A foreign object detection method, device and computer-readable storage medium

Abstract

The embodiment of the present invention discloses a foreign matter detection method, device and computer-readable storage medium, which collect the thickness signals of the objects to be detected; for the objects to be detected with their own protrusions, there will be objects to be detected in the thickness signals of each path The thickness signal corresponding to the position of the self-protrusion, in order to avoid the interference of the self-protrusion to the foreign object detection result, before the foreign object analysis, the thickness signal corresponding to the position of the self-protrusion of the object to be detected can be deleted, that is, from each thickness signal Screen out the thickness signals to be analyzed that meet the preset conditions; sequentially determine whether the target thickness value of each thickness signal to be analyzed is greater than the thickness threshold; Paste of foreign matter. When performing foreign object detection, the accuracy of the detection result is effectively improved by excluding the thickness signal corresponding to the position of the protrusion of the object to be detected.

Description

technical field [0001] The present invention relates to the technical field of pattern recognition, in particular to a foreign matter 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 to paper samples is an indispensable function. [0003] Taking banknotes as an example, during the daily circulation of banknotes, foreign objects may be pasted on the face of banknotes, especially some foreign objects with adhesive properties, such as adhesive tape. Foreign matter pasted on the banknotes will affect the normal use of the banknotes, which may lead to the unrecognizable situation of the self-service deposit / cash machine. [0004] In the prior art, in order to reduce the influence of foreign matter pasted on the banknote, foreign matter detection can be performed on the banknote, but the anti-counterfeiting thread of the banknote, ...

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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