公开(公告)号：US11178404B2

公开(公告)日：2021-11-16

申请号：US16405246

申请日：2019-05-07

Applicant: MEDIATEK INC.

Inventor： Xiaozhong Xu ,  Shan Liu

IPC: H04N19/159 ,  H04N19/11 ,  H04N19/46 ,  H04N19/196 ,  H04N19/593 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186

Abstract: Aspects of the disclosure include a method for video coding. The method includes receiving input data associated with a current block in an image frame, selecting a reference pixel set from a plurality of candidate neighboring pixel sets adjacent to an edge of the current block, generating an intra predictor of the current block based on the selected reference pixel set and an intra prediction mode of the current block, and encoding or decoding the current block based on the intra predictor to output encoded video data or a decoded block. Each set of the candidate neighboring pixel sets is arranged in parallel with the edge of the current block.

公开(公告)号：US10944997B2

公开(公告)日：2021-03-09

申请号：US16558660

申请日：2019-09-03

Applicant: MEDIATEK INC.

Inventor： Han Huang ,  Shan Liu ,  Chih-Wei Hsu

IPC: H04N19/159 ,  H04N19/82 ,  H04N19/117 ,  H04N19/86 ,  H04N19/137 ,  H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196

Abstract: Aspects of the disclosure provide a method of video coding includes receiving input data associated with a first block and a second block of an image frame. The method further includes identifying a reference size and performing a deblocking process if it is determined that the deblocking process is to be performed. The preforming the deblocking process may include processing pixels adjacent to the block boundary using a first set of deblocking filter settings if a first block size of the first block and a second block size of the second block are greater than the reference size, and processing the pixels using a second set of deblocking filter settings if the first block size or the second block size is not greater than the reference size.

公开(公告)号：US10805620B2

公开(公告)日：2020-10-13

申请号：US15865916

申请日：2018-01-09

Applicant: MEDIATEK INC.

Inventor： Xin Wang ,  Wang Lin Lai ,  Lulin Chen ,  Shan Liu

IPC: H04N19/169 ,  H04N19/167 ,  H04N19/136 ,  H04N19/70 ,  H04N21/81 ,  H04N21/854 ,  H04N21/234 ,  H04N19/103

Abstract: Aspects of the disclosure provide a method and an apparatus for deriving composite tracks. The disclosed apparatus includes a processing circuitry. The processing circuitry is configured to generate a file that includes elementary track boxes respectively for elementary tracks. The elementary track box indexes a sequence of media samples in a time order that forms an elementary track. The processing circuitry is configured to construct a composite track box for a composite track. The composite track box identifies one or more elementary tracks, and a composite operation to form the composite track based on the one or more elementary tracks. The processing circuitry is further configured to generate a media presentation based on the composite track.

公开(公告)号：US10469852B2

公开(公告)日：2019-11-05

申请号：US14422051

申请日：2013-07-30

Applicant: MediaTek Inc.

Inventor： Tzu-Der Chuang ,  Zhenzhong Chen ,  Shan Liu ,  Ching-Yeh Chen ,  Chih-Wei Hsu

IPC: H04N19/187 ,  H04N19/463 ,  H04N19/33 ,  H04N19/36 ,  H04N19/176 ,  H04N19/31 ,  H04N19/50 ,  H04N19/70

Abstract: A method and apparatus for coding video data in a scalable or three-dimensional video coding system are disclosed. In one embodiment, context for the input data associated with an inter-layer or inter-view coding syntax element of a current block in an enhancement-layer (EL) or a dependent view is formed or the input data is parsed to identify the context based on information associated with one or more neighboring blocks, information associated with the current block, or both. In another embodiment, encoding or decoding is applied to the input data associated with the current block in the EL using inter-layer texture prediction based on the BL block in the BL, wherein a flag indicating whether there is any transform coefficient coded for the current block is signaled.

公开(公告)号：US10455254B2

公开(公告)日：2019-10-22

申请号：US15806632

申请日：2017-11-08

Applicant: MEDIATEK INC.

Inventor： Han Huang ,  Shan Liu ,  Chih-Wei Hsu

IPC: H04N19/117 ,  H04N19/167 ,  H04N19/159 ,  H04N19/86 ,  H04N19/105 ,  H04N19/176 ,  H04N19/196 ,  H04N19/137 ,  H04N19/82

Abstract: Aspects of the disclosure provide a method of video coding includes receiving input data associated with a first block and a second block of an image frame. The method further includes identifying a reference size and performing a deblocking process if it is determined that the deblocking process is to be performed. The preforming the deblocking process may include processing pixels adjacent to the block boundary using a first set of deblocking filter settings if a first block size of the first block and a second block size of the second block are greater than the reference size, and processing the pixels using a second set of deblocking filter settings if the first block size or the second block size is not greater than the reference size.

公开(公告)号：US10448049B2

公开(公告)日：2019-10-15

申请号：US15505972

申请日：2015-09-02

Applicant: MEDIATEK INC.

