Method and device for acquiring number of paper currency or financial bill, and method and device for identifying paper currency and financial bill
A technology for obtaining methods and numbers, applied in the field of information and images, can solve problems such as insufficient use of machinery or convenience of operation procedures, and achieve the effects of increasing the amount of useful information, improving the level of recognition rate, and improving recognition accuracy
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Example Embodiment
[0046] Example one
[0047] In this embodiment, firstly, according to the layout of the banknote numbers, and according to the position of the banknote number on the layout, a number collection device is pre-installed on the banknote conveying channel. Specifically, the number collection device is installed on the "only way" of the banknote serial number. Devices, such as image sensors; only extract images of areas that may include numbers (called "number areas"). The range of the number area is determined by the size of the banknote number to ensure that the number can appear in the normal passage. Just within this area.
[0048] Taking RMB as an example, RMB banknotes have only one number located at the corner, and there are four possible positions when the number passes through the number collection device set on the conveying channel, namely figure 1 The number areas in I, II, III, IV. Such as figure 1 As shown, A1, A2, A3, and A4 indicate the situation when the number area ...
Example Embodiment
[0063] Example two
[0064] In this embodiment, it is basically the same as the first embodiment. The difference is that the process of obtaining the banknote number requires two operations, that is, the first operation is as described in the first embodiment, and the second time is to change the direction of the banknote and then do it again. Set up two number collection devices (image sensors), in figure 1 Shown in positions Q1 and Q3, or positions Q2 and Q4.
[0065] After the first detection, the total number of banknotes is known. In the process of counting the front and back of the same bundle of banknotes, the number of a certain banknote in the first time and the number of the same banknote when the banknote is counted on the reverse side must be complementary to the total number of banknotes. And the position where the number appears can also be calculated according to the position of the first appearance. Specifically, Q1 and Q3 are symmetrical, that is, the first time ...
Example Embodiment
[0070] Example three
[0071] In this embodiment, according to the position of the banknote number, two number collection devices are arranged at the predetermined position of the banknote transport channel, such as Figure 5a and 5b As shown, two number collection devices (image sensors) are set at positions Q1 and Q2 (or positions Q3 and Q4).
[0072] Assuming that number collection devices (image sensors) are installed at positions Q1 and Q2, refer to Image 6 , The method for obtaining banknote numbers provided in this embodiment includes:
[0073] S201: When the banknote to be inspected reaches a predetermined position, images of the number area I and the number area II of the banknote are respectively collected;
[0074] S202: Determine whether the image of the number area I and the number area II contains a banknote number;
[0075] If the image contains a number, go to step S203; otherwise, go to step S204;
[0076] S203: Extract the banknote number from the image;
[0077] S204, ...
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