公开(公告)号：US20100146299A1

公开(公告)日：2010-06-10

申请号：US12608724

申请日：2009-10-29

申请人： Ashwin SWAMINATHAN ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash L. Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

发明人： Ashwin SWAMINATHAN ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash L. Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

IPC分类号： G06F17/30 ,  H04L9/00

CPC分类号： G06F16/24578 ,  G06F16/3335 ,  G06F16/48 ,  G06F16/951 ,  G06F21/6218 ,  G06F21/6227 ,  H04L9/008 ,  H04L9/3236 ,  H04L2209/60

摘要： A confidentiality preserving system and method for performing a rank-ordered search and retrieval of contents of a data collection. The system includes at least one computer system including a search and retrieval algorithm using term frequency and/or similar features for rank-ordering selective contents of the data collection, and enabling secure retrieval of the selective contents based on the rank-order. The search and retrieval algorithm includes a baseline algorithm, a partially server oriented algorithm, and/or a fully server oriented algorithm. The partially and/or fully server oriented algorithms use homomorphic and/or order preserving encryption for enabling search capability from a user other than an owner of the contents of the data collection. The confidentiality preserving method includes using term frequency for rank-ordering selective contents of the data collection, and retrieving the selective contents based on the rank-order.

摘要翻译： 一种用于执行数据收集的内容的秩序搜索和检索的机密性保存系统和方法。 该系统包括至少一个计算机系统，其包括使用术语频率和/或类似特征的搜索和检索算法，用于数据收集的排序选择性内容，并且能够基于秩顺序安全地检索选择性内容。 搜索和检索算法包括基线算法，部分面向服务器的算法和/或完全面向服务器的算法。 部分和/或完全面向服务器的算法使用同态和/或顺序保存加密来实现除数据收集内容的所有者之外的用户的搜索能力。 机密性保存方法包括使用术语频率对数据收集的排序选择性内容进行排序，并且基于秩次来检索选择性内容。

公开(公告)号：US20160154971A9

公开(公告)日：2016-06-02

申请号：US14104652

申请日：2013-12-12

申请人： Ashwin Swaminathan ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

发明人： Ashwin Swaminathan ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

IPC分类号： G06F21/62 ,  G06F17/30

CPC分类号： G06F17/3053 ,  G06F17/30038 ,  G06F17/30666 ,  G06F17/30864 ,  G06F21/6218 ,  G06F21/6227 ,  H04L9/008 ,  H04L9/3236 ,  H04L2209/60

摘要： A confidentiality preserving system and method for performing a rank-ordered search and retrieval of contents of a data collection. The system includes at least one computer system including a search and retrieval algorithm using term frequency and/or similar features for rank-ordering selective contents of the data collection, and enabling secure retrieval of the selective contents based on the rank-order. The search and retrieval algorithm includes a baseline algorithm, a partially server oriented algorithm, and/or a fully server oriented algorithm. The partially and/or fully server oriented algorithms use homomorphic and/or order preserving encryption for enabling search capability from a user other than an owner of the contents of the data collection. The confidentiality preserving method includes using term frequency for rank-ordering selective contents of the data collection, and retrieving the selective contents based on the rank-order.

公开(公告)号：US20150169889A1

公开(公告)日：2015-06-18

申请号：US14104652

申请日：2013-12-12

申请人： Ashwin Swaminathan ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

发明人： Ashwin Swaminathan ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

IPC分类号： G06F21/62 ,  G06F17/30

CPC分类号： G06F16/24578 ,  G06F16/3335 ,  G06F16/48 ,  G06F16/951 ,  G06F21/6218 ,  G06F21/6227 ,  H04L9/008 ,  H04L9/3236 ,  H04L2209/60

摘要： A confidentiality preserving system and method for performing a rank-ordered search and retrieval of contents of a data collection. The system includes at least one computer system including a search and retrieval algorithm using term frequency and/or similar features for rank-ordering selective contents of the data collection, and enabling secure retrieval of the selective contents based on the rank-order. The search and retrieval algorithm includes a baseline algorithm, a partially server oriented algorithm, and/or a fully server oriented algorithm. The partially and/or fully server oriented algorithms use homomorphic and/or order preserving encryption for enabling search capability from a user other than an owner of the contents of the data collection. The confidentiality preserving method includes using term frequency for rank-ordering selective contents of the data collection, and retrieving the selective contents based on the rank-order.

