FIELD: method for monitoring marks, made on printed documents.
SUBSTANCE: method includes making a digital image of front side of document by determining content of one-color and multi-color components of image pixels, content of color component of each pixel is compared to range from upper to lower thresholds for appropriate pixel of acceptable unmarked document and appropriate abnormal pixel is generated, if value of pixel is outside interval between upper and lower thresholds, then presence of mark different from dirt is detected, if abnormal pixels produced as a result satisfy previously set conditions.
EFFECT: provision of possible determining of some or other forms of distortion of document.
3 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETECTING FOREIGN IMAGES ON A BANKNOTE | 2019 |
|
RU2700737C1 |
| METHOD FOR BINARISATION OF IMAGES OF SYMBOLS ON A BANKNOTE BASED ON HISTOGRAM OF LENGTH OF BOUNDARIES | 2019 |
|
RU2718571C1 |
| METHOD TO CONVERT BITMAPPED IMAGE INTO METAFILE | 2011 |
|
RU2469400C1 |
| ATM MANAGEMENT SYSTEM AND METHOD | 2016 |
|
RU2708422C1 |
| METHOD OF RECOGNIZING A SYMBOL ON A BANKNOTE AND A COPROCESSOR FOR A COMPUTING SYSTEM OF A BANKNOTE PROCESSING DEVICE | 2019 |
|
RU2707320C1 |
| IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD | 2013 |
|
RU2566952C2 |
| METHOD FOR VISUAL DISPLAY AND ANALYSIS OF MULTIDIMENSIONAL OBJECT OR PROCESS ANOMALY | 2000 |
|
RU2200345C2 |
| INFORMATION CARRIER HAVING STRUCTURE WITH OPTICALLY VARIABLE PROPERTIES | 2005 |
|
RU2395842C2 |
| METHOD AND APPARATUS FOR EXPRESS INSPECTION OF DOCUMENTS AND BOND PAPER WITH ANTI-COUNTERFEIT FEATURES | 2012 |
|
RU2510943C2 |
| METHOD OF IDENTIFYING CONTAMINATION AND/OR WEARING OF INK IN COLOUR TRANSITION AREAS ON VALUABLE DOCUMENTS AND APPARATUS FOR REALISING SAID METHOD | 2007 |
|
RU2451340C2 |
