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    METHODS FOR EMBEDDING AND EXTRACTING A WATERMARK IN A TEXT DOCUMENT AND DEVICES THEREOF
    3.
    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

    IPC: G06T1/00 ,  G06T3/40 ,  G06T7/00 ,  H04N1/32

    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。

    DYNAMIC DIGITAL WATERMARK
    6.
    发明申请
    DYNAMIC DIGITAL WATERMARK 有权
    动态数字水印

    公开(公告)号：US20150063625A1

    公开(公告)日：2015-03-05

    申请号：US14470499

    申请日：2014-08-27

    Applicant: Morpho Trust USA Inc.

    Inventor： Brian Martin

    IPC: G06T1/00 ,  H04N1/32

    CPC classification number: G06T1/0085 ,  G06T1/0071 ,  G06T2201/0062 ,  G06T2201/0065 ,  H04N1/32299 ,  H04N1/32304 ,  H04N1/32309 ,  H04N1/32325 ,  H04N1/32352

    Abstract: Some implementations may provide a computer-implemented method for validating a digital document, the method including: receiving, at a computing device, the digital document comprising at least two digital watermarks, the digital document issued by a central entity; retrieving a first digital watermark from the digital document, the first digital watermark visually presented at a first time point; retrieving a second digital watermark from the digital document, the second digital watermark visually presented at a second time point, the second digital watermark being different from the first digital watermark and the second time point being different from the first time point; and reading the digital document based on the retrieved first and second digital watermarks.

    Abstract translation: 一些实现可以提供用于验证数字文档的计算机实现的方法，所述方法包括：在计算设备处接收包括至少两个数字水印的数字文档，所述数字水印由中央实体发布; 从数字文档中检索第一数字水印，在第一时间点视觉呈现第一数字水印; 从所述数字文档中检索第二数字水印，所述第二数字水印在第二时间点可视地呈现，所述第二数字水印不同于所述第一数字水印，所述第二时间点与所述第一时间点不同; 以及基于检索到的第一和第二数字水印读取数字文档。

    AUDIBLE DOCUMENT IDENTIFICATION FOR VISUALLY IMPAIRED PEOPLE
    7.
    发明申请
    AUDIBLE DOCUMENT IDENTIFICATION FOR VISUALLY IMPAIRED PEOPLE 审中-公开
    视觉受害人士的文件资料识别

    公开(公告)号：US20150036872A1

    公开(公告)日：2015-02-05

    申请号：US14380443

    申请日：2013-02-07

    Applicant: SICPA HOLDING SA

    Inventor： Edgar Mueller

    IPC: G10L21/12 ,  B42D25/30 ,  G06K9/20 ,  G06T1/00 ,  G06K9/00

    CPC classification number: G10L21/12 ,  B42D25/30 ,  G06K9/00463 ,  G06K9/2018 ,  G06T1/0085 ,  G06T2201/0052 ,  G06T2201/0062 ,  G06T2201/0065 ,  G07D7/08

    Abstract: Disclosed is a document or article carrying information for the audible authentication of said document or article, wherein the information is present in or on said document or article in the form of a frequency-versus-time spectral density function (spectrogram), the spectrogram being embodied using document security means. Disclosed are further a method for producing said document or article; a reader device for displaying audible authentication information from said document or article, a method for authenticating said document or article and the use of a spectrogram for document authentication purposes.

    Abstract translation: 公开了一种携带用于所述文件或物品的可听认证的信息的文件或物品，其中所述信息以频率对时间谱密度函数（频谱图）的形式存在于所述文档或物品中或之上，所述频谱图为 体现使用文件安全手段。 还公开了一种用于生产所述文件或制品的方法; 用于从所述文档或文章显示可听认证信息的读取器设备，用于认证所述文档或文章的方法以及用于文档认证目的的频谱图的使用。

    Method for embedding messages into structure shapes
    8.
    发明授权
    Method for embedding messages into structure shapes 失效
    将消息嵌入结构形状的方法

    公开(公告)号：US08630444B2

    公开(公告)日：2014-01-14

    申请号：US12650289

    申请日：2009-12-30

    Applicant: Shantanu Rane ,  Samarjit Das ,  Anthony Vetro

    Inventor： Shantanu Rane ,  Samarjit Das ,  Anthony Vetro

    IPC: G06K9/00

    CPC classification number: G06K9/00416 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0062 ,  H04N1/3224

    Abstract: Embodiments of the invention disclose a system and a method for embedding a symbol in a glyph, comprising the steps of determining a set of landmarks representing an outline of the glyph; determining a data segment between two landmarks, wherein the data segment is suitable for embedding the symbol; modifying the data segment according to the symbol to produce a modified glyph such that the symbol is embedded in the modified glyph; and outputting the modified glyph.

    Abstract translation: 本发明的实施例公开了一种用于将符号嵌入字形中的系统和方法，包括以下步骤：确定表示字形轮廓的一组地标; 确定两个地标之间的数据段，其中所述数据段适于嵌入所述符号; 根据符号修改数据段以产生经修改的字形，使得符号嵌入在修改的字形中; 并输出修改的字形。

    Electronic watermark embedding device, electronic watermark detecting device, and programs therefor
    9.
    发明授权
    Electronic watermark embedding device, electronic watermark detecting device, and programs therefor 有权
    电子水印嵌入装置，电子水印检测装置及其程序

    公开(公告)号：US08588460B2

    公开(公告)日：2013-11-19

    申请号：US12659079

    申请日：2010-02-24

    Applicant: Jun Takahashi ,  Kensuke Kuraki ,  Taizo Anan

    Inventor： Jun Takahashi ,  Kensuke Kuraki ,  Taizo Anan

    IPC: G06K9/00 ,  G06K9/46 ,  G06K9/32 ,  G06K9/48

    CPC classification number: G06K9/48 ,  G06T1/0064 ,  G06T2201/0051 ,  G06T2201/0062 ,  H04N1/32203 ,  H04N1/32219 ,  H04N1/32235 ,  H04N1/32251 ,  H04N1/32261 ,  H04N1/32309

    Abstract: An electronic watermark embedding device that embeds a graphic pattern representing information in image data includes a signaling feature period changing unit configured to change a period of signaling feature of a graphic pattern, a graphic pattern embedding unit configured to embed the graphic pattern in the image data as a period of the signaling feature changed by the signaling feature period changing unit, and an embedment region detecting unit configured to detect an embedding position where the graphic pattern is embedded from a region of the image data other than a background, whereby the signaling feature period changing unit changes the period of the signaling feature while maintaining the signaling feature when the image data undergo image enlargement or reduction processing, and the graphic pattern embedding unit embeds the graphic pattern in the embedding position on the region of the image data other than the background.

    Abstract translation: 将表示信息的图形图形嵌入图像数据中的电子水印嵌入装置包括：信号特征周期改变单元，被配置为改变图形信号的信号特征的周期;图形模式嵌入单元，被配置为将图形图形嵌入图像数据中 作为由信令特征周期改变单元改变的信令特征的周期，以及嵌入区域检测单元，被配置为从除了背景之外的图像数据的区域中检测嵌入图形图案的嵌入位置，由此信令特征 当图像数据进行图像放大或缩小处理时，周期改变单元改变信令特征的周期，同时维持信令特征，并且图形模式嵌入单元将图形模式嵌入图像数据的除了 背景。

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