公开(公告)号：US20170302929A1

公开(公告)日：2017-10-19

申请号：US15485694

申请日：2017-04-12

Applicant: MEDIATEK INC.

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

IPC: H04N19/117 ,  H04N19/80 ,  H04N19/176 ,  H04N19/107 ,  H04N19/139 ,  H04N19/126 ,  H04N19/86 ,  H04N19/186

CPC classification number: H04N19/117 ,  H04N19/107 ,  H04N19/126 ,  H04N19/139 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86

Abstract: Aspects of the disclosure provide a method for denoising a reconstructed picture. The method can include receiving reconstructed video data corresponding to a picture, dividing the picture into current patches, forming patch groups each including a current patch and a number of reference patches that are similar to the current patch, denoising the patch groups to modify pixel values of the patch groups to create a filtered picture, and generating a reference picture based on the filtered picture for encoding or decoding a picture. The operation of denoising the patch groups includes deriving a variance of compression noise in the respective patch group based on a compression noise model. A selection of model parameters is determined based on coding unit level information.

公开(公告)号：US20160173905A1

公开(公告)日：2016-06-16

申请号：US15053207

申请日：2016-02-25

Applicant: MediaTek Inc.

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

IPC: H04N19/52 ,  H04N19/56 ,  H04N19/533

CPC classification number: H04N19/52 ,  H04N19/533 ,  H04N19/56

Abstract: A method for deriving a motion vector predictor (MVP) receives motion vectors (MVs) associated with reference blocks of the current block. The method determines at least one first spatial search MV associated with a first MV searching order and at least one second spatial search MV associated with a second MV searching order for each neighboring reference block. Then, the method determines whether a first available-first spatial search MV exists for said at least one neighboring reference block according to the first MV searching order, and provides the first available-first spatial search MV as a spatial MVP for the current block. Finally, the method determines whether a first available-second spatial search MV exists for said at least one neighboring reference block according to the second MV searching order only if none of first spatial search MVs for said at least one neighboring reference block is available.

Abstract translation: 用于导出运动矢量预测器（MVP）的方法接收与当前块的参考块相关联的运动矢量（MV）。 该方法确定与第一MV搜索顺序相关联的至少一个第一空间搜索MV和与每个相邻参考块的第二MV搜索顺序相关联的至少一个第二空间搜索MV。 然后，该方法根据第一MV搜索顺序确定对于所述至少一个相邻参考块是否存在第一可用第一空间搜索MV，并且提供第一可用第一空间搜索MV作为当前块的空间MVP。 最后，如果所述至少一个相邻参考块的第一空间搜索MV都不可用，则该方法根据第二MV搜索顺序来确定是否存在针对所述至少一个相邻参考块的第一可用第二空间搜索MV。

公开(公告)号：US09237349B2

公开(公告)日：2016-01-12

申请号：US14623599

申请日：2015-02-17

Applicant: MEDIATEK INC.

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

IPC: H04N7/32 ,  H04N19/82 ,  H04N19/117 ,  H04N19/70 ,  H04N19/172 ,  H04N19/174 ,  H04N19/86 ,  H04N19/136

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: A method and apparatus for sharing information in a video decoding system are disclosed. The method derives reconstructed data for a picture from a bitstream, where the picture is partitioned into multiple slices. An information-sharing flag is parsed from the bitstream associated with a current reconstructed slice. If the information-sharing flag indicates information sharing, shared information is determined from a part of the bitstream not corresponding to the current reconstructed slice, and in-loop filtering process is applied to the current reconstructed slice according to the shared information. If the information-sharing flag indicates filter no information sharing, individual information is determined from a part of the bitstream corresponding to the current reconstructed slice, and in-loop filtering process is applied to the current reconstructed slice according to the individual information. A method for a corresponding encoder is also disclosed.

