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1. 发明公开

EP3386198A1 METHOD AND DEVICE FOR PREDICTIVE PICTURE ENCODING AND DECODING 审中-公开
公开(公告)号：EP3386198A1
公开(公告)日：2018-10-10
申请号：EP17305411.5
申请日：2017-04-07
申请人： Thomson Licensing
发明人： FRANCOIS, Edouard , CHEVANCE, Christophe , HIRON, Franck
IPC分类号： H04N19/126 , H04N19/136 , H04N19/50 , H04N19/176 , H04N19/196 , H04N19/117 , H04N19/186 , H04N19/182
CPC分类号： H04N19/182 , H04N19/117 , H04N19/126 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/50 , H04N19/61
摘要： A method for encoding a block of a picture is disclosed. The method comprises for at least one sample of the block and for one current component:
- obtaining a prediction value ;
- determining a mapped residual value from a source value of the sample and from the prediction value responsive to a mapping function; and
- encoding the mapped residual value into a bitstream;
wherein the mapping function is derived to obtain at least one of a reduction of a bit cost of the bitstream for a given quality of reconstruction and an increase of quality of reconstruction for a given bit cost of the bitstream.

2. 发明授权

EP1908290B1 METHOD AND DEVICE FOR CODING A VIDEO CONTENT COMPRISING A SEQUENCE OF PICTURES AND A LOGO 有权转让
标题翻译：方法和装置用于编码视频内容图像的序列和LOGO
公开(公告)号：EP1908290B1
公开(公告)日：2015-06-10
申请号：EP06764020.1
申请日：2006-07-03
申请人： Thomson Licensing
发明人： BORDES, Philippe , GUILLOTEL, Philippe , HIRON, Franck
IPC分类号： H04N19/00 , H04N7/24
CPC分类号： H04N19/467 , H04N19/70 , H04N21/23614 , H04N21/4316 , H04N21/4348 , H04N21/8146 , H04N21/8451

3. 发明公开

EP1982525A1 DERIVATION DU MODE DE CODAGE OU BITRAME AU NIVEAU D'UNE PAIRE DE MACROBLOCS VIDEO 审中-公开
标题翻译： ABLEITUNG EINES EINZELBILD- / TEILBILDCODIERUNGSMODUSFÜREIN PAAR VONVIDEOMAKROBLÖCKEN
公开(公告)号：EP1982525A1
公开(公告)日：2008-10-22
申请号：EP07704281.0
申请日：2007-01-31
申请人： Thomson Licensing
发明人： THOREAU, Dominique , HIRON, Franck , OLIVIER, Yannick
IPC分类号： H04N7/26 , H04N7/46 , H04N7/50
CPC分类号： H04N19/577 , H04N19/112 , H04N19/139 , H04N19/16 , H04N19/176 , H04N19/513 , H04N19/61
摘要： The invention is characterised in that the frame/field mode is selected according to the following steps: determination of a vector movement (23) associated with the co-localised macroblock (22) of the macroblock to be encoded (21) and located in the subsequent reference image, the macroblock to be encoded being pre-defined for the selection in frame/field mode; scaling (24) of the vector movement (23) according to temporal distances between the reference images corresponding to the vector movement and between the current image, frame/field according to the pre-defined mode, and a reference image selected from the reference images corresponding to the movement vector; determination of the temporal macroblock (25) in the selected reference image, designated by the scaled (24) movement vector attributed to the macroblock to be encoded (21), and determination of the frame/field encoding mode thereof; and selection of the frame/field encoding mode of the temporal macroblock (25) for the encoding of the current macroblock (21). The applications relate to the compression of data using for example the norm MPEG 4 part 10.
摘要翻译：根据以下步骤选择场或帧模式的方法：确定与要编码的宏块的同位置宏块相关联的运动矢量，并在下一参考图像中查找要编码的预定义宏块，用于在场或帧模式中，根据预定义的模式和从以下的参考图像中选择的参考图像，根据与该运动矢量对应的参考图像与当前图像，场或帧之间的时间距离的运动矢量的缩放对应于该运动矢量的参考图像，由归因于要编码的宏块的运动矢量标度指定的所选择的参考图像中的时间宏块的确定及其场或帧编码模式，场或帧编码模式的选择用于当前宏块的编码的时间宏块。这些应用涉及使用例如MPEG4第10部分标准的数据压缩。

4. 发明公开

EP1908290A1 METHOD AND DEVICE FOR CODING A VIDEO CONTENT COMPRISING A SEQUENCE OF PICTURES AND A LOGO 有权转让
标题翻译：方法和装置用于编码视频内容图像的序列和LOGO
公开(公告)号：EP1908290A1
公开(公告)日：2008-04-09
申请号：EP06764020.1
申请日：2006-07-03
申请人： Thomson Licensing
发明人： BORDES, Philippe , GUILLOTEL, Philippe , HIRON, Franck
IPC分类号： H04N7/26 , H04N7/24
CPC分类号： H04N19/467 , H04N19/70 , H04N21/23614 , H04N21/4316 , H04N21/4348 , H04N21/8146 , H04N21/8451
摘要： The invention relates to a method for coding a video content comprising a sequence of pictures and at least one logo. It comprises the following steps: - coding the sequence of pictures by a first coding method, this step generating coded data relating to the sequence of pictures; - coding the logo by a second coding method and additional information relating to the logo, the additional information comprising at least information relating to the positioning of the logo in the pictures of the sequence, this step generating coded data relating to the logo; and - generating a single data stream comprising separately the coded data relating to the logo and the coded data relating to the sequence of pictures.

