Background pattern image combining apparatus, background pattern image combining method, and computer-readable storage medium for computer program
    4.
    发明公开
    Background pattern image combining apparatus, background pattern image combining method, and computer-readable storage medium for computer program 审中-公开
    背景图像合成装置中,背景图案图像合成为计算机程序的方法和计算机可读存储介质

    公开(公告)号:EP2392466A1

    公开(公告)日:2011-12-07

    申请号:EP11167637.5

    申请日:2011-05-26

    摘要: A background pattern image combining apparatus for combining a background pattern image with an input image is provided. The background pattern image includes a plurality of first isolated points having a size that can be read by an image reader and a plurality of second isolated points having a size that cannot be read by the image reader. The background pattern image combining apparatus includes a detector that detects, in the input image, a specific area which is an area having a specific state, and a combining portion that combines the background pattern image with the input image by placing not the plurality of first isolated points but the plurality of second isolated points in the specific area, and, by placing the plurality of first isolated points and the plurality of second isolated points in an area other than the specific area.

    摘要翻译: 背景图案图像获得背景图像与输入图像合成合成装置。 背景图案图像包括具有可以由图像读取器和的具有不能由图像读取器读取一个大小第二分离的点处的多个读取的尺寸的第一孤立点复数。 背景图案图像合成装置包括:检测器做检测,在输入图像中,特定areaswhich是具有特定状态的区域,以及组合部分并通过将第一不多元性结合了输入图像中的背景图案图像 孤立点但第二孤立点在特定区域内的多个,并且,通过将第一孤立点的多元性和第二孤立点中除了特定区域以外的区域中的多元性。

    METHODS FOR WATERMARKING MEDIA DATA
    6.
    发明公开
    METHODS FOR WATERMARKING MEDIA DATA 有权
    程序水印介质上的数据

    公开(公告)号:EP2082527A1

    公开(公告)日:2009-07-29

    申请号:EP07815972.0

    申请日:2007-10-18

    IPC分类号: H04L9/32

    摘要: Methods are provided for encoding watermark information into media data containing a series of digital samples in a sample domain. The method involves: dividing the series of digital samples into a plurality of sections in the sample domain, each section comprising a corresponding plurality of samples; processing the corresponding plurality of samples in each section to obtain a single energy value associated with each section; grouping the sections into groups, each group containing three or more sections; assigning a nominal bit value to each group according to a bit assignment rule, the bit assignment rule based on the energy values of the sections in the group; and assigning a watermark bit value to each group. The methods also involve, for each group, comparing the watermark bit value to the nominal bit value and, if the nominal bit value and the watermark bit value of the watermark information bit do not match, modifying one or more energy values of one or more corresponding sections in the group such that re-application of the bit assignment rule would assign the watermark bit value to the group. The bit assignment rule may comprise: a categorization rule for categorizing each group into one of a plurality of categories; and for each category, a unique category bit assignment rule for assigning a nominal zero bit value or a nominal one bit value to each group.

    Improved techniques for detecting, analyzing, and using visible authentification patterns
    8.
    发明公开
    Improved techniques for detecting, analyzing, and using visible authentification patterns 审中-公开
    改进的技术用于检测,分析和使用可见的认证模式

    公开(公告)号:EP1780635A3

    公开(公告)日:2007-10-03

    申请号:EP06121845.9

    申请日:2005-01-06

    申请人: Thomson Licensing

    IPC分类号: B42D15/00

    摘要: Improved techniques for making copy detection patterns (105) and using them to detect copying relationships between digital representations. The techniques include techniques for including a message in a copy detection pattern (105) without altering the copy detection patterns entropy and reading the message, techniques for using a copy detection pattern on an analog form to determine whether the analog form is an original analog form without reference to a digital representation of the original of the analog form's copy detection pattern, techniques for increasing the sensitivity of copy detection using copy detection patterns by modifying one of two copy detection patterns that are being compared to take into account alterations resulting from the copying process, techniques for distributing a copy detection pattern across a document, and techniques for using the entropy of a copy detection pattern to locate the copy detection pattern. Also disclosed are applications of copy detection patterns with copying that involves transformations between the digital and analog forms and with digital-to-digital copying.

