Foreign matter detecting method, foreign matter detecting device, and computer readable storage medium

Abstract

Embodiments of the invention disclose a foreign matter detecting method, a foreign matter detecting device and computer readable storage medium. The method comprises the following steps: collecting respective thickness signals of the articles to be detected, wherein for the articles to be detected that have their own humps, thickness signals corresponding to the positions of the humps of the articles to be detected their own exist in the respective thickness signals, and the thickness signals corresponding to the positions of the humps of the articles to be detected their own may be deleted, that is, the thickness signals to be analyzed that meets a preset condition are screened from the respective thickness signals, before the foreign matter analysis in order to prevent the humps their own from interfering the foreign matter detection result; determining whether the target thickness values of respective thickness signals to be analyzed are greater than a thickness threshold in turn; and when there is a thickness signal to be analyzed whose target thickness value is greater than the thickness threshold, determining that the articles to be detected have foreign matters pasted. During the foreign matter detection, the accuracy of the detection result is effectively improved by excluding the thickness signals corresponding to the positions of the humps of the articles to be detected their own.

Description

Technical field [0001] The present invention relates to the technical field of pattern recognition, in particular to a foreign object detection method, device and computer-readable storage medium. Background technique [0002] In the paper-related testing equipment of financial institutions, the detection of foreign matter sticking in paper samples is an indispensable function. [0003] Take banknotes as an example. In the daily circulation of banknotes, foreign objects may be stuck on the face of the banknotes, especially foreign objects with adhesive properties, such as adhesive tape. Sticking foreign objects on banknotes will affect the normal use of banknotes and may cause self-service deposit / cash machines to fail to recognize them. [0004] In the prior art, in order to reduce the impact of foreign matter pasted on banknotes, foreign matter detection may be performed on banknotes. However, the banknote anti-counterfeiting thread, that is, the security thread, will interfere wi...

AI Technical Summary

Problems solved by technology

Foreign matter pasted on the banknotes will affect the normal use of the banknotes, which may lead to unrecognizable situations at the self-service deposit / cash machine

[0004] In the prior art, in order to reduce the impact of foreign matter pasted on banknotes, foreign matter detection can be carried out on banknotes, but the anti-counterfeiting thread of banknotes, that is, the security thread, will interfere with the detection of foreign matter pasting, resulting in inaccurate detection results

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