公开(公告)号：US09729897B2

公开(公告)日：2017-08-08

申请号：US14688173

申请日：2015-04-16

Applicant: HFI INNOVATION INC.

Inventor： Yu-Pao Tsai ,  Chih-Ming Fu ,  Jian-Liang Lin ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N19/172 ,  H04N19/513 ,  H04N19/56

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/513

Abstract: The invention provides a motion prediction method. First, a plurality of candidate units corresponding to a current unit of a current frame is determined. A plurality of motion vectors of the candidate units is then obtained. A plurality of scaling factors of the candidate units is then calculated according to a plurality of respective temporal distances depending on a plurality of reference frames of the motion vectors. The motion vectors of the candidate units are then scaled according to the scaling factors to obtain a plurality of scaled motion vectors. The scaled motion vectors are ranked, and a subset of highest ranking motion vectors are identified to be included in a candidate set. Finally, a motion vector predictor for motion prediction of the current unit is then selected from the candidate units.

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：US09641837B2

公开(公告)日：2017-05-02

申请号：US14353025

申请日：2012-11-07

Applicant: HFI Innovation Inc.

Inventor： Tzu-Der Chuang ,  Jian-Liang Lin ,  Ching-Yeh Chen ,  Yi-Wen Chen ,  Yu-Wen Huang

IPC: H04N19/42 ,  H04N19/513 ,  H04N19/52 ,  H04N19/51 ,  H04N19/58 ,  H04N19/567

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/42 ,  H04N19/513 ,  H04N19/567 ,  H04N19/58 ,  H04N19/91

Abstract: A method and apparatus for deriving a scaled MV (motion vector) for a current block based on a candidate MV associated with a candidate block are disclosed. Embodiments according to the present invention increase effective scaling factor of motion vector scaling. In one embodiment, a distance ratio of a first picture distance between a current picture and a target reference picture pointed to by a current motion vector of the current block to a second picture distance between a candidate picture corresponding to the candidate block and a candidate reference picture pointed to by the candidate MV is computed. The scaled MV is then generated based on the candidate MV according to the distance ratio, where the scaled MV has an effective scaling ratio between −m and n, and wherein m and n are positive integers greater than 4. The values of m and n can be 8, 16 or 32.

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：US10477183B2

公开(公告)日：2019-11-12

申请号：US14779655

申请日：2014-07-18

Applicant: HFI Innovation Inc.

Inventor： Yu-Lin Chang ,  Yi-Wen Chen ,  Jian-Liang Lin

IPC: H04N13/172 ,  H04N13/178 ,  H04N13/10 ,  H04N19/46 ,  H04N19/597 ,  H04N19/176 ,  H04N19/187 ,  H04N19/513 ,  H04N19/30

Abstract: A method of three-dimensional video encoding and decoding that adaptively incorporates camera parameters in the video bitstream according to a control flag is disclosed. The control flag is derived based on a combination of individual control flags associated with multiple depth-oriented coding tools. Another control flag can be incorporated in the video bitstream to indicate whether there is a need for the camera parameters for the current layer. In another embodiment, a first flag and a second flag are used to adaptively control the presence and location of camera parameters for each layer or each view in the video bitstream. The first flag indicates whether camera parameters for each layer or view are present in the video bitstream. The second flag indicates camera parameter location for each layer or view in the video bitstream.

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：US10154279B2

公开(公告)日：2018-12-11

申请号：US15832987

申请日：2017-12-06

Applicant: HFI Innovation Inc.

Inventor： Tzu-Der Chuang ,  Jian-Liang Lin ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N7/50 ,  H04N19/52 ,  H04N19/70 ,  H04N19/51 ,  H04N19/593 ,  H04N19/50

Abstract: A method and apparatus for deriving a motion vector predictor (MVP) candidate set for a block are disclosed. Embodiments according to the present invention generate a complete full MVP candidate set based on the redundancy-removed MVP candidate set if one or more redundant MVP candidates exist. In one embodiment, the method generates the complete full MVP candidate set by adding replacement MVP candidates to the redundancy-removed MVP candidate set and a value corresponding to a non-redundant MVP is assigned to each replacement MVP candidate. In another embodiment, the method generates the complete full MVP candidate set by adding replacement MVP candidates to the redundancy-removed MVP candidate set and a value is assigned to each replacement MVP candidate according to a rule. The procedure of assigning value, checking redundancy, removing redundant MVP candidate are repeated until the MVP candidate set is complete and full.

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：US10075692B2

公开(公告)日：2018-09-11

申请号：US14993372

申请日：2016-01-12

Applicant: HFI Innovation Inc.

Inventor： Yi-Wen Chen ,  Jian-Liang Lin

IPC: H04N19/176 ,  H04N19/593 ,  H04N19/597 ,  H04N19/105 ,  H04N19/503 ,  H04N13/00 ,  H04N19/11 ,  H04N19/463

CPC classification number: H04N13/161 ,  H04N13/194 ,  H04N19/11 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593 ,  H04N19/597

Abstract: A method and apparatus for video coding of a block of depth data or texture data using a simple Intra mode is disclosed. The method determines a prediction process selected from a prediction process list for the current block, where the prediction process list comprises at least a single sample mode and at least a simplified Intra prediction mode. If the prediction process selected for the current block corresponds to one single sample mode, encoding or decoding the current block using a single sample value derived from one or more previously decoded pixels for a whole current block. If the prediction process selected for the current block corresponds to one simplified Intra prediction mode, encoding or decoding the current block using Intra prediction signal derived according to a corresponding Intra prediction mode with no residual coding for the current block.

公开(公告)号：US09998760B2

公开(公告)日：2018-06-12

申请号：US14442937

申请日：2013-11-15

Applicant: HFI Innovation Inc.

Inventor： Yi-Wen Chen ,  Jian-Liang Lin

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/52 ,  H04N13/00

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/176 ,  H04N19/52

Abstract: A method and apparatus for three-dimensional video encoding or decoding with conditionally constrained disparity vector are disclosed. In one embodiment, a derived DV (disparity vector) for the current texture block is determined and DV constraint is applied or is not applied to the derived DV to obtain a final derived DV. Inter-view predictive encoding or decoding is then applied to the input data utilizing at least one of selected coding tools, wherein a same final derived DV is used by all selected coding tools, and the selected coding tools comprise inter-view residual prediction, view synthesis prediction and inter-view motion parameter prediction.