    摘要翻译: 改进了制作复制检测模式(105)的技术并使用它们来检测数字表示之间的复制关系。 该技术包括用于在复制检测图案(105)中包括消息而不改变复制检测图案熵并读取消息的技术,用于在模拟形式上使用复制检测图案以确定模拟形式是否是原始模拟形式 而不参考模拟形式的复制检测图案的原件的数字表示,通过修改正在比较的两个复制检测图案中的一个以考虑到由复制导致的改变来提高使用复制检测图案的复制检测的灵敏度的技术 处理,用于在文档上分发复制检测图案的技术以及用于使用复制检测图案的熵来定位复制检测图案的技术。 还公开了涉及复制的复制检测模式的应用,其涉及数字和模拟形式之间的转换以及数字 - 数字复制。

    Robustes digitales Wasserzeichen für Vektorschriften
    9.
    发明公开
    Robustes digitales Wasserzeichen für Vektorschriften 有权
    Robustes digitales WasserzeichenfürVektorschriften

    公开(公告)号:EP1835718A1

    公开(公告)日:2007-09-19

    申请号:EP07103933.3

    申请日:2007-03-12

    IPC分类号: H04N1/32 G06T1/00

    摘要: Das Verfahren zum Einbetten von binärer Wasserzeicheninformation in Vektorschriftzeichen, die unter anderem durch Linien definiert sind, welche jeweils eine Breite aufweisen, wobei die Linien der Vektorschriftzeichen in Linienbreitengruppen unterschiedlicher, jeweils durch einen unteren und einen oberen Grenzwert definierter Breitenbereiche unterteilt sind, umfasst die folgenden Schritte:
    a) zufälliges oder pseudozufälliges Auswählen von zwei Linien eines Vektorschriftzeichens oder je einer Linie zweier Vektorschriftzeichen mit zu einer gemeinsamen Linienbreitengruppe gehörenden Breiten,
    b) Definieren der einen Linie als erste Linie und der anderen Linie als zweite Linie, und
    c) Verändern des Breitenverhältnisses der beiden Linien derart, dass die erste Linie breiter ist als die zweite Linie und beide Linien jeweils eine Breite aufweisen, die innerhalb des Breitenbereichs der Linienbreitengruppe liegt, wodurch eine erste binäre Wasserzeicheninformation in das bzw. in die Vektorschriftzeichen eingebettet wird oder
    d) Verändern des Breitenverhältnisses der beiden Linien derart, dass die erste Linie schmaler ist als die zweite Linie und beide Linien jeweils eine Breite aufweisen die innerhalb des Breitenbereichs der Linienbreitengruppe liegt, wodurch eine zweite binäre Wasserzeicheninformation in das bzw. in die Vektorschriftzeichen eingebettet wird.

    摘要翻译: 该方法包括随机或伪随机选择矢量字符的两条纵向线(10,12)或具有属于一组公共线宽的宽度的两个矢量字符的线,并定义两条线。 两行之间的宽度关系以这样一种方式改变,使得一条线比另一行更宽和更窄,其中两个二进制水印信息被嵌入到矢量字符中。

    Improved techniques for detecting, analyzing, and using visible authentication patterns
    10.
    发明公开
    Improved techniques for detecting, analyzing, and using visible authentication patterns 审中-公开
    改进的可见认证结构的检测,分析和使用方法

    公开(公告)号:EP1808826A2

    公开(公告)日:2007-07-18

    申请号:EP06121849.1

    申请日:2005-01-06

    申请人: Thomson Licensing

    IPC分类号: G07D7/12

    摘要: Improved techniques for making copy detection patterns and using them to detect copying relationships between digital representations. The techniques include techniques for including a message in a copy detection pattern without altering the copy detection patterns entropy and reading the message, techniques for using a copy detection pattern on an analog form to determine whether the analog form is an original analog form without reference to a digital representation of the original of the analog form's copy detection pattern, techniques for increasing the sensitivity of copy detection using copy detection patterns by modifying one of two copy detection patterns that are being compared to take into account alterations resulting from the copying process, techniques for distributing a copy detection pattern across a document, and techniques for using the entropy of a copy detection pattern to locate the copy detection pattern. Also disclosed are applications of copy detection patterns with copying that involves transformations between the digital and analog forms and with digital-to-digital copying.

    摘要翻译: 改进的技术用于制作拷贝检测图样并用它们来检测数字表示之间的复制关系。 该技术包括用于包含在拷贝检测图案的消息,而不改变拷贝检测图样熵和读取消息的技术,用于使用上成模拟形式拷贝检测图案确定性矿无论模拟形式是原始模拟形式而不参考技术 模拟形式的拷贝检测图案的原始的数字表示,用于通过修改两个拷贝检测模式之一使用复制检测图案提高复印检测的灵敏度的技术也被比较以考虑改变从拷贝过程导致,技术 用于跨文档分发拷贝检测图案,和技术用于使用拷贝检测图案的熵来定位拷贝检测图案。 所以盘游离缺失与复制所做的拷贝检测模式的应用程序涉及数字和模拟形式之间,并与数字到数字拷贝转换。