Inventor： Jing Ye ,  Shan Liu ,  Jungsun Kim ,  Wang-Lin Lai ,  Tzu-Der Chuang ,  Yu-Chen Sun ,  Xiaozhong Xu

IPC: H04N19/00 ,  H04N19/593 ,  H04N19/70 ,  H04N19/184 ,  G06F17/27

Abstract: A method for color index coding of blocks in a picture is disclosed. In one embodiment for the decoder side, a current coding mode is parsed from the input coded bitstream for one or more first currently decoded pixels in a current block starting from a first starting position. If the current coding mode corresponds to a generalized copy-previous-row mode, one or more first reference pixels starting from a first starting reference position located at T-th row above the first currently decoded pixels are identified, where T is an integer equal to or greater than one. The first reference pixels starting from the first starting reference position are then used to decode the first currently decoded pixels starting from a first starting position by copying the first reference pixels starting from the first starting reference position respectively. The system may also include a copy-left mode or escape mode.

公开(公告)号：US10432966B2

公开(公告)日：2019-10-01

申请号：US15564205

申请日：2016-04-13

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Shan Liu ,  Xiaozhong Xu

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/105 ,  H04N19/159 ,  H04N19/11 ,  H04N19/70 ,  H04N19/51

Abstract: A method and apparatus of video coding using IntraBC (Intra Block Copy) for video data are disclosed. Restricted prediction is determined, in which one or more selected PU (prediction unit) sizes, PU prediction types or both are disabled or disallowed. Video coding is applied to the current block using coding modes including IntraBC prediction in accordance with the restricted prediction. The selected PU sizes, PU prediction types or both may correspond to 8×8 bi-prediction PU. In one example, the selected PU sizes, PU prediction types or both are disabled or disallowed for the restricted prediction except one or more conditions are determined to be satisfied. The conditions may correspond to at least one of two motion vectors of the 8×8 bi-prediction PU having integer values, the conditions may also correspond to at least one of motion vector components of the 8×8 bi-prediction PU having integer valueIntraBCIntraBCIntraBCIntraBCIntraBC.

公开(公告)号：US20180199044A1

公开(公告)日：2018-07-12

申请号：US15865916

申请日：2018-01-09

Applicant: MEDIATEK INC.

Inventor： Xin Wang ,  Wang Lin Lai ,  Lulin Chen ,  Shan Liu

IPC: H04N19/169 ,  H04N19/167 ,  H04N19/70 ,  H04N19/136

Abstract: Aspects of the disclosure provide a method and an apparatus for deriving composite tracks. The disclosed apparatus includes a processing circuitry. The processing circuitry is configured to generate a file that includes elementary track boxes respectively for elementary tracks. The elementary track box indexes a sequence of media samples in a time order that forms an elementary track. The processing circuitry is configured to construct a composite track box for a composite track. The composite track box identifies one or more elementary tracks, and a composite operation to form the composite track based on the one or more elementary tracks. The processing circuitry is further configured to generate a media presentation based on the composite track.

公开(公告)号：US09955177B2

公开(公告)日：2018-04-24

申请号：US14442925

申请日：2013-10-29

Applicant: MediaTek Inc.

Inventor： Tzu-Der Chuang ,  Zhenzhong Chen ,  Shan Liu ,  Ching-Yeh Chen ,  Chih-Wei Hsu

IPC: H04N19/30 ,  H04N19/105 ,  H04N19/176 ,  H04N19/61 ,  H04N19/52 ,  H04N19/12 ,  H04N19/187 ,  H04N19/50 ,  H04N19/134

CPC classification number: H04N19/30 ,  H04N19/105 ,  H04N19/12 ,  H04N19/134 ,  H04N19/176 ,  H04N19/187 ,  H04N19/50 ,  H04N19/52 ,  H04N19/61

Abstract: Methods of adaptive transform type based on transform unit (TU) size for enhancement layer (EL) coding and multiple motion candidates for EL coding based on corresponding base layer (BL) video data are provided. One method selects a transform type from multiple allowable transform types based on the TU size and applies the selected transform type to the transform units of the inter-layer prediction processed data. Another method derives multiple motion candidates for the EL video data coded in Merge mode or Inter mode based on motion information associated with the corresponding BL video data.

公开(公告)号：US20180075576A1

公开(公告)日：2018-03-15

申请号：US15668836

申请日：2017-08-04

Applicant: MEDIATEK INC.

Inventor： Shan Liu ,  Xiaozhong Xu

IPC: G06T3/00 ,  H04N13/00 ,  G06T3/40

CPC classification number: G06T3/0062 ,  G06T3/4038 ,  G06T2207/20021 ,  H04N13/161

Abstract: Aspects of the disclosure provide a method for packing a two-dimensional (2D) projected image of a spherical image in an omnidirectional video sequence to form a compact image. The method can include receiving a 2D projected image generated by projecting a spherical image of an omnidirectional video onto faces of a platonic solid. The 2D projected image has regions each corresponding to a face of the platonic solid. The method can further include rearranging the regions to form a compact image. At least two nonadjacent regions in the 2D projected image corresponding to two faces that are adjacent to each other along an edge on the platonic solid are arranged to be adjacent to each other along the same edge in the compact image. As a result, continuity between the two nonadjacent regions can be maintained.