公开(公告)号：US06718045B2

公开(公告)日：2004-04-06

申请号：US09756136

申请日：2001-01-09

申请人： Ioana Donescu ,  Eric Nguyen

发明人： Ioana Donescu ,  Eric Nguyen

IPC分类号： G06K900

CPC分类号： H04N1/32187 ,  G06T1/0028 ,  G06T2201/0052 ,  H04N1/3217 ,  H04N19/10 ,  H04N19/14 ,  H04N19/176 ,  H04N19/467 ,  H04N19/48 ,  H04N19/63 ,  H04N19/94 ,  H04N2201/3233 ,  H04N2201/327

摘要： A method of inserting a watermarking signal (w) in a set (X) of coefficients (Xi) representing a digital image (I), in which at least one subset of coefficients is modified by said watermarking signal (w), comprises, for each representative coefficient (Xi) to be modified, a step of determining a neighborhood (V(Xi)) of the representative coefficient (Xi) to be modified, in the image (I); a step of selecting a neighborhood (Vsimd) in a dictionary of neighborhoods representing coefficients representing the image (I), according to a predetermined criterion of similarity with the neighborhood (V(Xi)) of the representative coefficient (Xi) under consideration; and a step of modifying the representative coefficient (Xi) as a function of the watermarking signal (w) and a predetermined masking data item (M(Vsimd)) representing the masking effect on a watermarking signal, of the neighborhood (Vsimd) selected in the dictionary.

摘要翻译： 一种在表示数字图像（I）的系数（X）的集合（X）中插入水印信号（w）的方法，其中通过所述水印信号（w）修改系数的至少一个子集包括：对于 要修改的每个代表系数（Xi）;在图像（I）中确定要修改的代表系数（Xi）的邻域（V（Xi））的步骤; 根据与代表系数（Xi）的邻域（V（Xi））的相似度的预定标准，在代表表示图像（I）的系数的邻域的字典中选择邻域（Vsim ）的步骤， 考虑; 以及修改作为水印信号（w）的函数的代表系数（Xi）和表示邻域的水印信号的掩蔽效应的预定掩蔽数据项（M（Vsim d））的步骤（Vsim ）。

公开(公告)号：US07031491B1

公开(公告)日：2006-04-18

申请号：US09544159

申请日：2000-04-06

申请人： Ioana Donescu ,  Eric Nguyen ,  Patrice Onno

发明人： Ioana Donescu ,  Eric Nguyen ,  Patrice Onno

IPC分类号： G06K9/00

CPC分类号： G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0065 ,  H04N1/32149 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32192 ,  H04N1/32203 ,  H04N1/32229 ,  H04N2201/3233 ,  H04N2201/327

摘要： A method of determining a partition into distinct regions of a set of coefficients representative of at least a part of an image in order to insert a watermark comprises the following steps: generation (E501) of a centred pseudo-random sequence (w) equal in size to the cardinal number (N) of the said set of coefficients, formed from centred pseudo-random sub-sequences; modulation (E502) of the said set of coefficients by the said centred pseudo-random sequence (w) in order to insert the same information bit on the said set of coefficients; and checking (E504–E508), over each region, of a criterion of detectability of the information bit inserted by modulation. Use especially for determining an adaptative partition as a function of a criterion of detectability of an information bit inserted on each region.

摘要翻译： 为了插入水印，确定代表图像的至少一部分的一系列系数的不同区域的分区的方法包括以下步骤：中心伪随机序列（w）的生成（E 501）等于 大小与由所述中心伪随机子序列形成的所述系数集合的基数（N） 通过所述中心伪随机序列（w）对所述系数集合进行调制（E 502），以便在所述系数集合上插入相同的信息比特; 以及在每个区域上检查通过调制插入的信息比特的可检测性标准的（E 504 -E 508）。 特别用于根据插入在每个区域上的信息位的可检测性的标准来确定适应性分区。

公开(公告)号：US07058200B2

公开(公告)日：2006-06-06

申请号：US09971690

申请日：2001-10-09

申请人： Ioana Donescu ,  Hervé Le Floch ,  Eric Nguyen

发明人： Ioana Donescu ,  Hervé Le Floch ,  Eric Nguyen

IPC分类号： G06K9/00

CPC分类号： G06T1/0057 ,  G06T2201/0053 ,  G06T2201/0061 ,  G06T2201/0202 ,  H04N1/32149 ,  H04N1/32277 ,  H04N1/32352

摘要： A method for the prior monitoring of the detectability of a watermarking signal inserted by modulation in a set of coefficients representing for example a digital image. The method comprises the step of simulating a distortion on the set of modulated coefficients, the distortion corresponding to a given compression level of the set of coefficients before modulation, determined by optimisation of a ratio of transmission rate to distortion. The method further comprises the step of calculating a detectability test on the set of modulated coefficients after distortion, and a step of comparing the detectability test with a threshold detection value. The method is used notably for inserting a watermarking signal during the compression of a digital image.

