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    • 4. 发明申请
    • METHODS AND DEVICES FOR FILTERING AND CODING A DIGITAL SIGNAL
    • 用于过滤和编码数字信号的方法和设备
    • US20090210469A1
    • 2009-08-20
    • US12389587
    • 2009-02-20
    • Felix HenryIsabelle Corouge
    • Felix HenryIsabelle Corouge
    • G06F17/10
    • H04N19/635H04N19/122H04N19/14H04N19/176H04N19/46
    • To filter a digital signal, in which, for each sample of the signal, a plurality of context functions take account of a predetermined number of other samples of the signal: the value of a context function from the plurality of context functions for each sample to be filtered is calculated; the signal is divided into a set of sub-signals corresponding respectively to the different values of the context functions; and, for each sub-signal: an optimal filter is determined according to a first criterion that depends on the values of the sub-signal; and the optimal filter is associated with the context function corresponding to the sub-signal.Application to the coding of a digital signal representing an image.
    • 为了过滤数字信号,其中对于信号的每个样本,多个上下文功能考虑到信号的预定数量的其他样本:从每个样本的多个上下文函数中的上下文函数的值到 被过滤计算; 该信号被分成一组分别对应于上下文功能的不同值的子信号; 并且对于每个子信号:根据取决于子信号的值的第一标准来确定最佳滤波器; 并且最优滤波器与对应于子信号的上下文功能相关联。 应用于代表图像的数字信号的编码。
    • 6. 发明授权
    • Digital image progressive transmission
    • 数字图像逐行传输
    • US5978517A
    • 1999-11-02
    • US877837
    • 1997-06-16
    • Felix HenryClaude Dierieck
    • Felix HenryClaude Dierieck
    • G06T9/00H04N7/28H04N7/34H04N7/46G06K9/30G06K9/38G06K9/46
    • G06T9/008H04N19/00H04N19/587H04N19/59H04N19/593H04N19/94
    • In order to progressively transmit a digital image (IM), a method for coding the image comprises the division (E1) of the image into vectors (V.sub.m,n), the selection (E2) of a code vector (VC.sub.d) associated with an index (A.sub.d) for each of the image vectors, and the replacement (E2) of the image vectors by the indices associated with the selected code vectors, in order to produce a plane of indices (PI) representing the image. The method comprises the steps of sub-sampling (E3) the plane of indices (PI) into sub-planes of indices (SPI.sub.1 to SPI.sub.F) respectively comprising indices selected from the plane of indices, and ordering (E4) the sub-planes of indices according to a predetermined order before transmitting them.
    • 为了逐步发送数字图像(IM),用于对图像进行编码的方法包括将图像划分为向量(Vm,n),将与图像相关联的代码矢量(VCd)的选择(E2) 用于每个图像向量的索引(Ad)和与所选择的代码向量相关联的索引的图像向量的替换(E2),以便产生表示该图像的索引平面(PI)。 该方法包括以下步骤:将索引平面(PI)分别采样(E3)成索引(SPI1至SPIF)的子平面,分别包括从索引平面中选择的索引,并排序(E4)子平面 在发送之前按照预定顺序进行索引。
    • 8. 发明授权
    • Methods and devices for coding and decoding, a telecommunication system and computer program implementing them
    • 用于编码和解码的方法和装置,实现它们的电信系统和计算机程序
    • US08369631B2
    • 2013-02-05
    • US12438044
    • 2007-09-18
    • Felix Henry
    • Felix Henry
    • G06K9/36
    • G06T9/20H04N19/117H04N19/635
    • The method of coding a multidimensional digital signal, said signal comprising a plurality of samples denoted “initial”, characterized in that it comprises: —a step of determining at least one secondary signal representing said multidimensional digital signal, each secondary signal having a lower number of samples than the number of samples of the multidimensional digital signal; —a step of determining filtering orientations on the basis of at least one secondary signal and—a step of determining at least one tertiary signal representing the signal to code, each tertiary signal having a lower number of samples than the number of initial samples, by implementing, on said multidimensional digital signal, filtering that is oriented on the basis of said filtering orientations.
    • 一种编码多维数字信号的方法,所述信号包括表示为初始的多个样本,其特征在于,其包括: - 确定表示所述多维数字信号的至少一个次信号的步骤,每个次信号具有较低数量的采样 多于多维数字信号的样本数; - 基于至少一个次级信号确定滤波取向的步骤和 - 确定表示所述信号至代码的至少一个第三信号的步骤,每个三级信号具有比初始样本数更少的样本数,通过 在所述多维数字信号上实现基于所述滤波取向定向的滤波。
    • 10. 发明申请
    • Methods and devices for coding and decoding, a telecommunication system and computer program implementing them
    • 用于编码和解码的方法和装置,实现它们的电信系统和计算机程序
    • US20100054613A1
    • 2010-03-04
    • US12438044
    • 2007-09-18
    • Felix Henry
    • Felix Henry
    • G06K9/46G06K9/36G06K9/40
    • G06T9/20H04N19/117H04N19/635
    • The method of coding a multidimensional digital signal, said signal comprising a plurality of samples denoted “initial”, characterized in that it comprises: —a step of determining at least one secondary signal representing said multidimensional digital signal, each secondary signal having a lower number of samples than the number of samples of the multidimensional digital signal; —a step of determining filtering orientations on the basis of at least one secondary signal and—a step of determining at least one tertiary signal representing the signal to code, each tertiary signal having a lower number of samples than the number of initial samples, by implementing, on said multidimensional digital signal, filtering that is oriented on the basis of said filtering orientations.
    • 一种编码多维数字信号的方法,所述信号包括表示为“初始”的多个样本,其特征在于,其包括: - 确定表示所述多维数字信号的至少一个次信号的步骤,每个次信号具有较低数字 的样本数量多于多维数字信号的样本数; - 基于至少一个次级信号确定滤波取向的步骤和 - 确定表示所述信号至代码的至少一个第三信号的步骤,每个三级信号具有比初始样本数更少的样本数,通过 在所述多维数字信号上实现基于所述滤波取向定向的滤波。