摘要翻译： 一种用于执行数据收集的内容的秩序搜索和检索的机密性保存系统和方法。 该系统包括至少一个计算机系统，其包括使用术语频率和/或类似特征的搜索和检索算法，用于数据收集的排序选择性内容，并且能够基于秩顺序安全地检索选择性内容。 搜索和检索算法包括基线算法，部分面向服务器的算法和/或完全面向服务器的算法。 部分和/或完全面向服务器的算法使用同态和/或顺序保存加密来实现除数据收集内容的所有者之外的用户的搜索能力。 机密性保存方法包括使用术语频率对数据收集的排序选择性内容进行排序，并且基于秩次来检索选择性内容。

公开(公告)号：US20170235736A1

公开(公告)日：2017-08-17

申请号：US15274605

申请日：2016-09-23

申请人： Ashwin Swaminathan ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

发明人： Ashwin Swaminathan ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

IPC分类号： G06F17/30 ,  H04L9/00 ,  H04L9/32 ,  G06F21/62

CPC分类号： G06F16/24578 ,  G06F16/3335 ,  G06F16/48 ,  G06F16/951 ,  G06F21/6218 ,  G06F21/6227 ,  H04L9/008 ,  H04L9/3236 ,  H04L2209/60

摘要： A confidentiality preserving system and method for performing a rank-ordered search and retrieval of contents of a data collection. The system includes at least one computer system including a search and retrieval algorithm using term frequency and/or similar features for rank-ordering selective contents of the data collection, and enabling secure retrieval of the selective contents based on the rank-order. The search and retrieval algorithm includes a baseline algorithm, a partially server oriented algorithm, and/or a fully server oriented algorithm. The partially and/or fully server oriented algorithms use homomorphic and/or order preserving encryption for enabling search capability from a user other than an owner of the contents of the data collection. The confidentiality preserving method includes using term frequency for rank-ordering selective contents of the data collection, and retrieving the selective contents based on the rank-order.

公开(公告)号：US07817817B2

公开(公告)日：2010-10-19

申请号：US11221727

申请日：2005-09-09

申请人： Min Wu ,  Hongmei Gou

发明人： Min Wu ,  Hongmei Gou

IPC分类号： G06K9/00

CPC分类号： G06T1/005 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0063 ,  G06T2201/0065

摘要： A method of concealing data in images imperceptibly alters curves therein, such as through adding a value representing the data to be hidden to each of a number of B-spline control points representing the original curve. The altered control points characterize the imperceptibly altered curve, which replaces the original curve in the image. The altered control points may be later extracted from the image and compared with the original control points to determine the hidden value. Prudent selection of the values altering the control points as well as an iterative alignment-minimization algorithm in the detection process provides protection against numerous techniques for preventing the hidden values from being recovered.

摘要翻译： 隐藏图像中的数据的方法不可察觉地改变其中的曲线，例如通过向表示原始曲线的多个B样条控制点中的每一个添加表示要隐藏的数据的值。 改变的控制点表征了不可察觉地改变的曲线，这取代了图像中的原始曲线。 可以稍后从图像中提取改变的控制点，并与原始控制点进行比较以确定隐藏值。 改变控制点的值的谨慎选择以及检测过程中的迭代对齐最小化算法提供了针对许多防止隐藏值被恢复的技术的保护。

