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    SUPER-RESOLUTION LOOP RESTORATION
    12.
    发明申请
    SUPER-RESOLUTION LOOP RESTORATION 审中-公开

    公开(公告)号：US20190394482A1

    公开(公告)日：2019-12-26

    申请号：US16018105

    申请日：2018-06-26

    Applicant: GOOGLE LLC

    Inventor： Urvang Joshi ,  Debargha Mukherjee ,  Andrew Simpson

    IPC: H04N19/50 ,  H04N7/01 ,  H04N19/176 ,  H04N19/184 ,  H04N19/61 ,  H04N19/117

    Abstract: Systems and methods are disclosed for encoding and decoding video. For example, methods may include accessing an encoded bitstream; decoding loop restoration parameters in the encoded bitstream; after reconstruction of an image at a second resolution based on data of the encoded bitstream, upscaling the reconstructed image to obtain an upscaled reconstructed image at a first resolution, wherein the second resolution is less than the first resolution in at least one dimension; and applying loop restoration filtering to the upscaled reconstructed image using the loop restoration parameters to obtain a loop restored image at the first resolution.

    Non-causal overlapped block prediction in variable block size video coding
    13.
    发明授权
    Non-causal overlapped block prediction in variable block size video coding 有权

    公开(公告)号：US10419777B2

    公开(公告)日：2019-09-17

    申请号：US15387797

    申请日：2016-12-22

    Applicant: GOOGLE LLC

    Inventor： Debargha Mukherjee ,  Yue Chen

    IPC: H04N19/583 ,  H04N19/167 ,  H04N19/176

    Abstract: A method for processing a selected portion of a video, the selected portion of the video having a plurality of blocks. The method includes obtaining current prediction parameters for all of a plurality of adjacent blocks from the plurality of blocks that are adjacent to a current block from the plurality of blocks in the selected portion of the video, generating a base prediction for the current block from the plurality of blocks using the current prediction parameters associated with the current block, identifying adjacent prediction parameters from the current prediction parameters for a first adjacent block from the plurality of adjacent blocks, determining an overlap region within the current block and adjacent to the first adjacent block, and generating, for each pixel within the overlap region, an overlapped prediction for the pixel as a function of the base prediction and a prediction based on the adjacent prediction parameters.

    Adaptive overlapped block prediction in variable block size video coding
    14.
    发明授权
    Adaptive overlapped block prediction in variable block size video coding 有权

    公开(公告)号：US10390033B2

    公开(公告)日：2019-08-20

    申请号：US15173881

    申请日：2016-06-06

    Applicant: GOOGLE LLC

    Inventor： Debargha Mukherjee ,  Yue Chen

    IPC: G06T7/20 ,  G06T9/00 ,  H04N19/44 ,  H04N19/50 ,  H04N19/107 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/583

    Abstract: Decoding a current block of an encoded video stream may include generating a base prediction block for the current block based on current prediction parameters associated with the current block, identifying adjacent prediction parameters used for decoding a previously decoded adjacent block that is adjacent to the current block, and determining an overlap region within the current block and adjacent to the adjacent block. The overlap region has a size being determined as a function of a difference between the first prediction parameters and the adjacent prediction parameters. For each pixel within the overlap region, an overlapped prediction of a pixel value may be generated as a function of the base prediction and a prediction based on the adjacent prediction parameters.

    Combination of mode-dependent and fixed transform types in video coding
    17.
    发明授权
    Combination of mode-dependent and fixed transform types in video coding 有权

    公开(公告)号：US12003706B2

    公开(公告)日：2024-06-04

    申请号：US17700298

    申请日：2022-03-21

    Applicant: Google LLC

    Inventor： Lester Lu ,  Debargha Mukherjee ,  Elliott Karpilovsky

    IPC: H04N19/107 ,  H04N19/122 ,  H04N19/176 ,  H04N19/50

    CPC classification number: H04N19/107 ,  H04N19/122 ,  H04N19/176 ,  H04N19/50

    Abstract: Decoding video data includes, for a block encoded using a prediction mode, determining a transform mode for the block using the prediction mode. The transform mode is a first mode when the prediction mode is an inter-prediction mode and is a second mode when the prediction mode is an intra-prediction mode. The first mode is an available first transform type that is a combination of transforms selected from first fixed transforms and first learned transforms that each comprise a respective transformation matrix generated iteratively using blocks predicted using the inter-prediction mode. The second mode is an available second transform type that is a combination of transforms selected from second fixed transforms, which is a proper subset of the first fixed transforms, and a second learned transform comprising a transformation matrix that is generated iteratively using blocks predicted using the intra-prediction mode. Decoding the block uses the prediction and transform modes.

    Inter-Intra Prediction With Implicit Models
    18.
    发明公开
    Inter-Intra Prediction With Implicit Models 审中-公开

    公开(公告)号：US20230291925A1

    公开(公告)日：2023-09-14

    申请号：US18008209

    申请日：2020-07-01

    Applicant: Google LLC

    Inventor： Debargha Mukherjee ,  Yue Chen ,  Urvang Joshi ,  Sarah Parker ,  Elliott Karpilovsky ,  Hui Su

    IPC: H04N19/52 ,  H04N19/176 ,  H04N19/593 ,  H04N19/105

    CPC classification number: H04N19/52 ,  H04N19/176 ,  H04N19/593 ,  H04N19/105

    Abstract: Video coding in accordance with an inter-intra prediction model may include coding an inter-prediction motion vector for a current block of a current frame, obtaining spatial block-context pixels oriented relative to the current block, generating an inter-prediction block, generating a corresponding set of reference block-context pixels oriented relative to the inter-prediction block, identifying inter-intra prediction parameters that correspond with minimizing error between the spatial block-context pixels and the reference block-context pixels, generating a prediction block for the current block by, for a current pixel of the current block, obtaining an inter-prediction pixel, determining a predictor for the current pixel using a combination of the inter-prediction pixel and the inter-intra prediction parameters, and including the predictor in the prediction block.

    Vector Quantization for Prediction Residual Coding
    20.
    发明申请
    Vector Quantization for Prediction Residual Coding 有权

    公开(公告)号：US20230011893A1

    公开(公告)日：2023-01-12

    申请号：US17779692

    申请日：2019-12-23

    Applicant: Google LLC

    Inventor： Debargha Mukherjee ,  Lester Lu ,  Elliott Karpilovsky

    IPC: H04N19/126 ,  H04N19/176 ,  H04N19/463 ,  H04N19/12 ,  H04N19/60 ,  H04N19/119 ,  H04N19/42

    Abstract: Residual coding using vector quantization (VQ) is described. A flag indicating whether a residual block for the current block is encoded using VQ. In response to the flag indicating that the residual block is encoded using VQ, a parameter indicating an entry in a codebook is decoded, and the residual block is decoded using the entry. In response to the flag indicating that the residual block is not encoded using VQ, the residual block is decoded based on a skip flag indicating whether the current block is encoded using transform skip. The current block is reconstructed using the residual block.

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