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    IN-LOOP RESHAPING ADAPTIVE RESHAPER DIRECTION
    23.
    发明申请
    IN-LOOP RESHAPING ADAPTIVE RESHAPER DIRECTION 有权

    公开(公告)号：US20220191481A1

    公开(公告)日：2022-06-16

    申请号：US17438057

    申请日：2020-03-12

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Pierre ANDRIVON ,  Christophe CHEVANCE ,  Edouard FRANCOIS

    IPC: H04N19/117 ,  H04N19/82 ,  H04N19/159 ,  H04N19/176 ,  G06F1/03

    Abstract: A method and apparatus for performing a forward mapping function or its inverse is implemented through information conveyed in a bitstream to perform mapping. The information can be implemented in a uniform or non-uniform lookup table. A decoder can receive the information and derive the inverse function to be used. In one embodiment, a decoder receives information representative of an inverse mapping function and uses the information to implement an inverse mapping lookup table for intra coded picture portions and can derive a forward mapping lookup table to be used with an inverse mapping lookup table for inter coded picture portions.

    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING USING PATTERN-BASED BLOCK FILTERING
    25.
    发明申请
    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING USING PATTERN-BASED BLOCK FILTERING 有权

    公开(公告)号：US20220086437A1

    公开(公告)日：2022-03-17

    申请号：US17516354

    申请日：2021-11-01

    Applicant: InterDigital VC Holdings, Inc.

    Inventor： Philippe BORDES ,  Philippe DE LAGRANGE ,  Edouard FRANCOIS

    IPC: H04N19/117 ,  H04N19/176 ,  H04N19/70 ,  H04N19/80 ,  H04N19/174

    Abstract: Methods (1100, 1300) and apparatuses (600, 1200) for video coding and decoding are provided. The method of video encoding includes accessing (1110) a reconstructed block corresponding to a block in a picture of a video, determining (1120) at least one filter pattern based on a property of the block and filtering (1130) the reconstructed block according to the at least one filter pattern. The method of video decoding includes accessing (1310) a reconstructed block corresponding to a block in a picture of an encoded video, determining (1320) at least one filter pattern based on a property of the block and filtering (1330) the reconstructed block according to the at least one filter pattern. A bitstream formatted to include encoded data, a computer-readable storage medium and a computer program product are also described.

    METADATA TRANSLATION IN HDR DISTRIBUTION
    27.
    发明申请
    METADATA TRANSLATION IN HDR DISTRIBUTION 有权

    公开(公告)号：US20210274226A1

    公开(公告)日：2021-09-02

    申请号：US17255468

    申请日：2019-05-21

    Applicant: InterDigital VC Holdings. Inc.

    Inventor： Pierre ANDRIVON ,  Edouard FRANCOIS ,  Patrick PEREZ

    IPC: H04N21/235 ,  H04N21/2343 ,  H04N21/236 ,  H04N9/77

    Abstract: A method provides translation of metadata related to enhancement of a video signal according to a first high dynamic range video distribution type into metadata related to enhancement of a video signal according to a second high dynamic range video distribution type. Translation is done between a value of a first metadata set corresponding to a first type of high dynamic range video and a value of a second metadata set corresponding to a second type of high dynamic range video and uses an association that may be stored in a lookup table that is determined according to differences between a test image reconstructed using the metadata of first type and the same image reconstructed using the metadata of second type. A receiver apparatus and a transmitter apparatus comprising the translation method are also disclosed.

    METHOD AND APPARATUS FOR MOTION VECTOR PREDICTOR ADAPTATION FOR OMNIDIRECTIONAL VIDEO
    28.
    发明申请
    METHOD AND APPARATUS FOR MOTION VECTOR PREDICTOR ADAPTATION FOR OMNIDIRECTIONAL VIDEO 审中-公开

    公开(公告)号：US20200275110A1

    公开(公告)日：2020-08-27

    申请号：US16647663

    申请日：2018-09-14

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Franck GALPIN ,  Tangi POIRIER ,  Edouard FRANCOIS

    IPC: H04N19/33 ,  H04N19/31 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176

    Abstract: A method and apparatus adapts motion vector prediction for suitability to omnidirectional video. One embodiment improves handling of temporal motion vector predictors or rescaled motion vector predictors. Another embodiment is suited to spatial motion vector predictors, and another to a combination of either temporal or spatial motion vector predictors. The method analyzes a scale factor derived from, at least one of, the time index of the predictor, the time index of the reference image's predictor, the time index of a reference image's current block, and the time index of the current block. If, for example, the scale factor is greater than one, motion vector transformation is performed before motion vector rescaling. If, however, the scale factor is less than or equal to one, the motion vector rescaling is performed before motion vector transformation.

    SIMPLIFICATIONS OF CODING MODES BASED ON NEIGHBORING SAMPLES DEPENDENT PARAMETRIC MODELS
    30.
    发明申请
    SIMPLIFICATIONS OF CODING MODES BASED ON NEIGHBORING SAMPLES DEPENDENT PARAMETRIC MODELS 有权

    公开(公告)号：US20220078405A1

    公开(公告)日：2022-03-10

    申请号：US17291164

    申请日：2019-11-01

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Edouard FRANCOIS ,  Fabrice LELEANNEC ,  Tangi POIRIER

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

    Abstract: Aspects aim at improving and simplifying the design of modes similar to CCLM or LIC, that are based on neighboring samples dependent parametric models. Proposed modifications relate to ways of deriving the parameters of the parametric model and designing the parametric-model-based prediction tools contained in a codec in a unified and simplified way. In one embodiment, an approach proposes a simplification of the Cross-component linear model process for deriving the linear parameters. It is proposed to replace the Least Mean Squared method to derive parameters instead as parameters of a straight line passing through two points corresponding to the minimum and maximum luma values among all the luma neighboring reconstructed samples.

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