公开(公告)号：US20250159185A1

公开(公告)日：2025-05-15

申请号：US19026989

申请日：2025-01-17

Applicant: ORANGE

Inventor： Félix Henry ,  Mohsen Abdoli ,  Pierrick Philippe ,  Gordon Clare

IPC: H04N19/136 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

Abstract: A method for decoding a coded data stream representing an image. The method includes for a current block: reading from the stream a block size threshold value; determining whether the current block size is less than or equal to the threshold value; if so, decoding information indicating a first or second coding mode and reconstructing the current block according to the indicated mode, and if not, reconstructing the current block according to the first mode. In the first mode the current block is reconstructed using an inverse transform of a transformed prediction residue decoded for the current block, and in the second mode the current block is not reconstructed using such an inverse transform, but by: scanning each pixel of the block, including: obtaining a prediction of the pixel from another previously decoded pixel, and reconstructing the pixel from the prediction and a decoded prediction residue.

公开(公告)号：US20240137486A1

公开(公告)日：2024-04-25

申请号：US18546859

申请日：2022-02-15

Applicant: ORANGE

Inventor： Pierrick Philippe ,  Théo Ladune

IPC: H04N19/103 ,  H04N19/182

CPC classification number: H04N19/103 ,  H04N19/182

Abstract: A method for determining at least one coding or decoding mode, from at least two coding or decoding modes, in order to encode or decode at least one current set of pixels. The at least one coding or decoding mode is determined from an analysis of at least one set of reference pixels.

公开(公告)号：US11516465B2

公开(公告)日：2022-11-29

申请号：US17277945

申请日：2019-09-03

Applicant: ORANGE

Inventor： Félix Henry ,  Mohsen Abdoli ,  Gordon Clare ,  Pierrick Philippe

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/80 ,  H04N19/85

Abstract: A method for decoding a data stream representative of an image split into blocks. For a current block of the image, an item of information indicating a coding mode among a first and a second coding mode of the current block is decoded from the data stream and the current block is decoded depending on this information. When the coding mode of the current block corresponds to the second coding mode, the current block is reconstructed from a prediction obtained, for each pixel, from another previously decoded pixel belonging to the current block or to a previously decoded block of the image, and from a decoded residue associated with the pixel. At least one processing method is applied to the reconstructed current block for at least one pixel of the current block depending on the coding mode of the current block and/or the coding mode of the neighbouring blocks.

公开(公告)号：US20210352272A1

公开(公告)日：2021-11-11

申请号：US17277945

申请日：2019-09-03

Applicant: ORANGE

Inventor： Félix Henry ,  Mohsen Abdoli ,  Gordon Clare ,  Pierrick Philippe

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/80 ,  H04N19/176

Abstract: A method for decoding a data stream representative of an image split into blocks. For a current block of the image, an item of information indicating a coding mode among a first and a second coding mode of the current block is decoded from the data stream and the current block is decoded depending on this information. When the coding mode of the current block corresponds to the second coding mode, the current block is reconstructed from a prediction obtained, for each pixel, from another previously decoded pixel belonging to the current block or to a previously decoded block of the image, and from a decoded residue associated with the pixel. At least one processing method is applied to the reconstructed current block for at least one pixel of the current block depending on the coding mode of the current block and/or the coding mode of the neighbouring blocks.

公开(公告)号：US10469872B2

公开(公告)日：2019-11-05

申请号：US15503603

申请日：2015-08-11

Applicant: Orange

Inventor： Pierrick Philippe ,  Adria Arrufat

IPC: H04N19/61 ,  H04N19/597 ,  H04N19/147 ,  H04N19/593 ,  H04N19/12 ,  H04N19/132 ,  H04N19/119 ,  H04N19/154 ,  H04N19/97 ,  H04N19/176 ,  H04N19/182