5. 发明公开

EP3518538A1 A METHOD AND A DEVICE FOR ENCODING AND DECODING A PICTURE PART 审中-公开
公开(公告)号：EP3518538A1
公开(公告)日：2019-07-31
申请号：EP18305080.6
申请日：2018-01-29
申请人： THOMSON LICENSING
发明人： CHEVANCE, Christophe , FRANCOIS, Edouard , HIRON, Franck
IPC分类号： H04N19/105 , H04N19/176 , H04N19/147 , H04N19/463 , H04N19/186 , H04N19/85 , H04N19/90
摘要： An encoding method is disclosed. A picture part is encoded (S120) in a bitstream and reconstructed comprising. Refinement data are determined (S130) such that:
- a rate distortion cost computed as a weighted sum of data coding cost and of a distortion between an original version of said picture part and said reconstructed picture part after refinement by said refinement data is decreased compared to a rate distortion cost computed as a weighted sum of data coding cost and of a distortion between said original version of said picture part and said reconstructed picture part without refinement in the case where no mapping applies before coding;
- a rate distortion cost computed as a weighted sum of data coding cost and of a distortion between an original version of said picture part and said reconstructed picture part after inverse mapping and refinement by said refinement data is decreased compared to a rate distortion cost computed as a weighted sum of data coding cost and of a distortion between said original version of said picture part and said reconstructed picture part after inverse mapping without refinement in the case where mapping applies before coding and said refinement is out of the decoding loop;
- a rate distortion cost computed as a weighted sum of data coding cost and of a distortion between a mapped original version of said picture part and said reconstructed picture part after refinement by said refinement data is decreased compared to a rate distortion cost computed as a weighted sum of data coding cost and of a distortion between said mapped original version of said picture part and said reconstructed picture part without refinement in the case where mapping applies before coding and said refinement is in the decoding loop.
Finally, the refinement data are encoded (S140) in the bitstream.

6. 发明公开

EP3425911A1 A METHOD AND A DEVICE FOR PICTURE ENCODING AND DECODING 审中-公开
公开(公告)号：EP3425911A1
公开(公告)日：2019-01-09
申请号：EP17305884.3
申请日：2017-07-06
申请人： Thomson Licensing
发明人： CHEVANCE, Christophe , HIRON, Franck , FRANCOIS, Edouard
IPC分类号： H04N19/126 , H04N19/186 , H04N19/157
摘要： A method for decoding a block of a picture represented in a current HDR/WCG format is disclosed. The method comprises receiving a bitstream representative of a coded block of picture, an indication representative of a default dQP table (index_dQP_table), an indication representative of a QP offset (slice_qp_delta); determining a quantization parameter responsive to the current format based on the default dQP table and the QP offset; decoding the coded block of a picture using the determined QP.
Corresponding encoding method, transmitting method, decoding device, encoding device and transmitting device are disclosed. Besides an embodiment relative to adapting generic codec parameters to any HDR/WCG format as done for dQP table is also disclosed.

7. 发明公开

EP2898682A1 METHOD AND APPARATUS FOR COMPENSATING ILLUMINATION VARIATIONS IN A SEQUENCE OF IMAGES 审中-公开
标题翻译：方法和设备补偿光变化的图像中的序列
公开(公告)号：EP2898682A1
公开(公告)日：2015-07-29
申请号：EP13770846.7
申请日：2013-08-27
申请人： Thomson Licensing
发明人： BORDES, Philippe , OLIVIER, Yannick , TOUZE, David , HIRON, Franck
IPC分类号： H04N19/00 , H04N19/50
CPC分类号： G06T5/008 , G06T5/40 , G06T2207/10016 , H04N19/117 , H04N19/139 , H04N19/14 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/597
摘要： In order to take into account the local illumination variations in a scene, the invention proposes a method of compensating illumination variations in which cumulative histograms are calculated for each block of an image (or view) and, in order to avoid a loss of the video coding efficiency, a cumulative histogram-based mapping function is automatically computed by a remote apparatus, such as a decoder, from only information available at that apparatus when decoding a current block of the sequence of images. The present invention relates also to a method and device of encoding and/or decoding a sequence of images which comprises means configured to implement the method of compensating illumination variations according to the invention.
摘要翻译：为了考虑到在场景中的局部照明的变化，本发明提出补偿哪累积直方图计算用于将图像（或视图）中的每个块和照明变化的方法中，为了避免视频的损失编码效率，累积基于直方图的映射功能被自动由远程设备，：例如解码器计算的，从仅在信息做装置当所述图像序列的当前块进行解码。因此，本发明涉及编码和/或解码的图像的序列，其包括装置，被配置为执行补偿gemäß发明照明变化的方法的方法和装置。