公开(公告)号：US20060056695A1

公开(公告)日：2006-03-16

申请号：US11221727

申请日：2005-09-09

申请人： Min Wu ,  Hongmei Gou

发明人： Min Wu ,  Hongmei Gou

IPC分类号： G06K9/34

CPC分类号： G06T1/005 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0063 ,  G06T2201/0065

摘要： A method of concealing data in images imperceptibly alters curves therein, such as through adding a value representing the data to be hidden to each of a number of B-spline control points representing the original curve. The altered control points characterize the imperceptibly altered curve, which replaces the original curve in the image. The altered control points may be later extracted from the image and compared with the original control points to determine the hidden value. Prudent selection of the values altering the control points as well as an iterative alignment-minimization algorithm in the detection process provides protection against numerous techniques for preventing the hidden values from being recovered.

摘要翻译： 隐藏图像中的数据的方法不可察觉地改变其中的曲线，例如通过向表示原始曲线的多个B样条控制点中的每一个添加表示要隐藏的数据的值。 改变的控制点表征了不可察觉地改变的曲线，这取代了图像中的原始曲线。 可以稍后从图像中提取改变的控制点，并与原始控制点进行比较以确定隐藏值。 改变控制点的值的谨慎选择以及检测过程中的迭代对齐最小化算法提供了针对许多防止隐藏值被恢复的技术的保护。

公开(公告)号：US20070143158A1

公开(公告)日：2007-06-21

申请号：US11303842

申请日：2005-12-15

申请人： Robert Cordery ,  Bertrand Haas ,  Stephen Decker ,  Hongmei Gou

发明人： Robert Cordery ,  Bertrand Haas ,  Stephen Decker ,  Hongmei Gou

IPC分类号： G06F9/44 ,  G06F17/50

CPC分类号： G06K9/348 ,  G06K2209/01 ,  G07D7/206

摘要： A method for detecting possible fraud in a document includes receiving an electronic image of the document and extracting data from the image that includes a plurality of printed characters. Next, one or more properties of the characters are measured, the properties are compared to at least one corresponding normative property to determine whether anomalies are present, and a determination is made as to whether to provide a fraud alert based on the anomalies, if any. Preferably, the method includes reporting the one or more anomalies, if any, to a classifier engine, wherein the classifier engine determines whether to provide the alert. Also, methods for determining character spacing ands/or acuity are provided.

摘要翻译： 用于检测文档中可能的欺诈的方法包括接收文档的电子图像并从包括多个打印字符的图像中提取数据。 接下来，测量字符的一个或多个属性，将属性与至少一个对应的规范属性进行比较以确定是否存在异常，并且确定是否基于异常提供欺诈警报（如果有的话） 。 优选地，该方法包括向分类器引擎报告一个或多个异常（如果有的话），其中分类器引擎确定是否提供警报。 此外，提供了用于确定字符间隔和/或敏锐度的方法。

公开(公告)号：US07587066B2

公开(公告)日：2009-09-08

申请号：US11303842

申请日：2005-12-15

申请人： Robert A. Cordery ,  Bertrand Haas ,  Stephen K Decker ,  Hongmei Gou

发明人： Robert A. Cordery ,  Bertrand Haas ,  Stephen K Decker ,  Hongmei Gou

IPC分类号： G06K9/00 ,  G06F21/00

CPC分类号： G06K9/348 ,  G06K2209/01 ,  G07D7/206

摘要： A method for detecting possible fraud in a document includes receiving an electronic image of the document and extracting data from the image that includes a plurality of printed characters. Next, one or more properties of the characters are measured, the properties are compared to at least one corresponding normative property to determine whether anomalies are present, and a determination is made as to whether to provide a fraud alert based on the anomalies, if any. Preferably, the method includes reporting the one or more anomalies, if any, to a classifier engine, wherein the classifier engine determines whether to provide the alert. Also, methods for determining character spacing ands/or acuity are provided.

