公开(公告)号：WO2017194401A3

公开(公告)日：2017-11-16

申请号：PCT/EP2017/060759

申请日：2017-05-05

Applicant: THOMSON LICENSING

Inventor： LASSERRE, Sebastien ,  ANDRIVON, Pierre ,  BORDES, Philippe

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/91 ,  H04N19/129 ,  H04N19/18

Abstract: The present principles relate to a method and device for context-adaptive binary arithmetic coding a sequence of binary symbols representing a syntax element related to video data or a syntax element relative to a video data. The method comprises, for each binary symbol of the sequence of binary symbols: - obtaining (100) a context value from a context model defined for the binary symbol, said context value comprising bits representing the probability, called a first probability p, for the binary symbol to be equal to a binary value; - determining (110) a second probability p' by modifying said first probability p according to at least one previously coded binary symbol of the sequence of binary symbols; - arithmetic coding (120) the binary symbol based on said second probability p'; and - updating and storing (130) the first probability p of said context value

Abstract translation: 本原理涉及用于上下文自适应二进制算术编码的二进制符号序列的方法和设备，所述二进制符号序列表示与视频数据相关的语法元素或相对于视频数据的语法元素。 该方法包括：对于二进制符号序列的每个二进制符号： - 从为二进制符号定义的上下文模型获得（100）上下文值，所述上下文值包括表示该概率的比特，称为第一概率p， 二进制符号等于一个二进制值; - 通过根据所述二进制符号序列中的至少一个先前编码的二进制符号修改所述第一概率p来确定（110）第二概率p' - 基于所述第二概率p'对所述二进制符号进行算术编码（120）;以及 - 和 - 更新和存储（130）所述上下文值的第一概率p

公开(公告)号：WO2016131970A1

公开(公告)日：2016-08-25

申请号：PCT/EP2016/053585

申请日：2016-02-19

Applicant: THOMSON LICENSING

Inventor： OLIVIER, Yannick ,  LASSERRE, Sébastien ,  ANDRIVON, Pierre ,  BORDES, Philippe

IPC: H04N1/60 ,  H04N1/62

CPC classification number: H04N1/6063 ,  H04N1/6025 ,  H04N19/46

Abstract: Color mapping information can be used to transform one color to another color. The present embodiments provide a solution for representing the color mapping information using a successive application of multiple color mapping functions. Parameters for the multiple color mapping functions can be encoded into a bitstream. In one embodiment, color mapping functions are consecutively applied on their own domains of definition only. In another embodiment, the first color mapping (CRI1) is applied on its domain of definition only, but the second color mapping is applied only on samples that have been previously color mapped by CRI1 and which are also inside the domain of definition of the second color mapping function. At the decode side, the multiple color mapping functions can be reconstructed and successively applied to a decoded picture to generate another picture.

Abstract translation: 颜色映射信息可用于将一种颜色转换为另一种颜色。 本实施例提供了使用多个颜色映射函数的连续应用来表示颜色映射信息的解决方案。 多色映射函数的参数可以被编码为比特流。 在一个实施例中，颜色映射功能被连续地应用在它们自己的定义域上。 在另一个实施例中，第一颜色映射（CRI1）仅应用在其定义域上，但是第二颜色映射仅应用于已经由CRI1预先被颜色映射并且也在第二颜色映射的定义域内的样本 颜色映射功能。 在解码侧，多重颜色映射功能可被重建并连续地应用于解码图像以产生另一图像。

公开(公告)号：WO2016120420A1

公开(公告)日：2016-08-04

申请号：PCT/EP2016/051868

申请日：2016-01-29

Applicant: THOMSON LICENSING

Inventor： LELEANNEC, Fabrice ,  LASSERRE, Sébastien ,  ANDRIVON, Pierre ,  BORDES, Philippe ,  FRANCOIS, Edouard

IPC: H04N19/463 ,  H04N19/467

CPC classification number: H04N19/98 ,  H04N19/122 ,  H04N19/139 ,  H04N19/147 ,  H04N19/186 ,  H04N19/44 ,  H04N19/463 ,  H04N19/467 ,  H04N19/70 ,  H04N19/96

Abstract: To preserve backward compatibility with a non-HDR device or service, an HDR picture may be represented using a modulation value and an SDR picture representative of the HDR picture. The modulation value and the SDR picture can then be encoded into the bitstream. At the receiving side, the modulation value and the SDR picture can be decoded. Based on the modulation value, the SDR picture can be mapped to a decoded HDR picture. For a non-HDR device or service, the modulation value information may be discarded and only the SDR picture is decoded. In particular, the modulation value may be implicitly signaled, using quad-tree representation information, intra coding information, inter partition mode information or motion vector residual information.

