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：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。

公开(公告)号：US20150124869A1

公开(公告)日：2015-05-07

申请号：US14598638

申请日：2015-01-16

Applicant: MEDIATEK INC.

Inventor： Chih-Ming Fu ,  Ching-Yeh Chen ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N19/167 ,  H04N19/117 ,  H04N19/182

CPC classification number: H04N19/61 ,  H04N19/117 ,  H04N19/119 ,  H04N19/14 ,  H04N19/162 ,  H04N19/167 ,  H04N19/174 ,  H04N19/179 ,  H04N19/182 ,  H04N19/192 ,  H04N19/439 ,  H04N19/70 ,  H04N19/82 ,  H04N19/85 ,  H04N19/96

Abstract: An apparatus and method for sample adaptive offset (SAO) to restore intensity shift of processed video data are disclosed. In an encoder side, the processed video data corresponding to reconstructed video data, deblocked-reconstructed video data, or adaptive loop filtered and deblocked-reconstructed video data are partitioned into regions smaller than a picture. The region partition information is signaled in a video bitstream located in a position before intensity offset values syntax. At the decoder side, the processed video data is partitioned into regions according to the partition information parsed from the bitstream at a position before intensity offset values syntax. Region-based SAO is applied to each region based on the intensity offset for the category of the region-based SAO type selected.

Abstract translation: 公开了一种用于恢复已处理视频数据的强度偏移的采样自适应偏移（SAO）的装置和方法。 在编码器侧，对应于重构的视频数据，解块重构的视频数据或自适应环路滤波和解块重构的视频数据的经处理的视频数据被划分为小于图像的区域。 区域分区信息在位于强度偏移值语法之前的视频比特流中被发信号。 在解码器侧，根据在强度偏移值语法之前的位置处从比特流解析的分区信息将经处理的视频数据分割成区域。 基于所选择的基于区域的SAO类别的类别的强度偏移，将基于区域的SAO应用于每个区域。

公开(公告)号：US20150098513A1

公开(公告)日：2015-04-09

申请号：US14403186

申请日：2013-04-02

Applicant: MEDIATEK INC.

Inventor： Chih-Ming Fu ,  Yu-Wen Huang ,  Chih-Wei Hsu ,  Shaw-Min Lei

IPC: H04N19/70 ,  H04N19/44

CPC classification number: H04N19/70 ,  H04N19/13 ,  H04N19/44 ,  H04N19/86 ,  H04N19/91

Abstract: A method and apparatus for sharing context among different SAO syntax elements for a video coder are disclosed. Embodiments of the present invention apply CABAC coding to multiple SAO syntax elements according to a joint context model, wherein the multiple SAO syntax elements share the joint context. The multiple SAO syntax elements may correspond to SAO merge left flag and SAO merge up flag. The multiple SAO syntax elements may correspond to SAO merge left flags or merge up flags associated with different color components. The joint context model can be derived based on joint statistics of the multiple SAO syntax elements. Embodiments of the present invention code the SAO type index using truncated unary binarization, using CABAC with only one context, or using CABAC with context mode for the first bin associated with the SAO type index and with bypass mode for any remaining bin.

Abstract translation: 公开了一种用于在视频编码器的不同SAO语法元素之间共享上下文的方法和装置。 本发明的实施例根据联合上下文模型将CABAC编码应用于多个SAO语法元素，其中多个SAO语法元素共享联合上下文。 多个SAO语法元素可以对应于SAO合并左标志和SAO合并标志。 多个SAO语法元素可以对应于SAO合并左旗标或与不同颜色分量相关联的合并标志。 联合上下文模型可以基于多个SAO语法元素的联合统计来导出。 本发明的实施例使用截断的一元二进制编码SAO类型索引，使用仅具有一个上下文的CABAC，或者使用具有与SAO类型索引相关联的第一bin的上下文模式的CABAC，以及对于任何剩余的bin来说具有旁路模式。

公开(公告)号：US20140219357A1

公开(公告)日：2014-08-07

申请号：US14239302

申请日：2012-10-18

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Jian-Liang Lin ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N19/51 ,  H04N19/583

CPC classification number: H04N19/52 ,  H04N19/50 ,  H04N19/51 ,  H04N19/593 ,  H04N19/70

Abstract: A method and apparatus for deriving a motion vector predictor (MVP) candidate set for a block are disclosed. Embodiments according to the present invention generate a complete full MVP candidate set based on the redundancy-removed MVP candidate set if one or more redundant MVP candidates exist. In one embodiment, the method generates the complete full MVP candidate set by adding replacement MVP candidates to the redundancy-removed MVP candidate set and a value corresponding to a non-redundant MVP is assigned to each replacement MVP candidate. In another embodiment, the method generates the complete full MVP candidate set by adding replacement MVP candidates to the redundancy-removed MVP candidate set and a value is as signed to each replacement MVP candidate according to a rule. The procedure of assigning value, checking redundancy, removing redundant MVP candidate are repeated until the MVP candidate set is complete and full.

