding are disclosed. The method first receives input data associated with a current block of a current picture in a current dependent view and determines an inter-view reference block in a first inter-view reference picture in a reference view according to a DV (disparity vector), where the current picture and the first inter-view reference picture correspond to same time instance. Pseudo residues are then determined and used for encoding or decoding of the current block, where the pseudo residues correspond to differences between a corresponding region in an inter-time reference picture in the current dependent view and a pseudo reference region in a pseudo reference picture in the reference view, and where the inter-time reference picture and the pseudo reference picture correspond to same time instance.

公开(公告)号：US09596484B2

公开(公告)日：2017-03-14

申请号：US14285658

申请日：2014-05-23

Applicant: HFI INNOVATION INC.

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

IPC: H04N19/597 ,  H04N19/159 ,  H04N19/105 ,  H04N19/174 ,  H04N19/51 ,  H04N19/583 ,  H04N19/52

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/52

Abstract: A method of depth map coding for a three-dimensional video coding system incorporating extended reconstructed neighboring depth samples is disclosed. The depth block is partitioned into one or more segments. A prediction value for each segment is derived based on reconstructed neighboring depth samples. The reconstructed neighboring depth samples for at least one segment include at least one reconstructed sample from an extended top neighboring row or an extended left neighboring column. The extended top neighboring row includes at least one extended top-row reconstructed depth sample located adjacent to top side of a second depth block adjacent to right side of the current depth block. The extended left neighboring column includes at least one extended left-column reconstructed depth sample located adjacent to left side of a third depth block adjacent to bottom side of the current depth block.

Abstract translation: 公开了一种包含扩展重建的相邻深度样本的三维视频编码系统的深度图编码方法。 深度块被划分成一个或多个段。 基于重建的相邻深度样本导出每个段的预测值。 用于至少一个段的重建的相邻深度样本包括来自扩展的顶部相邻行或扩展的左邻近列的至少一个重建样本。 扩展的顶部相邻行包括邻近当前深度块的右侧的第二深度块的顶侧附近的至少一个扩展的顶行重建深度样本。 延伸的左相邻列包括与邻近当前深度块的底侧的第三深度块的左侧相邻的至少一个延伸的左列重建深度样本。

公开(公告)号：US10531122B2

公开(公告)日：2020-01-07

申请号：US15895314

申请日：2018-02-13

Applicant: HFI Innovation Inc.

Inventor： Liang Zhao ,  Jicheng An ,  Xin Zhao ,  Xun Guo

IPC: H04N19/60 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96 ,  H04N19/132 ,  H04N19/186

Abstract: A method includes receiving the video bitstream from a media or a processor, recovering a first coded block flag (cbf) from the video bitstream based on a context-based adaptive binary arithmetic coding (CABAC) decoding process according to a first context formation, wherein the first cbf is associated with a first transform unit (TU) of a first color component, and the first cbf indicates whether the first TU of the first color component has at least one non-zero transform coefficient, and recovering a second cbf from the video bitstream based on the CABAC decoding process according to a second context formation, wherein the second cbf is associated with a second TU of a second color component, and the second cbf indicates whether the second TU of the second color component has at least one non-zero transform coefficient.

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：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：US09930330B2

公开(公告)日：2018-03-27

申请号：US14372696

申请日：2013-01-07

Applicant: HFI INNOVATION INC.

Inventor： Liang Zhao ,  Jicheng An ,  Xin Zhao ,  Xun Guo

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96 ,  H04N19/132 ,  H04N19/60

CPC classification number: H04N19/60 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/96

Abstract: A method and an apparatus for decoding of a video bitstream are disclosed. In one embodiment, the method comprises: decoding a first coded block flag (cbf) of the color component indicating whether a current coding unit (CU) of the color component has at least one non-zero transform coefficient (830). According to the first cbf of the color component, the method further comprises decoding four second cbfs, each indicating whether one of four sub-blocks in the current CU of the color component has at least one non-zero transform coefficient (850). The residual quad-tree (RQT) of the current CU of the color component is determined based on the first cbf of the color component (870), or based on the first cbf and the second cbfs of the color component if the second cbfs exist (860). In another embodiment, the method comprises decoding a cbf associated with a transform unit (TU) and determining RQT of the TU based on the cbf, wherein said determining the RQT of the TU based on the cbf is the same for a luma component and a chroma component and the cbf is recovered from the video bitstream.

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.