公开(公告)号：US20200260102A1

公开(公告)日：2020-08-13

申请号：US15776154

申请日：2016-11-08

Applicant: MEDIATEK INC.

Inventor： Jian-Liang LIN ,  Tzu-Der CHUANG ,  Yu-Wen HUANG ,  Yi-Wen CHEN

IPC: H04N19/517 ,  H04N19/105 ,  H04N19/159 ,  H04N19/70 ,  H04N19/46 ,  H04N19/176

Abstract: A method and apparatus of priority-based MVP (motion vector predictor) derivation for motion compensation in a video encoder or decoder are disclosed. According to this method, one or more final motion vector predictors (MVPs) are derived using priority-based MVP derivation process. The one or more final MVPs are derived by selecting one or more firstly available MVs from a priority-based MVP list for Inter prediction mode, Skip mode or Merge mode based on reference data of one or two target reference pictures that are reconstructed prior to the current block according to a priority order. Therefore, there is no need for transmitting information at the encoder side nor deriving information at the decoder side that is related to one or more MVP indices to identify the one or more final MVPs in the video bitstream.

公开(公告)号：US20190045224A1

公开(公告)日：2019-02-07

申请号：US16074004

申请日：2017-02-03

Applicant: MEDIATEK INC.

Inventor： Yu-Wen HUANG ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Jian-Liang LIN ,  Yi-Wen CHEN

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/176

Abstract: A method and apparatus of video coding using Non-Local (NL) denoising filter are disclosed. According to the present invention, the decoded picture or the processed-decoded picture is divided into multiple blocks. The NL loop-filter is applied to a target block with NL on/off control to generate a filtered output. The NL loop-filter process comprises determining, for the target block, a patch group consisting of K nearest reference blocks within a search window located in one or more reference regions and deriving one filtered output which could be one block for the target block or one filtered patch group based on pixel values of the target block and pixel values of the patch group. The filtered output is provided for further loop-filter processing if there is any further loop-filter processing or the filtered output is provided for storing in a reference picture buffer if there is no further loop-filter processing.

公开(公告)号：US20180324454A1

公开(公告)日：2018-11-08

申请号：US15772876

申请日：2016-10-28

Applicant: MEDIATEK INC.

Inventor： Jian-Liang LIN ,  Yi-Wen CHEN

IPC: H04N19/52 ,  H04N19/91 ,  H04N19/176 ,  H04N19/159

CPC classification number: H04N19/52 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/91

Abstract: A method and apparatus for video coding utilizing a motion vector predictor (MVP) for a motion vector (MV) for a block are disclosed. According to an embodiment, a mean candidate is derived from at least two candidates in the current candidate list. The mean candidate includes two MVs for the bi-prediction or one MV for the uni-prediction, and at least one MV of the mean candidate is derived as a mean of the MVs of said at least two candidates in one of list 0 and list 1. The mean candidate is added to the current candidate list to form a modified candidate list, and one selected candidate is determined as a MVP or MVPs from the modified candidate list, for current MV or MVs of the current block. The current block is then encoded or decoded in Inter, Merge, or Skip mode utilizing the MVP or MVPs selected.

公开(公告)号：US20150365698A1

公开(公告)日：2015-12-17

申请号：US14762498

申请日：2014-03-26

Applicant: MEDIATEK INC.

Inventor： Jian-Liang LIN ,  Yi-Wen CHEN

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/157 ,  H04N19/597 ,  H04N19/105

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/597

Abstract: A method and apparatus for sample-based Simplified Depth Coding (SDC) are disclosed. The system determines prediction samples for the current depth block based on reconstructed neighboring depth samples according to a selected Intra mode and determines an offset value for the current depth block. The final reconstructed samples are derived by adding the offset value to each of the prediction samples. The offset value corresponds to a difference between a reconstructed depth value and a predicted depth value for the current depth block. The offset value can be derived from the residual value, and the residual value can be derived implicitly at a decoder side or transmitted in the bitstream. The selected Intra mode may correspond to Planar mode, the prediction samples are derived according to the Planar mode.

Abstract translation: 公开了一种用于基于样本的简化深度编码（SDC）的方法和装置。 系统根据所选择的内部模式基于重建的相邻深度样本确定当前深度块的预测样本，并确定当前深度块的偏移值。 通过将偏移值添加到每个预测样本中来导出最终重构样本。 偏移值对应于重建深度值和当前深度块的预测深度值之间的差。 可以从剩余值导出偏移值，并且可以在解码器侧隐式地导出残差值，或者在比特流中发送剩余值。 所选的内部模式可以对应于平面模式，预测样本根据平面模式导出。

公开(公告)号：US20150365649A1

公开(公告)日：2015-12-17

申请号：US14763219

申请日：2014-01-10

Applicant: MEDIATEK INC.

Inventor： Yi-Wen CHEN ,  Na ZHANG ,  Jian-Liang LIN

IPC: H04N13/00 ,  H04N19/51

CPC classification number: H04N13/161 ,  H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/51 ,  H04N19/52 ,  H04N19/597

Abstract: A method and apparatus for three-dimensional video encoding or decoding using an improved refined DV derivation process are disclosed. Embodiments according to the present invention first determine a derived DV (disparity vector) from temporal, spatial, or inter-view neighboring blocks, or any combination thereof of the current block in a dependent view. A refined DV is then determined based on the derived DV when the derived DV exists and is valid. When the derived DV does not exist or is not valid, the refined DV is determined based on a zero DV or a default DV. The derived DV, the zero DV, or the default DV is used respectively to locate a corresponding block in a coded view, and a corresponding depth block in the coded view is used to determine the refined DV.

