公开(公告)号：US11962761B2

公开(公告)日：2024-04-16

申请号：US17973966

申请日：2022-10-26

Applicant: ORANGE

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

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/80 ,  H04N19/85

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  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：US20230050410A1

公开(公告)日：2023-02-16

申请号：US17973966

申请日：2022-10-26

Applicant: ORANGE

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

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

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：US20140348223A1

公开(公告)日：2014-11-27

申请号：US14356804

申请日：2012-11-06

Applicant: Orange

Inventor： Felix Henry ,  Gordon Clare

IPC: H04N19/196 ,  H04N19/167

CPC classification number: H04N19/50 ,  H04N19/117 ,  H04N19/13 ,  H04N19/147 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/197 ,  H04N19/46 ,  H04N19/463 ,  H04N19/467 ,  H04N19/48 ,  H04N19/85 ,  H04N19/91

Abstract: A method is provided for coding at least one image split up into partitions, a current partition to be coded containing data, at least one data item of which is allotted a sign. The coding method includes, for the current partition, the following steps: calculating the value of a function representative of the data of the current partition with the exclusion of the sign; comparing the calculated value with a predetermined value of the sign; as a function of the result of the comparison, modifying or not modifying at least one of the data items of the current partition, in the case of modification, coding the at least one modified data item.

Abstract translation: 提供了一种用于对分割成分区的至少一个图像进行编码的方法，用于编码的数据的当前分区包含数据，其中至少一个数据项被分配有符号。 编码方法包括对于当前分区的以下步骤：计算代表当前分区的数据的函数的值，排除符号; 将所述计算值与所述符号的预定值进行比较; 作为比较结果的功能，在修改的情况下，修改或不修改当前分区的至少一个数据项，对至少一个修改的数据项进行编码。

公开(公告)号：US11985355B2

公开(公告)日：2024-05-14

申请号：US17277938

申请日：2019-09-03

Applicant: ORANGE

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

Abstract: A method for decoding a coded data stream representative of at least one image that is split into blocks. For at least one block of the image, referred to as the current block, an item of information indicating a coding mode of the current block is decoded from the data stream. When the coding mode of the current block corresponds to a first coding mode, decoding a prediction residue associated with the current block using a first group of syntax elements. When the coding mode of the current block corresponds to a second coding mode, decoding the prediction residue associated with the current block using a second group of syntax elements, which is a subgroup of syntax elements of the first group of syntax elements.

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：US10805623B2

公开(公告)日：2020-10-13

申请号：US16073917

申请日：2017-01-17

Applicant: Orange

Inventor： Felix Henry ,  Gordon Clare

IPC: H04N19/44 ,  H04N19/46 ,  H04N19/70 ,  H04N19/18 ,  H04N19/136 ,  H04N19/13 ,  H04N19/176 ,  H04N19/91

Abstract: A method for decoding a signal of encoded digital data, which includes, for at least one part of the signal: determining information representing a characteristic of the encoded data contained in the at least one signal part; determining first and second values of at least one datum required for the decoding of the data; decoding the data based on the first value to obtain a first characteristic of the decoded data; decoding the data based on the second value to obtain a second characteristic of the decoded data; selecting the first or the second value according to the information representing a characteristic of the encoded data and according to the first and second characteristics of the decoded data; and reconstructing the data based on the first or the second value, which has been selected.

公开(公告)号：US20190045205A1

公开(公告)日：2019-02-07

申请号：US16073917

申请日：2017-01-17

Applicant: Orange

Inventor： Felix Henry ,  Gordon Clare

IPC: H04N19/44 ,  H04N19/46

CPC classification number: H04N19/44 ,  H04N19/13 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/70 ,  H04N19/91

Abstract: A method for decoding a signal of encoded digital data, which includes, for at least one part of the signal: determining information representing a characteristic of the encoded data contained in the at least one signal part; determining first and second values of at least one datum required for the decoding of the data; decoding the data based on the first value to obtain a first characteristic of the decoded data; decoding the data based on the second value to obtain a second characteristic of the decoded data; selecting the first or the second value according to the information representing a characteristic of the encoded data and according to the first and second characteristics of the decoded data; and reconstructing the data based on the first or the second value, which has been selected.

公开(公告)号：US20150078454A1

公开(公告)日：2015-03-19

申请号：US14388658

申请日：2013-03-06

Applicant: Orange

Inventor： Felix Henry ,  Stéphane Pateux ,  Gordon Clare

IPC: H04N19/91 ,  H04N19/44

CPC classification number: H04N19/91 ,  H04N19/13 ,  H04N19/167 ,  H04N19/174 ,  H04N19/197 ,  H04N19/436 ,  H04N19/44 ,  H04N19/61

Abstract: A coding method includes cutting an image into a plurality of blocks containing symbols. Adjacent pairs of blocks are grouped into a predetermined number of tiles of the image. An entropy coder codes each tile by associating digital information with the symbols of each block of a tile under consideration, Coding includes, for the first block of the image, a substep of initializing state variables of the entropy coder. At least one data substream is generated and representative of at least one of the coded tiles. When the current block of the tile forms a boundary with an adjacent edge of a neighboring tile, the method includes writing in the substream all of the digital information that has been associated with the symbols during the coding, for the tile under consideration, of the blocks preceding the current block, and performing the initialization substep.

Abstract translation: 编码方法包括将图像切割成包含符号的多个块。 相邻的块对被分组成图像的预定数量的瓦片。 熵编码器通过将数字信息与考虑的瓦片的每个块的符号相关联来对每个瓦片进行编码，对于图像的第一块，编码包括初始化熵编码器的状态变量的子步骤。 生成至少一个数据子流并代表编码瓦片中的至少一个。 当瓦片的当前块与相邻瓦片的相邻边缘形成边界时，该方法包括在编码期间在子流中写入与所考虑的瓦片相关联的与符号相关联的所有数字信息， 在当前块之前的块，并执行初始化子步骤。

公开(公告)号：US20240244266A1

公开(公告)日：2024-07-18

申请号：US18616937

申请日：2024-03-26

Applicant: ORANGE

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

Abstract: A method for decoding a coded data stream representative of at least one image that is split into blocks. For at least one block of the image, referred to as the current block, an item of information indicating a coding mode of the current block is decoded from the data stream. When the coding mode of the current block corresponds to a first coding mode, decoding a prediction residue associated with the current block using a first group of syntax elements. When the coding mode of the current block corresponds to a second coding mode, decoding the prediction residue associated with the current block using a second group of syntax elements, which is a subgroup of syntax elements of the first group of syntax elements.

公开(公告)号：US20230199193A1

公开(公告)日：2023-06-22

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

CPC classification number: H04N19/136 ,  H04N19/61 ,  H04N19/119 ,  H04N19/176

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.