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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
    • US20120163479A1
    • 2012-06-28
    • US13394520
    • 2010-09-28
    • Christophe GisquetFélix Henry
    • Christophe GisquetFélix Henry
    • H04N7/26
    • H04N19/86H04N19/117H04N19/147H04N19/177H04N19/182H04N19/192H04N19/46
    • The method of filtering at least one group of at least one sample of a digital signal comprises a step of initializing current values of coefficients associated with each filter support, and, for at least two iterations, for each group of samples: for each sample, determining a filter support, filtering the samples in the group with this filter support and the current coefficients, for each filter support: obtaining, among the samples, a subgroup of samples corresponding to the filter support, and determining optimal values of the coefficients of the filter associated with said support according to a predetermined criterion, each iteration, as from the second, using as current values of coefficients the optimal values of coefficients of the previous iteration.
    • 对数字信号的至少一组至少一个采样进行滤波的方法包括初始化与每个滤波器支持相关联的系数的电流值的步骤,对于每组采样的至少两次迭代:对于每个采样, 确定滤波器支持,对于每个滤波器支持,利用该滤波器支持和当前系数对组中的采样进行滤波;在采样之间获取与滤波器支持相对应的子样本组,并确定滤波器支持的系数的最佳值 与根据预定标准与所述支持相关联的过滤器,每次迭代从第二次使用系数的当前值作为先前迭代的系数的最优值。
    • 5. 发明申请
    • METHOD AND DEVICE FOR CODING A MULTIDIMENSIONAL DIGITAL SIGNAL
    • 用于编码多维数字信号的方法和装置
    • US20120155749A1
    • 2012-06-21
    • US13394050
    • 2010-09-09
    • Félix HenryChristophe GisquetIsabelle Corouge
    • Félix HenryChristophe GisquetIsabelle Corouge
    • G06T9/00
    • H04N19/635H04N19/11H04N19/117H04N19/122H04N19/14H04N19/147H04N19/172H04N19/46H04N19/463
    • The present invention relates to a method and a device for coding a multidimensional signal (LL0) comprising samples to form a coded stream (FC), such as an image or a multimedia content. The method comprises: —filtering (E102) original samples by applying a first filter (F, G) to obtain filtered samples (L1)—coding (E172) said filtered samples to obtain coded filtered samples adapted to be decoded by a decoder into decoded filtered samples, —applying (E106) a lossy modification on the filtered samples to obtain modified samples (L1dec); —determining (E110, E130, E150) a geometric orientation of one second filter (F′, G′) to be applied by the decoder to a decoded filtered sample, the determining being based on the modified samples, the original samples and a predetermined criterion, and —providing (E174) said determined geometric orientations and said coded filtered samples to the decoder.
    • 本发明涉及一种用于对包含样本的多维信号(LL0)进​​行编码以形成诸如图像或多媒体内容的编码流(FC)的方法和装置。 该方法包括:通过应用第一滤波器(F,G)来过滤(E102)原始样本,以获得滤波样本(L1)编码(E172)所述经滤波的样本,以获得适于被解码器解码为解码的经编码的滤波样本 过滤样品,(E106)对过滤的样品进行有损修饰以获得修饰样品(L1dec); - 确定(E110,E130,E150)要由解码器施加到解码过滤样本的一秒滤波器(F',G')的几何取向,该确定基于修改的样本,原始样本和预定 标准和 - 提供(E174)所述确定的几何取向和所述经编码的滤波样本到解码器。
    • 6. 发明申请
    • METHOD AND DEVICE FOR PROCESSING A DIGITAL SIGNAL
    • 用于处理数字信号的方法和装置
    • US20120117133A1
    • 2012-05-10
    • US13322145
    • 2010-05-27
    • Félix HenryChristophe GisquetIsabelle Corouge
    • Félix HenryChristophe GisquetIsabelle Corouge
    • G06F17/17
    • H04N19/117H04N19/119H04N19/147H04N19/192H04N19/46H04N19/59
    • A method for processing a digital signal comprises receiving an output encoded signal (Sd,sc) obtained from an original digital signal (Si) having an initial spatial resolution and an initial bit rate, the output encoded signal having a bitrate lower than the initial bitrate, processing the output encoded signal to obtain a source signal (Sv) having the initial spatial resolution, and dividing (E303) samples of the source signal into at least two subsets of samples, the subsets corresponding respectively to different spatial grids that are arranged so that at least some samples of one subset are interleaved spatially with at least some samples of another said subset. Further, for each said subset, the method comprises determining (E305, E309, E311), for at least one sample of the subset, at least one filter amongst a set of predetermined filters according to a first predetermined criterion and finally inserting (E310) in a side information signal information representative of the filter(s) determined for the samples of the subset concerned. The method is suitable for encoding an original digital signal into an output encoded signal and a side information signal, the original digital signal having an initial resolution and an initial bitrate.