摘要翻译： 用于检测文档中可能的欺诈的方法包括接收文档的电子图像并从包括多个打印字符的图像中提取数据。 接下来，测量字符的一个或多个属性，将属性与至少一个对应的规范属性进行比较以确定是否存在异常，并且确定是否基于异常提供欺诈警报（如果有的话） 。 优选地，该方法包括向分类器引擎报告一个或多个异常（如果有的话），其中分类器引擎确定是否提供警报。 此外，提供了用于确定字符间隔和/或敏锐度的方法。

公开(公告)号：US07438231B2

公开(公告)日：2008-10-21

申请号：US11543496

申请日：2006-10-05

申请人： Robert A. Cordery ,  Bertrand Haas ,  Hongmei Gou

发明人： Robert A. Cordery ,  Bertrand Haas ,  Hongmei Gou

IPC分类号： G06K7/10

CPC分类号： G07D7/0043

摘要： A method of printing a two-dimensional barcode by tilting the print head, which results in tilted barcode, and methods of detecting various types of attempts to forge the tilted barcode including: (i) a low level forgery that consists of a simple scan and reprint of the barcode, (ii) a low level forgery that consists of a reproduction (i.e., a read and regeneration) and subsequent printing of the barcode using a printer with a non-tilted print head by a fraudster that is not aware of the tilt in the original barcode, and (iii) a higher level forgery by a fraudster that is aware of the tilt in the original barcode and that digitally tilts/shears an image of the barcode and prints the digitally tilted/sheared image using a printer with a non-tilted print head in an effort to mimic the tilt present in the legitimate barcode.

摘要翻译： 通过倾斜打印头来打印二维条形码的方法，其导致倾斜的条形码，以及检测各种类型的伪造倾斜条形码的尝试的方法，包括：（i）低级伪造，其由简单的扫描和 重新打印条形码，（ii）由再现（即读取和再生）组成的低级伪造以及随后使用不知道该条形码的欺诈者使用具有非倾斜打印头的打印机打印条形码 倾斜原始条形码，以及（iii）知道原始条形码倾斜的欺诈者的更高级别的伪造，并且数字地倾斜/剪切条形码的图像，并使用带有打印机的打印机打印数字倾斜/剪切的图像 非倾斜打印头，以模拟合法条形码中存在的倾斜。

公开(公告)号：US07649658B2

公开(公告)日：2010-01-19

申请号：US11636802

申请日：2006-12-11

申请人： Robert A. Cordery ,  Bertrand Haas ,  Hongmei Gou

发明人： Robert A. Cordery ,  Bertrand Haas ,  Hongmei Gou

IPC分类号： H04N1/46 ,  H04N1/40

CPC分类号： H04N1/387

摘要： A method of reconstructing an original image from a printed and scanned image includes determining a plurality of transformation parameters including a rotation a of the scanning grid relative to the printing grid and a plurality of translation parameters which give a position of a node on the printing grid in a coordinate system of the scanning grid, generating a system of non-linear equations which represent the printed and scanned image as a function of: (i) the original image, (ii) a print/scan resolution ratio, and (iii) the transformation parameters, computing coefficients for the system using the resolution ratio, the transformation parameters and the given print model, generating a linear approximation of the system of non-linear equations, solving the linear approximation for an approximation of the original image, and creating a reconstructed original image from the approximation of the original image.

摘要翻译： 从打印和扫描图像重建原始图像的方法包括确定包括扫描网格相对于打印网格的旋转a的多个变换参数以及给出打印网格上的节点的位置的多个平移参数 在扫描网格的坐标系中，产生表示打印和扫描图像的非线性方程式的系统作为以下功能的函数：（i）原始图像，（ii）打印/扫描分辨率，和（iii） 变换参数，使用分辨率的系统的计算系数，变换参数和给定的打印模型，生成非线性方程组的线性近似，求解原始图像近似的线性近似，以及创建 来自原始图像近似的重建的原始图像。