Digital signal huffman coding with division of frequency sub-bands
    1.
    发明授权
    Digital signal huffman coding with division of frequency sub-bands 有权
    数字信号huffman编码,分频频率子带

    公开(公告)号:US06215422B1

    公开(公告)日:2001-04-10

    申请号:US09129913

    申请日:1998-08-06

    IPC分类号: H03M734

    摘要: The invention proposes a digital signal coding method including a step of analysing (E1) the digital signal (IM) into a plurality of frequency sub-band signals distributed according to at least two different frequency bands, at least one first sub-band signal having a lower frequency and at least one second sub-band signal having a higher frequency, characterised in that it includes, for each second sub-band signal, the steps of: dividing (E4) the second sub-band signals into blocks (Bi,n), selecting (E9) blocks to be coded by setting to a predetermined value, according to a selection criterion, coding the blocks selected by setting to the predetermined value.

    摘要翻译: 本发明提出了一种数字信号编码方法,包括以下步骤:(E1)将数字信号(IM)分解为根据至少两个不同频带分配的多个频率子带信号,至少一个第一子带信号具有 具有较高频率的较低频率和至少一个第二子带信号,其特征在于,对于每个第二子带信号,其包括以下步骤:将所述第二子带信号划分成(B, n),根据选择标准,通过设置为预定值来选择(E9)要被编码的块,将通过设置选择的块编码为预定值。

    Methods and devices for processing data and notably for compressing and decompressing images
    2.
    发明授权
    Methods and devices for processing data and notably for compressing and decompressing images 失效
    用于处理数据的方法和设备,特别是用于压缩和解压缩图像的方法和设备

    公开(公告)号:US06498866B2

    公开(公告)日:2002-12-24

    申请号:US09138646

    申请日:1998-08-24

    IPC分类号: G06K936

    CPC分类号: H04N19/99 H04N19/98

    摘要: According to the invention, the method of primary processing of a first set of primary data (IM,f) representing physical quantities includes: a set division step (200A to 202) during which the first set of data is divided into sub-sets of first data, and for each first sub-set of data: a step (205 to 207) of “constructing” a global contractive mapping of the first type, for the said first sub-set of data, whose fixed point constitutes an approximation of all or part of this sub-set. The set of parameters (ai, b) thus determined constitutes a primary representation of the said first set of data.

    摘要翻译: 根据本发明,表示物理量的第一组主要数据(IM,f)的主要处理方法包括:设定分割步骤(200A至202),其中第一组数据被划分为子集 第一数据和每个第一子数据集合:对于所述第一数据子集,其“固定点”构成所有第一子集的近似值,“构造”第一类型的全局收缩映射的步骤(205至207) 或该子集的一部分。 由此确定的参数集合(ai,b)构成所述第一组数据的主要表示。

    Methods and devices for coding and decoding digital signals, and systems using them
    3.
    发明授权
    Methods and devices for coding and decoding digital signals, and systems using them 失效
    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

    公开(公告)号:US06631213B1

    公开(公告)日:2003-10-07

    申请号:US09539700

    申请日:2000-03-31

    IPC分类号: G06K936

    摘要: In order to code a digital signal, a simplified version of the digital signal is determined, containing only some of the information contained in the digital signal. The simplified version is coded by means of a predetermined single coding technique. This simplified version is subtracted from the digital signal, so as to obtain a residual signal. From each block of the simplified version, there is selected, for each corresponding block of the residual signal, a coding technique amongst a predetermined number M of coding techniques Ci, where i is an integer between 1 and M. Each block of the residual signal is coded by means of the previously selected coding technique.

    摘要翻译: 为了对数字信号进行编码,确定数字信号的简化版本,其中仅包含数字信号中包含的一些信息。 简化版本通过预定的单一编码技术进行编码。 从数字信号中减去该简化版本,以获得残留信号。 从简化版本的每个块中,为残留信号的每个相应块选择编码技术Ci中的预定数量M之间的编码技术,其中i是1和M之间的整数。残差信号的每个块 通过先前选择的编码技术进行编码。

    Methods and devices for coding and decoding digital signals, and systems using them
    4.
    发明授权
    Methods and devices for coding and decoding digital signals, and systems using them 失效
    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

    公开(公告)号:US06333705B1

    公开(公告)日:2001-12-25

    申请号:US09545189

    申请日:2000-04-07

    IPC分类号: H03M746

    摘要: 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.

    摘要翻译: 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。

    Navigation control in an image having zoomable areas
    5.
    发明授权
    Navigation control in an image having zoomable areas 失效
    具有可缩放区域的图像中的导航控制

    公开(公告)号:US07443403B2

    公开(公告)日:2008-10-28

    申请号:US10773320

    申请日:2004-02-09

    申请人: Félix Henry

    发明人: Félix Henry

    IPC分类号: G06T3/40

    CPC分类号: G06T3/40

    摘要: A method of creating a file describing a digital image comprises the steps of defining a zoomable area in the image, a zoomable area being defined by its characteristics of location in the image and for which additional data are available, writing the characteristics in a file, and writing in the file a management function for navigation in the image.