Abstract translation: 公开了一种使用改进的精细DV推导过程进行三维视频编码或解码的方法和装置。 根据本发明的实施例首先从依赖视图中的当前块的时间，空间或视图间相邻块或其任何组合确定导出的DV（视差矢量）。 然后，当导出的DV存在并且有效时，基于导出的DV来确定精细DV。 当导出的DV不存在或不存在时，精确DV是基于零DV或默认DV来确定的。 分别使用派生DV，零DV或默认DV来定位编码视图中的对应块，并且使用编码视图中的相应深度块来确定精细DV。

公开(公告)号：US20150358636A1

公开(公告)日：2015-12-10

申请号：US14655951

申请日：2013-12-20

Applicant: MEDIATEK INC.

Inventor： Jian-Liang LIN ,  Yi-Wen CHEN

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

CPC classification number: H04N19/513 ,  H04N19/00 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/573 ,  H04N19/58 ,  H04N19/593 ,  H04N19/597

Abstract: A method and apparatus for spatial motion vector prediction (MVP) candidate derivation for Direct mode and Skip mode in three-dimensional video coding are disclosed. The motion vector of each neighboring block is associated with a corresponding reference picture index pointing to a corresponding reference picture. For both the Direct mode and the Skip mode, the motion vector of each neighboring block is selected as the spatial MVP candidate for each neighboring block only if the corresponding reference picture index is the same as a selected target reference picture index. In one embodiment, the target reference picture index is set to 0. In another embodiment, the target reference picture index corresponds to a majority of the corresponding reference picture indexes associated with the neighboring blocks in Direct mode or Skip mode.

Abstract translation: 公开了用于三维视频编码中的直接模式和跳跃模式的空间运动矢量预测（MVP）候选导出的方法和装置。 每个相邻块的运动矢量与指向相应参考图像的相应参考图像索引相关联。 对于直接模式和跳跃模式两者，仅当对应的参考图像索引与所选择的目标参考图像索引相同时，每个相邻块的运动矢量被选择作为每个相邻块的空间MVP候选。 在一个实施例中，目标参考图像索引被设置为0.在另一个实施例中，目标参考图像索引对应于与直接模式或跳过模式中的相邻块相关联的对应参考图像索引的大部分。

公开(公告)号：US20180249172A1

公开(公告)日：2018-08-30

申请号：US15754683

申请日：2016-08-31

Applicant: MEDIATEK INC.

Inventor： Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Yi-Wen CHEN ,  Yu-Chen SUN ,  Yu-Wen HUANG

IPC: H04N19/513 ,  H04N19/182 ,  H04N19/176

CPC classification number: H04N19/513 ,  G06T7/269 ,  H04N19/176 ,  H04N19/182 ,  H04N19/521 ,  H04N19/53 ,  H04N19/54 ,  H04N19/577

Abstract: A method and apparatus of motion compensation using the bi-directional optical flow (BIO) techniques are disclosed. According to one method, the use of BIO is extended to general bi-prediction motion compensation by including the case that two reference pictures correspond to two previously coded pictures. According to another method, the use of BIO is adaptively applied depending on the linearity of the two motion vectors associated with the two reference blocks or depending on block size of the current block. According to yet another method, the refined motion vectors by compensating the original motion vectors with the respective x-offset values and y-offset values are stored in a motion-vector buffer for motion vector prediction of one or more following blocks.

公开(公告)号：US20180131962A1

公开(公告)日：2018-05-10

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 ,  H04N19/186 ,  H04N19/122 ,  H04N19/96

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

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：US20170310986A1

公开(公告)日：2017-10-26

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 ,  H04N19/82 ,  H04N19/117

CPC classification number: 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：US20150381986A1

公开(公告)日：2015-12-31

申请号：US14771561

申请日：2014-04-04

Applicant: MEDIATEK INC.

Inventor： Yi-Wen CHEN ,  Tzu-Der CHUANG ,  Jian-Liang LIN

IPC: H04N19/136 ,  H04N19/513 ,  H04N19/176 ,  H04N13/00 ,  H04N19/597

CPC classification number: H04N19/136 ,  H04N13/161 ,  H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/513 ,  H04N19/597

Abstract: A method and apparatus for deriving aligned inter-view prediction for uni-prediction and bi-prediction in three-dimensional and multi-view coding with illumination compensation enabled are disclosed. When the illumination compensation is enabled, the derivation process for a single reference block in reference list_0 or reference list_1 in the case of uni-prediction is aligned with the derivation process for a reference block in reference list_0 and a reference block in reference list_1 in the case of bi-prediction. The reconstruction process generates the reference block based on a temporal reference block when Inter prediction is used and based on an inter-view reference block when inter-view prediction is used. For the uni-prediction and bi-prediction, the same clipping process can be included in the reconstruction process, the illumination compensation process, or both.

Abstract translation: 公开了一种用于在具有照明补偿的三维和多视图编码中导出用于单一预测和双预测的对准视角间预测的方法和装置。 当启用照明补偿时，在单次预测的情况下，参考列表_0或参考列表1中的单个参考块的导出处理与参考列表中的参考块的引导处理和引用列表中的参考块 双重预测的情况。 当使用Inter预测时，重建处理基于时间参考块，并且当使用视角间预测时基于视角间参考块来生成参考块。 对于单一预测和双预测，可以在重建过程，照明补偿过程或两者中包括相同的剪切过程。