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    Method and Apparatus of Adaptive Loop Filtering
    42.
    发明申请
    Method and Apparatus of Adaptive Loop Filtering 有权
    自适应环路滤波的方法与装置

    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。

    METHOD AND APPARATUS FOR LOOP FILTERING
    43.
    发明申请
    METHOD AND APPARATUS FOR LOOP FILTERING 审中-公开
    环路滤波的方法和装置

    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。

    IN-LOOP NEURAL NETWORKS FOR VIDEO CODING
    44.
    发明申请
    IN-LOOP NEURAL NETWORKS FOR VIDEO CODING 有权

    公开(公告)号：US20250124607A1

    公开(公告)日：2025-04-17

    申请号：US18727505

    申请日：2023-01-12

    Applicant: MEDIATEK INC.

    Inventor： Jan KLOPP ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Yu-Wen HUANG

    IPC: G06T9/00 ,  H04N19/117 ,  H04N19/184

    Abstract: A method for video decoding includes receiving a video frame reconstructed based on data received from a bitstream. The method further includes extracting, from the bitstream, a first syntax element indicating whether a spatial partition for partitioning the video frame is active. The method also includes, responsive to the first syntax element indicating that the spatial partition for partitioning the video frame is active, determining a configuration of the spatial partition for partitioning the video frame, determining a plurality of parameter sets of a neural network, and applying the neural network to the video frame. The video frame is spatially divided based on the determined configuration of the spatial partition for partitioning the video frame into a plurality of portions, and the neural network is applied to the plurality of portions in accordance with the determined plurality of parameter sets.

    CROSS-COMPONENT LINEAR MODEL PREDICTION
    45.
    发明申请
    CROSS-COMPONENT LINEAR MODEL PREDICTION 有权

    公开(公告)号：US20250039356A1

    公开(公告)日：2025-01-30

    申请号：US18721354

    申请日：2022-12-29

    Applicant: MEDIATEK INC.

    Inventor： Chia-Ming TSAI ,  Chun-Chia CHEN ,  Yu-Ling HSIAO ,  Man-Shu CHIANG ,  Chih-Wei HSU ,  Olena CHUBACH ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

    IPC: H04N19/103 ,  H04N19/176 ,  H04N19/186

    Abstract: A video coding system that uses multiple models to predict chroma samples is provided. The video coding system receives data for a block of pixels to be encoded or decoded as a current block of a current picture of a video. The video coding system derives multiple prediction linear models based on luma and chroma samples neighboring the current block. The video coding system constructs a composite linear model based on the multiple prediction linear models. The video coding system applies the composite linear model to incoming or reconstructed luma samples of the current block to generate a chroma predictor of the current block. The video coding system uses the chroma predictor to reconstruct chroma samples of the current block or to encode the current block.

    Method and Apparatus for Hardware-Friendly Template Matching in Video Coding System
    46.
    发明公开
    Method and Apparatus for Hardware-Friendly Template Matching in Video Coding System 审中-公开

    公开(公告)号：US20240357081A1

    公开(公告)日：2024-10-24

    申请号：US18684783

    申请日：2022-08-18

    Applicant: MEDIATEK INC.

    Inventor： Chun-Chia CHEN ,  Olena CHUBACH ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

    IPC: H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/513

    CPC classification number: H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/521

    Abstract: A method and apparatus for video coding system that utilizes low-latency template-matching motion-vector refinement are disclosed. According to this method, input data associated with a current block of a video unit in a current picture are received. Motion compensation is then applied to the current block according to an initial motion vector (MV) to obtain initial motion-compensated predictors of the current. After applying the motion compensation to the current block, template-matching MV refinement is applied to the current block to obtain a refined MV for the current block. The current block is then encoded or decoded using information including the refined MV. The method may further comprise determining gradient values of the initial motion-compensated predictors. The initial motion-compensated predictors can be adjusted by taking into consideration of the gradient values and/or MV difference between the refined and initial MVs.

    Low-latency Video Coding Methods and Apparatuses for Chroma Separated Tree
    49.
    发明申请
    Low-latency Video Coding Methods and Apparatuses for Chroma Separated Tree 有权

    公开(公告)号：US20230065083A1

    公开(公告)日：2023-03-02

    申请号：US17552963

    申请日：2021-12-16

    Applicant: MEDIATEK INC.

    Inventor： Chia-Ming TSAI ,  Chun-Chia CHEN ,  Chih-Wei HSU ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Yu-Wen HUANG

    IPC: H04N19/119 ,  H04N19/159 ,  H04N19/169 ,  H04N19/186 ,  H04N19/176 ,  H04N19/105

    Abstract: Low-latency video coding methods and apparatuses include receiving input data associated with a current Intra slice composed of Coding Tree Units (CTU), where each CTU includes luma and chroma Coding Tree Blocks (CTBs), partitioning each CTB into non-overlapping pipeline units, and encoding or decoding the CTUs in the current Intra slices by performing processing of chroma pipeline units after beginning processing of luma pipeline units in at least one pipeline stage. Each of the pipeline units is processed by one pipeline stage after another pipeline stage, and different pipeline stages process different pipeline units simultaneously. The pipeline stage in the low-latency video coding methods and apparatuses simultaneously processes one luma pipeline unit and at least one previous chroma pipeline unit within one pipeline unit time interval.

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