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公开(公告)号：US10007803B2
公开(公告)日：2018-06-26
申请号：US14058106
申请日：2013-10-18
Applicant: Infosys Limited
CPC classification number: G06F21/6227 , G06F7/725 , G06F7/726 , G06F16/152 , G06F16/245 , G06F2221/2107 , H04L9/3013 , H04L63/0428 , H04L63/1441 , H04L67/1097
Abstract: The present invention relates to a computer-implemented method, system and computer readable medium for searching over encrypted keywords in a database. The method includes the steps of generating at least one keyword, generating a plurality of different encrypted keywords corresponding to the keyword, storing the at least one encrypted keyword in the database, generating a plurality of different trapdoors for the keyword, verifying the plurality of different trapdoors with the plurality of different encrypted keywords corresponding to the keyword, and determining the keyword is found if the plurality of different trapdoors match with one the encrypted keyword corresponding to the keyword, otherwise determining the keyword is not found.
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2.发明授权System for determining an illegitimate three dimensional video and methods thereof 有权用于确定非法三维视频的系统及其方法公开(公告)号：US09202257B2
公开(公告)日：2015-12-01
申请号：US14494303
申请日：2014-09-23
Applicant: Infosys Limited
Inventor： Sachin Mehta , Rajarathnam Nallusamy
CPC classification number: G06T1/0021 , G06K9/00765 , G06T1/005 , G06T1/0085 , G06T2201/0052 , G06T2201/0064 , G06T2201/0081 , G06T2207/10012
Abstract: A method, non-transitory computer readable medium, and video analyzing computing device that generates a scene averaged frame value for each scene of an original video and a each scene of a resembling video. Each of a subset of the scenes of the resembling video is mapped to a corresponding scene of the original video based on a comparison of the scene averaged frame values. A singular value score is generated for each frame of each of the subset of scenes of the resembling video and each frame of the corresponding one of the scenes of the original video is generated. Matching one(s) of the one or more frames of each of the at least a subset of scenes of the resembling video is identified based on a comparison of at least a subset of the singular value scores. A first watermark is extracted from the identified matching frames.
Abstract translation: 一种方法，非暂时计算机可读介质和视频分析计算设备，其为原始视频和类似视频的每个场景的每个场景生成场景平均帧值。 基于场景平均帧值的比较，将类似视频的场景的子集中的每一个映射到原始视频的相应场景。 对类似视频的场景子集的每个帧的每帧生成奇异值分数，并且生成原始视频的相应一个场景的每个帧。 基于奇异值分数的至少一个子集的比较来识别类似视频的至少一个子集的每一个的一个或多个帧的匹配一个或多个帧。 从所识别的匹配帧中提取第一水印。
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3.发明授权Keyword ordered storage, search and retrieval on encrypted data for multiuser scenario 有权关键字订购存储，搜索和检索多用户场景的加密数据公开(公告)号：US09515994B2
公开(公告)日：2016-12-06
申请号：US14614241
申请日：2015-02-04
Applicant: Infosys Limited
CPC classification number: H04L63/0281 , H04L9/0825 , H04L9/30 , H04L63/0428 , H04L63/0435 , H04L63/0478 , H04L2209/76
Abstract: A method and system for a multi-user searchable encryption system over ordered keywords is disclosed. The system includes a key generation server which issues a primary key to a user terminal device and a secondary key to a proxy server. A trapdoor is sent by the user terminal and received by the proxy server. The trapdoor is encrypted at the proxy server. The proxy server receives cypher text from the user terminal and sends the cypher text to the database server. A search keyword inputted by the user at the user terminal is used to perform a lookup in encrypted data.
Abstract translation: 公开了一种用于多用户可搜索加密系统的有序关键词的方法和系统。 该系统包括向用户终端设备发出主键的密钥生成服务器和代理服务器的辅助密钥。 一个陷门由用户终端发送并由代理服务器接收。 陷门在代理服务器上进行加密。 代理服务器从用户终端接收密码文本，并将密码文本发送到数据库服务器。 由用户在用户终端输入的搜索关键字用于在加密数据中执行查找。
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4.发明授权Systems and methods for correcting geometric distortions in videos and images 有权用于校正视频和图像中的几何失真的系统和方法公开(公告)号：US09355438B2
公开(公告)日：2016-05-31
申请号：US14596986
申请日：2015-01-14
Applicant: Infosys Limited
Inventor： Sachin Mehta , Rajarathnam Nallusamy
CPC classification number: G06T5/006 , G06T1/0064 , G06T3/0006 , G06T5/50 , G06T2207/10016
Abstract: The geometric distortions of videos and images are corrected wherein a plurality of geometrically distorted frames are mapped with a plurality of original frames of the video content. Further, one or more features associated with the mapped frames are identified as insensitive to the one or more geometric distortions. One or more features of the mapped frames are further mapped with original frames based on a predefined similarity threshold and thereafter one or more geometric distortion parameters are determined. Furthermore, a frame level average distortion and a video level average distortion of each of the one or more geometric distortion parameters are determined, based on which the one or more geometric distortions of the video content are corrected.
