公开(公告)号：US20170155911A1

公开(公告)日：2017-06-01

申请号：US15355484

申请日：2016-11-18

Applicant: MEDIATEK, INC.

Inventor： Jian-Liang LIN ,  Yu-Wen Huang

IPC: H04N19/159 ,  H04N19/46 ,  H04N19/117

CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/117 ,  H04N19/147 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82

Abstract: Aspects of the disclosure include a method for video coding. The method includes receiving input data associated with a current block in a current image frame of video data, where the current block is coded by intra-prediction or to be coded by intra-prediction. The method also includes determining an intra-prediction mode of the current block, selecting one of a plurality of filters including at least a default filter and an N-tap filter, and generating filtered neighboring samples by filtering neighboring samples adjacent to the current block using the selected filter, where N is a positive integer different from 3. Moreover, the method includes encoding or decoding the current block by predicting the current block based on the filtered neighboring samples and the intra-prediction mode.

公开(公告)号：US20160182884A1

公开(公告)日：2016-06-23

申请号：US14908273

申请日：2014-08-13

Applicant: MEDIATEK INC.

Inventor： Jian-Liang LIN ,  Na ZHANG ,  Yi-Wen CHEN ,  Jicheng AN ,  Yu-Lin CHANG

IPC: H04N13/00 ,  H04N19/136 ,  H04N19/593 ,  H04N19/124 ,  H04N19/44 ,  H04N19/176

CPC classification number: H04N13/161 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/44 ,  H04N19/52 ,  H04N19/593 ,  H04N19/597 ,  H04N2013/0081

Abstract: A method and apparatus for a three-dimensional or multi-view video encoding or decoding system utilizing unified disparity vector derivation is disclosed. When a three-dimensional coding tool using a derived disparity vector (DV) is selected, embodiments according to the present invention will first obtain the derived DV from one or more neighboring blocks. If the derived DV is available, the selected three-dimensional coding tool is applied to the current block using the derived DV. If the derived DV is not available, the selected three-dimensional coding tool is applied to the current block using a default DV, where the default DV is set to point to an inter-view reference picture in a reference picture list of the current block.

Abstract translation: 公开了一种利用统一视差向量导出的三维或多视点视频编码或解码系统的方法和装置。 当选择使用导出的视差矢量（DV）的三维编码工具时，根据本发明的实施例将首先从一个或多个相邻块获得导出的DV。 如果导出的DV可用，则使用导出的DV将所选择的三维编码工具应用于当前块。 如果导出的DV不可用，则使用默认DV将所选择的三维编码工具应用于当前块，其中默认DV设置为指向当前块的参考图片列表中的视频间参考图片 。

公开(公告)号：US20150365694A1

公开(公告)日：2015-12-17

申请号：US14762873

申请日：2014-04-02

Applicant: MEDIATEK INC.

Inventor： Jian-Liang LIN ,  Yi-Wen CHEN

IPC: H04N19/513 ,  H04N19/52 ,  H04N19/597 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N19/132 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597

Abstract: A method and apparatus for determining a derived disparity vector (DV) directly from associated depth block for motion vector prediction in three-dimensional video encoding or decoding are disclosed. Input data associated with current motion information of a current texture block of a current texture picture in a current dependent view and a depth block associated with the current texture block are received. The derived DV for the current texture block based on the depth block is then determined and used for inter-view or temporal motion vector prediction (MVP). If the current motion information corresponds to inter-view prediction, the current DV is encoded or decoded using the derived DV as a MVP. If the current motion information corresponds to temporal prediction, the current MV is encoded or decoded using a derived MV of a corresponding texture block in a reference view as the MVP.

Abstract translation: 公开了一种用于在三维视频编码或解码中直接从用于运动矢量预测的相关深度块确定导出视差矢量（DV）的方法和装置。 接收与当前依赖视图中的当前纹理图像的当前纹理块的当前运动信息相关联的输入数据和与当前纹理块相关联的深度块。 然后，基于深度块的当前纹理块的导出DV被确定并用于视图间或时间运动矢量预测（MVP）。 如果当前运动信息对应于视角间预测，则使用导出的DV作为MVP对当前DV进行编码或解码。 如果当前运动信息对应于时间预测，则使用作为MVP的参考视图中的对应纹理块的导出MV对当前MV进行编码或解码。

公开(公告)号：US20150271486A1

公开(公告)日：2015-09-24

申请号：US14620500

申请日：2015-02-12

Applicant: MediaTek Inc.

