FIELD: information technology.
SUBSTANCE: in the method, intensity of the measuring signal is determined at several analysed points on the valuable document. The signal intensity gradient values are determined for one or more selected groups of analysed points located on the valuable document, primarily along defined directions. By associating gradient values corresponding to one group of analysed points, the degree of association is determined, which characterises that group of analysed points and enables to quantitatively evaluate to what degree a high gradient value entirely exists in a specific group of analysed points. Based on the relatively high degree of association, presence of a separating line on the area where the selected group of analysed points is located can be determined.
EFFECT: high reliability of detecting forged documents made from separate parts of valuable documents.
24 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND APPARATUS FOR CHECKING VALUABLE DOCUMENTS | 2008 |
|
RU2469405C2 |
| VALUABLE DOCUMENT, METHOD OF ITS MANUFACTURING, AND ALSO METHOD AND DEVICE FOR VERIFICATION OF VALUABLE DOCUMENTS | 2006 |
|
RU2415756C2 |
| DEVICE FOR AUTHENTICATING VALUABLE DOCUMENTS | 2011 |
|
RU2574120C2 |
| METHOD FOR CHECKING VALUE DOCUMENT | 2014 |
|
RU2674940C2 |
| CHECKING INTEGRITY OF A VALUABLE DOCUMENT | 2016 |
|
RU2724173C2 |
| IMPORTANT DOCUMENT | 2004 |
|
RU2365511C2 |
| METHOD FOR PRODUCING VALUABLE DOCUMENT PROTECTED FROM PARTIAL FORGERY, AND RECEIVED DOCUMENT | 2016 |
|
RU2616643C1 |
| IMPORTANT DOCUMENT | 2004 |
|
RU2361744C2 |
| AUTHENTICATION OF VALUABLE DOCUMENTS | 2016 |
|
RU2710766C1 |
| METHOD AND DEVICE FOR CHECKING BANKNOTES | 2005 |
|
RU2381560C2 |
