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    • 1. 发明申请
    • ENCODING AND DECODING WITH ELIMINATION OF ONE OR MORE PREDETERMINED PREDICTORS
    • 用一个或多个预测预测器消除编码和解码
    • WO2010043806A2
    • 2010-04-22
    • PCT/FR2009051937
    • 2009-10-12
    • FRANCE TELECOMLAROCHE GUILLAUMEJUNG JOEL
    • LAROCHE GUILLAUMEJUNG JOEL
    • H04N7/26H04N5/44H04N7/32H04N7/50
    • H04N19/136H04N19/109H04N19/11H04N19/124H04N19/176H04N19/523H04N19/61
    • 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 ith (Pi) and jth (Pj) predictors, of: calculating the difference between said jth and ith 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 jth predictor if the result of said quantification operation is less than or equal to said predetermined value.
    • 本发明涉及一种用于编码生成包括表示所述图像(IE)之一中的至少一个像素组(MB)的数据的数据流(F)的图像或图像序列的方法,所述方法包括以下步骤: 计算与所述像素组(MB)有关的预定数量的预测变量(P1,...,Pn),并根据预定的选择标准选择最优预测变量。 根据本发明,在计算和选择步骤之间,执行用计算出的预定数量去除至少一个预测器的步骤,该步骤对于至少两个第i(Pi)和第j(Pj)预测器包括:计算 对所述第j和第i个预测变量之间的差异,对所述计算的差异应用变换,对所施加的变换的结果执行量化操作,将所述量化操作的结果与预定值进行比较,如果所述量化的结果 操作小于或等于所述预定值。
    • 2. 发明申请
    • ADAPTIVE ENCODING AND DECODING
    • 自适应编码和解码
    • WO2007080520A2
    • 2007-07-19
    • PCT/IB2007000812
    • 2007-01-12
    • FRANCE TELECOMJUNG JOELLAROCHE GUILLAUMEBAILLAVOINE MARC
    • JUNG JOELLAROCHE GUILLAUMEBAILLAVOINE MARC
    • H04N19/517H04N19/196H04N19/463H04N19/52
    • The invention relates to a method for transmitting part of an image, said method comprising, in an encoding phase: the analysis of an encoding context; the adaptation of a parameter of a group of prediction functions that can be used for the encoding; the formation of a first predicted descriptor by means of a selected prediction function; and the determination and transmission of a residue (e) between the predicted descriptor and a current descriptor. The inventive method also has a decoding phase comprising: the analysis of a decoding context; the adaptation of a parameter of a group of prediction functions that can be used for the encoding; the formation of a second predicted descriptor (P*)by means of a selected prediction function; and the combination of the second predicted descriptor and the received residue for providing a decoded version (V*) of the current descriptor.
    • 本发明涉及一种用于发送图像的一部分的方法,所述方法包括:在编码阶段:对编码上下文的分析; 适用于可用于编码的一组预测函数的参数; 通过选择的预测函数形成第一预测描述符; 以及在预测描述符和当前描述符之间的残差(e)的确定和传输。 本发明的方法还具有解码阶段,包括:解码上下文的分析; 适用于可用于编码的一组预测函数的参数; 通过选择的预测函数形成第二预测描述符(P *); 以及第二预测描述符和接收到的残差的组合,用于提供当前描述符的解码版本(V *)。
    • 4. 发明申请
    • IMAGE PREDICTION USING THE REPARTITIONING OF A REFERENCE CAUSAL AREA, AND ENCODING AND DECODING USING SUCH A PREDICTION
    • 使用参考原因区域的重新编码进行图像预测,以及使用这种预测进行编码和解码
    • WO2010072946A2
    • 2010-07-01
    • PCT/FR2009052560
    • 2009-12-16
    • FRANCE TELECOMLAROCHE GUILLAUMEJUNG JOEL
    • LAROCHE GUILLAUMEJUNG JOEL
    • H04N7/26H04N7/32H04N7/36H04N7/50
    • H04N19/537H04N19/51H04N19/52H04N19/61
    • 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.
    • 本发明涉及一种用于解码表示图像或图像序列的数据流(F)的方法,所述流(F)包括表示所述图像(IE)的至少一部分的数据,其中所述方法包括步骤 预测当前图像部分相对于已经根据所述区域的预定编码模式划分的参考因果图像(Cs; Ct)的分区移动向量(P1; P'1)。 相对于当前分区(P1; P'1),预测步骤包括以下步骤:再次将参考因果区域的至少一部分(MBra,MBrb,MBrc; MBnE-i)划分为多个 的参考分区; 确定(D4)分别与在新分割之后产生的参考分区(Pr4a,Pr16b,Pr13c; Pr'1)相关联的移动向量(MVM -MVr3; MVr'1) 从所述确定的运动矢量(MVr1-MVr3,MVr'1)确定(D5)预测运动矢量; 以及从所确定的预测运动矢量中预测(D6)所述当前分区的运动矢量。
    • 6. 发明申请
    • VIDEO CODING METHOD AND DEVICE
    • 视频编码方法和设备
    • WO2007003836A2
    • 2007-01-11
    • PCT/FR2006050568
    • 2006-06-19
    • FRANCE TELECOMJUNG JOELBAILLAVOINE MARCBOISSONADE PATRICK
    • JUNG JOELBAILLAVOINE MARCBOISSONADE PATRICK
    • H04N19/89
    • H04N21/23418H04N19/107H04N19/109H04N19/166H04N19/176H04N19/46H04N19/573H04N19/58H04N19/89H04N21/2343H04N21/6583
    • The invention concerns a video coding method which consists in: a) encoding successive images (F) of a video sequence to generate encoding parameters; b) including the encoding parameters in an output stream (F) to be transmitted to a station (B) comprising a decoder (2); c) receiving from said station return data on the restoration of the images of the video sequence by the decoder; d) analyzing the return data in order to: d1) identify among the restored images, if at least one image includes at least one part which has been lost at the level of the decoder, d2) identifying, among the successive encoded images between said restored image and a current image to be encoded, at least one image part which refers to said lost part identified at step d1); e) encoding said current image of the video sequence in accordance with an encoding mode which is based on the identification or non-identification of at least one lost part as performed at step d).
    • 本发明涉及一种视频编码方法,其包括:a)编码视频序列的连续图像(F)以产生编码参数; b)将所述编码参数包括在将被发送到包括解码器(2)的站(B)的输出流(F)中; c)从所述站接收恢复解码器对视频序列的图像的恢复数据; d)分析返回数据以便:d1)在恢复的图像中识别至少一个图像是否包括在解码器的级别上已经丢失的至少一个部分,d2)在所述连续的编码图像 还原的图像和要被编码的当前图像,至少一个图像部分参考在步骤d1)识别的所述丢失部分; e)根据如在步骤d)中执行的基于至少一个丢失部分的识别或未识别的编码模式来编码所述视频序列的所述当前图像。