公开(公告)号：US10944989B2

公开(公告)日：2021-03-09

申请号：US15561110

申请日：2016-03-31

Applicant: MEDIATEK INC.

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

IPC: H04N19/593 ,  H04N19/96 ,  H04N19/186 ,  H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/122

Abstract: A method and apparatus for Intra prediction of non-square chroma blocks are disclosed. The system uses a block partitioning structure for partitioning a chroma block into one or more final sub-blocks including at least one non-square final sub-block using block partition recursively. The block partition either splits each given block into intermediate sub-blocks using one or more split modes including one binary split mode or applies no splitting to each given block. The block is treated as an initial given block and each intermediate sub-block is treated as one given block in a next recursion. Any given block that is not further split becomes a final sub-block. After the final sub-blocks are determined, non-square Intra prediction is applied to each non-square final sub-block.

公开(公告)号：US10531119B2

公开(公告)日：2020-01-07

申请号：US16203994

申请日：2018-11-29

Applicant: MediaTek Inc.

Inventor： Yu-Chen Sun ,  Jungsun Kim ,  Tzu-Der Chuang ,  Yi-Wen Chen ,  Wang Lin Lai ,  Shan Liu ,  Yu-Wen Huang

IPC: H04N19/182 ,  H04N19/593 ,  H04N19/124 ,  H04N19/176 ,  H04N19/186

Abstract: A method and apparatus for color index coding of a block of video data using index prediction based on reconstructed neighboring pixels are disclosed. In one embodiment, color index encoding or decoding is applied to the current pixel indices by deriving index prediction from neighboring pixel indices of the reconstructed neighboring pixels. The reconstructed neighboring pixel values are first transformed into the neighboring pixel indices according to a quantization table to map between major color indices and major color values of the current block. The quantization table can be based on a major color table for the current block or can also be derived at a decoder side. The decoding process may reconstruct the current pixels by converting decoded current pixel indices to reconstructed current pixel values according to the quantization table or by directly copying the reconstructed neighboring pixel values indicated by decoded current pixel indices.

公开(公告)号：US10477230B2

公开(公告)日：2019-11-12

申请号：US14762873

申请日：2014-04-02

Applicant: MediaTek Inc.

Inventor： Jian-Liang Lin ,  Yi-Wen Chen

IPC: H04N19/513 ,  H04N19/597 ,  H04N19/52 ,  H04N19/176 ,  H04N19/132

Abstract: A method and apparatus for determining a derived disparity vector (DV) directly from associated depth block for motion vector prediction in three-dimensional video encoding or decoding are disclosed. Input data associated with current motion information of a current texture block of a current texture picture in a current dependent view and a depth block associated with the current texture block are received. The derived DV for the current texture block based on the depth block is then determined and used for inter-view or temporal motion vector prediction (MVP). If the current motion information corresponds to inter-view prediction, the current DV is encoded or decoded using the derived DV as a MVP. If the current motion information corresponds to temporal prediction, the current MV is encoded or decoded using a derived MV of a corresponding texture block in a reference view as the MVP.

公开(公告)号：US10412402B2

公开(公告)日：2019-09-10

申请号：US15526076

申请日：2015-12-04

Applicant: MEDIATEK INC.

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

IPC: H04N19/503 ,  H04N19/117 ,  H04N19/82

Abstract: A method and apparatus for applying filter to Intra prediction samples are disclosed. According to an embodiment of the present invention, a filter is applied to one or more prediction samples of the Initial Intra prediction block to form one or more filtered prediction samples. For example, the filter is applied to the prediction sample in the non-boundary locations of the Initial Intra prediction block. Alternatively, the filter is applied to all prediction samples in the Initial Intra prediction block. The filtered Intra prediction block comprising one or more filtered prediction samples is used as a predictor for Intra prediction encoding or decoding of the current block. The filter corresponds to a FIR (finite impulse response) filter or an IIR (infinite impulse response) filter.

公开(公告)号：US10178410B2

公开(公告)日：2019-01-08

申请号：US14433303

申请日：2013-08-29

Applicant: Mediatek Inc.

Inventor： Chih-Ming Fu ,  Yi-Wen Chen ,  Jian-Liang Lin ,  Yu-Wen Huang

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/513 ,  H04N19/187 ,  H04N19/70 ,  H04N19/30

Abstract: A method and apparatus for three-dimensional and scalable video coding are disclosed. Embodiments according to the present invention determine a motion information set associated with the video data, wherein at least part of the motion information set is made available or unavailable conditionally depending on the video data type. The video data type may correspond to depth data, texture data, a view associated with the video data in three-dimensional video coding, or a layer associated with the video data in scalable video coding. The motion information set is then provided for coding or decoding of the video data, other video data, or both. At least a flag may be used to indicate whether part of the motion information set is available or unavailable. Alternatively, a coding profile for the video data may be used to determine whether the motion information is available or not based on the video data type.

公开(公告)号：US10142655B2

公开(公告)日：2018-11-27

申请号：US14762888

申请日：2014-04-11

Applicant: MediaTek Inc.

Inventor： Jian-Liang Lin ,  Kai Zhang ,  Yi-Wen Chen ,  Jicheng An

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/157 ,  H04N19/597 ,  H04N19/105 ,  H04N19/11 ,  H04N19/184 ,  H04N19/159 ,  H04N7/12 ,  H04N19/137

Abstract: A method and apparatus for direct Simplified Depth Coding (dSDC) to derive prediction value directly for each segment without deriving depth prediction samples or depth prediction subsamples. The dSDC method substantially reduces the computations associated with deriving the prediction samples or subsamples and calculating the average of the prediction samples or subsamples by deriving the prediction value directly based on the reconstructed neighboring depth samples. The direct SDC can be applied to derive the two prediction values, P0 and P1 for the two segments of a depth block coded by SDC depth modelling mode 1 (DMM-1).

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：US20150208086A1

公开(公告)日：2015-07-23

申请号：US14433344

申请日：2013-09-27

Applicant: MEDIATEK INC.

Inventor： Yi-Wen Chen ,  Jian-Liang Lin

IPC: H04N19/527 ,  H04N19/182 ,  H04N19/184 ,  H04N19/176

CPC classification number: H04N19/527 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/196 ,  H04N19/197 ,  H04N19/513 ,  H04N19/52 ,  H04N19/597

Abstract: Embodiments of the present invention identify a texture collocated block of a texture picture in the given view corresponding to a current depth block. A Merge candidate, or a motion vector predictor (MVP) or disparity vector predictor (DVP) candidate is derived from a candidate list including a texture candidate derived from motion information of the texture collocated block. Coding or decoding is then applied to the input data associated with the current depth block using the texture candidate if the texture candidate is selected as the Merge candidate in Merge mode or the texture candidate is selected as the MVP or DVP candidate in Inter mode.

Abstract translation: 本发明的实施例在对应于当前深度块的给定视图中识别纹理图像的纹理并置块。 从包括由纹理并置块的运动信息导出的纹理候选的候选列表导出合并候选者或运动矢量预测器（MVP）或视差矢量预测器（DVP）候选者。 然后如果纹理候选被选择为合并模式中的合并候选者或者在Inter模式中选择了纹理候选作为MVP或DVP候选，则将编码或解码应用于与当前深度块相关联的输入数据。

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。