公开(公告)号：US10230961B2

公开(公告)日：2019-03-12

申请号：US15611841

申请日：2017-06-02

Applicant: MEDIATEK INC.

Inventor： Shan Liu ,  Jing Ye ,  Xiaozhong Xu ,  Tzu-Der Chuang ,  Ching-Yeh Chen

IPC: H04N19/159 ,  H04N19/122 ,  H04N19/70 ,  H04N19/96 ,  H04N19/105 ,  H04N19/119 ,  H04N19/11 ,  H04N19/176 ,  H04N19/182

Abstract: A method and apparatus for video coding using template-based Intra prediction are disclosed. According to one method, where determining whether to apply the template-based Intra prediction or one or more parameters associated with the template-based Intra prediction depends on the current block size. According to yet another method, the quad-tree plus binary tree (QTBT) structure is used to partition an image or one or more areas of the current image into blocks. If the template-based Intra prediction is used for a current block and the current block is non-square, the width and height of the L-shaped reference pixel line are determined according to width and height of the current block. The L-shaped reference pixel line comprises a top reference pixel segment above the top template and a left reference pixel segment adjacent to a left side of the left template.

公开(公告)号：US20180352223A1

公开(公告)日：2018-12-06

申请号：US15992140

申请日：2018-05-29

Applicant: MediaTek Inc.

Inventor： Chun-Chia Chen ,  Chih-Wei Hsu ,  Ching-Yeh Chen

IPC: H04N19/105 ,  H04N19/513 ,  H04N19/182

CPC classification number: H04N19/105 ,  H04N19/182 ,  H04N19/513 ,  H04N19/52 ,  H04N19/70

Abstract: A reduced merge candidate signaling method is provided. When building a merge candidate list for a prediction unit (PU) of a block of pixels, a video codec skips or partially skips the construction of some sub-PU merge candidates. The video codec then performs simplified pruning operations on the merge candidate list based on the skipped or partially constructed sub-PU merge candidates. The pruned candidate list is then used to select a merge candidate to encode or decode the block of pixels.

公开(公告)号：US20180184117A1

公开(公告)日：2018-06-28

申请号：US15848154

申请日：2017-12-20

Applicant: MEDIATEK INC.

Inventor： Ching-Yeh Chen ,  Tzu-Der Chuang ,  Chih-Wei Hsu ,  Yu-Wen Huang

IPC: H04N19/577 ,  H04N19/513 ,  H04N19/176 ,  H04N19/109

Abstract: Method and apparatus of video coding using generalized bi-prediction are disclosed. According to one method, the generalized bi-prediction is extended for Decoder-Side Motion Vector Refinement (DMVR), where unequal weighting factor pair is allowed to form the template of the current block or the final predictor. In another method, the generalized bi-prediction is extended to pattern-based MV derivation (PMVD), where unequal weighting factor pair is allowed to combined reference blocks pointed by motion vectors derived based on PMVD. In yet another method, the generalized bi-prediction is used for Merge mode. When the final Merge MVP selected corresponds to bi-prediction using an unequal weighting factor pair, a new weighting factor pair is derived using neighboring reconstructed pixels of the current block and corresponding motion compensated pixels. In yet another method, the size of a set of weighting factor pairs is dependent on block size.

公开(公告)号：US10003810B2

公开(公告)日：2018-06-19

申请号：US14378965

申请日：2013-03-19

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Jian-Liang Lin ,  Yi-Wen Chen ,  Shih-Ta Hsiang ,  Shan Liu ,  Shaw-Min Lei

IPC: H04N19/33 ,  H04N19/52 ,  H04N19/577 ,  H04N19/96

CPC classification number: H04N19/33 ,  H04N19/52 ,  H04N19/577 ,  H04N19/96

Abstract: A method and apparatus for coding video data using Inter prediction mode or Merge mode in a video coding system are disclosed, where the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL), and the EL has higher spatial resolution or better video quality than the BL. In one embodiment, at least one information piece of motion information associated with one or more BL blocks in the BL is identified. A motion vector prediction (MVP) candidate list or a Merge candidate list for the selected block in the EL is then determined, where said at least one information piece associated with said one or more BL blocks in the BL is included in the MVP candidate list or the Merge candidate list. The input data associated with the selected block is coded or decoded using the MVP candidate list or the Merge candidate list.

