公开(公告)号：EP3026912A1

公开(公告)日：2016-06-01

申请号：EP14306904.5

申请日：2014-11-27

申请人： Thomson Licensing

发明人： Olivier, Yannick ,  Touze, David ,  Serre, Catherine

IPC分类号： H04N19/30

CPC分类号： H04N19/122 ,  H04N19/184 ,  H04N19/30 ,  H04N19/50 ,  H04N19/98

摘要： The present disclosure generally relates to a method for encoding a HDR picture and a first LDR picture, the method comprising obtaining a second LDR picture (LDR2) responsive to a ratio between the HDR picture and a backlight picture (Bal) and encoding the first LDR picture and the second LDR picture (LDR2) by predicting one of the first and second LDR pictures by the other one of the first and second LDR pictures. The method is characterized in that it further comprises, before encoding, adjusting the first LDR picture responsive to the backlight picture.
The disclosure relates also to a method and device for decoding an LDR picture providing a lower dynamic range depiction of the picture content of an HDR picture.

摘要翻译： 本发明基因的反弹涉及一种用于编码HDR图像和第一LDR图像，所述方法包括：获得第二LDR图像（LDR2）响应于所述HDR图像和背光图像（BAL）之间的比值和编码所述第一LDR 画面和由通过所述第一和第二LDR图像中的另一个预测的第一和第二LDR图片中的一第二画面LDR（LDR2）。 中那样，它包括进一步地，在编码之前，调整响应于所述背光图像中的第一图像LDR所述方法的特征。 因此，该公开涉及一种用于在LDR图像解码提供HDR图像的图像内容的较低的动态范围描绘的方法和设备。

公开(公告)号：EP2887668A1

公开(公告)日：2015-06-24

申请号：EP13306787.6

申请日：2013-12-19

申请人： Thomson Licensing

发明人： Lasserre, Sebastien ,  Leleannec, Fabrice ,  Serre, Catherine

IPC分类号： H04N19/33 ,  H04N19/164 ,  H04N19/154 ,  H04N19/124 ,  H04N19/36

CPC分类号： H04N19/36 ,  H04N19/124 ,  H04N19/154 ,  H04N19/164 ,  H04N19/33

摘要： The present invention generally relates to a method and device for encoding an image. The method is characterized in that it comprises:
- obtaining (100) a luminance component of the image, said luminance component belonging to a perceptual space having a metric whose values are a function of the differences between the visual perceptions of two points of said perceptual space, and a perceptual threshold (Δ E ) defining an upper bound of the said metric and enabling a control of the visual losses in a displayed decoded version of the image;
- obtaining (101) a low-spatial-frequency version ( L lf ) of the luminance component of the image;
- encoding (108) the low-spatial-frequency version ( L lf ) of the luminance component of the image;
- obtaining (102) a first differential image ( Diff 1 ) which comprises a differential luminance component ( L r ) which is obtained by calculating the difference between the luminance component (L) of the image and a decoded version L l ⁢ f ^ of the low-spatial-frequency version ( L lf ) of the luminance component of the image; and
- encoding (105) the first differential image ( Diff 1 );
- the precision of the encoding of the first differential image ( Diff 1 ) depending on the perceptual threshold (Δ E ).
The invention relates also to a method and apparatus for decoding a bitstream representing an image.

摘要翻译： 本发明基因的反弹涉及用于对图像编码的方法和设备。 该方法的特征在于，这样做是包括： - 获取（100）所述图像的亮度分量，属于感知空间具有的度量，其值的。所述感知的两点的视觉感知之间的差的函数，所述亮度分量 空间，和感知阈值（“e）关于限定的上限的所述度量和使在所述图像的显示经解码版本的视觉损失的控制; - 图像的亮度分量的获得（101）的低空间频率版本（L LF）; - 图像的亮度分量的编码（108）所述低空间频率版本（L LF）; - 获得（102）的第一差分图像（DIFF 1），其包含通过计算^的图像的亮度分量（L）和一个解码版本L L¢F之间的差获得的差分亮度分量（L r）的所有 的图像的亮度分量的低空间频率版本（L LF）; 和 - 编码（105）所述第一差分图像（DIFF 1）; - 第一差分图像的编码的视知觉阈值（“E）的精度（DIFF 1）。 因此本发明涉及一种用于表示图像的比特流进行解码的方法和装置。

公开(公告)号：EP2107801B1

公开(公告)日：2010-09-29

申请号：EP09154924.6

申请日：2009-03-11

申请人： Thomson Licensing

发明人： Chevallier, Louis ,  Querre, Goulven ,  Serre, Catherine

IPC分类号： H04N5/44 ,  H04N5/76

CPC分类号： H04N5/44 ,  H04N5/76 ,  H04N21/4113 ,  H04N21/435 ,  H04N21/43637 ,  H04N21/4622 ,  H04N21/4821 ,  H04N21/6131 ,  H04N21/84