Abstract translation: 为了保持与非HDR设备或服务的向后兼容性，可以使用代表HDR图像的调制值和SDR图像来表示HDR图像。 然后可以将调制值和SDR图像编码到比特流中。 在接收侧，可以对调制值和SDR图像进行解码。 基于调制值，SDR图像可以映射到解码的HDR图像。 对于非HDR设备或服务，可以丢弃调制值信息，并且仅对SDR图像进行解码。 具体地，可以使用四叉树表示信息，帧内编码信息，分区间模式信息或运动矢量残差信息来隐式地发送调制值。

公开(公告)号：WO2015193113A1

公开(公告)日：2015-12-23

申请号：PCT/EP2015/062472

申请日：2015-06-04

Applicant: THOMSON LICENSING

Inventor： FRANCOIS, Edouard ,  LASSERRE, Sebastien ,  LELEANNEC, Fabrice ,  ANDRIVON, Pierre ,  OLIVIER, Yannick ,  TOUZE, David

IPC: H04N19/30 ,  H04N19/70

CPC classification number: H04N19/70 ,  H04N19/30

Abstract: The present disclosure generally relates to a method for signaling, in a bitstream representing a LDR picture and an illumination picture both obtained from an HDR picture, both a picture/video format of a decoded version of said LDR picture, called an output LDR format, and a picture/video format of a decoded version of said HDR picture, called an output HDR format, the method comprising encoding in the bitstream a first syntax element defining the output LDR format. The method is characterized in that it further comprises encoding in the bitstream a second syntax element which is distinct from the first syntax element and which defines the output HDR format. The disclosure further relates to an encoding/decoding method/device, a computer program product, a processor readable medium, a non-transitory storage medium and a signal.

Abstract translation: 本公开一般涉及一种用于在表示从HDR图像获得的LDR图像和照明图像的比特流中发送所述LDR图像的解码版本的图像/视频格式，称为输出LDR格式的信号的方法， 以及称为输出HDR格式的所述HDR图像的解码版本的图像/视频格式，所述方法包括在比特流中对定义输出LDR格式的第一语法元素进行编码。 该方法的特征在于，其还包括在比特流中编码与第一语法元素不同并且定义输出HDR格式的第二语法元素。 本公开还涉及编码/解码方法/设备，计算机程序产品，处理器可读介质，非暂时性存储介质和信号。

公开(公告)号：WO2015128268A1

公开(公告)日：2015-09-03

申请号：PCT/EP2015/053670

申请日：2015-02-23

Applicant: THOMSON LICENSING

Inventor： ANDRIVON, Pierre ,  BORDES, Philippe ,  FRANCOIS, Edouard

IPC: H04N1/32

CPC classification number: H04N5/202 ,  H04N7/035 ,  H04N9/68 ,  H04N9/69 ,  H04N21/83

Abstract: The present disclosure generally relates to a bitstream relative to a video signal characterized in that it carries an information data which identifies an electro-optical-transfer-function intended to be applied on the video signal before rendering the video signal on a video display. The disclosure further relates to a method for generating such a bitstream and a method for obtaining an electro-optical-transfer-function intended to be applied on a video signal before rendering the video signal on a video display.

Abstract translation: 本公开通常涉及相对于视频信号的比特流，其特征在于，其携带在将视频信号呈现在视频显示器之前识别要应用于视频信号的电光传输函数的信息数据。 本公开还涉及一种用于生成这样的比特流的方法和用于在将视频信号呈现在视频显示器之前获得旨在应用于视频信号的电光传输函数的方法。

公开(公告)号：WO2015049111A1

公开(公告)日：2015-04-09

申请号：PCT/EP2014/069932

申请日：2014-09-18

Applicant: THOMSON LICENSING

Inventor： BORDES, Philippe ,  TURKAN, Mehmet ,  ANDRIVON, Pierre

IPC: H04N19/30

CPC classification number: H04N19/30

Abstract: A method for creating a color LUT from at least a first picture and a second picture is disclosed. The color LUT is defined as a grid of vertices dividing a color space into regions. The method comprises obtaining, for each region R i , the color value of each of its vertices from pixels of the first picture whose color value belong to the region R i and from spatially corresponding pixels in the second picture.

Abstract translation: 公开了一种从至少第一图像和第二图像创建颜色LUT的方法。 颜色LUT被定义为将颜色空间分割成区域的顶点的网格。 该方法包括从颜色值属于区域Ri的第一图像的像素和第二图像中的空间对应像素获得每个区域Ri的每个顶点的颜色值。

公开(公告)号：WO2013144197A1

公开(公告)日：2013-10-03

申请号：PCT/EP2013/056505

申请日：2013-03-27

Applicant: THOMSON LICENSING

Inventor： BORDES, Philippe ,  ANDRIVON, Pierre ,  SALMON, Philippe

IPC: H04N7/36 ,  H04N7/26

CPC classification number: H04N19/573 ,  H04N19/105 ,  H04N19/14 ,  H04N19/174

Abstract: The method for predicting a block of a current image from at least one current reference image I k comprises steps for: - determining (20), for the block, at least one implicit weighted parameter, and - determining (22) a predictor for the block from the current reference image using the implicit weighted parameter. The at least one implicit weighted parameter is determined from at least one weighted parameter of at least one reference image.

