公开(公告)号：US20180070077A1

公开(公告)日：2018-03-08

申请号：US15795582

申请日：2017-10-27

Applicant: MEDIATEK INC

Inventor： Chia-Yang TSAI ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

IPC: H04N19/105 ,  H04N19/30 ,  H04N19/597 ,  H04N19/593 ,  H04N19/70 ,  H04N19/186 ,  H04N19/136

CPC classification number: H04N19/105 ,  H04N19/136 ,  H04N19/186 ,  H04N19/30 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70

Abstract: A method of inter-layer or inter-view prediction for an inter-layer or inter-view video coding system is disclosed. The method includes receiving a to-be-processed block in the EL or the EV, determining a collocated block in the BL (Base layer) or the BV (Base View), wherein the collocated block is located at a location in the BL or the BV corresponding to the to-be-processed block in the EL (Enhancement Layer)or in the EV (Enhancement view), deriving a predictor for the to-be-processed block in the EL or the EV from the collocated block in the BL or the BV based on pixel data of the BL or the BV, wherein the predictor corresponds to a linear function of pixel data in the collocated block, and encoding or decoding the to-be-processed block in the EL or the EV using the predictor.

公开(公告)号：US20160269753A1

公开(公告)日：2016-09-15

申请号：US15034115

申请日：2014-11-10

Applicant: MediaTek Inc.

Inventor： Chia-Yang TSAI ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/68 ,  H04N19/18

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/119 ,  H04N19/14 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/196 ,  H04N19/68 ,  H04N19/70

Abstract: A method of adaptive loop filtering for reconstructed video to improve the performance is disclosed. In one embodiment, a loop filter is selected from one or more candidate filters including a circular symmetrical filter candidate. The candidate filters also may include a ½-symmetry filter candidate and a flag is used to select between different symmetries. In another embodiment, a priority-based block filter merge is disclosed. A filter merge list consisting of no more than a first number of filter candidates selected from corresponding filters used by corresponding set members in the neighboring block set is generated according to a priority order of the set members in the neighboring block set. In yet another embodiment, the loop filter is shared by reconstructed video in multiple image units of a same group. The filter merge groups are identified by differences of consecutive group indices.

Abstract translation: 公开了一种重建视频自适应环路滤波方法，以提高性能。 在一个实施例中，从包括圆形对称滤波器候选的一个或多个候选滤波器中选择一个环路滤波器。 候选滤波器还可以包括½对称滤波器候选，并且标记用于在不同对称之间进行选择。 在另一个实施例中，公开了基于优先级的块过滤器合并。 根据相邻块集合中的集合成员的优先顺序，生成由相邻块集合中的相应集合成员使用的相应过滤器中选择的不超过第一数目的过滤器候选的过滤器合并列表。 在另一个实施例中，环路滤波器由同一组的多个图像单元中的重构视频共享。 过滤器合并组由连续组索引的差异来标识。

公开(公告)号：US20160156938A1

公开(公告)日：2016-06-02

申请号：US15015537

申请日：2016-02-04

Applicant: MediaTek Inc.

Inventor： Chih-Ming FU ,  Ching-Yeh CHEN ,  Chia-Yang TSAI ,  Yu-Wen HUANG ,  Shaw-Min LEI

IPC: H04N19/82 ,  H04N19/157 ,  H04N19/186 ,  H04N19/176 ,  H04N19/463 ,  H04N19/96 ,  H04N19/132 ,  H04N19/117 ,  H04N19/196

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/132 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/463 ,  H04N19/70 ,  H04N19/96

Abstract: A method and apparatus for processing reconstructed video using in-loop filter in a video coding system are disclosed. The method uses chroma in-loop filter indication to indicate whether chroma components are processed by in-loop filter when the luma in-loop filter indication indicates that in-loop filter processing is applied to the luma component. An additional flag may be used to indicate whether the in-loop filter processing is applied to an entire picture using same in-loop filter information or each block of the picture using individual in-loop filter information. Various embodiments according to the present invention to increase efficiency are disclosed, wherein various aspects of in-loop filter information are taken into consideration for efficient coding such as the property of quadtree-based partition, boundary conditions of a block, in-loop filter information sharing between luma and chroma components, indexing to a set of in-loop filter information, and prediction of in-loop filter information.