公开(公告)号：US09813730B2

公开(公告)日：2017-11-07

申请号：US14555901

申请日：2014-11-28

Applicant: MEDIATEK INC.

Inventor： Chih-Wei Hsu ,  Ching-Yeh Chen

IPC: H04N19/513 ,  H04N19/52 ,  H04N19/583 ,  H04N19/567

CPC classification number: H04N19/583 ,  H04N19/567

Abstract: A method and apparatus for deriving fine-grained motion compensated prediction of boundary pixels in a video coding system are disclosed. Embodiments of the present invention determine one or more neighboring coding units (CUs) adjacent to a current coding unit (CU). For each neighboring CU, motion-compensated prediction is derived for each neighboring CU using the MV of the neighboring CU. The pre-generated predictors at a bottom side or a right side of each neighboring CUs are derived and stored on a smallest CU (SCU) basis. The pre-generated predictors and the motion compensated predictor for a current boundary pixel are combined using weighting factors to form a final predictor for the current pixel.

公开(公告)号：US20150341636A1

公开(公告)日：2015-11-26

申请号：US14408947

申请日：2013-04-25

Applicant: MEDIATEK INC.

Inventor： Chia-Yang Tsai ,  Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang

IPC: H04N19/105 ,  H04N19/593 ,  H04N19/186

CPC classification number: H04N19/105 ,  H04N19/136 ,  H04N19/186 ,  H04N19/30 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70

Abstract: A method and apparatus of inter-layer and the inter-view adaptive Intra prediction (IL-AIP and IV-AIP) for a video coding system are disclosed. The video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) for the inter-layer video coding system, and the video data is configured into a Base View (BV) and an Enhancement View (EV) for the inter-view video coding system. The adaptive Intra predictor for the to-be-processed block in the EL or the EV is derived based on the BL or the BV. For inter-layer and inter-view adaptive LM Intra prediction, the LM adaptive Intra predictor for the to-be-processed chroma block in the EL or the EV is derived based on the BL or the BV.

Abstract translation: 公开了一种用于视频编码系统的层间方法和装置以及视频间自适应帧内预测（IL-AIP和IV-AIP）。 视频数据被配置为用于层间视频编码系统的基本层（BL）和增强层（EL），视频数据被配置为基本视图（BV）和增强视图（EV），用于 视频间视频编码系统。 EL或EV中待处理块的自适应Intra预测器基于BL或BV导出。 对于层间和视角间自适应LM帧内预测，​​EL或EV中待处理色度块的LM自适应Intra预测器基于BL或BV导出。

公开(公告)号：US20150163509A1

公开(公告)日：2015-06-11

申请号：US14555901

申请日：2014-11-28

Applicant: MEDIATEK INC.

Inventor： Chih-Wei Hsu ,  Ching-Yeh Chen

IPC: H04N19/513 ,  H04N19/52

CPC classification number: H04N19/583 ,  H04N19/567

Abstract: A method and apparatus for deriving fine-grained motion compensated prediction of boundary pixels in a video coding system are disclosed. Embodiments of the present invention determine one or more neighboring coding units (CUs) adjacent to a current coding unit (CU). For each neighboring CU, motion-compensated prediction is derived for each neighboring CU using the MV of the neighboring CU. The pre-generated predictors at a bottom side or a right side of each neighboring CUs are derived and stored on a smallest CU (SCU) basis. The pre-generated predictors and the motion compensated predictor for a current boundary pixel are combined using weighting factors to form a final predictor for the current pixel.

