公开(公告)号：US20190281273A1

公开(公告)日：2019-09-12

申请号：US16296187

申请日：2019-03-07

Applicant: MEDIATEK INC.

Inventor： Sheng-Yen Lin ,  Jian-Liang Lin

IPC: H04N13/161 ,  H04N19/117 ,  H04N19/82 ,  H04N19/167 ,  H04N19/176 ,  H04N19/597

Abstract: An adaptive loop filtering (ALF) method for a reconstructed projection-based frame includes: obtaining at least one spherical neighboring pixel in a padding area that acts as an extension of a face boundary of a first projection face, and applying adaptive loop filtering to a block in the first projection face. In the reconstructed projection-based frame, there is image content discontinuity between the face boundary of the first projection face and a face boundary of a second projection face. A region on the sphere to which the padding area corresponds is adjacent to a region on the sphere from which the first projection face is obtained. The at least one spherical neighboring pixel is involved in the adaptive loop filtering of the block.

公开(公告)号：US10380715B2

公开(公告)日：2019-08-13

申请号：US15825081

申请日：2017-11-28

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chao-Chih Huang ,  Chia-Ying Li ,  Hui Ou Yang ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  G06T3/60 ,  G06T19/00 ,  G06T1/00 ,  G02B27/01

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 an octahedron projection layout, and encoding, by a video encoder, the sequence of projection-based frames to generate a bitstream. Each projection-based frame has a 360-degree image/video content represented by triangular projection faces packed in the octahedron projection layout. The omnidirectional image/video content of the viewing sphere is mapped onto the triangular projection faces via an octahedron projection of the viewing sphere. An equator of the viewing sphere is not mapped along any side of each of the triangular projection faces.

公开(公告)号：US20190026858A1

公开(公告)日：2019-01-24

申请号：US16143410

申请日：2018-09-26

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Peng Wang ,  LIN LIU ,  Ya-Hsuan Lee ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  G06T19/00 ,  H04N19/182

Abstract: A video processing method includes: obtaining a plurality of projection faces from an omnidirectional content of a sphere, wherein the omnidirectional content of the sphere is mapped onto the projection faces via cubemap projection, and the projection faces comprise a first projection face; obtaining, by a re-sampling circuit, a first re-sampled projection face by re-sampling at least a portion of the first projection face through non-uniform mapping; generating a projection-based frame according to a projection layout of the cubemap projection, wherein the projection-based frame comprises the first re-sampled projection face packed in the projection layout; and encoding the projection-based frame to generate a part of a bitstream.

公开(公告)号：US09525879B2

公开(公告)日：2016-12-20

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: H04N11/02 ,  H04N19/109 ,  H04N19/52 ,  H04N19/65 ,  H04N19/895 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/174 ,  H04N19/177 ,  H04N19/184 ,  H04N19/567 ,  H04N19/593 ,  H04N19/615 ,  H04N19/70

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：US09503751B2

公开(公告)日：2016-11-22

申请号：US14480788

申请日：2014-09-09

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Yi-Wen Chen

IPC: H04N11/02 ,  H04N19/597 ,  H04N19/11 ,  H04N19/593

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/593 ,  H04N19/597

Abstract: A method and apparatus for Simplified Depth Coding (SDC) with extended Intra prediction modes are disclosed. Embodiments of the present invention use an extended Intra prediction mode set including Horizontal mode and Vertical mode. When the Horizontal mode is selected, the prediction samples for the current depth block are derived based on a reconstructed neighboring depth column adjacent to a left block boundary of the current depth block by generating rows of the prediction samples from the reconstructed neighboring depth column. When the Vertical mode is selected, the prediction samples for the current depth block are derived based on a reconstructed neighboring depth row adjacent to a top block boundary of the current depth block by generating columns of the prediction samples from the reconstructed neighboring depth row.

Abstract translation: 公开了一种具有扩展帧内预测模式的简化深度编码（SDC）的方法和装置。 本发明的实施例使用包括水平模式和垂直模式的扩展帧内预测模式集合。 当选择水平模式时，通过从重建的相邻深度列生成预测样本的行，基于与当前深度块的左边界相邻的重建的相邻深度列，导出当前深度块的预测样本。 当选择垂直模式时，通过从重构的相邻深度行生成预测样本的列，基于与当前深度块的顶部块边界相邻的重建的相邻深度行来导出当前深度块的预测样本。

公开(公告)号：US20160007036A1

公开(公告)日：2016-01-07

申请号：US14856558

申请日：2015-09-17

Applicant: MEDIATEK INC.

Inventor： Fang-Yi Hsieh ,  Jian-Liang Lin

IPC: H04N19/44 ,  H04N19/593 ,  H04N19/12 ,  H04N19/577 ,  H04N19/13 ,  H04N19/124

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.