8. 发明授权

EP1579658B1 DEVICE AND PROCESS FOR ACQUIRING FILES BY ACCUMULATION OF POINTS 有权转让
标题翻译：设备和过程中获得的文件。通过积累点的
公开(公告)号：EP1579658B1
公开(公告)日：2006-05-31
申请号：EP03799556.0
申请日：2003-12-11
申请人： Thomson Licensing
发明人： MAETZ, Yves , HIRON, Franck
IPC分类号： H04L29/08 , H04N7/173 , G06Q30/00
CPC分类号： H04N21/4331 , G06Q30/02 , G06Q30/0208 , H04L29/06 , H04L67/06 , H04L69/329 , H04N5/76 , H04N7/17309 , H04N21/2543 , H04N21/25866 , H04N21/4622 , H04N21/4758 , H04N21/4782 , H04N21/6125 , H04N21/812 , H04N21/8456
摘要： The present invention relates to a device (20) and a process for acquiring files (F) by accumulation of points. The device is designed for a user of a receiver of data of a communication network (5, 6, 7), able to earn points by accomplishing at least one predefined operation, and to acquire at least one of the files by downloading via this communication network, when the aggregate number of points reaches a predetermined level associated with this file. The device comprises an automatic control module (21) for ordering downloading via this network to a storage space (10) accessible to this receiver, of portions (PiF) of this file, designed to order the downloading of each of these portions when the number of points earned by this user reaches a fraction of this predetermined level which corresponds to this portion.

9. 发明公开

EP1579658A1 DEVICE AND PROCESS FOR ACQUIRING FILES BY ACCUMULATION OF POINTS 有权转让
标题翻译：设备和过程中获得的文件。通过积累点的
公开(公告)号：EP1579658A1
公开(公告)日：2005-09-28
申请号：EP03799556.0
申请日：2003-12-11
申请人： Thomson Licensing S.A.
发明人： MAETZ, Yves , HIRON, Franck
IPC分类号： H04L29/08 , H04N7/173 , G06F17/60
CPC分类号： H04N21/4331 , G06Q30/02 , G06Q30/0208 , H04L29/06 , H04L67/06 , H04L69/329 , H04N5/76 , H04N7/17309 , H04N21/2543 , H04N21/25866 , H04N21/4622 , H04N21/4758 , H04N21/4782 , H04N21/6125 , H04N21/812 , H04N21/8456
摘要： The present invention relates to a device (20) and a process for acquiring files (F) by accumulation of points. The device is designed for a user of a receiver of data of a communication network (5, 6, 7), able to earn points by accomplishing at least one predefined operation, and to acquire at least one of the files by downloading via this communication network, when the aggregate number of points reaches a predetermined level associated with this file. The device comprises an automatic control module (21) for ordering downloading via this network to a storage space (10) accessible to this receiver, of portions (PiF) of this file, designed to order the downloading of each of these portions when the number of points earned by this user reaches a fraction of this predetermined level which corresponds to this portion.

10. 发明公开

EP3304902A1 METHOD AND APPARATUS FOR COLOR GAMUT SCALABILITY (CGS) VIDEO ENCODING WITH ARTIFACT DETECTION 审中-公开
标题翻译：具有人工检测的用于色域可扩展性（CGS）视频编码的方法和设备
公开(公告)号：EP3304902A1
公开(公告)日：2018-04-11
申请号：EP16730710.7
申请日：2016-06-03
申请人： Thomson Licensing
发明人： CAI, Kangying , HIRON, Franck , BORDES, Philippe
IPC分类号： H04N19/186 , H04N19/30 , H04N19/103 , H04N19/154
CPC分类号： H04N19/103 , H04N19/154 , H04N19/186 , H04N19/30 , H04N19/33 , H04N19/36
摘要： In scalable video coding, Enhancement Layer (EL) pictures are usually predicted from decoded Base Layer (BL) pictures. When the EL pictures and the BL pictures are represented with different color spaces, color gamuts, transforming the decoded BL pictures, for example, to Inter-Layer Reference (ILR) pictures in the color space/gamut of the EL may improve the prediction. To accurately predict from the BL, the color space of the BL pictures can be partitioned into multiple octants, wherein each octant is associated with a respective set of color mapping function (CMF) parameters. The partitioning of color space may cause color discontinuity artifacts in the ILR pictures. In one embodiment, we avoid using a block of an ILR picture as a prediction block for the EL pictures if we determine that a color discontinuity artifact may exist in the block of the ILR picture.

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