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    Methods and devices for coding and decoding a data stream representative of at least one image
    3.
    发明授权
    Methods and devices for coding and decoding a data stream representative of at least one image 有权

    公开(公告)号：US11736721B2

    公开(公告)日：2023-08-22

    申请号：US17560851

    申请日：2021-12-23

    Applicant: ORANGE

    Inventor： Felix Henry ,  Mohsen Abdoli

    IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/147

    CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/147

    Abstract: A method and device for encoding and a method and device for decoding a signal including encoded data representing an image sub-divided into blocks, and information representing a correction block and a residual block. For a current block of the image, a first pixel is encoded from a prediction value obtained for the first pixel from at least one pixel of a previously rebuilt block. The prediction is corrected using at least one value of a pixel of the correction block. At least one current pixel of the current block is encoded from a prediction value obtained for the current pixel from at least one previously corrected pixel of the current block. The prediction is corrected by using at least one value of a pixel of the correction block, delivering a prediction block for the current block. The residual block is computed from the current block and the predictive block.

    Method for encoding and decoding images, encoding and decoding device, and corresponding computer programs
    4.
    发明授权
    Method for encoding and decoding images, encoding and decoding device, and corresponding computer programs 有权

    公开(公告)号：US11284085B2

    公开(公告)日：2022-03-22

    申请号：US16628467

    申请日：2018-06-28

    Applicant: ORANGE

    Inventor： Joel Jung ,  Felix Henry ,  Bappaditya Ray

    IPC: H04N19/14 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176

    Abstract: A method and device for encoding an image divided into blocks. The image contains separate first and second zones). The encoding implements the following, for at least one current block of the image: determining to which of the first and second zones the current block pertains; if the current block pertains to the first zone, encoding the current block by using a first encoding method; if the current block pertains to the second zone, encoding the current block by using a second encoding method including the following: from the position of the current block in the second zone, identifying a previously encoded, then decoded block located in the first zone of the image; and reproducing the value of at least one encoding parameter associated with the identified block.

    METHOD FOR ENCODING AND DECODING IMAGES, ENCODING AND DECODING DEVICE, AND CORRESPONDING COMPUTER PROGRAMS
    5.
    发明申请
    METHOD FOR ENCODING AND DECODING IMAGES, ENCODING AND DECODING DEVICE, AND CORRESPONDING COMPUTER PROGRAMS 审中-公开

    公开(公告)号：US20200084477A1

    公开(公告)日：2020-03-12

    申请号：US16493624

    申请日：2018-03-12

    Applicant: Orange

    Inventor： Felix Henry ,  Joel Jung ,  Bappaditya Ray

    IPC: H04N19/70 ,  H04N19/46 ,  H04N19/176 ,  H04N19/136 ,  H04N19/102 ,  H04N19/61

    Abstract: A method of encoding at least one image divided into blocks, implementing: encoding a first syntax element associated with a characteristic of the at least one image; encoding, for a current block to be encoded associated with at least one encoding parameter, the data of the current block; if the first syntax element is encoded according to a first predefined value representing the characteristic of the image, a second syntax element representing the value of the at least one encoding parameter is encoded only if the current block belongs to a predefined zone of the image; if the first syntax element is encoded according to a second predefined value representing the characteristic of the image, the second syntax element is encoded, whether or not the current block belongs to the predefined zone.

    IMAGE ENCODING AND DECODING METHOD, ENCODING AND DECODING DEVICE AND CORRESPONDING COMPUTER PROGRAMS
    6.
    发明申请
    IMAGE ENCODING AND DECODING METHOD, ENCODING AND DECODING DEVICE AND CORRESPONDING COMPUTER PROGRAMS 审中-公开

    公开(公告)号：US20180070078A1

    公开(公告)日：2018-03-08

    申请号：US15551799

    申请日：2016-02-18

    Applicant: Orange

    Inventor： Felix Henry ,  Bihong Huang

    IPC: H04N19/107 ,  H04N19/176 ,  H04N19/94 ,  H04N19/13 ,  H04N19/12

    Abstract: A method for encoding at least one image divided into blocks. The method implements, for a current block to be encoded: determining a first prediction type for the current block; determining a prediction procedure associated with the first prediction type; obtaining a predictor block on the basis of the determined prediction procedure; and calculating a residual block that represents the difference between the predictor block obtained and the current block. The method also includes: selecting a prediction procedure from among a plurality of prediction procedures of a second type, different from the first type; and encoding the residual block calculated by using an encoding parameter determined on the basis of the selected prediction procedure.