Abstract translation: 校正视频和图像的几何失真，其中多个几何失真的帧与视频内容的多个原始帧映射。 此外，与映射的帧相关联的一个或多个特征被识别为对一个或多个几何失真不敏感。 基于预定义的相似性阈值，映射的帧的一个或多个特征进一步与原始帧进行映射，此后确定一个或多个几何失真参数。 此外，确定一个或多个几何失真参数中的每一个的帧级平均失真和视频电平平均失真，基于此校正视频内容的一个或多个几何失真。
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5.发明申请METHODS FOR EMBEDDING AND EXTRACTING A WATERMARK IN A TEXT DOCUMENT AND DEVICES THEREOF 审中-公开在文本文件中嵌入和提取水印的方法及其设备公开(公告)号：US20150228045A1
公开(公告)日：2015-08-13
申请号：US14493782
申请日：2014-09-23
Applicant: Infosys Limited
Inventor： Sachin Mehta , Rajarathnam Nallusamy
CPC classification number: G06T1/0064 , G06T1/0021 , G06T2201/0061 , G06T2201/0062 , G06T2210/22 , H04N1/32229 , H04N1/3232 , H04N1/32352 , H04N2201/3236
Abstract: Method, apparatus and non-transitory computer readable medium for embedding and extracting a watermark in a text document using digital watermarking processes is disclosed. When the text document is watermarked, the following steps are performed. The pages of the text document are transformed into corresponding images. Then, the margins on each of the images are detected and cropped to generate the cropped images. The cropped images are segmented into blocks among which some blocks are selected based on content of each block. The watermark is embedded in the selected blocks using a digital watermarking process. When the watermark from the watermarked text document is extracted, the watermark-embedding process is referred to determine the block information, for selecting each block of a watermarked text document, from where the watermark needs to be extracted.
Abstract translation: 公开了一种使用数字水印处理在文本文档中嵌入和提取水印的方法，装置和非暂时计算机可读介质。 当文本文档加水印时，执行以下步骤。 文本文档的页面被转换成相应的图像。 然后，检测并裁剪每个图像上的边距以生成裁剪后的图像。 裁剪的图像被分割成块，其中根据每个块的内容选择一些块。 使用数字水印处理将水印嵌入在所选择的块中。 当从水印文本文档中提取水印时，参考水印嵌入处理来确定块信息，用于选择水印需要被提取的水印文本文档的每个块。
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Patent Agency Ranking
公开(公告)号：US20150086067A1
公开(公告)日：2015-03-26
申请号：US14491626
申请日：2014-09-19
Applicant: Infosys Limited
Inventor： Sachin Mehta , Rajarathnam Nallusamy
IPC: G06T1/00
CPC classification number: G06T1/0085 , G06T1/0071 , G06T2201/0081
Abstract: A method, device and non-transitory computer readable medium for scene based video watermarking. Methods are disclosed to detect the scenes inside the video. Disclosed devices and methods are capable of scene change detection for both, gradual and abrupt scenes. Methods are also disclosed to group logical scenes in a video. The disclosed methods are aided with methods to reduce the computational time taken for scene change detection. Watermarks are created and segmented using a plurality of unique identifiers to limit any unauthorized use of the video.
Abstract translation: 一种用于基于场景的视频水印的方法，设备和非暂时计算机可读介质。 公开了用于检测视频内的场景的方法。 公开的设备和方法能够对于逐渐和突然的场景进行场景变化检测。 还公开了对视频中的逻辑场景进行分组的方法。 所公开的方法有助于减少场景变化检测所花费的计算时间的方法。 使用多个唯一标识符创建和分段水印，以限制视频的任何未经授权的使用。
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7.发明申请SYSTEM FOR DETERMINING AN ILLEGITIMATE THREE DIMENSIONAL VIDEO AND METHODS THEREOF 有权用于确定非正常三维视频的系统及其方法公开(公告)号：US20150170312A1
公开(公告)日：2015-06-18
申请号：US14494303
申请日：2014-09-23
Applicant: Infosys Limited
Inventor： Sachin Mehta , Rajarathnam Nallusamy
IPC: G06T1/00
CPC classification number: G06T1/0021 , G06K9/00765 , G06T1/005 , G06T1/0085 , G06T2201/0052 , G06T2201/0064 , G06T2201/0081 , G06T2207/10012
Abstract: A method, non-transitory computer readable medium, and video analyzing computing device that generates a scene averaged frame value for each scene of an original video and a each scene of a resembling video. Each of a subset of the scenes of the resembling video is mapped to a corresponding scene of the original video based on a comparison of the scene averaged frame values. A singular value score is generated for each frame of each of the subset of scenes of the resembling video and each frame of the corresponding one of the scenes of the original video is generated. Matching one(s) of the one or more frames of each of the at least a subset of scenes of the resembling video is identified based on a comparison of at least a subset of the singular value scores. A first watermark is extracted from the identified matching frames.
