公开(公告)号：US20180103260A1

公开(公告)日：2018-04-12

申请号：US15578184

申请日：2016-06-03

Applicant: MEDIATEK INC.

Inventor： Tzu-Der CHUANG ,  Ping CHAO ,  Ching-Yeh CHEN ,  Yu-Chen Sun ,  Chih-Ming WANG ,  Chia-Yun Cheng ,  Han-Liang Chou ,  Yu-Wen Huang

IPC: H04N19/423 ,  H04N19/51

CPC classification number: H04N19/186 ,  H04N19/176 ,  H04N19/423 ,  H04N19/433 ,  H04N19/51 ,  H04N19/593 ,  H04N19/70

Abstract: A method and apparatus of sharing an on-chip buffer or cache memory for a video coding system using coding modes including Inter prediction mode or Intra Block Copy (IntraBC) mode are disclosed. At least partial pre-deblocking reconstructed video data of a current picture is stored in an on-chip buffer or cache memory. If the current block is coded using IntraBC mode, the pre-deblocking reconstructed video data of the current picture stored in the on-chip buffer or cache memory are used to derive IntraBC prediction for the current block. In some embodiments, if the current block is coded using Inter prediction mode, Inter reference video data from the previous picture stored in the on-chip buffer or cache memory are used to derive Inter prediction for the current block. In another embodiment, the motion compensation/motion estimation unit is shared by the two modes.

公开(公告)号：US20180041769A1

公开(公告)日：2018-02-08

申请号：US15670109

申请日：2017-08-07

Applicant: MediaTek Inc.

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

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/44 ,  H04N19/573

CPC classification number: H04N19/513 ,  H04N19/176 ,  H04N19/44 ,  H04N19/573

Abstract: The techniques described herein relate to methods, apparatus, and computer readable media configured to receive compressed video data, wherein the compressed video data is related to a set of frames. A decoder-side predictor refinement technique is used to calculate a new motion vector for a current frame from the set of frames, wherein the new motion vector estimates motion for the current frame based on one or more reference frames. An existing motion vector associated with a different frame from a motion vector buffer is retrieved. The new motion vector is calculated based on the existing motion vector using a decoder-side motion vector prediction technique, such that the existing motion vector is in the motion vector buffer after calculating the new motion vector.

公开(公告)号：US09838688B2

公开(公告)日：2017-12-05

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 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30 ,  H04N19/136

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.

公开(公告)号：US09736487B2

公开(公告)日：2017-08-15

申请号：US14655447

申请日：2014-03-13

Applicant: MediaTek Inc.

Inventor： Ching-Yeh Chen ,  Chih-Wei Hsu ,  Chia-Yang Tsai ,  Yu-Wen Huang

IPC: H04N19/59 ,  H04N19/11 ,  H04N19/182 ,  H04N19/00 ,  H04N19/186 ,  H04N19/593

CPC classification number: H04N19/186 ,  H04N19/11 ,  H04N19/159 ,  H04N19/182 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597 ,  H04N19/82

Abstract: A method for cross-color Intra prediction using the LM Intra mode using multi-row or multi-column neighboring reconstructed pixels for LM parameter derivation or using only top pixels or left pixels of neighboring pixels is disclosed. Multiple LM Intra modes can be used. For example, three LM Intra modes can be used and the LM parameters for the three LM Intra modes can be determined based on only the top pixels, only the left pixels and both the top pixels and left pixels of neighboring reconstructed pixels respectively. To remove the need for additional buffer requirement for deriving the LM parameters based on using multi-row or multi-column neighboring reconstructed pixels, the current method re-uses existing buffers, where the buffers are used for deblocking. A syntax element can be used to indicate one of the multi-LM modes selected.

公开(公告)号：US20160234499A1

公开(公告)日：2016-08-11

申请号：US15132454

申请日：2016-04-19

Applicant: MediaTek Inc.

Inventor： Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen Huang ,  Shaw-Min Lei ,  Chih-Ming FU ,  Chia-Yang TSAI

IPC: H04N19/13 ,  H04N19/154 ,  H04N19/187 ,  H04N19/146

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：US20160191939A1

公开(公告)日：2016-06-30

申请号：US15061213

申请日：2016-03-04

Applicant: MediaTek Inc.