Abstract translation: 公开了一种使用视频编码系统中的环路滤波器处理重构视频的方法和装置。 该方法使用色度环路滤波器指示来指示当亮度环路滤波器指示表明将环路滤波处理应用于亮度分量时，是否通过环路滤波器处理色度分量。 可以使用附加标志来指示使用相同的环路滤波器信息或使用各个循环过滤器信息的图像的每个块来将整个图像应用于环路滤波处理。 公开了根据本发明的提高效率的各种实施例，其中考虑到环路滤波器信息的各个方面以进行有效的编码，例如基于四叉树的分区的属性，块的边界条件，环路滤波器信息 在亮度和色度分量之间共享，索引到一组环路滤波器信息，以及对环路滤波器信息的预测。

公开(公告)号：US20170295366A1

公开(公告)日：2017-10-12

申请号：US15632481

申请日：2017-06-26

Applicant: MEDIATEK INC.

Inventor： Ching-Yeh CHEN ,  Chih-Wei HSU ,  Chia-Yang TSAI ,  Yu-Wen HUANG

IPC: H04N19/11 ,  H04N19/59 ,  H04N19/597 ,  H04N19/159 ,  H04N19/82 ,  H04N19/186 ,  H04N19/593

CPC classification number: H04N19/186 ,  H04N19/11 ,  H04N19/159 ,  H04N19/182 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597 ,  H04N19/82

Abstract: In one implementation, a method operates by receiving neighboring reconstructed first-color pixels and current reconstructed first-color pixels of a current first-color block and receiving neighboring reconstructed second-color pixels of a current second-color block collocated with the current first-color block. The method then determines linear model (LM) parameters according to a linear model for one or more LM Intra modes. The method then receives input data associated with current second-color pixels of the current second-color block and generates a cross-color Intra predictor from the current reconstructed first-color pixels of the current first-color block using the LM parameters associated with a LM Intra mode selected from said one or more LM Intra modes. Finally, the method applies cross-color Intra prediction encoding or decoding to the current second-color pixels of the current second-color block using the cross-color Intra predictor for the selected LM Intra mode.

公开(公告)号：US20160234499A1

公开(公告)日：2016-08-11

申请号：US15132454

申请日：2016-04-19

Applicant: MediaTek Inc.

Inventor： Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen Huang ,  Shaw-Min Lei ,  Chih-Ming FU ,  Chia-Yang TSAI

IPC: H04N19/13 ,  H04N19/154 ,  H04N19/187 ,  H04N19/146

CPC classification number: H04N19/13 ,  H04N19/117 ,  H04N19/119 ,  H04N19/146 ,  H04N19/154 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A method and apparatus for scalable video coding are disclosed, wherein the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein the EL has higher spatial resolution or better video quality than the BL. According to embodiments of the present invention, information from the base layer is exploited for coding the enhancement layer. The information coding for the enhancement layer includes CU structure, motion information, motion information, MVP/merge candidates, intra prediction mode, residual quadtree information, texture information, residual information, context adaptive entropy coding, Adaptive Lop Filter (ALF), Sample Adaptive Offset (SAO), and deblocking filter.

Abstract translation: 公开了一种用于可缩放视频编码的方法和装置，其中视频数据被配置为基本层（BL）和增强层（EL），并且其中EL具有比BL更高的空间分辨率或更好的视频质量。 根据本发明的实施例，利用来自基础层的信息来对增强层进行编码。 增强层的信息编码包括CU结构，运动信息，运动信息，MVP /合并候选，帧内预测模式，残余四叉树信息，纹理信息，残差信息，上下文自适应熵编码，自适应Lop滤波器（ALF） 偏移（SAO）和去块滤波器。

公开(公告)号：US20160261863A1

公开(公告)日：2016-09-08

申请号：US15034125

申请日：2014-11-13

Applicant: MEDIATEK INC.

