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    Scalable encoding and decoding methods and corresponding devices with combined intraprediction and interlayer prediction
    1.
    发明公开
    Scalable encoding and decoding methods and corresponding devices with combined intraprediction and interlayer prediction 审中-公开
    Skalierbare Codierungs- und Decodierungsverfahren undzugehörigeVorrichtungen

    公开(公告)号：EP3026913A1

    公开(公告)日：2016-06-01

    申请号：EP14306911.0

    申请日：2014-11-27

    申请人： Thomson Licensing ,  INRIA - Institut National de Recherche en Informatique et en Automatique

    发明人： Le Pendu, Mikael ,  Turkan, Mehmet ,  Guillemot, Christine ,  Thoreau, Dominique ,  Racape, Fabien

    IPC分类号： H04N19/33

    CPC分类号： H04N19/33 ,  H04N19/52 ,  H04N19/59

    摘要： A scalable encoding method is disclosed that comprises for at least one block of an enhancement layer picture:
    - determining prediction information from at least a part of the enhancement layer picture spatially neighboring said at least one block of the enhancement layer picture and from a collocated part in a reconstructed base layer picture;
    - transforming, using the prediction information, a block of the reconstructed base layer picture collocated with said at least one block of the enhancement layer picture to form a prediction block; and
    - encoding a residual block obtained from said at least one block of the enhancement layer picture and from said prediction block.

    摘要翻译： 公开了一种可扩展编码方法，其包括对于增强层图像的至少一个块： - 从与增强层图像的所述至少一个块空间相邻的增强层图像的至少一部分以及来自分配部分 在重建的基层图像中; - 使用所述预测信息变换与所述增强层图像的所述至少一个块并置的所述重建的基本层图像的块，以形成预测块; 以及 - 从所述增强层图像的所述至少一个块和从所述预测块获得的残差块进行编码。

    Method and apparatus for dynamic range expansion of LDR video sequence
    3.
    发明公开
    Method and apparatus for dynamic range expansion of LDR video sequence 审中-公开
    Verfahren und Vorrichtung zur dynamischen Bereichserweiterung einer LDR-Videosequenz

    公开(公告)号：EP2958076A1

    公开(公告)日：2015-12-23

    申请号：EP15172968.8

    申请日：2015-06-19

    申请人： Thomson Licensing

    发明人： Boitard, Ronan ,  Thoreau, Dominique ,  Turkan, Mehmet ,  Bouatouch, Kadi ,  Cozot, Rémi

    IPC分类号： G06T5/00 ,  G06T5/50

    CPC分类号： H04N5/2355 ,  G06T5/009 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20208 ,  H04N5/23238

    摘要： A method and apparatus for dynamic range expansion of an LDR video sequence are suggested. The suggested method comprises the steps of: acquiring the LDR video sequence and at least one HDR panoramas concurrently, an image in said HDR encompassing a wider field of view than an image in said LDR; determining a dynamic range expansion operator based on the LDR video sequence and the HDR panoramas; and applying the determined dynamic range expansion operator on the LDR video sequence.

    摘要翻译： 提出了一种用于LDR视频序列的动态范围扩展的方法和装置。 所提出的方法包括以下步骤：同时获取LDR视频序列和至少一个HDR全景，所述HDR中的图像包含比所述LDR中的图像更宽的视场; 基于LDR视频序列和HDR全景确定动态范围扩展算子; 以及将所确定的动态范围扩展算子应用于LDR视频序列。

    Method and device for predicting an image block
    4.
    发明公开
    Method and device for predicting an image block 审中-公开
    Verfahren und Vorrichtung zur Vorhersage eines Bildblocks

    公开(公告)号：EP3054678A1

    公开(公告)日：2016-08-10

    申请号：EP15305164.4

    申请日：2015-02-04

    申请人： Thomson Licensing

    发明人： Zepeda, Joaquin ,  Turkan, Mehmet ,  Thoreau, Dominique

    IPC分类号： H04N19/105 ,  G06K9/62 ,  H04N19/176 ,  H04N19/593 ,  H04N19/136

    CPC分类号： H04N19/593 ,  G06K9/6202 ,  G06K9/6223 ,  H04N19/105 ,  H04N19/136 ,  H04N19/176

    摘要： A method, in an encoder or a decoder, for predicting a current block of an image is disclosed. The method comprises:
    - determining (10, 12) a weighted linear combination of templates belonging to a cell selected from a template space partitioned into cells so that the weighted linear combination approximates a template associated with said current block;
    - generating (14) a predictor for the current block from the determined weighted linear combination; and
    - adding (16) the current template and the templates of blocks that overlap the current block and the causal region of said current block in at least one cell of the template space.

    摘要翻译： 公开了一种在编码器或解码器中用于预测图像的当前块的方法。 该方法包括： - 确定（10,12）属于选自分割成小区的模板空间的小区的模板的加权线性组合，使得加权线性组合逼近与所述当前块相关联的模板; - 从确定的加权线性组合产生（14）当前块的预测器; 以及 - 在模板空间的至少一个单元中添加（16）当前模板和与当前块和当前块的因果区域重叠的块的模板。

    Differential coding of intra modes
    7.
    发明公开
    Differential coding of intra modes 审中-公开
    国际电影节

    公开(公告)号：EP3032830A1

    公开(公告)日：2016-06-15

    申请号：EP14306968.0

    申请日：2014-12-08

    申请人： Thomson Licensing

    发明人： Thoreau, Dominique ,  Alain, Martin ,  Le Pendu, Mikaël ,  Turkan, Mehmet

    IPC分类号： H04N19/11 ,  H04N19/14 ,  H04N19/176 ,  H04N19/463

    CPC分类号： H04N19/11 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/463 ,  H04N19/593

    摘要： A method of encoding a video image includes, for each one of blocks of the video image, calculating virtual gradient values in the block depending on neighboring gradient values computed in a causal neighborhood of the block and acquiring one prediction direction or non-directional intra prediction mode based on the virtual gradient values; and determining a coding mode by comparing different predictions for the block , acquiring a predicted block by applying the determined "coding mode", acquiring a residual error between the predicted block and the current block and encoding a difference between the determined coding mode and the prediction direction or non-directional intra prediction mode. The calculating includes, for each prediction direction, propagating the neighboung gradient values along the prediction direction to estimate the virtual gradient values in the block.

    摘要翻译： 编码视频图像的方法包括：对于视频图像的每个块，根据在块的因果关联中计算的相邻梯度值来计算块中的虚拟梯度值，并获取一个预测方向或非定向帧内预测 基于虚拟梯度值的模式; 以及通过比较块的不同预测来确定编码模式，通过应用所确定的“编码模式”获取预测块，获取预测块与当前块之间的残差，并对所确定的编码模式与预测之间的差进行编码 方向或非定向帧内预测模式。 对于每个预测方向，计算包括沿预测方向传播邻近梯度值以估计块中的虚拟梯度值。