| 摘要 |
<p>The invention describes a method for checking valuable documents, in particular also soiled valuable documents, for authenticity, having the steps of acquiring pixel data relating to pixels in an image of the valuable document, determining pixels in one or at least two predefined examination areas of the image and determining, for the examination areas, error pixels among the pixels in the particular examination area, wherein the pixel data relating to the error pixels are each outside a predefined pixel-dependent and/or location-dependent authenticity range, checking whether or not the error pixels in the examination area(s) correspond to soiling, for example staining, on the valuable document, and assigning an authenticity class from predefined authenticity classes to the valuable document on the basis of the checking result.</p> |
