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公开(公告)号：EP3632112A1
公开(公告)日：2020-04-08
申请号：EP18719779.3
申请日：2018-04-12
发明人： CAI, Kangying , HU, Wei , LASSERRE, S bastien
IPC分类号： H04N19/60 , H04N19/597
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公开(公告)号：EP3523965A1
公开(公告)日：2019-08-14
申请号：EP17761858.4
申请日：2017-08-31
发明人： LELEANNEC, Fabrice , RATH, Gagan , URBAN, Fabrice
IPC分类号： H04N19/13 , H04N19/91 , H04N19/157 , H04N19/18
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3.发明公开
公开(公告)号：EP3375194A1
公开(公告)日：2018-09-19
申请号：EP16793831.5
申请日：2016-11-04
申请人： Thomson Licensing
IPC分类号： H04N21/434 , H04N21/81
CPC分类号： H04N21/43 , H04N21/2353 , H04N21/4345 , H04N21/8193
摘要： 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 display-able 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.
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公开(公告)号：EP3251084A1
公开(公告)日：2017-12-06
申请号：EP16701608.8
申请日：2016-01-25
申请人： Thomson Licensing
IPC分类号： G06T5/00 , H04N19/186
CPC分类号： H04N19/186 , G09G2320/0271 , G09G2340/0428 , G09G2360/16 , H04N19/00 , H04N19/30 , H04N19/85
摘要： The present disclosure generally relates to a method and device of encoding a color picture having color components (Ec) comprising obtaining (11) a luminance component (L) and two chrominance components (C1, C2) from the color picture to be encoded. The method for encoding a color picture having color components comprising obtaining at least one chrominance component from the color picture to be encoded, the method further comprises: —determining a first factor based on the value of each pixel (i) of said luminance component; —obtaining at least one final chrominance component by scaling said at least one chrominance component by said first factor; and—encoding (13) said at least one final chrominance component.
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公开(公告)号：EP3172718A1
公开(公告)日：2017-05-31
申请号：EP15736852.3
申请日：2015-07-20
申请人： Thomson Licensing
IPC分类号： G06T9/00
CPC分类号： H04N19/186 , H04N19/117 , H04N19/124 , H04N19/136 , H04N19/36 , H04N19/44
摘要： The invention concerns scaling color difference components prior to encoding in order to extend the dynamic range. In one embodiment the color difference components are encoded prior to quantisation. In another embodiment the color difference components are encoded after quantisation. A decoder is configured to process data representative of the gain factor for a decoding process.
摘要翻译： 本发明涉及在编码之前缩放色差分量以便扩展动态范围。 在一个实施例中，色差分量在量化之前被编码。 在另一个实施例中，色差分量在量化后被编码。 解码器被配置为处理代表解码过程的增益因子的数据。
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6.发明公开METHOD AND DEVICE FOR ENCODING BOTH A HIGH-DYNAMIC RANGE FRAME AND AN IMPOSED LOW-DYNAMIC RANGE FRAME 审中-公开方法和设备的编码具有高动态范围和框架，AUFGEZWUNGENEM LOW RANGE框架
公开(公告)号：EP3107301A1
公开(公告)日：2016-12-21
申请号：EP16174088.1
申请日：2016-06-13
申请人： Thomson Licensing
CPC分类号： H04N19/186 , G09G3/3406 , G09G3/3426 , G09G2320/0646 , G09G2340/02 , G09G2350/00 , H04N19/172 , H04N19/50 , H04N19/503 , H04N19/98
摘要： The present disclosure generally relates to a method and device for encoding a frame. The method comprises:
- determining (101) a backlight frame from the frame;
- calculating (103) a residual frame responsive to the frame and the backlight frame; and
- predictive-encoding (110) the residual frame using a predictor of the residual frame calculated (109) from an imposed frame (IMF), said imposed frame being a low-dynamic version of the frame to be encoded;
The disclosure relates also a method and device for decoding at least one bitstream representing a frame.摘要翻译： 本发明基因的反弹涉及一种用于编码帧的方法和设备。 该方法包括： - 确定的开采（101）从所述帧中的背光源框架; - 计算（103）响应于所述框架和所述背光源框架的残余帧; 和 - 预测编码-（110）使用从在施加框架（IMF）计算的剩余帧的预测器（109）的剩余框架，所述施加帧是帧的低动态版本将被编码; 因此本发明涉及用于解码表示帧的至少一个比特流中的方法和装置。
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公开(公告)号：EP3085088A1
公开(公告)日：2016-10-26
申请号：EP14820807.7
申请日：2014-12-15
申请人： Thomson Licensing
IPC分类号： H04N19/124 , H04N19/154 , H04N19/164 , H04N19/33 , H04N19/36
