IMAGE WATERMARKING
    42.
    发明公开
    IMAGE WATERMARKING 有权
    图像水印

    公开(公告)号:EP1908007A1

    公开(公告)日:2008-04-09

    申请号:EP06752666.5

    申请日:2006-07-04

    IPC分类号: G06T1/00

    摘要: A method (100) of watermarking an image (101) is disclosed. The method (100) segments the image (101) into regions. Each region is then characterised based upon one or more statistical features of the respective regions. For each region, a watermarking method and a number of bits to be embedded into the respective region are selected based on the characterization of the region. The number of bits of data is then embedded into the respective region using the watermarking method selected for that region. A method (105) of decoding a watermarked image (145) is also disclosed.

    摘要翻译: 公开了一种对图像(101)加水印的方法(100)。 方法(100)将图像(101)分割成区域。 然后基于各个区域的一个或多个统计特征来表征每个区域。 对于每个区域,基于区域的表征来选择要嵌入到相应区域中的水印方法和多个比特。 然后使用为该区域选择的水印方法将数据的位数嵌入到相应的区域中。 还公开了对水印图像(145)进行解码的方法(105)。

    Improved techniques for detecting, analyzing, and using visible authentication patterns
    44.
    发明公开
    Improved techniques for detecting, analyzing, and using visible authentication patterns 有权
    用于检测,分析和使用可见验证模式的改进技术

    公开(公告)号:EP1780636A2

    公开(公告)日:2007-05-02

    申请号:EP06121847.5

    申请日:2005-01-06

    IPC分类号: G06F7/02

    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: 改进了制作复制检测模式的技术,并使用它们来检测数字表示之间的复制关系。 这些技术包括用于在复制检测模式中包括消息而不改变复制检测模式熵并读取消息的技术,用于使用模拟形式上的复制检测模式来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,用于通过修改正在比较的两个复制检测图案中的一个来考虑由复制过程产生的改变来使用复制检测图案来增加复制检测的灵敏度的技术,技术 用于在文档上分发复制检测图案,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。

    Improved techniques for detecting, analyzing, and using visible authentification patterns
    45.
    发明公开
    Improved techniques for detecting, analyzing, and using visible authentification 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:EP1780635A2

    公开(公告)日:2007-05-02

    申请号:EP06121845.9

    申请日:2005-01-06

    申请人: Thomson Licensing

    IPC分类号: G06F7/02

    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(105),并利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(105)的消息,而不改变拷贝检测图样熵和读取消息的技术,用于使用确定性矿拷贝检测图案上成模拟形式无论模拟形式是原始模拟形式的技术 不参考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所述复制所得 过程中,技术用于跨文档分发拷贝检测图案,以及用于使用拷贝检测图案的熵来定位拷贝检测图案的技术。 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。

    Data processing system, maintenance apparatus and image processing apparatus
    48.
    发明公开
    Data processing system, maintenance apparatus and image processing apparatus 有权
    Datenverarbeitungsvorrichtung,Pflegevorrichtung und Bildverarbeitungsvorrichtung

    公开(公告)号:EP1227649A2

    公开(公告)日:2002-07-31

    申请号:EP01308972.7

    申请日:2001-10-23

    IPC分类号: H04N1/00

    摘要: This invention relates to a method of setting anti-forgery information addition level while taking an apparatus individual difference into consideration. The method is employed by a data processing system including: an image processing apparatus 100 for processing an image; and a maintenance apparatus 120, connected with the image processing apparatus through a network 110, for setting a processing function of the image processing apparatus 100. The maintenance apparatus 120 determines an anti-forgery information addition level depending on an individual difference of apparatuses, such as an exhaustion level of the image processing apparatus 100. The addition level determined by the maintenance apparatus 120 is transmitted to the image processing apparatus 100. The image processing apparatus 100 adds anti-forgery information to an inputted image at the addition level transmitted by the maintenance apparatus 120.

    摘要翻译: 本发明涉及一种在考虑设备个体差异的同时设置防伪信息添加级别的方法。 该方法由数据处理系统采用,包括:图像处理装置100,用于处理图像; 以及通过网络110与图像处理装置连接的维护装置120,用于设定图像处理装置100的处理功能。维护装置120根据装置的个体差异来确定防伪信息添加级别,例如 作为图像处理装置100的耗尽级别。由维护装置120确定的相加等级被发送到图像处理装置100.图像处理装置100将加密级别的防伪信息添加到由 维护装置120.