Abstract translation: 用于从至少一个当前参考图像Ik预测当前图像的块的方法包括以下步骤： - 对于块，确定（20）至少一个隐式加权参数，以及 - 确定（22）块的预测器 从当前参考图像中使用隐式加权参数。 从至少一个参考图像的至少一个加权参数确定至少一个隐式加权参数。

公开(公告)号：WO2019101373A1

公开(公告)日：2019-05-31

申请号：PCT/EP2018/069475

申请日：2018-07-18

Applicant: THOMSON LICENSING

Inventor： ANDRIVON, Pierre ,  COLAITIS, Marie-Jean ,  TOUZE, David

IPC: H04N19/46 ,  H04N19/186 ,  G06T5/00

Abstract: The present embodiments relate to a method and apparatus comprising: - deriving chroma components (I) of a third image by correcting chroma components (II) of a second image according to a luma component of said second image and a reconstructed component obtained by applying a mapping function to said luma component (III) of said second image, said chroma components (II) of the second image being obtained by applying a conversion matrix to components (IV) of a first image; and - adapting coefficients of the conversion matrix which are relative to a chroma component of said third image independently of coefficients of the conversion matrix which are relative to another chroma component of said third image to ensure that there is no clipping on chroma components of the third image.

公开(公告)号：WO2017080927A1

公开(公告)日：2017-05-18

申请号：PCT/EP2016/076707

申请日：2016-11-04

Applicant: THOMSON LICENSING

Inventor： BORDES, Philippe ,  ANDRIVON, Pierre ,  FRANCOIS, Edouard

IPC: H04N21/434 ,  H04N21/81

CPC classification number: H04N21/4345 ,  H04N21/8193

Abstract: The present disclosure relates to a method and device for adapting a video content decoded from elementary streams to the characteristics of a display from at least one type of metadata giving information regarding said elementary streams. Such a method comprises: - obtaining (102) an additional information (HDR DESCR.) indicating the presence of one particular type of metadata; - determining if said video content decoded from elementary streams is displayable on said display (11) from said additional information (HDR DESCR.) and the characteristics of the display (EDID); and - if said video content decoded from elementary streams is determined as being displayable, selecting (105) a process from said additional information and the characteristics of the display and adapting (106) the video content according to the selected process.

Abstract translation: 本公开涉及用于使来自基本流的解码的视频内容适应来自给出关于所述基本流的信息的至少一种类型的元数据的显示器的特性的方法和设备。 这样的方法包括： - 获得（102）指示一个特定类型的元数据的存在的附加信息（HDR DESCR。）; - 确定从所述基本流解码的所述视频内容是否可以从所述附加信息（HDR DESCR。）和所述显示器（EDID）的特性显示在所述显示器（11）上; 以及 - 如果从基本流解码的所述视频内容被确定为可显示，则从所述附加信息和显示器的特性中选择（105）处理，并根据所选处理来适配（106）视频内容。

公开(公告)号：WO2017042079A1

公开(公告)日：2017-03-16

申请号：PCT/EP2016/070569

申请日：2016-09-01

Applicant: THOMSON LICENSING

Inventor： BORDES, Philippe ,  ANDRIVON, Pierre ,  SALMON, Philippe

IPC: H04N19/186 ,  H04N19/117 ,  H04N19/463 ,  H04N19/136 ,  H04N19/86

CPC classification number: H04N19/136 ,  H04N19/117 ,  H04N19/186 ,  H04N19/463 ,  H04N19/86

Abstract: Methods and devices for encoding and decoding a sequence of pictures, and corresponding computer program product and computer-readable medium. The disclosure relates to a method for decoding a video stream representative of a sequence of pictures, comprising: - obtaining (22) at least a first color component and a second color component of a picture unit, - decoding (23) at least one parameter of a post-processing of the second component, said at least one parameter being defined as a function of the first color component, - applying (24) said at least one post-processing to the second color component of the picture unit responsive to said at least one decoded parameter and to said first color component.

Abstract translation: 用于编码和解码一系列图片的方法和装置，以及相应的计算机程序产品和计算机可读介质。 本公开涉及一种用于对表示图像序列的视频流进行解码的方法，包括： - 获得（22）至少第一颜色分量和图像单元的第二颜色分量; - 解码（23）至少一个参数 所述至少一个参数被定义为所述第一颜色分量的函数; - 将所述至少一个后处理应用于所述图像单元的第二颜色分量，响应于所述第二颜色分量 至少一个解码参数和所述第一颜色分量。