公开(公告)号：US20130208985A1

公开(公告)日：2013-08-15

申请号：US13729105

申请日：2012-12-28

Applicant: ChemImage Corporation

Inventor： Jeffrey Beckstead ,  Arjun Bangalore

IPC: G06K9/00

CPC classification number: G06K9/00442 ,  G01J3/02 ,  G01J3/0248 ,  G01J3/10 ,  G01J3/28 ,  G01J3/32 ,  G01N21/27 ,  G01N21/4738 ,  G01N21/55 ,  G01N21/6456 ,  G01N2021/6423 ,  G01N2021/6493 ,  G06K9/4652

Abstract: The present disclosure provides for a system and method for analyzing questioned documents. A sample document is illuminated to thereby generate a first plurality of interacted photons. The first plurality of interacted photons are detected at a first detector to thereby generate a digital image. The digital image is analyzed to thereby identify at least one region of interest of the sample document. This region of interest is illuminated to thereby generate a second plurality of interacted photons. This second plurality of interacted photons are passed through a tunable filter and detected at a second detector to thereby generate a hyperspectral image representative of the region of interest. The hyperspectral image may then be analyzed to evaluate changes to or differentiate different inks present in the sample document. Chemometric techniques such as k-means clustering, PCA, and/Or PLSDA may also be applied.

Abstract translation: 本公开提供了用于分析所询问的文档的系统和方法。 照射样品文件，从而产生第一多个相互作用的光子。 在第一检测器处检测第一多个相互作用的光子，从而生成数字图像。 分析数字图像，从而识别样本文档的至少一个感兴趣区域。 该感兴趣区域被照亮，从而产生第二多个相互作用的光子。 该第二组多个相互作用的光子通过可调滤光器并在第二检测器处检测，从而产生代表感兴趣区域的高光谱图像。 然后可以分析高光谱图像以评估样品文档中存在的不同油墨的变化或区别。 还可以应用诸如k-均值聚类，PCA和/或PLSDA的化学计量技术。