公开(公告)号：US09560362B2

公开(公告)日：2017-01-31

申请号：US14365032

申请日：2012-12-14

Applicant: MEDIATEK INC.

Inventor： Chih-Ming Fu ,  Yi-Wen Chen ,  Chih-Wei Hsu

IPC: H04N7/12 ,  H04N19/117 ,  H04N19/597 ,  H04N19/172 ,  H04N19/463 ,  H04N19/136 ,  H04N19/187 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/172 ,  H04N19/187 ,  H04N19/463 ,  H04N19/597 ,  H04N19/82

Abstract: A method and apparatus for 3D video coding system are disclosed. Embodiments according to the present invention apply SAO process (sample adaptive offset process) to at least one dependent-view image of the processed multi-view images if processed multi-view images are received. Also embodiments according to the present invention apply the SAO process to at least one dependent-view image of the processed multi-view images or at least one depth map of the processed multi-view depth maps if both processed multi-view images and the processed multi-view depth maps are received. The SAO can be applied to each color component of the processed multi-view images or the processed multi-view depth maps. The SAO parameters associated with a target region in one dependent-view image or in one depth map corresponding to one view may share or may be predicted by second SAO parameters associated with a source region corresponding to another view.

Abstract translation: 公开了一种用于3D视频编码系统的方法和装置。 如果接收到处理的多视图图像，则根据本发明的实施例将SAO过程（样本自适应偏移处理）应用于经处理的多视图图像的至少一个从属视图图像。 根据本发明的实施例还将SAO过程应用于经处理的多视图图像的至少一个从属视图图像或处理的多视图深度图的至少一个深度图，如果处理的多视图图像和处理的多视图图像 收到多视图深度图。 可以将SAO应用于经处理的多视图图像的每个颜色分量或经处理的多视图深度图。 与一个依赖视图图像中的目标区域相关联的SAO参数或对应于一个视图的一个深度图中的SAO参数可以共享或者可以通过与对应于另一个视图的源区域相关联的第二SAO参数来预测。

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：US20150222912A1

公开(公告)日：2015-08-06

申请号：US14422051

申请日：2013-07-30

Applicant: MediaTek Inc.

Inventor： Tzu-Der Chuang ,  Zhenzhong Chen ,  Shan Liu ,  Ching-Yeh Chen ,  Chih-Wei Hsu

IPC: H04N19/187 ,  H04N19/70 ,  H04N19/50 ,  H04N19/176 ,  H04N19/31

CPC classification number: H04N19/187 ,  H04N19/176 ,  H04N19/31 ,  H04N19/33 ,  H04N19/36 ,  H04N19/463 ,  H04N19/50 ,  H04N19/70

Abstract: A method and apparatus for coding video data in a scalable or three-dimensional video coding system are disclosed. In one embodiment, context for the input data associated with an inter-layer or inter-view coding syntax element of a current block in an enhancement-layer (EL) or a dependent view is formed or the input data is parsed to identify the context based on information associated with one or more neighboring blocks, information associated with the current block, or both. In another embodiment, encoding or decoding is applied to the input data associated with the current block in the EL using inter-layer texture prediction based on the BL block in the BL, wherein a flag indicating whether there is any transform coefficient coded for the current block is signaled.

Abstract translation: 公开了一种用于对可缩放或三维视频编码系统中的视频数据进行编码的方法和装置。 在一个实施例中，形成与增强层（EL）或从属视图中的当前块的层间或视图间编码语法元素相关联的输入数据的上下文，或者解析输入数据以识别上下文 基于与一个或多个相邻块相关联的信息，与当前块相关联的信息，或两者。 在另一个实施例中，使用基于BL中的BL块的层间纹理预测将编码或解码应用于与EL中的当前块相关联的输入数据，其中指示是否存在针对当前的编码的任何变换系数的标志 信号通知。

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：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：US12256094B2

公开(公告)日：2025-03-18

申请号：US17736144

申请日：2022-05-04

Applicant: MEDIATEK INC.