Inventor： Jian-Liang LIN ,  Yi-Wen CHEN

IPC: H04N19/103 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/103 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70

Abstract: A method and apparatus for signaling one or more coding modes selected from a mode group for multi-view or three-dimensional (3D) video coding are disclosed. The mode group comprises a pulse code modulation (PCM) mode, a segment-wise depth coding (SDC) mode and a depth-based block partitioning (DBBP) mode. According to the present invention, a first mode is determined regarding whether it is enabled, where the first mode corresponds to one of at least two mode members selected from the PCM mode, the SDC mode and the DBBP mode. If the first mode is enabled, a first mode flag corresponding to the first mode is signaled to indicate whether the first mode is asserted. If the first mode is asserted, the current depth or texture block is coded using the first mode and signaling any remaining mode member of at least two mode members is skipped.

Abstract translation: 公开了用于发送从用于多视点或三维（3D）视频编码的模式组中选择的一个或多个编码模式的信号的方法和装置。 模式组包括脉冲编码调制（PCM）模式，分段深度编码（SDC）模式和基于深度的块分割（DBBP）模式。 根据本发明，确定第一模式是否被启用，其中第一模式对应于从PCM模式，SDC模式和DBBP模式中选择的至少两个模式成员中的一个模式。 如果第一模式被使能，则发信号通知与第一模式相对应的第一模式标志，以指示第一模式是否被断言。 如果第一模式被确定，则使用第一模式对当前深度或纹理块进行编码，并且发送跳过至少两个模式成员的任何剩余模式成员。

公开(公告)号：US20220078418A1

公开(公告)日：2022-03-10

申请号：US17526678

申请日：2021-11-15

Applicant: MEDIATEK INC.

Inventor： Yu-Wen HUANG ,  Yu-Chen SUN ,  Tzu-Der CHUANG ,  Jian-Liang LIN ,  Ching-Yeh CHEN

IPC: H04N19/117 ,  H04N19/82 ,  G06T5/00 ,  H04N19/86 ,  H04N19/182 ,  H04N19/50 ,  G06N3/04

Abstract: A method and apparatus of video coding incorporating Deep Neural Network are disclosed. A target signal is processed using DNN (Deep Neural Network), where the target signal provided to DNN input corresponds to the reconstructed residual, output from the prediction process, the reconstruction process, one or more filtering processes, or a combination of them. The output data from DNN output is provided for the encoding process or the decoding process. The DNN can be used to restore pixel values of the target signal or to predict a sign of one or more residual pixels between the target signal and an original signal. An absolute value of one or more residual pixels can be signalled in the video bitstream and used with the sign to reduce residual error of the target signal.

公开(公告)号：US20200228843A1

公开(公告)日：2020-07-16

申请号：US16737377

申请日：2020-01-08

Applicant: MEDIATEK INC.

Inventor： Sheng Yen LIN ,  Jian-Liang LIN ,  Lin LIU

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/46 ,  H04N19/176

Abstract: Method and apparatus of coding a video sequence are disclosed. According to this method, a first syntax is signalled in or parsed from a bitstream, where the first syntax indicates whether a loop filtering process is disabled for one or more virtual boundaries in a corresponding region. A reconstructed filter unit in a current picture is received, wherein the reconstructed filter unit is associated with the loop filter and the reconstructed filter unit comprises reconstructed pixels for applying a loop filtering process associated with the loop filter to a current reconstructed pixel. When the first syntax is true, the loop filter processing is disabled when the reconstructed filter unit is across said one or more virtual boundaries in the corresponding region. When the first syntax is false, the loop filter processing is not disabled when the reconstructed filter unit is across the virtual boundary.

公开(公告)号：US20200074687A1

公开(公告)日：2020-03-05

申请号：US16557643

申请日：2019-08-30

Applicant: MEDIATEK INC.

