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51. 发明公开

EP2529552A1 SPATIAL PREDICTION TECHNIQUE FOR VIDEO CODING 审中-公开
标题翻译：空间预测技术用于视频编码
公开(公告)号：EP2529552A1
公开(公告)日：2012-12-05
申请号：EP11700373.1
申请日：2011-01-19
申请人： Thomson Licensing
发明人： THOREAU, Dominique , MARTIN, Aurélie , FRANCOIS, Edouard , VIERON, Jérôme , BORDES, Philippe
IPC分类号： H04N7/26 , H04N7/32 , H04N7/50 , H04N7/34
CPC分类号： H04N19/593 , H04N19/105 , H04N19/176 , H04N19/192 , H04N19/48 , H04N19/50 , H04N19/52 , H04N19/61
摘要： The invention relates to a method for coding a block of pixels comprising the following steps: - determining (10), for each pixel of the current block, a prediction pixel by thresholding, with a current threshold value, of coefficients resulting from a transformation applied on a window covering at least the pixel of the current block and by inverse transformation applied to the thresholded coefficients, - extracting (12) from the current block a prediction block formed of prediction pixels to generate a residue block, and - coding (14) said residue block. According to the invention, the current threshold value is determined or coded from neighbouring reconstructed pixels of the current block.

52. 发明公开

EP2502420A1 METHOD FOR CODING AND METHOD FOR RECONSTRUCTION OF A BLOCK OF AN IMAGE 审中-公开
标题翻译：方法进行重构的图象数据块进行编码和方法
公开(公告)号：EP2502420A1
公开(公告)日：2012-09-26
申请号：EP10775823.7
申请日：2010-11-08
申请人： Thomson Licensing
发明人： BORDES, Philippe , THOREAU, Dominique , VIERON, Jérôme , FRANCOIS, Edouard
IPC分类号： H04N7/26 , H04N7/34 , H04N7/50
CPC分类号： H04N19/157 , H04N19/105 , H04N19/122 , H04N19/124 , H04N19/129 , H04N19/176 , H04N19/593 , H04N19/61
摘要： The invention relates to a method for coding a current block of an image comprising the following steps for: - determining (10), for the current block, current coding parameters (Pc), - determining (12), for at least one neighbouring block of the current block previously coded and reconstructed (Bv
rec ), a neighbouring residual block (Bv
res ) from current coding parameters (Pc), and - coding (14) the current block (Bc) with the current coding parameters (Pc) according to the neighbouring residual block (Bv
res ).

53. 发明公开

EP2491717A1 MOTION VECTOR PREDICTION AND REFINEMENT 审中-公开
标题翻译： VERFEINERUNG VON BEWEGUNGSVEKTOREN的VORHERSAGE
公开(公告)号：EP2491717A1
公开(公告)日：2012-08-29
申请号：EP10771395.0
申请日：2010-10-13
申请人： Thomson Licensing
发明人： FRANCOIS, Edouard , THOREAU, Dominique , VIERON, Jérôme , MARTIN, Aurélie
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/52 , H04N19/132 , H04N19/176 , H04N19/513 , H04N19/523 , H04N19/61
摘要： The invention relates to a method for coding a current block of a sequence of images comprising the following steps: - determining (20, 30) at least one candidate motion vector associated with a neighbouring block of said current block, - determining (24, 34) a prediction motion vector from the candidate motion vector, and - coding (26, 36) the current block from the prediction motion vector. Advantageously, the prediction motion vector is determined according to the following steps: - determining (22, 32), for the candidate motion vector, a corrective motion vector so as to minimise a distortion calculated between the neighbouring block successively coded and reconstructed and a prediction block motion compensated by the at least one candidate motion vector modified by the corrective motion vector, and - determining (24, 34) the prediction motion vector from the candidate motion vector modified by the corrective motion vector.
摘要翻译：公开了一种用于编码图像序列的当前块的方法。该方法包括：确定与所述当前块的相邻块相关联的至少一个候选运动矢量，从候选运动矢量确定预测运动矢量，以及从预测运动矢量对当前块进行编码。有利地，根据以下步骤来确定预测运动矢量：为候选运动矢量确定校正运动矢量，以便最小化在连续编码和重建的相邻块之间计算的失真和由at 由所述校正运动矢量修改的至少一个候选运动矢量，以及根据由所述校正运动矢量修改的所述候选运动矢量确定所述预测运动矢量。

54. 发明公开

EP2460355A2 METHOD FOR DECODING A STREAM OF CODED DATA REPRESENTATIVE OF A SEQUENCE OF IMAGES AND METHOD FOR CODING A SEQUENCE OF IMAGES 有权转让
标题翻译：伴有局部光照补偿与当地接触因子的暗示传递运动补偿
公开(公告)号：EP2460355A2
公开(公告)日：2012-06-06
申请号：EP10742453.3
申请日：2010-07-29
申请人： Thomson Licensing
发明人： THOREAU, Dominique , FRANCOIS, Edouard , VIERON, Jérôme , RACAPE, Fabien
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N19/105 , H04N19/137 , H04N19/176 , H04N19/46 , H04N19/503
摘要： The invention relates to a method for decoding a stream of coded data (F) representative of a sequence of images comprising the following steps for a current block: reconstructing (10) a residual block, determining (12) a prediction block, and reconstructing (14) the current block by merging the residual block and the prediction block weighted by a weighted prediction parameter. According to the invention, the weighted prediction parameter is determined as follows: calculating (2) the average of the prediction block (avr
pred ), reconstructing (4) a DC coefficient of the current block (IresDC), calculating (6) an average (avr
cr_dec ) of the current block from the average of the prediction block (avr
pred ) and the DC coefficient (IresDC), and calculating (8) the weighted prediction parameter being the ratio of the average of the current block and the average of the prediction block (avr
pred ). The invention also relates to a method for coding.

55. 发明公开

EP2449683A1 METHODS FOR ARITHMETIC CODING AND DECODING 审中-公开
标题翻译：程序算术编码和解码
公开(公告)号：EP2449683A1
公开(公告)日：2012-05-09
申请号：EP10725767.7
申请日：2010-06-22
申请人： Thomson Licensing
发明人： BORDES, Philippe , THOREAU, Dominique , VIERON, Jérôme , FRANCOIS, Edouard
IPC分类号： H03M7/40 , H04N7/26
CPC分类号： H03M7/4006 , H04N19/13 , H04N19/61 , H04N19/93
摘要： A method for arithmetic coding of symbols in a stream is described. The method comprises the following steps: coding a current symbol with a current probability model, and updating the current probability model according to the coding of the current symbol. selecting the current probability model in a set of at least two probability models according to a coding cost criterion, and coding an identifier of the selected probability model.

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