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    • 4. 发明申请
    • Method for preventing counterfeiting or alteration of a prited or engraved surface
    • 用于防止伪造或雕刻表面的假冒或改变的方法
    • US20040013285A1
    • 2004-01-22
    • US10380914
    • 2003-08-04
    • Frederic JordanRoland MeylanMartin Kutter
    • G06K009/00
    • G07D7/004G07D7/0056
    • The invention describes a process to prevent counterfeiting or alteration of a printed or engraved surface, characterized by the incorporation of a signature of the form of a digital mark into parts or the entire document, and in particular a digital mark technology to hide information in an invisible way through over-printing by using a method called asymmetric amplitude modulation. This method can be applied to any type of printed material such paper, packaging, or any other surface. Visible information can also be printed over the digital mark. As an application example, applied to a paper document the digital mark can be used to guarantee the document authenticity, as it would be destroyed by a copy process.
    • 本发明描述了防止伪造或改变印刷或雕刻表面的过程,其特征在于将数字标记形式的签名结合到部分或整个文档中,特别是数字标记技术以将信息隐藏在 通过使用称为非对称幅度调制的方法通过过度印刷来看不见的方式。 该方法可以应用于任何类型的印刷材料,例如纸,包装或任何其它表面。 可见信息也可以打印在数字标记上。 作为应用示例,应用于纸质文档的数字标记可用于保证文档真实性,因为它将被复制过程所破坏。
    • 5. 发明授权
    • Image marking with pixel modification
    • 图像标记与像素修改
    • US06628801B2
    • 2003-09-30
    • US09417153
    • 1999-10-12
    • Robert D. PowellMark J. Nitzberg
    • Robert D. PowellMark J. Nitzberg
    • H04K100
    • G06T1/0064G06Q20/341G06T1/0028G06T2201/0051G06T2201/0081G07D7/0047G07D7/0056G07D7/12G07D7/20G07D7/2008G07D7/2033G07F7/08G07F7/12H04N1/32203H04N1/32208H04N1/32229H04N1/32245H04N1/32251H04N1/32288H04N1/3232H04N2201/3233H04N2201/3235H04N2201/327
    • A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature persisting through image transforms that include resizing as well as conversion to print or film and back to digital form. Signature points are selected from among the pixels of an original image. The pixel values of the signature points and surrounding pixels are adjusted by an amount detectable by a digital scanner. The adjusted signature points form a digital signature which is stored for future identification of subject images derived from the image. In one embodiment, a signature is embedded within an image by locating relative extrema in the continuous space of pixel values and selecting the signature points from among the extrema. Preferably, the signature is redundantly embedded in the image such that any of the redundant representations can be used to identify the signature. Identification of a subject image includes ensuring that the subject image is normalized with respect to the original image or the signed image. Preferably, the normalized subject image is compared with the stored digital signature.
    • 一种用于在数字表示和打印或电影中的可视图像中嵌入签名的方法和系统。 签名不可分割地嵌入在可见图像中,签名通过图像变换持续存在,包括调整大小以及转换以打印或电影并返回到数字形式。 从原始图像的像素中选择签名点。 签名点和周围像素的像素值被数字扫描仪检测到的量调整。 经调整的签名点形成数字签名,该数字签名被存储用于将来识别从图像导出的被摄体图像。 在一个实施例中,通过将相对极值定位在像素值的连续空间中并从极值中选择签名点,将签名嵌入图像内。 优选地,签名冗余地嵌入在图像中,使得可以使用任何冗余表示来识别签名。 被摄体图像的识别包括确保被摄体图像相对于原始图像或有符号图像被归一化。 优选地,将归一化的对象图像与存储的数字签名进行比较。
    • 7. 发明授权
    • Anti-counterfeiting feature generation method for valuable document and authentication method and device therefor
    • 防伪特征生成方法及其认证方法及其设备
    • US09499006B2
    • 2016-11-22
    • US14426949
    • 2013-03-19
    • GRG Banking Equipment Co., Ltd.