Inventor： Ching-Yeh CHEN ,  Chia-Yang TSAI ,  Yu-Wen HUANG

IPC: H04N19/117 ,  H04N19/14 ,  H04N19/172 ,  H04N19/82 ,  H04N19/182

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/119 ,  H04N19/14 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/196 ,  H04N19/68 ,  H04N19/70

Abstract: A method of adaptive loop filtering with implicit sample-based On/Off control for reconstructed video to improve the performance is disclosed. In one embodiment, each pixel of the video data associated with the reconstructed current image unit is classified into a first group and a second group. Adaptive Loop Filter (ALF) is then applied to these pixels belonging to the first group. For pixels in the second group, ALF is not applied. The image unit may correspond to one coding tree block (CTB) or one coding tree unit (CTU). Various classification means for classifying each pixel into a first group or a second group have also been disclosed. The adaptive loop filtering with implicit sample-based On/Off control may also be used as an additional mode in a system supporting block-based On/Off control.

Abstract translation: 公开了一种采用隐含的基于采样的On / Off控制重建视频来提高性能的自适应环路滤波方法。 在一个实施例中，与重构的当前图像单元相关联的视频数据的每个像素被分类为第一组和第二组。 然后，将自适应环路滤波器（ALF）应用于属于第一组的这些像素。 对于第二组中的像素，不应用ALF。 图像单元可以对应于一个编码树块（CTB）或一个编码树单元（CTU）。 还已经公开了用于将每个像素分类成第一组或第二组的各种分类装置。 具有隐含采样的开/关控制的自适应环路滤波也可以用作支持基于块的开/关控制的系统中的附加模式。

公开(公告)号：US20150365684A1

公开(公告)日：2015-12-17

申请号：US14655447

申请日：2014-03-13

Applicant: MEDIATEK INC.

Inventor： Ching-Yeh CHEN ,  Chih-Wei HSU ,  Chia-Yang TSAI ,  Yu-Wen HUANG

IPC: H04N19/186 ,  H04N19/59 ,  H04N19/182 ,  H04N19/593

CPC classification number: H04N19/186 ,  H04N19/11 ,  H04N19/159 ,  H04N19/182 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597 ,  H04N19/82

Abstract: A method for cross-color Intra prediction using the LM Intra mode using multi-row or multi-column neighboring reconstructed pixels for LM parameter derivation or using only top pixels or left pixels of neighboring pixels is disclosed. Multiple LM Intra modes can be used. For example, three LM Intra modes can be used and the LM parameters for the three LM Intra modes can be determined based on only the top pixels, only the left pixels and both the top pixels and left pixels of neighboring reconstructed pixels respectively. To remove the need for additional buffer requirement for deriving the LM parameters based on using multi-row or multi-column neighboring reconstructed pixels, the current method re-uses existing buffers, where the buffers are used for deblocking. A syntax element can be used to indicate one of the multi-LM modes selected.

Abstract translation: 公开了一种使用LM内部模式使用多行或多列相邻重建像素进行LM参数推导或仅使用相邻像素的顶部像素或左侧像素的交叉颜色帧内预测的方法。 可以使用多个LM内部模式。 例如，可以使用三个LM内部模式，并且可以仅基于顶部像素，仅左侧像素以及相邻重建像素的顶部像素和左侧像素分别确定三个LM内部模式的LM参数。 为了消除对基于使用多行或多列相邻重建像素导出LM参数的附加缓冲区要求的需要，当前方法重新使用现有的缓冲器，其中缓冲器用于去块。 语法元素可用于指示所选择的多LM模式之一。

公开(公告)号：US20150350648A1

公开(公告)日：2015-12-03

申请号：US14822026

申请日：2015-08-10

Applicant: MediaTek Inc.