Abstract translation: 公开了一种用于导出视频编码系统中的边界像素的细粒度运动补偿预测的方法和装置。 本发明的实施例确定与当前编码单元（CU）相邻的一个或多个相邻编码单元（CU）。 对于每个相邻CU，使用相邻CU的MV为每个相邻CU导出运动补偿预测。 每个相邻CU的底部或右侧的预先生成的预测变量被导出并以最小的CU（SCU）存储。 使用加权因子来组合用于当前边界像素的预先生成的预测器和运动补偿预测器，以形成当前像素的最终预测器。

公开(公告)号：US20150124866A1

公开(公告)日：2015-05-07

申请号：US14594158

申请日：2015-01-11

Applicant: MEDIATEK INC.

Inventor： Chih-Ming Fu ,  Ching-Yeh Chen ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N19/117 ,  H04N19/136 ,  H04N19/86 ,  H04N19/182

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82 ,  H04N19/85 ,  H04N19/86

Abstract: A method and apparatus for sample adaptive offset (SAO) compensation of reconstructed video data are disclosed. In one embodiment, the relation between the current pixel and said one or more neighboring pixels is stored so that the SAO compensated current pixel can replace the current pixel without buffering the to-be-processed pixels for classification. The SAO process may be performed on a region by region basis to adapt to the local characteristics of the picture.

Abstract translation: 公开了一种重建视频数据采样自适应偏移（SAO）补偿的方法和装置。 在一个实施例中，存储当前像素和所述一个或多个相邻像素之间的关系，使得SAO补偿的当前像素可以替代当前像素而不缓冲待分析的待处理像素。 可以在逐个区域的基础上执行SAO处理，以适应图像的局部特征。

公开(公告)号：US20140146891A1

公开(公告)日：2014-05-29

申请号：US14114993

申请日：2012-05-31

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shaw-Min Lei ,  Chih-Ming Fu ,  Chia-Yang Tsai

IPC: H04N19/593

CPC classification number: H04N19/13 ,  H04N19/117 ,  H04N19/119 ,  H04N19/146 ,  H04N19/154 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A method and apparatus for scalable video coding are disclosed, wherein the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein the EL has higher spatial resolution or better video quality than the BL. According to embodiments of the present invention, information from the base layer is exploited for coding the enhancement layer. The information coding for the enhancement layer includes CU structure, motion information, motion information, MVP/merge candidates, intra prediction mode, residual quadtree information, texture information, residual information, context adaptive entropy coding, Adaptive Lop Filter (ALF), Sample Adaptive Offset (SAO), and deblocking filter.

Abstract translation: 公开了一种用于可缩放视频编码的方法和装置，其中视频数据被配置为基本层（BL）和增强层（EL），并且其中EL具有比BL更高的空间分辨率或更好的视频质量。 根据本发明的实施例，利用来自基础层的信息来对增强层进行编码。 增强层的信息编码包括CU结构，运动信息，运动信息，MVP /合并候选，帧内预测模式，残余四叉树信息，纹理信息，残差信息，上下文自适应熵编码，自适应Lop滤波器（ALF） 偏移（SAO）和去块滤波器。

公开(公告)号：US11956421B2

公开(公告)日：2024-04-09

申请号：US17609702

申请日：2020-05-07

Applicant: MEDIATEK INC.

Inventor： Man-Shu Chiang ,  Chih-Wei Hsu ,  Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shih-Ta Hsiang

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/137

Abstract: Method and apparatus of video coding are disclosed. According to one method, in the decoder side, a predefined Intra mode is assigned to a neighboring block adjacent to the current luma block when the neighboring block satisfies one or more conditions. An MPM (Most Probable Mode) list is derived based on information comprising at least one of neighboring Intra modes. A current Intra mode is derived utilizing the MPM list. The current luma block is decoded according to the current Intra mode According to another method, a predefined Intra mode is assigned to a neighboring block adjacent to the current luma block if the neighboring block is coded in BDPCM (Block-based Delta Pulse Code Modulation) mode, where the predefined Intra mode is set to horizontal mode or vertical mode depending on prediction direction used by the BDPCM mode.