Method for detecting folded corners of paper money

Abstract

The invention discloses a method for detecting folded corners of paper money. The method includes the steps: extraction of paper money infrared reflection graphs: extracting infrared reflection graphs of a detection sensor; judgment of paper money corner image incompleteness: judging whether four corners of paper money is incomplete or not, and if a certain corner of the paper money is incomplete, judging whether an incomplete part of the paper money is folded or cut off according to the infrared reflection graphs; linear detection: subjecting corner images of the paper money with incomplete corners to edge linear detection to determine whether the incomplete corners have straight lines or not; paper money folded corner judgment: if a certain corner of the paper money has a straight line, extracting the infrared reflection graphs of the paper money to determine whether the incomplete part of the paper money is folded or cut off, and determining that the corner is a folded corner if the incomplete part of the paper money is folded. According to the method, whether the incomplete parts of the paper money are folded corners or not can be judged, sizes of the folded corners can be judged as well, and accordingly money detection efficiency and acceptance of the paper money with the folded corners are improved.

Description

[technical field] [0001] The invention relates to banknote detection, in particular to a method for detecting banknote folding angles. [Background technique] [0002] The banknote verification module of the ATM machine is the core part of the ATM machine. No one wants to receive counterfeit money on the ATM machine. Therefore, when the ATM machine checks banknotes, it will check all aspects of the banknotes, such as authenticity, counterfeit, positive, and damage. In the existing banknotes in circulation, due to various reasons, there are a large number of banknotes with small folded corners. During the banknote inspection process of automatic deposit and withdrawal of ATM machines, the integrity of the banknote images will be inspected and analyzed, and there are a large number of small folded corners. The normal banknotes will not be identified as abnormal banknotes through banknote inspection, and a large number of banknotes will be rejected or scrapped when using ATM mac...

AI Technical Summary

Problems solved by technology

In the existing banknotes in circulation, due to various reasons, there are a large number of banknotes with small folded corners. During the banknote inspection process of automatic deposit and withdrawal of ATM machines, the integrity of the banknote images will be inspected and analyzed, and there are a large number of small folded corners. The normal banknotes will not be identified as abnormal banknotes through banknote inspection, and a large number of rejected banknotes or invalid banknotes will be generated when using ATM machines to deposit and withdraw money, thus affecting the banknote inspection efficiency of ATM machines and reducing the efficiency of deposit and withdrawal work

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