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A method and device for detecting banknotes
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A banknote and technology to be detected, which is applied to the authenticity inspection of banknotes, handling coins or valuable banknotes, instruments, etc., to avoid repeated traversal, reduce false detection rate, and improve efficiency
Active Publication Date: 2018-07-17
SHENZHEN YIHUA COMP +2
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[0003] The purpose of the embodiments of the present invention is to provide a method and device for detecting banknotes, aiming to solve the problem of how to quickly locate the abnormal thickness area of banknotes
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Embodiment 1
[0048] refer to figure 1 , figure 1 It is a schematicflowchart of a method for detecting banknotes according to an embodiment of the present invention.
[0049] In Embodiment 1, the method for detecting banknotes includes:
[0050] Step 101, obtaining effective thickness data of banknotes to be detected;
[0051] Specifically, refer to figure 2 as shown, figure 2 It is a schematic diagram of a method for acquiring data of banknotes to be detected provided by an embodiment of the present invention. Such as figure 2 As shown, the detection data of a single channel when the thickness sensor passes through banknotes is extracted one by one.
[0052] All data acquired by the thickness sensor after a single banknote has passed such as image 3 as shown, image 3 It is a schematic diagram of data of banknotes to be detected after acquisition provided by the embodiment of the present invention. exist image 3 Among them, the three coordinates are the thickness, the senso...
Embodiment 2
[0077] refer to Figure 9 , Figure 9 It is a schematic diagram of functional modules of a device for detecting banknotes according to an embodiment of the present invention.
[0078] In the second embodiment, the device for detecting banknotes includes:
[0079] The first acquisition module 901 is used to acquire effective thickness data of banknotes to be detected;
[0080] refer to figure 2 as shown, figure 2 It is a schematic diagram of a method for acquiring data of banknotes to be detected provided by an embodiment of the present invention. Such as figure 2 As shown, the detection data of a single channel when the thickness sensor passes through banknotes is extracted one by one.
[0081] All data acquired by the thickness sensor after a single banknote has passed such as image 3 as shown, image 3 It is a schematic diagram of data of banknotes to be detected after acquisition provided by the embodiment of the present invention. exist image 3 Among them, t...
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Abstract
The embodiment of the present invention discloses a method and device of banknote detection. The method provided by the invention comprises: acquiring effective thickness data of banknotes to be detected; obtaining data information of the effective thickness data in a certain local scope according to a preset rule; determining whether the banknotes are abnormal or not according to the data information, the pre-stored banknote thickness abnormity information with respect to the date information; and extracting a method for positioning the abnormity positions, and performing accurate detection in the later period after the approximate scope of thickness abnormity is positioned. Therefore the false detection rate of thickness abnormity is greatly reduced, the repeated traverse of the whole thickness data is avoided, and the efficiency of the algorithm is improved.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of banknote processing, in particular to a method and device for detecting banknotes. Background technique [0002] In the abnormal detection of banknote thickness, how to quickly locate the abnormal area is often a crucial step for the accuracy and efficiency of the algorithm. In general processing methods, clustering or other conventional image processing algorithms (such as watershedalgorithm) are used. To confirm the abnormal area, this method requires repeated traversal of the data, and when the threshold is unreasonable, either there are too many areas to search or some abnormal thickness areas are easy to miss. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a method and device for detecting banknotes, aiming at solving the problem of how to quickly locate the abnormal thickness area of banknotes. [0004] To achi...
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