Abstract translation: 公开了一种用于在视频解码系统中共享信息的方法和装置。 该方法从比特流中导出图像的重构数据，其中图像被分割成多个切片。 从与当前重建切片相关联的比特流中解析信息共享标志。 如果信息共享标志指示信息共享，则从不与当前重构片相对应的比特流的一部分确定共享信息，并且根据共享信息将当前重构切片应用到环路滤波处理。 如果信息共享标志指示无过滤器信息共享，则从与当前重构切片相对应的比特流的一部分确定个体信息，并且根据个体信息将当前重建的切片应用于环路内过滤处理。 还公开了一种对应的编码器的方法。

公开(公告)号：US20150281708A1

公开(公告)日：2015-10-01

申请号：US14378965

申请日：2013-03-19

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Jian-Liang Lin ,  Yi-Wen Chen ,  Shih-Ta Hsiang ,  Shan Liu ,  Shaw-Min Lei

IPC: H04N19/33 ,  H04N19/577 ,  H04N19/52

CPC classification number: H04N19/33 ,  H04N19/52 ,  H04N19/577 ,  H04N19/96

Abstract: A method and apparatus for coding video data using Inter prediction mode or Merge mode in a video coding system are disclosed, where the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL), and the EL has higher spatial resolution or better video quality than the BL. In one embodiment, at least one information piece of motion information associated with one or more BL blocks in the BL is identified. A motion vector prediction (MVP) candidate list or a Merge candidate list for the selected block in the EL is then determined, where said at least one information piece associated with said one or more BL blocks in the BL is included in the MVP-candidate list or a Merge candidate MVP candidate list or the Merge candidate list. The input data associated with the selected block is coded or decoded using the MVP candidate list or the Merge candidate list.

Abstract translation: 公开了一种在视频编码系统中使用帧间预测模式或合并模式对视频数据进行编码的方法和装置，其中将视频数据配置为基本层（BL）和增强层（EL），并且EL具有较高的空间 分辨率或更好的视频质量比BL。 在一个实施例中，识别与BL中的一个或多个BL块相关联的运动信息的至少一个信息片段。 然后确定EL中所选块的运动矢量预测（MVP）候选列表或合并候选列表，其中与BL中的所述一个或多个BL块相关联的所述至少一个信息片段被包括在MVP候选中 列表或合并候选MVP候选列表或合并候选列表。 与所选择的块相关联的输入数据使用MVP候选列表或合并候选列表进行编码或解码。

公开(公告)号：US20150201215A1

公开(公告)日：2015-07-16

申请号：US14411503

申请日：2013-07-25

Applicant: MEDIATEK INC.

Inventor： Yi-Wen Chen ,  Jian-Liang Lin ,  Jicheng An ,  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 ,  H04N19/172 ,  H04N19/176 ,  H04N19/463 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70

Abstract: A method for three-dimensional video encoding or decoding are disclosed. In one embodiment, the method constrains the disparity vector (DV) to generate a constrained DV, wherein horizontal, vertical, or both components of the constrained DV is constrained to be zero or within a range from M to N units of DV precision, and M and N are integers. In another embodiment, a derived DV for DV based motion-compensated-prediction is determined from a constrained neighboring block set of the current block. In yet another embodiment, a derived disparity vector is derived to replace an inter-view Merge candidate if the inter-view Merge candidate of the current block is not available or not valid. In yet another embodiment, a DV difference (DVD) or a motion vector difference (MVD) for the current block is determined according to a DV and the DVD/MVP is constrained to be zero or within a range.

Abstract translation: 公开了一种用于三维视频编码或解码的方法。 在一个实施例中，该方法约束视差矢量（DV）以产生受约束的DV，其中约束DV的水平，垂直或两个分量被约束为零或在从M到N个DV精度的范围内，以及 M和N是整数。 在另一个实施例中，从当前块的约束相邻块集合确定用于基于DV的运动补偿预测的导出DV。 在另一个实施例中，如果当前块的视图间合并候选不可用或不可用，则导出导出的视差向量来替换视角间合并候选。 在另一个实施例中，根据DV确定当前块的DV差（DVD）或运动矢量差（MVD），并且将DVD / MVP约束为零或在一个范围内。

公开(公告)号：US20150163488A1

公开(公告)日：2015-06-11

申请号：US14623599

申请日：2015-02-17

Applicant: MEDIATEK INC.