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

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/423

Abstract: Video encoding or decoding methods and apparatuses include receiving input data associated with a current block in a current picture, determining a preload region in a reference picture shared by two or more coding configurations of affine prediction or motion compensation or by two or more affine refinement iterations, loading reference samples in the preload region, generating predictors for the current block, and encoding or decoding the current block according to the predictors. The predictors associated with the affine refinement iterations or coding configurations are generated based on some of the reference samples in the preload region.

公开(公告)号：US12143601B2

公开(公告)日：2024-11-12

申请号：US17110208

申请日：2020-12-02

Applicant: MediaTek Inc.

Inventor： Chih-Wei Hsu ,  Lulin Chen ,  Yu-Ling Hsiao ,  Chun-Chia Chen ,  Ching-Yeh Chen ,  Chen-Yen Lai

IPC: H04N19/167 ,  H04N19/169 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A method for specifying layout of subpictures in video pictures is provided. A video decoder receives data from a bitstream to be decoded as a current picture of a video. For a current subpicture of a set of subpictures of the current picture, the video decoder determines a position of the current subpicture based on a width and a height of the current picture and a previously determined width and height of a particular subpicture in the set of subpictures. The video decoder reconstructs the current picture and the current subpicture based on the determined position.

公开(公告)号：US12143580B2

公开(公告)日：2024-11-12

申请号：US17260008

申请日：2019-07-12

Applicant: MEDIATEK INC.

Inventor： Chia-Ming Tsai ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Tzu-Der Chuang ,  Yu-Wen Huang

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/436 ,  H04N19/70 ,  H04N19/96 ,  H04N19/174

Abstract: Video processing methods and apparatuses in a video encoding or decoding system for processing a video picture partitioned into blocks with one or more partition constraints. The video encoding or decoding system receives input data of a current block and checks whether a predefined splitting type is allowed to partition the current block according to first and second constraints. The first constraint restricts each sub-block partitioned from the current block to be completely contained in one pipeline unit, and the second constraint restricts each sub-block partitioned from the current block to contain one or more complete pipeline units. The pipeline units are non-overlapping units in the video picture designed for pipeline processing. The current block is not partitioned by the predefined splitting type if any sub-block partitioned by the predefined splitting type violates both the first and second constraints. The system encodes or decodes the current block.

公开(公告)号：US12069257B2

公开(公告)日：2024-08-20

申请号：US17265957

申请日：2019-08-16

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Chih-Wei Hsu ,  Ching-Yeh Chen

IPC: H04N19/119 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/70 ,  H04N19/96

Abstract: Video data processing methods and apparatuses receive input data associated with a current split node partitioned from a parent node by a splitting type, determine a depth of the current split node according to the splitting type, and compare the depth of the current split node with a maximum delta QP signaling depth. A video decoding system derives a delta QP from one or more syntax elements signaled in a TU associated with the current split node according to the comparing result, reconstructs a final QP for the current split node based on a reference QP and the delta QP, and decodes one or more TUs associated with the current split node using the final QP. The depth is counted in a way considering different splitting types and splitting partitions.

公开(公告)号：US11973985B2

公开(公告)日：2024-04-30

申请号：US17892933

申请日：2022-08-22

Applicant: MediaTek Inc.

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

IPC: H04N11/02 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/137 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/182 ,  H04N19/615

CPC classification number: H04N19/615 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/137 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/182

Abstract: Various schemes pertaining to pre-encoding processing of a video stream with motion compensated temporal filtering (MCTF) are described. An apparatus determines a filtering interval for a received raw video stream having pictures in a temporal sequence. The apparatus selects from the pictures a plurality of target pictures based on the filtering interval, as well as a group of reference pictures for each target picture to perform pixel-based MCTF, which generates a corresponding filtered picture for each target picture. The apparatus subsequently transmits the filtered pictures as well as non-target pictures to an encoder for encoding the video stream. Subpictures of natural images and screen content images are separately processed by the apparatus.