    • 一种用于处理数字信号的方法包括接收从具有初始空间分辨率和初始比特率的原始数字信号(Si)获得的输出编码信号(Sd,sc),所述输出编码信号的比特率低于初始比特率 处理输出编码信号以获得具有初始空间分辨率的源信号(Sv),并且将源信号的样本(E303)分割为至少两个样本子集,子集分别对应于排列为不同的空间网格 一个子集的至少一些样本与另一个所述子集的至少一些样本在空间上进行交织。 此外,对于每个所述子集,所述方法包括针对所述子集的至少一个样本确定(E305,E309,E311)根据第一预定标准的一组预定滤波器中的至少一个滤波器,并最终插入(E310) 在表示针对所涉及的子集的样本确定的滤波器的侧信息信号信息中。 该方法适用于将原始数字信号编码为输出编码信号和侧信息信号,原始数字信号具有初始分辨率和初始比特率。
    • 8. 发明授权
    • Device and method for transforming a digital signal
    • 用于转换数字信号的装置和方法
    • US06801666B1
    • 2004-10-05
    • US09512034
    • 2000-02-24
    • Félix HenryEric MajaniBertrand Berthelot
    • Félix HenryEric MajaniBertrand Berthelot
    • G06K936
    • H04N19/635H03M7/3053
    • A trellis filtering of a digital signal is disclosed. A method is provided of analysis filtering of an original digital signal including original samples representing physical quantities. Original samples of the digital signal are transformed by successive calculation steps into high and low frequency output samples. Any sample calculated at a given step is calculated by a predetermined function of original samples, and/or previously calculated samples, the samples being ordered in increasing rank. The signal is processed by successive series of samples, the calculations made on any series not taking into account the samples in a following series, and in that the any series terminates in a low-frequency sample.
    • 公开了一种数字信号的网格滤波。 提供了一种分析过滤原始数字信号的方法,包括表示物理量的原始样本。 数字信号的原始采样由连续的计算步骤转换成高频和低频输出采样。 通过原始样本的预定函数和/或先前计算的样本计算在给定步骤计算的任何样本,样本以递增秩排序。 该信号由连续的一系列样品进行处理,在任何系列中进行的计算不考虑以下系列中的样品,并且任何序列终止于低频样品。
    • 10. 发明授权
    • Methods and devices for coding and decoding digital signals, and systems using them
    • 用于对数字信号进行编码和解码的方法和装置,以及使用它们的系统
    • US06333705B1
    • 2001-12-25
    • US09545189
    • 2000-04-07
    • Isabelle AmonouFélix Henry
    • Isabelle AmonouFélix Henry
    • H03M746
    • H04N19/645H04N19/10H04N19/102H04N19/115H04N19/146H04N19/147H04N19/63
    • In order to code a digital signal, it is decomposed (20) into several subsignals; each subsignal is coded (38) by means of a coding technique taken from amongst M coding techniques Ci; and the stream of coded bits thus produced is entered (40) in a first part of a file intended to receive the coded digital signal. Then the application, successively to each coded subsignal, of each decoding technique Di associated with the coding technique Ci is simulated (48); and if and only if at least two different decoding techniques are acceptable, within the meaning of a predetermined likelihood criterion, for decoding the same coded subsignal, there is entered (52) in a second part of the file information making it possible to select, during decoding, the decoding technique associated with the coding technique used for coding this subsignal.
    • 为了对数字信号进行编码,将其分解成几个子信号(20) 每个子信号通过从M个编码技术Ci中获取的编码技术进行编码(38); 并且如此产生的编码比特流在用于接收编码数字信号的文件的第一部分中被输入(40)。 然后模拟与编码技术Ci相关联的每个解码技术Di的每个编码的子信号的应用(48); 并且当且仅当至少两种不同的解码技术是可接受的,在预定的可能性标准的含义内,为了解码相同的编码的子信号,在文件信息的第二部分中输入(52),使得可以选择, 在解码期间,与用于编码该子信号的编码技术相关联的解码技术。