摘要： It is commonly observed that the information transmitted by a broadcast network is limited and that the Electronic Programme Guide does not sufficiently inform the user of the content of the broadcast programmes. The invention consists in using a local computer that first determines an available frequency channel in a frequency interval of the broadcast network. Then the computer searches in at least one other network for the additional information that is not transmitted by the broadcast network. Finally, the computer locally transmits the data found on the available frequency channel. Advantageously, the computer also transmits on the available channel the EPG data transmitted by the broadcast network, so that the computer broadcasts a veritable EPG information channel that is received by the receiver in order to extract the data for display in an EPG. The invention also consists in a transmitter of insertion messages to trigger the insertion of contents in a document at the level of the reproduction device, and a reception device enabling such insertions.

公开(公告)号：EP3096519A1

公开(公告)日：2016-11-23

申请号：EP15305737.7

申请日：2015-05-18

申请人： Thomson Licensing

发明人： Serre, Catherine ,  Lasserre, Sebastien ,  Le Leannec, Sebastien

IPC分类号： H04N19/50 ,  H04N19/61

CPC分类号： H04N19/186 ,  H04N19/176 ,  H04N19/182 ,  H04N19/34 ,  H04N19/50 ,  H04N19/61 ,  H04N19/98

摘要： The present disclosure generally relates to a method an device for encoding a picture block having a luminance component. The method is characterized in that the method comprises:
- obtaining (103, 301) a luminance residual block ( L r ) by subtracting a first representation ( L l , L lD ) of an average value of the luminance component from said luminance component;
- obtaining (102) a second representation (f(L l ) , f(L l ) D ) of the average value by applying a transfer function to the average value ( L l ) of the luminance component;
- encoding a luminance block ( L e ) obtained by adding (105, 302) together the luminance residual block ( L r ) and the second representation ( f ( L l ) ,f ( L l ) D ) of the average value.
The disclosure further relates to a method and device of decoding a picture block.

摘要翻译： 本公开总体上涉及一种用于对具有亮度分量的图片块进行编码的设备的方法。 该方法的特征在于该方法包括： - 通过从所述亮度分量中减去亮度分量的平均值的第一表示（L1，L1D），获得（103,301）亮度残差块（Lr） - 通过将传递函数应用于所述亮度分量的平均值（L1），获得（102）所述平均值的第二表示（f（L1），f（L1）D） - 编码通过将平均值的亮度残差块（Lr）和第二表示（f（L1），f（L1）D）相加（105,302）而获得的亮度块（Le）。 本公开还涉及解码图像块的方法和设备。

公开(公告)号：EP2107801A1

公开(公告)日：2009-10-07

申请号：EP09154924.6

申请日：2009-03-11

申请人： THOMSON LICENSING

发明人： Chevallier, Louis ,  Querre, Goulven ,  Serre, Catherine

IPC分类号： H04N5/44 ,  H04N5/76

CPC分类号： H04N5/44 ,  H04N5/76 ,  H04N21/4113 ,  H04N21/435 ,  H04N21/43637 ,  H04N21/4622 ,  H04N21/4821 ,  H04N21/6131 ,  H04N21/84

摘要： It is commonly observed that the information transmitted by a broadcast network is limited and that the Electronic Programme Guide does not sufficiently inform the user of the content of the broadcast programmes. The invention consists in using a local computer that first determines an available frequency channel in a frequency interval of the broadcast network. Then the computer searches in at least one other network for the additional information that is not transmitted by the broadcast network. Finally, the computer locally transmits the data found on the available frequency channel. Advantageously, the computer also transmits on the available channel the EPG data transmitted by the broadcast network, so that the computer broadcasts a veritable EPG information channel that is received by the receiver in order to extract the data for display in an EPG.
The invention also consists in a transmitter of insertion messages to trigger the insertion of contents in a document at the level of the reproduction device, and a reception device enabling such insertions.

摘要翻译： 通常观察由广播网络提供的信息是否跨mitted是有限的，也做了电子节目指南没有充分告知广播节目的内容的用户。 在使用本地计算机发明确实besteht可用频率信道的第一确定性地雷在广播网络的频率间隔。 然后至少一个其他网络的其他信息在电脑的搜索行为并非反式由广播网络mitted。 最后，计算机本地发送关于可用的频率信道找到的数据。 有利的是，计算机，以便发送关于可用信道通过所述广播网络中的EPG数据反mitted，所以做了计算机广播真正EPG信息信道没有由接收器，以便在EPG以提取用于显示的数据接收。 因此，本发明中的广告信息的一个发送器besteht触发的内容插入文档中的在再现设备的水平，和接收装置能够搜索插入。