摘要翻译： 一种用于在表示例如数字图像的一组系数中通过调制插入的水印信号的可检测性的先前监视的方法。 该方法包括以下步骤：通过优化传输速率与失真的比率来确定调制系数集合上的失真，该失真对应于调制之前的系数集合的给定压缩级别。 该方法还包括对失真后的调制系数集合进行可检测性测试的步骤，以及将可检测性测试与阈值检测值进行比较的步骤。 该方法特别用于在数字图像的压缩期间插入水印信号。

公开(公告)号：US06990213B2

公开(公告)日：2006-01-24

申请号：US10041576

申请日：2002-01-10

申请人： Ioana Donescu

发明人： Ioana Donescu

IPC分类号： G06K9/00

CPC分类号： G06T1/0064 ,  G06T2201/0052

摘要： The invention concerns a method of processing a set of coefficients representing a digital image (300) with a view to an insertion of at least one item of watermarking information in said image, this image being liable to undergo a set of geometric transformations and said coefficients being grouped together in regions, said method being characterized in that it includes a step (E220) of determining, amongst at least some of said regions, a set of so-called acceptable regions, adapted to receive said at least one item of watermarking information; and a step (E230) of sequencing, according to at least one predetermined criterion, at least one part of said set of acceptable regions, in an order which is invariant with respect to at least one of said geometric transformations.

摘要翻译： 本发明涉及一种处理表示数字图像（300）的系数集合的方法，以便在所述图像中插入至少一个水印信息项，该图像易于经历一组几何变换，并且所述系数 在区域中被分组在一起，所述方法的特征在于，其包括步骤（E 220），其在至少一些所述区域中确定一组所谓的可接受区域，其适于接收所述至少一个水印项目 信息; 以及根据至少一个预定标准，以相对于所述几何变换中的至少一个不变的顺序对所述一组可接受区域的至少一部分进行排序的步骤（E 230）。

公开(公告)号：US06674873B1

公开(公告)日：2004-01-06

申请号：US09417100

申请日：1999-10-13

申请人： Ioana Donescu ,  Eric Majani

发明人： Ioana Donescu ,  Eric Majani

IPC分类号： G06K900

CPC分类号： G06T1/0035 ,  G06T2201/0052 ,  H04N7/24 ,  H04N19/60 ,  H04N19/63 ,  H04N21/23892 ,  H04N21/8358

摘要： The invention concerns a method of inserting an additional information item in a set of digital data representing physical quantities, the data having been processed by transformation, quantization and entropic coding in order to be compressed, characterized in that it comprises the steps of extracting a subset of low-frequency coefficients, from the set of data, entropic decoding of the coefficients of the subset, modulation of the decoded coefficients by a signal representing the additional information item, so as to form quantized watermarked coefficients, entropic coding of the watermarked coefficients, and insertion of the watermarked encoded coefficients in place of the coefficients of the subset, in the set of data.

摘要翻译： 本发明涉及一种在表示物理量的一组数字数据中插入附加信息项的方法，该数据已经通过变换处理，量化和熵编码以被压缩，其特征在于，其包括以下步骤：提取子集 从数据集合中，对子集的系数进行熵解码，通过表示附加信息项的信号对解码系数进行调制，以形成量化水印系数，对水印系数进行熵编码， 以及在该组数据中插入经加水印的编码系数代替该子集的系数。

公开(公告)号：US07499546B2

公开(公告)日：2009-03-03

申请号：US10415500

申请日：2001-10-31

申请人： Ioana Donescu ,  Patrice Onno

发明人： Ioana Donescu ,  Patrice Onno

IPC分类号： H04N7/167

CPC分类号： H04N1/32101 ,  H04N1/32128 ,  H04N1/32154 ,  H04N1/3217 ,  H04N1/32277 ,  H04N2201/3233 ,  H04N2201/328

摘要： The invention concerns a method of inserting a suppementary information item in a set of data reprenting physical quantities, the data having been processed by the steps of, a) partitioning (E2) the set into subsets, b) entropic coding (E4) of each of the subsets, c) selecting (E8), for each of the subsets, a compression rate and distortion pair according to a global compression rate or a global distortion, d) writing, for each of the subsets, an index (Tij) representing the selected compression rate and distortion pair, in a file containing the coded subsets, characterised in that it also includes a step (E11) of modifying the selected compression rate and distortion pairs, according to the supplementary information (wm).

摘要翻译： 本发明涉及一种将重复信息项插入到一组重复物理量的数据中的方法，该数据已经通过以下步骤进行处理：a）将集合划分成（E2）子集，b）每个子集的熵编码（E4） 的子集，c）根据全局压缩率或全局失真，为每个子集选择（E8）压缩率和失真对，d）为每个子集写入表示（E8）的索引（Tij） 所选择的压缩率和失真对，在包含编码子集的文件中，其特征在于还包括根据补充信息（wm）修改所选压缩率和失真对的步骤（E11）。

公开(公告)号：US07457820B1

公开(公告)日：2008-11-25

申请号：US10833127

申请日：2004-04-28

申请人： Pascal Viger ,  Frederic Maze ,  Ioana Donescu ,  Eric Nassor

发明人： Pascal Viger ,  Frederic Maze ,  Ioana Donescu ,  Eric Nassor

IPC分类号： G06F7/00

CPC分类号： G06F17/30011 ,  H04L29/12047 ,  H04L61/15 ,  H04L67/104 ,  H04L67/1076 ,  H04L67/1095 ,  H04L69/329 ,  Y10S707/99939 ,  Y10S707/99944

摘要： In a method of controlling a document sharing support apparatus, there is received information representing the fact that a first computer is storing at least a low-resolution version of a document, and the low-resolution version of the document is acquired and stored. There is received a request for obtaining the document from a second computer, and the low-resolution version of the document in memory is made available to the second computer.