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

IPC: H04N19/513 ,  H04N19/625 ,  H04N19/70 ,  H04N19/119 ,  H04N19/52

CPC classification number: H04N19/513 ,  H04N19/119 ,  H04N19/52 ,  H04N19/625 ,  H04N19/70

Abstract: A method for video coding a current block coded in an Inter, Merge, or Skip mode. The method determines neighboring blocks of the current block, wherein a motion vector predictor (MVP) candidate set is derived from MVP candidates associated with the neighboring blocks. The method determines at least one redundant MVP candidate, if said MVP candidate is within a same PU (Prediction Unit) as another MVP candidate in the MVP candidate set. The method removes said at least one redundant MVP candidate from the MVP candidate set, and provides a modified MVP candidate set for determining a final MVP, wherein the modified MVP candidate set corresponds to the MVP candidate set with said at least one redundant MVP candidate removed. Finally, the method encodes or decodes the current block according to the final MVP. A corresponding apparatus is also provided.

Abstract translation: 用于以Inter，Merge或者Skip模式编码的当前块的视频编码方法。 该方法确定当前块的相邻块，其中从与相邻块相关联的MVP候选中导出运动矢量预测器（MVP）候选集。 如果所述MVP候选在与MVP候选集合中的另一MVP候选者相同的PU（预测单元）内，则该方法确定至少一个冗余MVP候选。 该方法从MVP候选集中移除所述至少一个冗余MVP候选，并且提供用于确定最终MVP的经修改的MVP候选集合，其中修改的MVP候选集合对应于所述至少一个冗余MVP候选者被移除的MVP候选集 。 最后，该方法根据最终的MVP对当前块进行编码或解码。 还提供了相应的装置。

公开(公告)号：US20160173872A1

公开(公告)日：2016-06-16

申请号：US15047943

申请日：2016-02-19

Applicant: MediaTek Inc.

Inventor： Jian-Liang Lin ,  Yi-Wen Chen ,  Yu-Wen Huang ,  Chih-Ming Fu ,  Chi-Ling Wu ,  Yu-Pao Tsai ,  Ching-Yeh Chen ,  Shaw-Min Lei

IPC: H04N19/109 ,  H04N19/184 ,  H04N19/70 ,  H04N19/119 ,  H04N19/147 ,  H04N19/615 ,  H04N19/139 ,  H04N19/177 ,  H04N19/567 ,  H04N19/174 ,  H04N19/52 ,  H04N19/593

CPC classification number: H04N19/109 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/174 ,  H04N19/177 ,  H04N19/184 ,  H04N19/52 ,  H04N19/567 ,  H04N19/593 ,  H04N19/615 ,  H04N19/65 ,  H04N19/70 ,  H04N19/895

Abstract: A method and apparatus for deriving a motion vector predictor (MVP) are disclosed. The MVP is selected from spatial MVP and temporalone or more MVP candidates. The method determines a value of a flag in a video bitstream, where the flag is utilized for selectively disabling use of one or more temporal MVP candidates for motion vector prediction. The method selects, based on an index derived from the video bitstream, the MVP from one or more non-temporal MVP candidates responsive to the flag indicating that said one or more temporal MVP candidates are not to be utilized for motion vector prediction. Further, the method provides the MVP for the current block.

Abstract translation: 公开了一种用于导出运动矢量预测器（MVP）的方法和装置。 MVP是从空间MVP和temporalㄧ或更多MVP候选中选出的。 该方法确定视频比特流中的标志的值，其中该标志用于选择性地禁用一个或多个用于运动矢量预测的时间MVP候选的使用。 该方法基于从视频比特流导出的索引，根据指示所述一个或多个时间MVP候选不用于运动矢量预测的标志从一个或多个非时间MVP候选中选择MVP。 此外，该方法为当前块提供MVP。

公开(公告)号：US20150365680A1

公开(公告)日：2015-12-17

申请号：US14836140

申请日：2015-08-26

Applicant: MediaTek Inc.

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

IPC: H04N19/176 ,  H04N19/167 ,  H04N19/159 ,  H04N19/13

CPC classification number: H04N19/176 ,  H04N19/102 ,  H04N19/13 ,  H04N19/159 ,  H04N19/167 ,  H04N19/463 ,  H04N19/91

Abstract: A method and apparatus of line buffer reduction for context adaptive entropy processing are disclosed. The context formation for context adaptive entropy processing depends on block information associated with one or more neighboring blocks. When a first neighboring block is on an upper side of a horizontal region boundary or on a left side of a vertical region boundary of the region, the block information is replaced by replacement block information to reduce or remove line buffer requirement for storing the block information of neighboring blocks on the other side of the region boundaries from the current block. The context adaptive entropy processing is CABAC encoding, CABAC decoding, CAVLC encoding, or CAVLC decoding.