Abstract: A method is provided for encoding at least one image cut into blocks. The method includes, for a current block having K pixels to be encoded, wherein K>1, acts including: predicting the current block using at least one predictive block having K pixels; then determining a residual block having K pixels and representing the difference between the predictive block and the common block. A set of Mi data is determined from a pixel block group containing a number Mi of blocks having K pixels and each representing a predetermined texture, wherein 1

公开(公告)号：US10373622B2

公开(公告)日：2019-08-06

申请号：US15146362

申请日：2016-05-04

Applicant: Orange

Inventor： Julien Faure ,  Pierrick Philippe

IPC: G10L19/02 ,  G10L19/022 ,  G10L19/00

Abstract: A method and device are provided for coding or decoding a digital audio signal by transform using analysis or synthesis weighting windows applied to sample frames. The method includes an irregular sampling of an initial window provided for a transform of given initial size N, to apply a secondary transform of size M different from N.

公开(公告)号：US20170230688A1

公开(公告)日：2017-08-10

申请号：US15503603

申请日：2015-08-11

Applicant: Orange

Inventor： Pierrick Philippe ,  Adria Arrufat

IPC: H04N19/597 ,  H04N19/119 ,  H04N19/154

CPC classification number: H04N19/597 ,  H04N19/119 ,  H04N19/12 ,  H04N19/132 ,  H04N19/147 ,  H04N19/154 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593 ,  H04N19/97

Abstract: A method is provided for encoding at least one image cut into blocks. The method includes, for a current block having K pixels to be encoded, wherein K>1, acts including: predicting the current block using at least one predictive block having K pixels; then determining a residual block having K pixels and representing the difference between the predictive block and the common block. A set of Mi data is determined from a pixel block group containing a number Mi of blocks having K pixels and each representing a predetermined texture, wherein 1

公开(公告)号：US12244815B2

公开(公告)日：2025-03-04

申请号：US18171934

申请日：2023-02-21

Applicant: ORANGE

Inventor： Félix Henry ,  Mohsen Abdoli ,  Pierrick Philippe ,  Gordon Clare

IPC: H04N19/136 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

Abstract: A method for decoding a coded data stream representing an image. The method includes for a current block: reading from the stream a block size threshold value; determining whether the current block size is less than or equal to the threshold value; if so, decoding information indicating a first or second coding mode and reconstructing the current block according to the indicated mode, and if not, reconstructing the current block according to the first mode. In the first mode the current block is reconstructed using an inverse transform of a transformed prediction residue decoded for the current block, and in the second mode the current block is not reconstructed using such an inverse transform, but by: scanning each pixel of the block, including: obtaining a prediction of the pixel from another previously decoded pixel, and reconstructing the pixel from the prediction and a decoded prediction residue.

公开(公告)号：US10750206B2

公开(公告)日：2020-08-18

申请号：US15780032

申请日：2016-11-29

Applicant: Orange

Inventor： Adria Arrufat ,  Pierrick Philippe

IPC: G06K9/00 ,  H04N19/85 ,  H04N19/60 ,  H04N19/117 ,  H04N19/625

Abstract: A method for encoding at least one image split into blocks. The method includes, for a current block to be encoded from the image, at least one modification of two data points in the block via an operation of linear combinations operating on the two data points, at the end of which a modified block is obtained, application of a separable transform operation to the data points in the modified block, and encoding the data points obtained after application of the separable transform operation.

公开(公告)号：US20190335180A1

公开(公告)日：2019-10-31

申请号：US16343625

申请日：2017-10-16

Applicant: ORANGE

Inventor： Pierrick Philippe ,  Kevin Reuze

IPC: H04N19/136 ,  H04N19/463 ,  H04N19/103 ,  H04N19/157

Abstract: A method and device for coding at least one current image parameter, wherein, in relation to a zone of a current image, the method implements the following: as a function of the value of at least one parameter of an image zone which precedes that zone of the current image, selecting a scheme for coding the at least one current image parameter, from among at least two predetermined coding schemes, and coding the value of the at least one current image parameter with the aid of the selected coding scheme.