Banknote surface foreign matter detecting method and device thereof

Abstract

The invention is suitable for the technical field of banknote identification, and provides a banknote surface foreign matter detecting method and a device thereof. The method comprises the steps that the thickness data of a banknote to be detected are acquired; according to the thickness data of the banknote to be detected and a preset thickness characteristic information extraction algorithm, thickness characteristic information in the thickness data is extracted; a preset thickness similarity algorithm is used to carry out thickness similarity operation on the thickness characteristic information of the banknote to be detected and a preset thickness template; and whether a foreign matter exists on the surface of the banknote to be detected is judged according to the operation result. According to the invention, the thickness data of a banknote to be detected are acquired and match the preset template to determine whether the thickness of the banknote is normal; and the problem that the existing banknote surface foreign matter detecting technology is mainly dependent on the human eye to observe and judge, has high human cost, and has low detection efficiency when a large number of banknotes need to be sorted is solved.

Description

technical field [0001] The invention belongs to the technical field of banknote identification, and in particular relates to a method and a device for detecting foreign objects on the surface of banknotes. Background technique [0002] With the development of the economy, the circulation of banknotes has also increased accordingly. In order to facilitate the sorting of a large number of banknotes, it is often detected whether there are foreign objects on the surface of the banknotes. When it is judged that there are foreign objects on the surface of the banknotes, it may be necessary to perform related operations such as cleaning. The existing foreign object detection technology on the surface of banknotes mainly relies on human eyes for observation and judgment. However, this method requires high labor costs, and when a large number of banknotes need to be sorted, the detection efficiency is low. Contents of the invention [0003] The purpose of the embodiments of the p...

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method and device for detecting foreign objects on the surface of banknotes, aiming to solve the problem that the existing detection technology for foreign objects on the surface of banknotes mainly relies on human eyes for observation and judgment, and the labor cost is relatively high. When sorting banknotes, the detection efficiency is low

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