Inventor： Chih-Ming FU ,  Ching-Yeh CHEN ,  Chia-Yang TSAI ,  Yu-Wen HUANG ,  Shaw-Min LEI

IPC: H04N19/117 ,  H04N19/157 ,  H04N19/96 ,  H04N19/176 ,  H04N19/174

CPC classification number: H04N19/117 ,  H04N19/10 ,  H04N19/115 ,  H04N19/129 ,  H04N19/134 ,  H04N19/137 ,  H04N19/14 ,  H04N19/154 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/439 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A method and apparatus for processing of coded video using in-loop processing are disclosed. Input data to the in-loop processing is received and the input data corresponds to reconstructed or reconstructed-and-deblocked coding units of the picture. The input data is divided into multiple filter units and each filter unit includes one or more boundary-aligned reconstructed or reconstructed-and-deblocked coding units. A candidate filter is then selected from a candidate filter set for the in-loop processing. The candidate filter set comprises at least two candidate filters the said in-loop processing corresponding to adaptive loop filter (ALF), adaptive offset (AO), or adaptive clipping (AC). The in-loop processing is then applied to one of the filter units to generate a processed filter unit by using the candidate filter selected to all boundary-aligned reconstructed or reconstructed-and-deblocked coding units in said one of the filter units.

Abstract translation: 公开了一种使用循环处理来处理编码视频的方法和装置。 接收对于循环处理的输入数据，并且输入数据对应于图像的重建或重构和解块编码单元。 输入数据被分成多个滤波器单元，并且每个滤波器单元包括一个或多个边界对齐的重构或重构和解块编码单元。 然后从用于进行循环处理的候选滤波器组中选择候选滤波器。 候选滤波器组包括与自适应环路滤波器（ALF），自适应偏移（AO）或自适应限幅（AC）相对应的所述循环中的至少两个候选滤波器。 然后将该循环处理应用于一个滤波器单元，以通过使用对所述滤波器单元中的所述一个滤波器单元中的所有边界对准的重构或重构和解块编码单元选择的候选滤波器来生成经处理的滤波器单元。

公开(公告)号：US20150326886A1

公开(公告)日：2015-11-12

申请号：US14348668

申请日：2012-10-10

Applicant: MediaTek Inc.

Inventor： Yi-Hau CHEN ,  Kun-Bin LEE ,  Chi-Cheng JU ,  Yu-Wen HUANG ,  Shaw-Min LEI ,  Chih-Ming FU ,  Ching-Yeh CHEN ,  Chia-Yang TSAI ,  Chih-Wei HSU

IPC: H04N19/82 ,  H04N19/61 ,  H04N19/176 ,  H04N19/107 ,  H04N19/117

CPC classification number: H04N19/82 ,  H04N19/107 ,  H04N19/117 ,  H04N19/176 ,  H04N19/426 ,  H04N19/436 ,  H04N19/61

Abstract: A method and apparatus for loop processing of reconstructed video in an encoder system are disclosed. The loop processing comprises an in-loop filter and one or more adaptive filters. The filter parameters for the adaptive filter are derived from the pre-in-loop video data so that the adaptive filter processing can be applied to the in-loop processed video data without the need of waiting for completion of the in-loop filter processing for a picture or an image unit. In another embodiment, two adaptive filters derive their respective adaptive filter parameters based on the same pre-in-loop video data. In yet another embodiment, a moving window is used for image-unit-based coding system incorporating in-loop filter and one or more adaptive filters. The in-loop filter and the adaptive filter are applied to a moving window of pre-in-loop video data comprising one or more sub-regions from corresponding one or more image units.

Abstract translation: 公开了一种用于编码器系统中的重建视频的循环处理的方法和装置。 环路处理包括一个环路滤波器和一个或多个自适应滤波器。 用于自适应滤波器的滤波器参数是从循环前视频数据导出的，使得自适应滤波处理可以应用于环路内处理的视频数据，而不需要等待完成环路滤波处理 图片或图像单位。 在另一个实施例中，两个自适应滤波器基于相同的预循环视频数据导出它们各自的自适应滤波器参数。 在另一个实施例中，移动窗口用于并入基于循环滤波器和一个或多个自适应滤波器的基于图像单元的编码系统。 环路滤波器和自适应滤波器被应用到包括来自相应的一个或多个图像单元的一个或多个子区域的预循环视频数据的移动窗口。