摘要翻译： 在控制文档共享支持装置的方法中，接收到表示第一计算机至少存储文档的低分辨率版本的事实的信息，并且获取并存储文档的低分辨率版本。 接收到从第二计算机获取文档的请求，并且存储器中的文档的低分辨率版本可用于第二计算机。

公开(公告)号：US07330560B2

公开(公告)日：2008-02-12

申请号：US10461416

申请日：2003-06-16

申请人： Ioana Donescu

发明人： Ioana Donescu

IPC分类号： G06K9/00 ,  H04L9/00

CPC分类号： H04N19/467 ,  G06T1/0064 ,  G06T2201/0051 ,  H04N1/32149 ,  H04N1/32187 ,  H04N1/32229

摘要： The invention concerns a method of inserting a message in an image, characterized in that it comprises the steps of: selecting a set of points in the image as a function of predetermined criteria, so as to form a coordinate system in the image, calculating (S21) an affine transformation between a predetermined coordinate system and the coordinate system formed in the image, generating (S24) a pseudo-random sequence for each symbol of the message to be inserted, in the predetermined coordinate system, projecting (E25) each pseudo-random sequence into the coordinate system formed in the image, by affine transformation, inserting (S27) each symbol of the message to be inserted, as a function of its respective projected pseudo-random sequence.

摘要翻译： 本发明涉及一种在图像中插入消息的方法，其特征在于包括以下步骤：根据预定标准选择图像中的一组点，以便在图像中形成坐标系，计算（ S 21）在预定坐标系和形成在图像中的坐标系之间的仿射变换，在预定坐标系中生成（S24）要插入的消息的每个符号的伪随机序列（E 25 ）每个伪随机序列转换成图像中形成的坐标系，通过仿射变换，将要插入的消息的每个符号插入（S27）作为其各自的投影伪随机序列的函数。

公开(公告)号：US08838742B2

公开(公告)日：2014-09-16

申请号：US10549158

申请日：2004-04-07

申请人： Fabrice Le Leannec ,  Ioana Donescu

发明人： Fabrice Le Leannec ,  Ioana Donescu

IPC分类号： G06F15/16

CPC分类号： H04N21/4331 ,  H04N21/643

摘要： This method of transmission of an animation in a digital image by a first server containing a descriptive file of the animation to a client, an animation being defined by a series of portions of a digital image according to a plurality of requests to be received from the client, comprises the steps of, at reception by the first server of a request from the client on the animation descriptive file, transmission (908) of the descriptive file to the client and to a second server. The second server is enabled to prepare (912) appropriate responses to a series of client requests deduced from the descriptive file and anticipating the plurality of requests to be received from the client.

摘要翻译： 由包含动画描述文件的第一服务器将数字图像中的动画发送到客户端的方法，动画由数字图像的一系列部分根据要从第一服务器接收的多个请求定义 客户端包括以下步骤：在由第一服务器接收到来自客户端的关于动画描述文件的请求时，描述文件向客户端和第二服务器发送（908）。 第二服务器被启用以准备（912）对从描述性文件推导的一系列客户端请求的适当响应，并预期将从客户端接收的多个请求。

公开(公告)号：US07734751B2

公开(公告)日：2010-06-08

申请号：US10781772

申请日：2004-02-20

申请人： Ioana Donescu ,  Pascal Viger ,  Frédéric Maze ,  Eric Nassor

发明人： Ioana Donescu ,  Pascal Viger ,  Frédéric Maze ,  Eric Nassor

IPC分类号： G06F15/173

CPC分类号： H04L63/104 ,  H04L67/104 ,  H04L67/1059 ,  H04L67/1076 ,  H04L69/329

摘要： A method of allocating at least one service by a first peer (E) to a second peer (D), the peers being linked by means of a computer communication network, the first and second peers belonging respectively to a first and second group of peers adapted to share data, comprises the following steps: evaluating (E63) a distance (d0) between the first peer (E) and the second peer (D); and selecting (E65) a service allocated by the first peer (E) according to the value (d0) of the distance.

摘要翻译： 一种通过第一对等体（E）向第二对等体（D）分配至少一个服务的方法，所述对等体借助于计算机通信网络链接，所述第一和第二对等体分别属于第一和第二组对等体 适于共享数据，包括以下步骤：评估（E63）第一对等端（E）与第二对等端（D）之间的距离（d0）; 以及根据所述距离的值（d0）来选择（E65）由所述第一对等体（E）分配的服务。