Method for extracting crown word numbers from scanned banknote images in banknote detection module

Abstract

The invention discloses a method for extracting crown word numbers from scanned banknote images in a banknote detection module. The method comprises the following steps that the green ray of an image sensor is used for banknote collecting to form source images, the boundaries, in the source images, of the banknote images are found by adopting the mode of scanning boundary points, and then the banknote images are turned over and corrected to the horizontal state; feature points are extracted, and face value and orientation of banknotes are identified according to the obtained feature points; crown word number areas are determined, binarization processing is adopted for the crown word number areas, the obtained binarization images of the crown word number areas are searched for the boundaries containing all crown word numbers, then each single crowd word number is segmented, and a support vector machine identifies and processes the segmented and normalized single word images. The method for extracting the crown word numbers from the scanned banknote images provides a powerful support for identifying the authenticity of banknotes, crown word numbers can be identified accurately, the ability to identify the authenticity of banknotes is greatly improved, and the property safety of the financial department is effectively protected.

Description

technical field [0001] The invention relates to a method for extracting serial numbers from scanned banknote images in a banknote checking module. Background technique [0002] In China, where the economy is developing rapidly, the circulation of banknotes is also doubling. Faced with the large-scale circulation of various types of banknotes, the pressure on the relevant regulatory authorities is also increasing, and the work cannot be comprehensive. After using the serial number to identify It can more effectively help the work of regulatory authorities and financial institutions, and also improve the property safety factor of the people. The traditional serial number identification method does not treat banknotes with different denominations differently, and uses the same algorithm to process all banknotes, resulting in a low recognition rate for banknotes; in addition, the traditional serial number identification method requires banknotes The gray value of each pixel of ...

AI Technical Summary

Problems solved by technology

The traditional serial number identification method does not treat banknotes with different denominations differently, and uses the same algorithm to process all banknotes, resulting in a low recognition rate for banknotes; in addition, the traditional serial number identification method requires banknotes The gray value of each pixel of the image is calculated, resulting in a large amount of calculation, and it takes a long time for the equipment to recognize the serial number on the banknote

In addition, small-denomination banknotes in the market usually have a larger circulation than large-denomination banknotes, and the stains will be more serious. When the same algorithm is used to identify the serial number on the banknote, the recognition accuracy is not high

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