WO2012124843A1

WO2012124843A1 - Bill counting device for automatically distinguishing different currency denominations

Info

Publication number: WO2012124843A1
Application number: PCT/KR2011/001818
Authority: WO
Inventors: 장상환; 윤성수
Original assignee: 기산전자 주식회사
Priority date: 2011-03-16
Filing date: 2011-03-16
Publication date: 2012-09-20

Abstract

The present invention pertains to a bill counting device which may automatically recognize different currency denominations without changing settings. Particularly, when the different currency denominations are mixed, the different currency denominations may be simultaneously and automatically distinguished and counted using recognition devices for the currency denominations of individual countries without changing modes for each country but by inserting all the currencies at once. Therefore, when the different currency denominations are mixed, it is possible to alleviate the inconvenience of sorting or changing modes to count the different currencies and to save time. In addition, an integral determination device is added to the highly reliable currency recognition devices such that reliable recognition results may be obtained and bills of different countries may be processed simultaneously.

Description

Bill counting device and method for automatically identifying multi-country papers

The present invention relates to a bill counting device and method that can automatically recognize multi-country papers simultaneously without changing settings, in particular, to automatically identify and count multi-national bills without changing the country mode by using individual country paper recognition device It relates to a banknote counting device and a method thereof.

In the existing counter, the paper money classification is identified by scanning paper money by paper type, receiving a bill image including figures and characters, extracting an image of a portion representing a paper species, and digitizing an image pixel value of the portion representing a feature. After generating and storing the value, it is determined whether the inserted banknote falls within the predetermined range of the stored banknote to determine the roll type of the banknote.

In addition, in order to count multi-country grades, the country grades are judged by using the information extracted by scanning the grades of all the countries to be identified and comparing them with the category information stored in the storage device in the counting device.

However, when counting multi-country grades with existing counting devices, if the country grade to be identified is changed, the corresponding country mode should be changed. This is because there are many different kinds of different kinds of countries, and vast amounts of information are stored. Therefore, it is time to proportionally compare the number of countries to judge similarity by sequentially comparing the information of all kinds of papers stored in the banknote and memory. In addition, in the simple processing method, as the number of bills to be identified increases, the reliability rapidly decreases.

Due to the above problems, when multi-country species are mixed, counting is not possible, so it is manually sorted by country, and after pressing the country mode change button of the counter, only the bills of the selected country are counted. The above processes are for reducing the range to be compared when comparing the similarity between the inserted banknote and the stored banknote information.

Therefore, when counting multi-country grades, users have to sort the bills by country and select and execute the change mode whenever the national grades change. It takes time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for recognizing and processing a bill counter, which can simultaneously identify bills automatically inserted without classifying multi-country grades by country. In addition, it provides an analysis method and processing method for enhancing the reliability of the recognition result that can be degraded while simultaneously recognizing and processing a large amount of bill information.

The present invention, in order to solve the above problems, the banknote input device 110, the banknote transfer device 120, the image acquisition device 130, the AD converter 140, the feature extraction device which is provided in the existing banknote counting device ( 150), in addition to the memory device 170, the integrated determination device 180, n individual country class recognition devices (160 ~ 163) as many as n countries, characterized in that it is provided.

In addition, the predetermined number of n-country species to be processed in advance to store the information required for the recognition of the national species species from individual country species recognition device 1 to n; Injecting multi-country species in the stacker; Acquiring an image of the transferred banknote; converting the acquired image into one or more resolutions; Sending the converted image to the feature extraction device to construct an image of the bill into an n-dimensional vector; Transferring the vector value of the banknote from 1 to n of individual country class recognition device; Comparing the vector value of the transferred banknote with the vector value of the banknote previously stored in the storage device; Transmitting, by the individual national species class recognition device, the determination result and information on the most similar class to the integrated determination device; The integrated judging device includes a step of judging the paper type of the input bill by synthesizing each result received from the individual country paper type recognition device.

According to the present invention, when counting bills mixed with multi-country papers, the user can sort by country manually by hand or automatically identify and count multi-country papers with a single input without changing the mode setting. This is easy and convenient.

In addition, the efficiency of the device is high because it is possible for two or more users to count different national categories for a single device.

1 is a perspective view of a bill counter according to an embodiment of the present invention.

2 is a block diagram for explaining the recognition operation of the bill counter according to an embodiment of the present invention.

Figure 3 is a block diagram to help understand the operation of the bill counter according to an embodiment of the present invention.

Figure 4 is a flow chart showing the main operation of the banknote counting apparatus according to an embodiment of the present invention.

5 is a coordinate system showing three-dimensionally the feature space of a banknote of the banknote counting apparatus according to the embodiment of the present invention.

10: operation button 20: inlet

30: Stacker 40: Stacker

110: bill input device 120: bill transfer device

130: image acquisition device 140: AD converter

150: feature extraction device 160 ~ 163: individual object type recognition device

170: memory device 180: integrated judgment device

190: stacker

In order to achieve the above object, the present invention describes a bill counter and a method for automatically recognizing multi-country winding species, and also proposes an internal configuration of the bill counter for achieving the processes.