摘要： The present invention generally relates to a method and device for encoding an image block by means of a block-based spatial-to-frequency transform. The method is characterized in that it comprises: - obtaining (100) a luminance component of the image block; - obtaining (101) a low-spatial-frequency version ( L lf ) of the luminance component of the image block; - quantifying (102) the low-spatial-frequency version ( L lf ) of the luminance component of the image block; - obtaining (103) a differential luminance component ( L r ) by calculating the difference between the luminance component (L) of the image block and a version L l �¢ f , Q �¢ L l �¢ f , Q ^ of the low-spatial-frequency version of the luminance component of the image block; - encoding (104) the quantified low-spatial-frequency version ( L lf,Q ) of the luminance component of the image block on at least one frequency coefficient (DC) of a set of frequency coefficients obtained from the block-based spatial-to-frequency transform for encoding the luminance component of the image block; and - encoding (105) the differential luminance component ( L r ) on the remaining frequency coefficients (AC) of said set of frequency coefficients. The invention relates also to a method and device for decoding a bitstream representing a luminance component and potentially at least one transformed colour component of an image block. Is further relates to a method and device for encoding an image and for decoding a bitstream representing an image.
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8.发明公开
公开(公告)号：EP3063940A1
公开(公告)日：2016-09-07
申请号：EP14792781.8
申请日：2014-10-22
申请人： Thomson Licensing
发明人： LE PENDU, Mikael , THOREAU, Dominique , GUILLEMOT, Christine , LELEANNEC, Fabrice , BOITATD, Ronan
IPC分类号： H04N19/503 , H04N19/124 , H04N19/177
CPC分类号： H04N19/503 , H04N19/124 , H04N19/177 , H04N19/182
摘要： The invention relates to a predictive coding/decoding method/device for a group of pictures belonging to a sequence of images, using at least one reference image belonging to a group of pictures other than the group of pictures to code, and converting the values of the pixels of the images of the group of pictures from a configurable transform such that these values are expressed in a target dynamic. The method is characterised in that it converts the values of the pixels of each reference image from the transform thus configured identically to the one used to convert the values of the pixels of the images of the group of pictures to code.
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公开(公告)号：EP2926557A1
公开(公告)日：2015-10-07
申请号：EP13802002.9
申请日：2013-11-26
申请人： Thomson Licensing
IPC分类号： H04N19/00
CPC分类号： H04N19/105 , H04N19/154 , H04N19/176 , H04N19/194 , H04N19/593 , H04N19/97
摘要： The present invention generally relates to a method for predicting a block of pixels from at least one patch comprising a block of pixels and a causal neighborhood around this block of pixels. The method comprises the following steps: determining a mapping of a causal neighborhood, around that block of pixels to be predicted, on the block of pixels to be predicted in order that the block of pixels of each patch is best predicted by mapping the neighbourhood of that patch on the block of pixels of that patch, and predicting the block of pixels from a prediction block computed by applying the determined mapping on the neighbourhood of the block of pixels to predict.
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10.发明公开METHOD AND ARRANGEMENT FOR ESTIMATING AT LEAST ONE CROSS-CHANNEL COLOUR MAPPING MODEL FROM AN SET OF TUPLES OF CORRESPONDING COLOURS RELATIVE TO AT LEAST TWO IMAGES 审中-公开方法和用于估计至少一个信道的边框颜色映射模型一TUPELSET这种颜色的至少两个图片条款
公开(公告)号：EP2920952A1
公开(公告)日：2015-09-23
申请号：EP13786242.1
申请日：2013-11-05
申请人： Thomson Licensing
CPC分类号： H04N13/15 , G01J2003/466 , H04N1/6058 , H04N1/6061 , H04N1/6063
摘要： The present invention generally relates to a method and arrangement for estimating said at least one cross-channel colour mapping model from a set of tuples of corresponding colours relative to at least two images. The method is characterised in that it uses processing means for:—selecting at least one intermediate tuple of corresponding colours from the set of tuples of corresponding colours by using at least one channel-wise colour mapping model, and—estimating said at least one cross-channel colour mapping model from said at least one intermediate selected tuple of corresponding colours.
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