Abstract translation: 一种方法，非暂时计算机可读介质和视频分析计算设备，其为原始视频和类似视频的每个场景的每个场景生成场景平均帧值。 基于场景平均帧值的比较，将类似视频的场景的子集中的每一个映射到原始视频的相应场景。 对类似视频的场景子集的每个帧的每帧生成奇异值分数，并且生成原始视频的相应一个场景的每个帧。 基于奇异值分数的至少一个子集的比较来识别类似视频的至少一个子集的每一个的一个或多个帧的匹配一个或多个帧。 从所识别的匹配帧中提取第一水印。
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8.发明申请METHOD AND SYSTEM FOR SECURELY ACCESSING DIFFERENT SERVICES BASED ON SINGLE SIGN ON 有权基于单一标志安全访问不同服务的方法和系统公开(公告)号：US20140075202A1
公开(公告)日：2014-03-13
申请号：US13969404
申请日：2013-08-16
Applicant: Infosys Limited
IPC: G06F21/31
CPC classification number: G06F21/41 , G06F21/31 , G06F21/34 , H04L29/06768 , H04L63/0815
Abstract: An embodiment for securely accessing services of a service provider based on single sign on. The user device is authenticated by an authentication server if the computed hash of the first random number r is same as the received hash of the first random number r sent by a user device. Thereafter, the second random number y, the user id and an element Q are encrypted using a service provider password and send to the service provider. The user device computes a first discrete exponential function Z using the element Q and the second random number y and sends along with the user id to the service provider. The service provider computes a second discrete exponential function Z′ using the element Q and the second random number y received from the authentication server and provides the user device access to the services if Z is equal to Z′.
Abstract translation: 基于单一登录安全访问服务提供商的服务的实施例。 如果所计算的第一随机数r的散列与由用户设备发送的第一随机数r的接收散列相同，则认证服务器认证用户设备。 此后，使用服务提供商密码对第二随机数y，用户ID和元素Q进行加密并发送给服务提供商。 用户设备使用元素Q和第二随机数y来计算第一离散指数函数Z，并与用户ID一起发送到服务提供商。 服务提供商使用从认证服务器接收的元素Q和第二随机数y计算第二离散指数函数Z'，并且如果Z等于Z'，则提供用户设备对服务的访问。
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公开(公告)号：US09646358B2
公开(公告)日：2017-05-09
申请号：US14491626
申请日：2014-09-19
Applicant: Infosys Limited
Inventor： Sachin Mehta , Rajarathnam Nallusamy
CPC classification number: G06T1/0085 , G06T1/0071 , G06T2201/0081
Abstract: A method, device and non-transitory computer readable medium for scene based video watermarking. Methods are disclosed to detect the scenes inside the video. Disclosed devices and methods are capable of scene change detection for both, gradual and abrupt scenes. Methods are also disclosed to group logical scenes in a video. The disclosed methods are aided with methods to reduce the computational time taken for scene change detection. Watermarks are created and segmented using a plurality of unique identifiers to limit any unauthorized use of the video.
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10.发明授权Method and system for securely accessing different services based on single sign on 有权基于单点登录安全访问不同服务的方法和系统公开(公告)号：US09449167B2
公开(公告)日：2016-09-20
申请号：US13969404
申请日：2013-08-16
Applicant: Infosys Limited
CPC classification number: G06F21/41 , G06F21/31 , G06F21/34 , H04L29/06768 , H04L63/0815
Abstract: An embodiment for securely accessing services of a service provider based on single sign on. The user device is authenticated by an authentication server if the computed hash of the first random number r is same as the received hash of the first random number r sent by a user device. Thereafter, the second random number y, the user id and an element Q are encrypted using a service provider password and send to the service provider. The user device computes a first discrete exponential function Z using the element Q and the second random number y and sends along with the user id to the service provider. The service provider computes a second discrete exponential function Z′ using the element Q and the second random number y received from the authentication server and provides the user device access to the services if Z is equal to Z′.
Abstract translation: 基于单一登录安全访问服务提供商的服务的实施例。 如果所计算的第一随机数r的散列与由用户设备发送的第一随机数r的接收散列相同，则认证服务器认证用户设备。 此后，使用服务提供商密码对第二随机数y，用户ID和元素Q进行加密并发送给服务提供商。 用户设备使用元素Q和第二随机数y来计算第一离散指数函数Z，并与用户ID一起发送到服务提供商。 服务提供商使用从认证服务器接收的元素Q和第二随机数y计算第二离散指数函数Z'，并且如果Z等于Z'，则提供用户设备对服务的访问。
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