    Method for encoding and decoding images, device for encoding and decoding images and corresponding computer programs
    8.
    发明授权
    Method for encoding and decoding images, device for encoding and decoding images and corresponding computer programs 有权

    公开(公告)号：US10397570B2

    公开(公告)日：2019-08-27

    申请号：US15031966

    申请日：2014-10-21

    Applicant: Orange

    Inventor： Felix Henry

    IPC: H04N19/119 ,  H04N19/102 ,  H04N19/157 ,  H04N19/18 ,  H04N19/184 ,  H04N19/463 ,  H04N19/176

    Abstract: A method is providing for encoding at least one image cut into blocks. The method implements, for a current block to be encoded, acts of: predicting the current block in accordance with a prediction mode selected among predetermined prediction modes; obtaining a predictor block; determining a residual data set, representative of the difference between the predictor block obtained and the current block, the residual data being likely to have an amplitude and a sign; selecting, from the residual data set, a piece of residual data assigned an amplitude and a sign, using a predetermined criterion which is a function of the selected prediction mode; obtaining a predicted value of the sign of the selected piece of residual data; calculating information representing the difference between the predicted value of the sign and the value of the sign of the selected piece of residual data; and encoding the calculated information.

    Method for composing an intermediate video representation
    9.
    发明授权
    Method for composing an intermediate video representation 有权

    公开(公告)号：US10298933B2

    公开(公告)日：2019-05-21

    申请号：US15527949

    申请日：2015-11-24

    Applicant: Orange

    Inventor： Patrice Houze ,  Felix Henry

    IPC: H04N19/15 ,  H04N19/103 ,  H04N19/17 ,  H04N19/48 ,  H04N19/40 ,  H04N19/184 ,  H04N19/176 ,  H04N19/174

    Abstract: A method for composing an intermediate representation of a video sequence from at least two different representations of the video sequence, the at least two representations being spatially partitioned into a plurality of tiles, each tile being associated with compressed data in the representation. The method is such that the tiles can be decoded independently from one another and at a given time the various representations are partitioned identically. The method includes selecting, according to at least one selection criterion, a set of tiles forming a partition of the sequence from the at least two representations, and composing an intermediate representation of the video sequence from compressed data associated with the selected set of tiles. The method can be implemented in a video decoding terminal or broadcasting server.

    METHOD FOR COMPOSING AN INTERMEDIATE VIDEO REPRESENTATION
    10.
    发明申请
    METHOD FOR COMPOSING AN INTERMEDIATE VIDEO REPRESENTATION 审中-公开

    公开(公告)号：US20170332080A1

    公开(公告)日：2017-11-16

    申请号：US15527949

    申请日：2015-11-24

    Applicant: Orange

    Inventor： Patrice Houze ,  Felix Henry

    IPC: H04N19/15 ,  H04N19/184 ,  H04N19/17 ,  H04N19/40 ,  H04N19/103

    CPC classification number: H04N19/15 ,  H04N19/103 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/40 ,  H04N19/48

    Abstract: A method for composing an intermediate representation of a video sequence from at least two different representations of the video sequence, the at least two representations being spatially partitioned into a plurality of tiles, each tile being associated with compressed data in the representation. The method is such that the tiles can be decoded independently from one another and at a given time the various representations are partitioned identically. The method includes selecting, according to at least one selection criterion, a set of tiles forming a partition of the sequence from the at least two representations, and composing an intermediate representation of the video sequence from compressed data associated with the selected set of tiles. The method can be implemented in a video decoding terminal or broadcasting server.

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