Abstract translation: 公开了用于上下文自适应熵处理的线路缓冲器减少的方法和装置。 上下文自适应熵处理的上下文形成取决于与一个或多个相邻块相关联的块信息。 当第一相邻块位于水平区域边界的上侧或该区域的垂直区域边界的左侧时，块信息被替换块信息替换以减少或去除用于存储块信息的线路缓冲器要求 在与当前块的区域边界的另一侧上的相邻块的相邻块。 上下文自适应熵处理是CABAC编码，CABAC解码，CAVLC编码或CAVLC解码。

公开(公告)号：US20150195506A1

公开(公告)日：2015-07-09

申请号：US14485817

申请日：2014-09-15

Applicant: MEDIATEK INC.

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

IPC: H04N13/00 ,  H04N19/52 ,  H04N19/70 ,  H04N19/139 ,  H04N19/107 ,  H04N19/176 ,  H04N19/597 ,  H04N19/577

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/597

Abstract: A method of video coding utilizing ARP (advanced residual prediction) by explicitly signaling the temporal reference picture or deriving the temporal reference picture at the encoder and the decoder using identical process is disclosed. To encode or decode a current block in a current picture from a dependent view, a corresponding block in a reference view corresponding to the current block is determined based on a DV (disparity vector). For the encoder side, the temporal reference picture in the reference view of the corresponding block is explicitly signaled using syntax element(s) in the slice header or derived using an identical process as the decoder. For the decoder side, the temporal reference picture in the reference view of the corresponding block is determined according to the syntax element(s) in the slice header or derived using an identical process as the decoder. The temporal reference picture is then used for ARP.

Abstract translation: 公开了一种使用ARP（高级残差预测）的视频编码方法，其通过明确地发信号通知时间参考图片或在编码器和解码器处使用相同的处理来导出时间参考图像。 为了从依赖视图对当前图像中的当前块进行编码或解码，基于DV（视差矢量）来确定对应于当前块的参考视图中的相应块。 对于编码器侧，使用片标题中的语法元素或使用与解码器相同的处理来导出相应块的参考视图中的时间参考图片。 对于解码器侧，相应块的参考视图中的时间参考图片根据片头部中的语法元素确定，或者使用与解码器相同的处理导出。 时间参考图片然后用于ARP。

公开(公告)号：US20150085932A1

公开(公告)日：2015-03-26

申请号：US14388820

申请日：2013-04-09

Applicant: MEDIATEK INC.

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

IPC: H04N19/513 ,  H04N13/00

CPC classification number: H04N19/513 ,  H04N13/161 ,  H04N19/463 ,  H04N19/52 ,  H04N19/597 ,  H04N19/65

Abstract: A method and apparatus for deriving MVP (motion vector predictor) for Skip or Merge mode in 3D video coding are disclosed. In one embodiment, the method comprises determining an MVP candidate set for a selected block and selecting one MVP from an MVP list for motion vector coding of the block. The MVP candidate set may comprise multiple spatial MVP candidates associated with neighboring blocks and one inter-view candidate, and the MVP list is selected from the MVP candidate set. The MVP list may consist of only one MVP candidate or multiple MVP candidates. If only one MVP candidate is used, there is no need to incorporate an MVP index associated with the MVP candidate in the video bitstream corresponding to the three-dimensional video coding. Also, the MVP candidate can be the first available MVP candidate from the MVP candidate set according to a pre-defined order.

Abstract translation: 公开了一种用于在3D视频编码中导出跳跃或合并模式的MVP（运动矢量预测器）的方法和装置。 在一个实施例中，该方法包括确定用于所选块的MVP候选集，并从MVP列表中选择一个MVP用于块的运动矢量编码。 MVP候选集可以包括与相邻块和一个视角间候选相关联的多个空间MVP候选，并且从MVP候选集中选择MVP列表。 MVP列表可以仅由一个MVP候选者或多个MVP候选者组成。 如果仅使用一个MVP候选，则不需要将与MVP候选相关联的MVP索引并入与三维视频编码对应的视频比特流中。 此外，MVP候选者可以根据预定义的顺序从MVP候选集合中选出第一个可用的MVP候选。