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

IPC: H04N19/117 ,  H04N19/174 ,  H04N19/136 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: A method and apparatus for sharing information in a video decoding system are disclosed. The method derives reconstructed data for a picture from a bitstream, where the picture is partitioned into multiple slices. An information-sharing flag is parsed from the bitstream associated with a current reconstructed slice. If the information-sharing flag indicates information sharing, shared information is determined from a part of the bitstream not corresponding to the current reconstructed slice, and in-loop filtering process is applied to the current reconstructed slice according to the shared information. If the information-sharing flag indicates filter no information sharing, individual information is determined from a part of the bitstream corresponding to the current reconstructed slice, and in-loop filtering process is applied to the current reconstructed slice according to the individual information. A method for a corresponding encoder is also disclosed.

Abstract translation: 公开了一种用于在视频解码系统中共享信息的方法和装置。 该方法从比特流中导出图像的重构数据，其中图像被分割成多个切片。 从与当前重建切片相关联的比特流中解析信息共享标志。 如果信息共享标志指示信息共享，则从不与当前重构片相对应的比特流的一部分确定共享信息，并且根据共享信息将当前重构切片应用到环路滤波处理。 如果信息共享标志指示无过滤器信息共享，则从与当前重构切片相对应的比特流的一部分确定个体信息，并且根据个体信息将当前重建的切片应用于环路内过滤处理。 还公开了一种对应的编码器的方法。

公开(公告)号：US20150139325A1

公开(公告)日：2015-05-21

申请号：US14406529

申请日：2013-06-13

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Yu-Wen Huang ,  Ching-Yeh Chen ,  Chia-Yang Tsai ,  Chih-Ming Fu ,  Shih-Ta Hsiang

IPC: H04N19/30 ,  H04N19/52 ,  H04N19/50

CPC classification number: H04N19/30 ,  H04N19/31 ,  H04N19/33 ,  H04N19/36 ,  H04N19/50 ,  H04N19/51 ,  H04N19/52 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593

Abstract: A method and apparatus for inter-layer prediction for scalable video coding are disclosed. Embodiments of the present invention utilize weighted prediction for scalable coding. The weighted prediction is based on the predicted texture data and the inter-layer Intra prediction data derived from BL reconstructed data. The inter-layer Intra prediction data corresponds to the BL reconstructed data or up-sampled BL reconstructed data. The predicted texture data corresponds to spatial Intra prediction data or motion-compensated prediction data based on the second EL video data in the same layer as the current EL picture. Embodiments of the present invention also utilize the reference picture list including an inter-layer reference picture (ILRP) corresponding to BL reconstructed texture frame or up-sampled BL reconstructed texture frame for Inter prediction of EL video data. The motion vector is limited to a range around (0,0) when the ILRP is selected as a reference picture.

Abstract translation: 公开了一种用于可分级视频编码的层间预测的方法和装置。 本发明的实施例利用可扩展编码的加权预测。 加权预测基于从BL重建数据导出的预测纹理数据和层间Intra预测数据。 层内帧内预测数据对应于BL重构数据或上采样BL重构数据。 预测纹理数据对应于基于与当前EL图像相同的层中的第二EL视频数据的空间帧内预测数据或运动补偿预测数据。 本发明的实施例还使用包括对应于BL重构纹理帧或上采样BL重建纹理帧的层间参考图片（ILRP）的参考图片列表，用于EL视频数据的帧间预测。 当选择ILRP作为参考图像时，运动矢量被限制在大约（0,0）的范围内。

公开(公告)号：US20150010055A1

公开(公告)日：2015-01-08

申请号：US14371404

申请日：2012-11-16

Applicant: MEDIATEK INC.

Inventor： Chih-Wei Hsu ,  Tzu-Der Chuang ,  Yu-Wen Huang

IPC: H04N19/13 ,  H04N19/196 ,  H04N19/18

CPC classification number: H04N19/196 ,  H04N19/13 ,  H04N19/18 ,  H04N19/463 ,  H04N19/91

Abstract: A method and apparatus for significance map coding for 4×4 TUs (transform units) and 8×8 TUs of video data are disclosed. The method comprises receiving at least one context selection table for a first TU associated with a first color component and generating a derived context selection table for a second TU associated with a second color component from said at least one context selection table. The first TU has a first size comprising of 4×4 and 8×8. The second TU has a second size comprising of 4×4 and 8×8. The second size is different from the first size, the second color component is different from the first color component, or both the second size is different from the first size and the second color component is different from the first color component. The derived context selection table is then used for significance map processing of the second TU.