Inventor： Sheng Yen LIN ,  Lin LIU ,  Jian-Liang LIN

IPC: G06T9/00 ,  G06T3/40 ,  G06T19/00 ,  H04N19/117 ,  H04N19/105 ,  H04N19/172 ,  H04N19/186

Abstract: Methods and apparatus of coding a video sequence, wherein pictures from the video sequence contain one or more discontinuous edges are disclosed. The loop filtering process associated with the loop filter is then applied to the current reconstructed pixel to generate a filtered reconstructed pixel, where if the loop filtering process is across a virtual boundary of the current picture, one or more alternative reference pixels are used to replace unexpected reference pixels located in a different side of the virtual boundary from the current reconstructed pixel, and said one or more alternative reference pixels are generated from second reconstructed pixels in a same side of the virtual boundary as the current reconstructed pixel. According to another method, reference pixels are derived from spherical neighbouring reference pixels for the loop filtering process.

公开(公告)号：US20190289316A1

公开(公告)日：2019-09-19

申请号：US16354303

申请日：2019-03-15

Applicant: MEDIATEK INC.

Inventor： Cheng-Hsuan SHIH ,  Jian-Liang LIN

IPC: H04N19/52 ,  H04N19/176

Abstract: Method and apparatus of coding 360-degree virtual reality (VR360) pictures are disclosed. According to the method, when a first MV (motion vector) of a target neighboring block for the current block is not available within the 2D projection picture, or when the target neighboring block is not in a same face as the current block: a true neighboring block picture corresponding to the target neighboring block is identified within the 2D projection; if a second MV of the true neighboring block exists, the second MV of the true neighboring block is transformed into a derived MV; and a current MV of the current block is encoded or decoded using the derived MV or one selected candidate in a MV candidate list including the derived MV as an MV predictor.

公开(公告)号：US20180332292A1

公开(公告)日：2018-11-15

申请号：US15775478

申请日：2016-11-16

Applicant: MEDIATEK INC.

Inventor： Jian-Liang LIN ,  Yu-Wen HUANG

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/117 ,  H04N19/126

CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/117 ,  H04N19/126 ,  H04N19/129 ,  H04N19/176 ,  H04N19/182 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

Abstract: A method and apparatus of Intra prediction filtering in an image or video encoder or decoder are disclosed. The method comprises receiving input data associated with a current block (1110); determining a current Intra prediction mode belonging to a set of available Intra prediction modest for the current block (1120); according to the current Intra prediction mode, determining an initial Intra prediction block consisting of initial Intra prediction pixel values based on neighboring reconstructed samples of the current block (1130); applying Intra prediction filter to the initial Intra prediction block according to a current scanning order selected from multiple scanning orders depending on the current Intra prediction mode to generate a filtered Intra prediction block consisting of filtered Intra prediction pixel values, wherein inputs to the Intra prediction filter comprise a current pixel and one or more adjacent pixels, and said multiple scanning orders comprise at least two scanning orders selected from a vertical scanning order, a horizontal scanning order and a diagonal scanning order (1140); applying mode-dependent Intra prediction encoding or depending to the current block using the filtered Intra prediction block as a predictor for the current block (1150).

公开(公告)号：US20180098090A1

公开(公告)日：2018-04-05

申请号：US15722734

申请日：2017-10-02

Applicant: MEDIATEK INC.

Inventor： Hung-Chih LIN ,  Jian-Liang LIN ,  Shen-Kai CHANG

IPC: H04N19/597 ,  H04N13/00 ,  H04N19/174 ,  H04N19/533 ,  H04N19/82 ,  H04N19/70

CPC classification number: H04N19/597 ,  H04N13/117 ,  H04N13/139 ,  H04N13/156 ,  H04N13/161 ,  H04N13/194 ,  H04N13/204 ,  H04N13/344 ,  H04N19/174 ,  H04N19/523 ,  H04N19/533 ,  H04N19/55 ,  H04N19/70 ,  H04N19/82

Abstract: Methods and apparatus for processing a 360°-VR frame sequence are disclosed. According to one method, input data associated with a 360°-VR frame sequence are received, where each 360°-VR frame comprises one set of faces associated with a polyhedron format. Each set of faces is rearranged into one rectangular whole VR frame consisting of a front sub-frame and a rear sub-frame, where the front sub-frame corresponds to first contents in a first field of view covering front 180°×180° view and the rear sub-frame corresponds to second contents in a second field of view covering rear 180°×180° view. Output data corresponding to a rearranged 360°-VR frame sequence consisting of a sequence of rectangular whole VR frames are provided.