    • Tiancai LiangYuanchao YuWeifeng WangXiaoliang Wang
    • G06K7/00B42D25/30G07D7/00G07D7/20B42D25/405
    • B42D25/30B42D25/405G07D7/00G07D7/0034G07D7/0053G07D7/0056G07D7/206
    • An anti-counterfeiting feature generation method for a valuable document and an authentication method and device therefor. The anti-counterfeiting feature generation method for a valuable document uses the anti-counterfeiting feature information redundancy to hide accurate information about an anti-counterfeiting feature. In the generation method, the anti-counterfeiting feature of a valuable document has little change on the human perception, but a valuable document authentication device in a financial self-service equipment can effectively extract the hidden accurate information about an anti-counterfeiting feature from signals obtained by a sensor and conduct quantitative detection and authentication, thereby effectively authenticating whether the valuable document is counterfeit or not. A new anti-counterfeiting feature which facilitates machine recognition is loaded to the valuable document, and a corresponding valuable document authentication device is configured to a financial self-service equipment, so that the financial self-service equipment can read the anti-counterfeiting feature of the valuable document by facilitating machine recognition, thereby improving the authentication accuracy of the financial self-service equipment to the valuable document.
    • 一种用于有价值的文档的防伪特征生成方法及其认证方法和装置。 用于有价值的文档的防伪特征生成方法使用防伪特征信息冗余来隐藏关于防伪特征的准确信息。 在生成方法中,有价值的文件的防伪特征对人的感知几乎没有变化,但金融自助服务设备中的有价值的文件认证装置可以有效地从信号中提取关于防伪特征的隐藏的准确信息 通过传感器获取并进行定量检测和认证,从而有效地认证有价证件是否是假冒的。 将有助于机器识别的新的防伪特征加载到有价值的文档中,并且将相应的有价值的文档认证设备配置为金融自助设备,使得金融自助设备可以读取防伪特征 通过促进机器识别的有价值的文件,从而提高了金融自助服务设备对有价值文件的认证准确性。
    • 10. 发明授权
    • Method for preventing the falsification of documents comprising a photograph, preferably a facial-view photograph
    • 防止伪造文件的方法,包括照片,优选面部照片
    • US06636614B1
    • 2003-10-21
    • US09423355
    • 2000-02-14
    • Mario KoeppenWolfgang AdamBertram Nickolay
    • Mario KoeppenWolfgang AdamBertram Nickolay
    • G06K900
    • G07F7/08G07D7/0056G07D7/206G07F7/12G09C5/00H04N1/32203H04N1/32208
    • Disclosed is a method for counterfeit-proof of documents bearing a picture. The picture is transferred into a digital image file or present as a digital image file into which a binary form secret image present is incorporated. The digital image file is divided into cells of a number equaling a number of pixels of the secret image. A parameter function allocates a binary output value to each cell on the basis of parameter values, which describe each image point, in such a manner that the bivalent output value of all the cells yields a bivalent position matrix, by the parameter values of the image points of the individual cells being modified with the aid of an optimizing process in such a manner that, first, the changes made to the image file of the picture of the document result in no visually perceivable changes and, second, the result of applying the parameter function to the individual cells yields a bivalent position matrix which corresponds to the binary values of the secret image.
    • 公开了一种用于防伪图像的文件的方法。 图像被转移到数字图像文件中或呈现为数字图像文件,其中并入了存在二进制形式的秘密图像。 数字图像文件被划分成等于秘密图像的像素数的数字的单元。 参数函数基于参数值分配二进制输出值,该参数值描述每个图像点,以使得所有单元的二价输出值产生二值位置矩阵,由图像的参数值 借助于优化处理,各个单元的点被修改,使得首先,对文档的图像的图像文件进行的改变导致没有视觉上可察觉的改变,第二,应用 对于各个单元的参数函数产生对应于秘密图像的二进制值的二价位置矩阵。