公开(公告)号：US20180276788A1

公开(公告)日：2018-09-27

申请号：US15927028

申请日：2018-03-20

Applicant: MEDIATEK INC.

Inventor： Ya-Hsuan Lee ,  Hung-Chih Lin ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T3/00

Abstract: A video processing method includes receiving an omnidirectional content corresponding to a sphere, generating a projection-based frame according to at least the omnidirectional content and a segmented sphere projection (SSP) format, and encoding, by a video encoder, the projection-based frame to generate a part of a bitstream. The projection-based frame has a 360-degree content represented by a first circular projection face, a second circular projection face, and at least one rectangular projection face packed in an SSP layout. A north polar region of the sphere is mapped onto the first circular projection face. A south polar region of the sphere is mapped onto the second circular projection face. At least one non-polar ring-shaped segment between the north polar region and the south polar region of the sphere is mapped onto said at least one rectangular projection face.

公开(公告)号：US20180262775A1

公开(公告)日：2018-09-13

申请号：US15917844

申请日：2018-03-12

Applicant: MEDIATEK INC.

Inventor： Ya-Hsuan Lee ,  Chia-Ying Li ,  Hung-Chih Lin ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: H04N19/597 ,  H04N5/232 ,  H04N19/59 ,  H04N19/86

CPC classification number: H04N19/597 ,  H04N5/23238 ,  H04N19/563 ,  H04N19/59 ,  H04N19/86

Abstract: A video processing method includes: receiving an omnidirectional content corresponding to a sphere, obtaining projection faces from the omnidirectional content, and creating a projection-based frame by generating at least one padding region and packing the projection faces and said at least one padding region in a 360 VR projection layout. The projection faces packed in the 360 VR projection layout include a first projection face and a second projection face, where there is an image content discontinuity edge between the first projection face and the second projection face if the first projection face connects with the second projection face. The at least one padding region packed in the 360 VR projection layout includes a first padding region, where the first padding region connects with the first projection face and the second projection face for isolating the first projection face from the second projection face in the 360 VR projection layout.

公开(公告)号：US10063873B2

公开(公告)日：2018-08-28

申请号：US14856558

申请日：2015-09-17

Applicant: MEDIATEK INC.

Inventor： Fang-Yi Hsieh ,  Jian-Liang Lin

IPC: H04N7/12 ,  H04N19/44 ,  H04N19/13 ,  H04N21/2343 ,  H04N21/4363 ,  H04N19/132 ,  H04N19/156 ,  H04N19/48 ,  H04N19/59

CPC classification number: H04N19/44 ,  H04N19/13 ,  H04N19/132 ,  H04N19/156 ,  H04N19/48 ,  H04N19/59 ,  H04N21/234363 ,  H04N21/43637

Abstract: A method for adaptively performing video decoding includes: performing decoding complexity management based upon parameter representing processing capability related to the adaptive complexity video decoder, in order to determine whether to reduce decoding complexity of at least one component of a plurality of components within an adaptive complexity video decoder; and selectively reducing decoding complexity of a portion of components within the adaptive complexity video decoder. An associated adaptive complexity video decoder and an associated adaptive audio/video playback system are also provided. In particular, the adaptive complexity video decoder includes a plurality of components and a decoding complexity manager. When needed, the decoding complexity manager delays audio playback of audio information.

公开(公告)号：US20180165886A1

公开(公告)日：2018-06-14

申请号：US15839799

申请日：2017-12-12

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chia-Ying Li ,  Le Shi ,  Ya-Hsuan Lee ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T19/00 ,  G06T15/20 ,  G06T3/00

CPC classification number: G06T19/006 ,  G02B27/017 ,  G06T3/005 ,  G06T9/00 ,  G06T15/205 ,  G06T19/00

Abstract: A video processing method includes: receiving an omnidirectional image/video content corresponding to a viewing sphere, generating a sequence of projection-based frames according to the omnidirectional image/video content and a viewport-based cube projection layout, and encoding the sequence of projection-based frames to generate a bitstream. Each projection-based frame has a 360-degree image/video content represented by rectangular projection faces packed in the viewport-based cube projection layout. The rectangular projection faces include a first rectangular projection face, a second rectangular projection face, a third rectangular projection face, a fourth rectangular projection face, a fifth rectangular projection face, and a sixth rectangular projection face split into partial rectangular projection faces. The first rectangular projection face corresponds to user's viewport, and is enclosed by a surrounding area composed of the second rectangular projection face, the third rectangular projection face, the fourth rectangular projection face, the fifth rectangular projection face, and the partial rectangular projection faces.

公开(公告)号：US20180054613A1

公开(公告)日：2018-02-22

申请号：US15675810

申请日：2017-08-14

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: H04N19/117 ,  H04N19/91 ,  H04N19/172

Abstract: A video encoding method includes: generating reconstructed blocks for coding blocks within a frame, respectively, wherein the frame has a 360-degree image content represented by projection faces arranged in a 360-degree Virtual Reality (360 VR) projection layout, and there is at least one image content discontinuity edge resulting from packing of the projection faces in the frame; and configuring at least one in-loop filter, such that the at least one in-loop filter does not apply in-loop filtering to reconstructed blocks located at the least one image content discontinuity edge.

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。

公开(公告)号：US20150131724A1

公开(公告)日：2015-05-14

申请号：US14601247

申请日：2015-01-21

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Yu-Pao Tsai ,  Shaw-Min Lei

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

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/521 ,  H04N19/54 ,  H04N19/547 ,  H04N19/56 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70

Abstract: A method and apparatus for performing hybrid multihypothesis prediction during video coding of a coding unit includes: processing a plurality of sub-coding units in the coding unit; and performing disparity vector (DV) derivation when the coding unit is processed by a 3D or multi-view coding tool or performing block vector (BV) derivation when the coding unit is processed by intra picture block copy (IntraBC) mode. The step of performing DV or BV derivation includes deriving a plurality of vectors for multihypothesis motion-compensated prediction of a specific sub-coding unit from at least one other sub-coding/coding unit. The one other sub-coding/coding unit is coded before the corresponding DV or BV is derived for multihypothesis motion-compensated prediction of the specific sub-coding unit. A linear combination of a plurality of pixel values derived from the plurality of vectors is used as a predicted pixel value of the specific sub-coding unit.

Abstract translation: 一种用于在编码单元的视频编码期间执行混合多重假设预测的方法和装置包括：处理编码单元中的多个子编码单元; 并且当编码单元被3D或多视图编码工具处理时执行视差矢量（DV）导出，或者当通过帧内图像块复制（IntraBC）模式处理编码单元时执行块向量（BV）导出。 执行DV或BV导出的步骤包括从至少一个其他子编码/编码单元导出用于特定子编码单元的多假设运动补偿预测的多个向量。 在对应的DV或BV被导出用于特定子编码单元的多假设运动补偿预测之前，另一个子编码/编码单元被编码。 将从多个向量导出的多个像素值的线性组合用作特定子编码单元的预测像素值。