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：US10097848B2

公开(公告)日：2018-10-09

申请号：US15312420

申请日：2015-05-22

Applicant: HFI Innovation Inc.

Inventor： Tzu-Der Chuang ,  Yu-Chen Sun ,  Yi-Wen Chen ,  Shan Liu

IPC: H04N19/46 ,  H04N19/186 ,  H04N19/70

Abstract: Methods for palette coding of image and video data to avoid issues associated with zero-size palette or to improve performance by conditionally signaling CU (coding unit)-level escape pixel presence flag are disclosed. In one embodiment, size information related to palette size of a current palette table of the current CU is signaled conditionally based on the escape indication flag, where the escape indication flag indicates whether there is any sample in the current CU coded as an escape pixel. In another embodiment, the CU-level escape pixel presence flag is conditionally signaled according to the current palette size or both of the predicted palette size and the new palette size. Conditionally signaling the palette sharing flag may also be based on the palette sharing flag.

公开(公告)号：US10021367B2

公开(公告)日：2018-07-10

申请号：US14762881

申请日：2014-03-20

Applicant: HFI Innovation Inc.

Inventor： Jian-Liang Lin ,  Yi-Wen Chen

IPC: H04N19/597 ,  H04N19/96 ,  H04N19/176 ,  H04N19/51 ,  H04N13/00 ,  H04N19/61

CPC classification number: H04N13/161 ,  H04N19/176 ,  H04N19/51 ,  H04N19/597 ,  H04N19/61 ,  H04N19/96

Abstract: A method and apparatus of three-dimensional/multi-view coding using a candidate list including a second inter-view candidate in the candidate list for Merge mode, Skip mode or AMVP based (Advanced Motion Vector Prediction based) Inter mode are disclosed. The second inter-view candidate can be derived based on already coded or decoded texture data for the candidate list to include. For example, the second inter-view candidate can be determined from the motion information associated with a corresponding block in a reference view, where the corresponding block is located according to the location of the right-bottom neighboring block and a selected disparity vector. The right-bottom neighboring block is located across from a right-bottom corner of the current texture block. The second inter-view candidate can be inserted into the candidate list only when the number of previous available candidates is smaller than a pre-specified number.

公开(公告)号：US09961369B2

公开(公告)日：2018-05-01

申请号：US14408956

申请日：2013-06-27

Applicant: HFI Innovation Inc.

Inventor： Jian-Liang Lin ,  Yi-Wen Chen ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N19/597 ,  H04N19/52 ,  H04N19/157 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/157 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52

Abstract: A method and apparatus for three-dimensional video encoding or decoding using the disparity vector derived from an associated depth block are disclosed. The method determines an associated depth block for a current texture block and derives a derived disparity vector based on a subset of depth samples of the associated depth block. The subset contains less depth samples than the associated depth block and the subset excludes a single-sample subset corresponding to a center sample of the associated depth block. The derived disparity vector can be used as an inter-view motion (disparity) vector predictor in Inter mode, an inter-view (disparity) candidate in Merge mode or Skip mode. The derived disparity vector can also be used to locate a reference block for inter-view motion prediction in Inter mode, inter-view candidate in Merge or Skip mode, inter-view motion prediction, inter-view disparity prediction, or inter-view residual prediction.

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：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.

公开(公告)号：US10230937B2

公开(公告)日：2019-03-12

申请号：US14908273

申请日：2014-08-13

Applicant: HFI Innovation Inc.

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

IPC: H04N13/00 ,  H04N19/136 ,  H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N13/161 ,  H04N19/597 ,  H04N19/52 ,  H04N19/593

Abstract: A method and apparatus for a three-dimensional or multi-view video encoding or decoding system utilizing unified disparity vector derivation is disclosed. When a three-dimensional coding tool using a derived disparity vector (DV) is selected, embodiments according to the present invention will first obtain the derived DV from one or more neighboring blocks. If the derived DV is available, the selected three-dimensional coding tool is applied to the current block using the derived DV. If the derived DV is not available, the selected three-dimensional coding tool is applied to the current block using a default DV, where the default DV is set to point to an inter-view reference picture in a reference picture list of the current block.

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：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：US09788004B2

公开(公告)日：2017-10-10

申请号：US15123847

申请日：2015-03-12

Applicant: HFI Innovation Inc.

Inventor： Yu-Chen Sun ,  Tzu-Der Chuang ,  Yi-Wen Chen ,  Yu-Wen Huang

IPC: H04N19/50 ,  H04N19/593 ,  H04N19/463 ,  H04N19/105 ,  H04N19/13 ,  H04N19/46 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186

CPC classification number: H04N19/50 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

Abstract: A method of coding a block of video data using palette coding is disclosed. According to the present invention, when a previous block is available, the system receives first information related to a previous palette set corresponding to previous palettes/triplet palette, and second information related to a previous palette predictor set corresponding to previous palette predictors/triplet-palette predictors associated with the previous block. The system then derives a current palette predictor set corresponding to current palette predictors/triplet-palette predictor associated with the current block based on the previous palette set and the previous palette predictor set by including at least one unused color or triplet of the previous palette predictor set in the current palette predictor set. A current palette set corresponding to current palettes/triplet-palette associated with the current block is derived from the current palette predictor set for palette encoding or decoding.