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41. 发明公开

EP1834489A1 PROCEDE ET DISPOSITIF DE CODAGE VIDEO 无效转让
标题翻译：视频广播电台
公开(公告)号：EP1834489A1
公开(公告)日：2007-09-19
申请号：EP05850636.1
申请日：2005-12-30
申请人： FRANCE TELECOM
发明人： BAILLAVOINE, Marc , JUNG, Joël , AMIEL, Jean-Christophe
IPC分类号： H04N7/26 , H04N7/50 , H04N7/36 , H04N7/64
CPC分类号： H04N19/58 , H04N19/105 , H04N19/107 , H04N19/142 , H04N19/166 , H04N19/172 , H04N19/177 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/89
摘要： Successive images (F) of a video image are encoded in order to generate parameters which are included in an output flow (Φ) that is to be transmitted to a decoder. The encoding of certain images is carried out in inter mode in relation to one or several previous images of the sequence, said previous images being temporarily stored in an image memory (51). Return information on the restoration of the images of the video sequence by the decoder are received by the encoder (1) and analyzed in order to evaluate the time lag of the return channel in relation to the transmission of the output flow. The encoder determines an amount of memory allocated to the image memory in the decoder according to the evaluated time lag and indicates said amount of memory to the decoder.
摘要翻译：视频图像的连续图像被编码以便产生包括在要发送到解码器的输出流中的参数。某些图像的编码在帧间模式下相对于该序列的一个或多个先前图像进行，所述先前图像临时存储在图像存储器中。由解码器恢复视频序列的图像的返回信息由编码器接收并分析，以评估返回信道相对于输出流的传输的时滞。编码器根据评估的时滞确定解码器中分配给图像存储器的存储量，并指示解码器的所述存储量。

42. 发明公开

EP2377323A2 PRÉDICTION D'IMAGES PAR REPARTIONNEMENT D'UNE PORTION DE ZONE CAUSALE DE RÉFÉRENCE, CODAGE ET DECODAGE UTILISANT UNE TELLE PRÉDICTION 有权转让
标题翻译：图像预测参考，并且码，例如预测的严格的区分配
公开(公告)号：EP2377323A2
公开(公告)日：2011-10-19
申请号：EP09803870.6
申请日：2009-12-16
申请人： France Telecom
发明人： LAROCHE, Guillaume , JUNG, Joël
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/537 , H04N19/51 , H04N19/52 , H04N19/61
摘要： The invention relates to a method for decoding a data stream (F) representative of an image or an image sequence, said stream (F) including data representative of at least one portion of said images (IE), wherein said method comprises the step of predicting a partition movement vector (P1; P'1 ) of a current image portion relative to a reference causal image (Cs; Ct) that has been partitioned according to a predetermined encoding mode for said area. The prediction step comprises, relative to the current partition (P1; P'1 ), the steps of: again partitioning (D3) at least one portion (MBra, MBrb, MBrc; MBnE-i) of the reference causal area into a plurality of reference partitions; determining (D4) the movement vectors (MVM -MVr3; MVr'1) respectively associated with reference partitions (Pr4a, Pr16b, Pr13c; Pr'1 ) resulting after the new partitioning; determining (D5) a predictive movement vector from said determined movement vectors (MVr1-MVr3, MVr'1 ); and predicting (D6) the movement vector of said current partition from said determined predictive movement vector.

43. 发明公开

EP2351373A2 CODAGE ET DECODAGE AVEC ELIMINATION D'UN OU PLUSIEURS PREDICTEURS PREDETERMINES 有权转让
标题翻译：编码和解码ONE处置或多个预定预测因子
公开(公告)号：EP2351373A2
公开(公告)日：2011-08-03
申请号：EP09756008.0
申请日：2009-10-12
申请人： France Telecom
发明人： LAROCHE, Guillaume , JUNG, Joël
IPC分类号： H04N7/26 , H04N7/50 , H04N7/32 , H04N5/44
CPC分类号： H04N19/136 , H04N19/109 , H04N19/11 , H04N19/124 , H04N19/176 , H04N19/523 , H04N19/61
摘要： The invention relates to a method for encoding an image or a sequence of images generating a data flow (F) comprising data representing at least one group of pixels (MB) in one of said images (IE), said method including the steps of: calculating a predetermined number of predictors (P1,..., Pn) in relation to said group of pixels (MB), and selecting an optimal predictor in accordance with a predetermined selection criterion. According to the invention, between the calculation and selection steps, a step of eliminating at least one predictor with a calculated predetermined number is performed, which consists, for at least two i
th (Pi) and j
th (Pj) predictors, of: calculating the difference between said j
th and i
th predictors, applying a transform to said calculated difference, performing a quantification operation on the result of the applied transform, comparing the result of said quantification operation with a predetermined value, eliminating the j
th predictor if the result of said quantification operation is less than or equal to said predetermined value.

44. 发明公开

EP2160837A1 SÉLECTION DE FONCTIONS DE DÉCODAGE DISTRIBUÉE AU DÉCODEUR 有权转让
标题翻译： AUSWAHL VON AN DEN DECODIERER VERTEILTEN DECODIERUNGSFUNKTIONEN
公开(公告)号：EP2160837A1
公开(公告)日：2010-03-10
申请号：EP08806035.5
申请日：2008-06-19
申请人： FRANCE TELECOM
发明人： JUNG, Joël , LAROCHE, Guillaume
IPC分类号： H03M7/30
CPC分类号： H03M7/30 , H04N19/12
摘要： The invention relates to a method for transmitting at least one current image part, characterised in that: an encoding function is selected (10) from a finished set of encoding functions by applying (14) at least one first type of chosen function, said first type of chosen function(s) using image data which has already been decoded; the current image part is encoded (20) by means of the selected encoding function; the encoded image part is transmitted (30) towards a decoder (6); and information describing the chosen function(s) of the first type is transmitted (34) towards the decoder. The invention also relates to the corresponding decoding method.
摘要翻译：本发明涉及一种发送至少一个当前图像部分的方法，其中该方法包括通过应用第一类型的所述选择功能或所述第一类型的功能来选择来自有限组编码功能的编码功能使用已经解码的图像数据的第一类型，使用所选择的编码功能对当前图像部分进行编码，将编码图像部分发送到解码器，并向所述解码器发送描述所述第一类型的选择功能或功能的信息。本发明还涉及相应的解码方法。

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