    摘要翻译: 一种创建描述数字图像的文件的方法包括以下步骤:定义图像中的可变焦区域,可缩放区域由图像中的位置特征定义,并且附加数据可用于其中,将特征写入文件, 并在文件中写入用于在图像中导航的管理功能。

    Device and method for transforming a digital signal
    6.
    发明授权
    Device and method for transforming a digital signal 有权
    用于转换数字信号的装置和方法

    公开(公告)号:US06801666B1

    公开(公告)日:2004-10-05

    申请号:US09512034

    申请日:2000-02-24

    IPC分类号: G06K936

    CPC分类号: H04N19/635 H03M7/3053

    摘要: 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.

    摘要翻译: 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。

    Methods and devices for filtering and coding a digital signal
    7.
    发明授权
    Methods and devices for filtering and coding a digital signal 有权
    滤波和编码数字信号的方法和装置

    公开(公告)号:US08588539B2

    公开(公告)日:2013-11-19

    申请号:US12389587

    申请日:2009-02-20

    IPC分类号: G06K9/36 G06K9/40 G06K9/46

    摘要: 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.

    摘要翻译: 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。

    Methods and devices for encoding a digital image signal and associated decoding methods and devices
    8.
    发明授权
    Methods and devices for encoding a digital image signal and associated decoding methods and devices 有权
    用于编码数字图像信号和相关联的解码方法和装置的方法和装置

    公开(公告)号:US07936938B2

    公开(公告)日:2011-05-03

    申请号:US11219733

    申请日:2005-09-07

    IPC分类号: G06K9/46

    摘要: A method of encoding a digital image signal comprising a plurality of samples. The method comprises the following steps, applied during the encoding of each sample with a view to its storage in a buffer. The level of occupancy of the buffer is determined, and the level of occupancy is compared with a predetermined threshold. An encoding mode is determined from among a plurality of encoding modes when the level of occupancy is above the predetermined threshold, and encoding the sample according to the determined encoding mode, and the sample is encoded according to a default encoding mode when the level of occupancy is below the predetermined threshold.

    摘要翻译: 一种对包含多个样本的数字图像信号进行编码的方法。 该方法包括以下步骤:在编码每个样本期间将其存储在缓冲器中。 确定缓冲器的占用水平,并将占用水平与预定阈值进行比较。 当占有率高于预定阈值时,从多个编码模式中确定编码模式,并根据所确定的编码模式对样本进行编码,并且当占用等级时根据默认编码模式编码样本 低于预定阈值。

    Decoding of a digital image encoded at a plurality of resolution levels
    9.
    发明授权
    Decoding of a digital image encoded at a plurality of resolution levels 有权
    对以多个分辨率级别编码的数字图像进行解码

    公开(公告)号:US07477790B2

    公开(公告)日:2009-01-13

    申请号:US10757487

    申请日:2004-01-15

    申请人: Félix Henry

    发明人: Félix Henry

    IPC分类号: G06K9/36

    摘要: A method of decoding an encoded digital image, the encoded data of the image comprising a plurality of predefined resolutions, comprises the steps of: selecting a resolution lower than the highest of the predefined resolutions, determining the predefined resolution immediately above the selected resolution, determining a quantity of data of the determined predefined resolution, as a function of the ratio between the selected resolution and the determined predefined resolution, decoding the image at the determined predefined resolution, as a function of the determined quantity of data, subsampling the decoded image, as a function of the ratio between the selected resolution and the determined predefined resolution.

    摘要翻译: 一种对编码数字图像进行解码的方法,包括多个预定分辨率的图像的编码数据包括以下步骤:选择低于预定分辨率最高的分辨率,确定紧接所选分辨率的预定分辨率,确定 作为所选择的分辨率与所确定的预定分辨率之间的比率的函数的所确定的预定分辨率的数据量,以所确定的预定分辨率解码所确定的数据量的函数,对解码图像进行二次采样, 作为所选分辨率与所确定的预定分辨率之间的比率的函数。

    Encoding of digital data with determination of sample path
    10.
    发明授权
    Encoding of digital data with determination of sample path 失效
    数字数据的编码与采样路径的确定

    公开(公告)号:US07460722B2

    公开(公告)日:2008-12-02

    申请号:US10340796

    申请日:2003-01-13

    申请人: Félix Henry

    发明人: Félix Henry

    IPC分类号: G06K9/36 G06K9/46

    摘要: A method of encoding digital samples of a set of data representing physical quantities, the encoding including the determination of a path among the samples of the set. The method includes measuring an encoding cost which depends on the path, and modifying the path, the steps of measuring and modifying being reiterated so as to determine a path which minimizes the encoding cost.

    摘要翻译: 一种对表示物理量的一组数据的数字样本进行编码的方法,所述编码包括所述集合的样本中的路径的确定。 该方法包括测量取决于路径的编码成本,并修改路径,重复测量和修改的步骤,以便确定最小化编码成本的路径。