Abstract translation: 公开了一种用于4×4TU（变换单元）和8×8TU视频数据的重要地图编码的方法和装置。 所述方法包括：接收与第一颜色分量相关联的第一TU的至少一个上下文选择表，并且从所述至少一个上下文选择表生成与第二颜色分量相关联的第二TU的导出上下文选择表。 第一TU具有包括4×4和8×8的第一尺寸。 第二TU具有包括4×4和8×8的第二尺寸。 第二尺寸与第一尺寸不同，第二颜色分量不同于第一颜色分量，或者第二尺寸不同于第一尺寸，并且第二颜色分量与第一颜色分量不同。 然后将导出的上下文选择表用于第二TU的显着性映射处理。

公开(公告)号：US20140247884A1

公开(公告)日：2014-09-04

申请号：US14353025

申请日：2012-11-07

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Jian-Liang Lin ,  Ching-Yeh Chen ,  Yi-Wen Chen ,  Yu-Wen Huang

IPC: H04N19/51 ,  H04N19/583 ,  H04N19/30

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/42 ,  H04N19/513 ,  H04N19/567 ,  H04N19/58 ,  H04N19/91

Abstract: A method and apparatus for deriving a scaled MV (motion vector) for a current block based on a candidate MV associated with a candidate block are disclosed. Embodiments according to the present invention increase effective scaling factor of motion vector scaling. In one embodiment, a distance ratio of a first picture distance between a current picture and a target reference picture pointed to by a current motion vector of the current block to a second picture distance between a candidate picture corresponding to the candidate block and a candidate reference picture pointed to by the candidate MV is computed. The scaled MV is then generated based on the candidate MV according to the distance ratio, where the scaled MV has an effective scaling ratio between −m and n, and wherein m and n are positive integers greater than 4. The values of m and n can be 8, 16 or 32.

Abstract translation: 公开了一种用于基于与候选块相关联的候选MV导出当前块的缩放MV（运动矢量）的方法和装置。 根据本发明的实施例增加了运动矢量缩放的有效缩放因子。 在一个实施例中，由当前块的当前运动矢量指向的当前画面和目标参考画面之间的第一画面距离与候选块对应的候选画面与候选画面之间的第二画面距离的距离比 计算由候选MV指向的图片。 然后根据距离比，基于候选MV生成缩放的MV，其中缩放的MV具有-m和n之间的有效缩放比率，并且其中m和n是大于4的正整数。m和n的值 可以是8,16或32。

公开(公告)号：US20140226725A1

公开(公告)日：2014-08-14

申请号：US14256971

申请日：2014-04-20

Applicant: MEDIATEK INC.

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

IPC: H04N19/51

CPC classification number: H04N19/513 ,  H04N19/52

Abstract: An apparatus and method of deriving a motion vector predictor (MVP) for a current MV of a current block in Inter, Merge or Skip mode are disclosed based on motion vector (MV) attribute search. The system determines first MV attribute search comprising whether a given MV pointing to the target reference picture in the given reference list, or whether the given MV pointing to the target reference picture in other reference list, and determines second MV attribute search comprising whether the given MV pointing to other reference pictures in the given reference list, or whether the given MV pointing to the other reference pictures in the other reference list. The MVP for the current block is then determined from the neighboring blocks according to a search order.

Abstract translation: 基于运动矢量（MV）属性搜索，公开了针对Inter，Merge或者Skip模式中的当前块的当前MV的导出运动矢量预测器（MVP）的装置和方法。 系统确定第一MV属性搜索，其包括指定给定参考列表中的目标参考图片的给定MV，或者指定给定MV在其他参考列表中的目标参考图片，以及确定第二MV属性搜索，包括是否给定 MV指向给定参考列表中的其他参考图片，或者给定MV是否指向另一个参考列表中的其他参考图片。 然后根据搜索顺序从相邻块确定当前块的MVP。