Abstract translation: 一种用于自适应地执行视频解码的方法包括：基于表示与自适应复杂度视频解码器相关的处理能力的参数执行解码复杂度管理，以便确定是否降低自适应复杂度内的多个分量的至少一个分量的解码复杂度 视频解码器; 并且选择性地降低自适应复杂度视频解码器内部分的一部分的解码复杂度。 还提供了相关联的自适应复杂视频解码器和相关联的自适应音频/视频播放系统。 具体地，自适应复杂度视频解码器包括多个组件和解码复杂度管理器。 当需要时，解码复杂度管理器延迟音频信息的音频回放。

公开(公告)号：US20150326876A1

公开(公告)日：2015-11-12

申请号：US14804484

申请日：2015-07-21

Applicant: MediaTek Inc.

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

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/577 ,  H04N19/109

CPC classification number: H04N19/577 ,  H04N19/109 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61

Abstract: An apparatus and method for temporal motion vector prediction for a current block in a picture are disclosed. In the present method, one temporal block in a first reference picture in a first list selected from a list group comprising list 0 and list 1 is determined. When the determined temporal block has at least one motion vector, a candidate set is determined based on the motion vector of the temporal block. The temporal motion vector predictor or temporal motion vector predictor candidate or temporal motion vector or temporal motion vector candidate for the current block is determined from the candidate set by checking a presence of a motion vector pointing to a reference picture in a first specific list in said at least one motion vector, wherein the first specific list is selected from the list group based on a priority order.

Abstract translation: 公开了一种用于图片中的当前块的时间运动矢量预测的装置和方法。 在本方法中，确定从包括列表0和列表1的列表组中选择的第一列表中的第一参考图片中的一个时间块。 当确定的时间块具有至少一个运动矢量时，基于时间块的运动矢量来确定候选组。 通过检查指向所述第一特定列表中的参考图片的运动矢量的存在，从所述候选组中确定当前块的时间运动矢量预测器或时间运动矢量预测器候选或时间运动矢量或时间运动矢量候选 至少一个运动矢量，其中基于优先级顺序从所述列表组中选择所述第一特定列表。

公开(公告)号：US09118929B2

公开(公告)日：2015-08-25

申请号：US14601247

申请日：2015-01-21

Applicant: MEDIATEK INC.

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

IPC: H04N19/52 ,  H04N19/597 ,  H04N19/513 ,  H04N7/12

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。

公开(公告)号：US20150201216A1

公开(公告)日：2015-07-16

申请号：US14412203

申请日：2013-07-05

Applicant: MEDIATEK INC.

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

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/513 ,  H04N19/176

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513

Abstract: A method and apparatus for three-dimensional video coding or multi-view video coding are disclosed. Embodiments according to the present invention derive a unified disparity vector from depth information for Inter mode and Skip/Direct mode. The unified disparity vector is derived from a subset of depth samples in an associated depth block corresponding to the current block using a unified derivation method. The unified derivation method is applied in Inter mode, Skip mode, or Direct mode when a disparity vector derived from depth data is required for encoding or decoding. The unified disparity vector can also be applied to derive a disparity vector for locating a corresponding block, and thus an inter-view motion vector candidate can be determined for Skip mode or Direct mode.

Abstract translation: 公开了一种用于三维视频编码或多视点视频编码的方法和装置。 根据本发明的实施例从Inter模式和Skip / Direct模式的深度信息导出统一的视差矢量。 使用统一的导出方法，从与当前块相对应的相关深度块中的深度样本的子集导出统一的视差矢量。 当需要从深度数据导出的视差矢量进行编码或解码时，统一推导方法应用于Inter模式，跳过模式或直接模式。 统一的视差矢量也可以应用于导出用于定位相应块的视差矢量，因此可以为跳跃模式或直接模式确定视角间的运动矢量候选。

公开(公告)号：US20150201214A1

公开(公告)日：2015-07-16

申请号：US14408956

申请日：2013-06-27

Applicant: MEDIATEK INC.

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

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/513 ,  H04N19/176

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/157 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52

Abstract: A method and apparatus for three-dimensional video encoding or decoding using the disparity vector derived from an associated depth block are disclosed. The method determines an associated depth block for a current texture block and derives a derived disparity vector based on a subset of depth samples of the associated depth block. The subset contains less depth samples than the associated depth block and the subset excludes a single-sample subset cprresponding to a center sample of the associated depth block. The derived disparity vector can be used as an inter-view motion (disparity) vector predictor in Inter mode, an inter-view (disparity) candidate in Merge mode or Skip mode. The derived disparity vector can also be used to locate a reference block for inter-view motion prediction in Inter mode, inter-view candidate in Merge or Skip mode, inter-view motion prediction, inter-view disparity prediction, or inter-view residual prediction.

Abstract translation: 公开了使用从相关深度块导出的视差矢量进行三维视频编码或解码的方法和装置。 该方法确定当前纹理块的相关深度块，并且基于相关深度块的深度样本的子集导出导出的视差向量。 该子集包含比相关联的深度块更少的深度样本，并且子集排除对应于相关深度块的中心样本的单样本子集cpr。 导出的视差矢量可以用作Inter模式中的视角间运动（视差）矢量预测器，合并模式或跳跃模式下的视差（视差）候选者。 导出的视差矢量也可以用于定位Inter模式下的视角间运动预测的参考块，合并或跳过模式的视角间候选，视角间运动预测，视角间视差预测或视角间残差 预测。