Abstract translation: 公开了一种用于导出用于块的运动矢量预测器（MVP）候选集的方法和装置。 如果存在一个或多个冗余MVP候选者，则根据本发明的实施例基于冗余删除的MVP候选集来生成完整的完整MVP候选集。 在一个实施例中，该方法通过将替换MVP候选添加到冗余删除的MVP候选集中来生成完整的完整MVP候选集，并且将对应于非冗余MVP的值分配给每个替换MVP候选。 在另一个实施例中，该方法通过将替换MVP候选添加到冗余删除的MVP候选集中并根据规则将值与签名的每个替换MVP候选来生成完整的完整MVP候选集。 重复分配值，检查冗余，删除冗余MVP候选的过程，直到MVP候选集完成并满。

公开(公告)号：US20140198844A1

公开(公告)日：2014-07-17

申请号：US14239349

申请日：2012-10-19

Applicant: MEDIATEK INC.

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

IPC: H04N19/117 ,  H04N19/154

CPC classification number: H04N19/70 ,  H04N19/117 ,  H04N19/154 ,  H04N19/174 ,  H04N19/436 ,  H04N19/82

Abstract: A method and apparatus for loop filter processing of video data are disclosed. Embodiments according to the present invention eliminate data dependency associated with loop processing across tile boundaries. According to one embodiment, loop processing is reconfigured to eliminate data dependency across tile boundaries if cross-tile loop processing is disabled. The loop filter processing corresponds to DF (deblocking filter), SAO (Sample Adaptive Offset) processing or ALF (Adaptive Loop Filter) processing. The processing can be skipped for at least one tile boundary. In another embodiment, data padding based on the pixels of the current tile or modifying pixel classification footprint are used to eliminate data dependency across the tile boundary. Whether cross-tile loop processing is disabled can be indicated by a flag coded at sequence, picture, or slice level to indicate whether the data dependency across said at least one tile boundary is allowed.

Abstract translation: 公开了一种用于视频数据的环路滤波处理的方法和装置。 根据本发明的实施例消除了跨越块边界的循环处理相关的数据依赖性。 根据一个实施例，如果禁止跨平铺环路处理，则重新配置循环处理以消除跨块边界的数据依赖性。 环路滤波处理对应于DF（去块滤波器），SAO（采样自适应偏移）处理或ALF（自适应环路滤波器）处理。 可以跳过至少一个瓦片边界的处理。 在另一个实施例中，使用基于当前瓦片的像素或修改像素分类覆盖区的数据填充来消除跨平铺边界的数据依赖性。 可以通过在序列，图片或切片级别编码的标志来指示是否禁止交叉平铺循环处理，以指示是否允许跨所述至少一个瓦片边界的数据依赖。

公开(公告)号：US11956421B2

公开(公告)日：2024-04-09

申请号：US17609702

申请日：2020-05-07

Applicant: MEDIATEK INC.

Inventor： Man-Shu Chiang ,  Chih-Wei Hsu ,  Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shih-Ta Hsiang

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/137

Abstract: Method and apparatus of video coding are disclosed. According to one method, in the decoder side, a predefined Intra mode is assigned to a neighboring block adjacent to the current luma block when the neighboring block satisfies one or more conditions. An MPM (Most Probable Mode) list is derived based on information comprising at least one of neighboring Intra modes. A current Intra mode is derived utilizing the MPM list. The current luma block is decoded according to the current Intra mode According to another method, a predefined Intra mode is assigned to a neighboring block adjacent to the current luma block if the neighboring block is coded in BDPCM (Block-based Delta Pulse Code Modulation) mode, where the predefined Intra mode is set to horizontal mode or vertical mode depending on prediction direction used by the BDPCM mode.

公开(公告)号：US11805245B2

公开(公告)日：2023-10-31

申请号：US17874009

申请日：2022-07-26

Applicant: MediaTek Inc.

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

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/182 ,  H04N19/136

CPC classification number: H04N19/105 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182

Abstract: For each prediction candidate of a set of one or more prediction candidates of the current block, a video coder computes a matching cost between a set of reference pixels of the prediction candidate in a reference picture and a set of neighboring pixels of a current block in a current picture. The video coder identifies a subset of the reference pictures as major reference pictures based on a distribution of the prediction candidates among the reference pictures of the current picture. A bounding block is defined for each major reference picture, the bounding block encompassing at least portions of multiple sets of reference pixels for multiple prediction candidates. The video coder assigns an index to each prediction candidate based on the computed matching cost of the set of prediction candidates. A selection of a prediction candidate is signaled by using the assigned index of the selected prediction candidate.

公开(公告)号：US11743458B2

公开(公告)日：2023-08-29

申请号：US17286713

申请日：2019-10-18

Applicant: MEDIATEK INC.

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

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80

Abstract: Methods and apparatus for in-loop processing of reconstructed video are disclosed. According to one method, a virtual boundary is determined for to-be-processed pixels in the current picture, where the virtual boundary is aligned with block boundaries and at least one to-be-processed pixel on a first side of the virtual boundary requires one or more second pixels on a second side of the virtual boundary. According to the method, the in-loop processing is modified if a target to-be-processed pixel requires at least one second pixel from the second side of the virtual boundary and the modified in-loop processing eliminates the need for any second pixel on the second side of the virtual boundary. According to another method, the operations of block classification are changed when part of the required pixels in one 10×10 window used in classification are at the other side of virtual boundaries.