Method and apparatus for determining document authenticity
    1.
    发明授权
    Method and apparatus for determining document authenticity 有权
    确定文件真实性的方法和装置

    公开(公告)号:US06621916B1

    公开(公告)日:2003-09-16

    申请号:US09389675

    申请日:1999-09-02

    IPC分类号: G06K900

    摘要: A method and apparatus for verifying the authenticity of a document relative to a previously programmed document are disclosed. The method provides a broadband light source; illuminates a document with the light source; collects reflected light; converts it into a corresponding electrical signal or signals; digitizes the electrical signals; and prepares a spectral signature of the document for further analysis. The spectral signature can also be normalized to account for variations in analyzed documents caused by soiling and fading. The method also provides for comparing a previously programmed and stored spectral signature to the spectral signature of a test document using a matching value to indicate whether the test document is authentic or not. The apparatus provides a device for application of the method for verifying document authenticity.

    摘要翻译: 公开了一种用于验证文档相对于先前编程的文档的真实性的方法和装置。 该方法提供宽带光源; 用光源照亮文件; 收集反射光; 将其转换为相应的电信号或信号; 数字化电信号; 并准备文档的光谱签名进行进一步分析。 光谱特征也可以归一化以考虑由污染和衰落引起的分析文件中的变化。 该方法还提供了使用匹配值将先前编程和存储的光谱特征与测试文档的光谱签名进行比较,以指示测试文档是否可信。 该装置提供了用于验证文档真实性的方法的应用的装置。