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    Method and device for generating a second image from a first image
    1.
    发明授权
    Method and device for generating a second image from a first image 有权

    公开(公告)号：US11544824B2

    公开(公告)日：2023-01-03

    申请号：US16762928

    申请日：2018-11-06

    Applicant: InterDigital VC Holdings, Inc.

    Inventor： Pierre Andrivon ,  Marie-Jean Colaitis ,  David Touze ,  Joan Llach Pinsach

    IPC: G06V10/00 ,  G06T5/00 ,  H04N19/46 ,  H04N19/85 ,  H04N9/68 ,  H04N9/73

    Abstract: Described are methods and devices for applying a color gamut mapping process on a first image to generate a second image, where the content of the first and second images is similar but the respective color spaces of the first and second images are different. The color gamut mapping process may be controlled using a color gamut mapping mode obtained from a bitstream where the color gamut mapping mode belongs to a set comprising at least two preset modes and an explicit parameters mode. If the obtained color gamut mapping mode is the explicit parameters mode and the color gamut mapping process is not enabled for the explicit parameters mode, the color gamut mapping process may be controlled by a substitute color gamut mapping mode determined from additional data.

    METHOD AND DEVICE FOR RECONSTRUCTING IMAGE DATA FROM DECODED IMAGE DATA
    5.
    发明申请
    METHOD AND DEVICE FOR RECONSTRUCTING IMAGE DATA FROM DECODED IMAGE DATA 有权

    公开(公告)号：US20220167019A1

    公开(公告)日：2022-05-26

    申请号：US17669218

    申请日：2022-02-10

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Pierre Andrivon ,  David Touze ,  Nicolas Caramelli

    IPC: H04N19/65 ,  H04N19/44

    Abstract: A method or device for reconstructing image data representative of original image data from decoded image data and parameters obtained from a bitstream is described. The parameters having been processed from the original image data. The method includes checking if parameters are lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to, when at least one of the parameters is lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to; selecting a recovery mode according to an information data indicating how the parameters have been processed; and recovering the at least one lost, corrupted or not aligned parameter by applying the selected recovery mode, the reconstruction of image data then taking also into account the recovered parameters.

    Method and apparatus of encoding and decoding a color picture
    6.
    发明授权
    Method and apparatus of encoding and decoding a color picture 有权

    公开(公告)号：US10390027B2

    公开(公告)日：2019-08-20

    申请号：US15547512

    申请日：2016-01-25

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Sebastien Lasserre ,  Fabrice Leleannec ,  Piere Andrivon ,  David Touze

    IPC: H04N19/186 ,  H04N19/00 ,  H04N19/30 ,  H04N19/85

    Abstract: The present disclosure generally relates to a method and device of encoding a color picture having color components (Ec) comprising obtaining (11) a luminance component (L) and two chrominance components (C1, C2) from the color picture to be encoded. The method for encoding a color picture having color components comprising obtaining at least one chrominance component from the color picture to be encoded, the method further comprises: ⋅—determining a first factor based on the value of each pixel (i) of said luminance component; ⋅—obtaining at least one final chrominance component by scaling said at least one chrominance component by said first factor; and ⋅—encoding (13) said at least one final chrominance component.

    Processing an image
    10.
    发明授权
    Processing an image 有权

    公开(公告)号：US11785193B2

    公开(公告)日：2023-10-10

    申请号：US16771523

    申请日：2018-12-11

    Applicant: InterDigital VC Holdings, Inc.

    Inventor： Pierre Andrivon ,  David Touze ,  Catherine Serre

    IPC: H04N9/64

    CPC classification number: H04N9/64

    Abstract: At least one embodiment obtain a method for reconstructing an image from metadata representing a given color space, comprising mapping said given color space to a candidate color space which encompasses in its convex hull all the primaries of the given color space; and reconstructing the image using said candidate color space.

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