Printing and validation of self validating security documents
    3.
    发明授权
    Printing and validation of self validating security documents 有权
    使用数字水印验证自我验证的安全文件

    公开(公告)号:US06389151B1

    公开(公告)日:2002-05-14

    申请号:US09442780

    申请日:1999-11-18

    Abstract: Security documents which has multiple fields or areas each of which contains information that is perceptible in more than one way: One field can contain a visually perceptible image and a digital watermark that can be detected when the image is scanned and processed, another field can contain machine readable OCR text that can be read by both a human and by a programmed computer, and still another field can contain watermark data which can be correlated to the output of a fingerprint reader or apparatus which scans a user's iris. Documents are produced by begining with a template which defines the placements of elements on the document and the interrelationships between hidden and visual information on the document. The template specifies the placement of elements such as images, photographs, and text and it also specifies the interrelationship between information that is visually perceptible to a user of the document and information that is hidden by means of digital watermarks. Different hidden digital watermark data is included in multiple elements of the document. The watermarks in the different graphic elements of the document are correlated to each other and correlated to the visual material on the document. Thus, the document can not be forged by replacing one element (such as a picture) with a similar element from another document. In order to produce a document defined by a particular template, appropriate pictures, graphics and digital data are extracted from a data bank, and watermark data is embedded in the pictures and graphics as appropriate. The merged digital data is then sent to a printing engine and the final document is produced. An automatic validation system of the present invention reads multiple fields on the document, and it also automatically detects information about the user. The various information is correlated to validate the document.

    Abstract translation: 具有多个字段或区域的安全文件,每个字段或区域都包含以多种方式可察觉的信息:一个字段可以包含视觉上可见的图像和可以在扫描和处理图像时检测到的数字水印,另一个字段可以包含 可由人类和编程的计算机读取的机器可读的OCR文本,还有另一领域可以包含可以与扫描用户的虹膜的指纹读取器或装置的输出相关联的水印数据。 文件通过开始定义文档上的元素的位置以及文档上的隐藏和可视信息之间的相互关系的模板来生成。 该模板指定诸如图像,照片和文本之类的元素的放置,并且还指定了文档用户在视觉上可感知的信息与通过数字水印隐藏的信息之间的相互关系。 不同的隐藏数字水印数据被包含在文档的多个元素中。 文档的不同图形元素中的水印彼此相关并与文档上的视觉材料相关联。 因此,通过用另一个文档中的类似元素替换一个元素(如图片),无法伪造该文档。 为了产生由特定模板定义的文档,从数据库提取适当的图片,图形和数字数据,并且水印数据被适当地嵌入在图片和图形中。 然后将合并的数字数据发送到打印引擎,并生成最终文档。 本发明的自动验证系统读取文档上的多个字段,并且还自动检测关于用户的信息。 各种信息相关以验证文档。

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