However, the term multi-national suffrage is a general term for various suffocations of many countries, and is commonly used in the industry, and it is used for concise explanation because there is no term to briefly represent or replace it.

In order to simultaneously recognize the multi-country species in the counting device without changing the mode, the present invention determines in advance n country rights to be processed (S1) and stores information necessary for the national rights class recognition device 1 to n (S2). ); Injecting multi-country winding paper into the stacker 20 (S3); Acquiring an image of the banknote transferred by the transport apparatus through the image acquisition apparatus (S4); Converting the acquired image into various resolutions (S5); Sending the converted image to the feature extraction device to construct an image of the banknote into an n-dimensional vector (S6); Transmitting the vector value of the banknote from the individual country class recognition devices 1 to n (S7); comparing the vector value of the transferred banknote with the vector value of the banknote previously stored in the storage device (S8); Transmitting, by the individual national denomination recognition device, the determination result and information on the most similar denomination to the integrated determination device (S9); Integrated determination device comprises a step (S10) of judging the paper type of the input bill by synthesizing the respective results received from each individual country species recognition device (S10).

In addition, in order to control the above steps, the counting device in the present invention is provided with a conventional banknote counting device, a banknote input device 110 for inserting a bill, a bill transfer device 120 for transporting bills and , An image acquisition device 130 for scanning bills to acquire an image, an AD converter 140 for converting an analog signal to digital, a storage device 170 for storing information of bills measured in advance, and a stacker 190 In addition, the feature extraction device 150 for extracting the features of the bill by converting the scanned image to various resolutions, and each country species recognition device having the processing and recognition information of the bill for each country (161 ~ 163) ) And an integrated determination device 180 for determining whether or not the final recognition of the winding type.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 5.

1 is a schematic cross-sectional view of a banknote counting device for automatically identifying multi-country papers according to the present invention, an input port 20 for inserting banknotes, two

stackers

30, 40 and counting banknotes loaded with counted banknotes; Operation button 10 for setting the country of the bill to be included. Further, the present invention is not limited to the counting device composed of the above two stackers, but can also be applied to the counting device composed of two or more stackers.

Figure 2 is a block diagram showing the internal configuration of the banknote counting device for automatically identifying multi-country rolls according to the present invention.

Referring to the drawings, the banknote counting device according to the present invention is a banknote input device 110, bill transfer device 120, the image acquisition device 130, AD converter 140 provided in the existing counting device And a memory extractor 170 and a stacker 190, and a feature extractor 150 for converting the scanned image into various resolutions to extract features of bills, and processing and recognizing bills for each country. It is characterized in that it comprises an individual country species recognition device (161 ~ 163) having information, and an integrated determination device 180 for determining whether or not the final recognition of the species.

The individual country class recognition devices 161 to 163 are provided as many as the number of countries to be counted, and individually store all banknote information data about the corresponding country. The unit may be understood as a meaning.

In addition, although the CIS is used as an image acquisition apparatus in the present invention, any apparatus can be used as long as it can acquire an image by scanning a bill.

Figure 3 is a block diagram showing a conceptual diagram of a bill counting device for automatically identifying multi-country rolls according to the present invention.

When the bill is put in the inlet (S1) is transported by the transport device sheet by piece to the image acquisition device. The banknotes transferred to the image acquisition apparatus acquire images of multiple resolutions in order to extract various features, and send all or part of the images to the feature extraction apparatus. From the image sent to the feature extraction apparatus, the brightness value itself or the average value and the variance value thereof modified are extracted and configured as an n-dimensional vector (S3). The vector value is sent to the national species classification apparatus, and the individual national species recognition apparatus stores the vector values of the respective national species species. Individually, by measuring the similarity between the vector value stored in each country species recognition device and the vector value of the inserted banknotes to find the most similar value to identify the species (S4). In addition, the final denomination is finally determined by comprehensively considering the recognized denomination and similarity information in the final determination device (S5).

In more detail, as shown in FIG. 4, in the setting menu of the display window 10, a country band type to be counted is input (S1), and data required for recognition of each country band is transmitted to an individual country bank recognition device (S2). ). When the above device setting process is finished, the banknotes mixed with the various national bills are put in the inlet 20 (S3). The put banknote is transferred to the image acquisition apparatus by the transport apparatus, and the image is acquired through the scanning process by the image acquisition apparatus (S4).

The image acquired from the bill is converted into various resolutions, such as 100 * 50, 50 * 25, and 12 * 25 pixels, according to an embodiment (S5), and a feature extraction apparatus for all or a part of the region which is characterized by a roll type for each resolution To send.

In the feature extraction region, an n-dimensional vector value is formed by extracting brightness values themselves and values calculated based on the transmitted image regions (S6). In this case, as values other than the brightness values, average, variance, maximum brightness values, and the most frequent brightness values are used.

The vector value is transmitted to all individual national right species recognition devices (S7).

Individual country class recognition devices are provided as many as the number of countries to be counted, and may be an apparatus or an independent processing unit. It takes 10 seconds to process 1 country, and if 10 countries of 10 countries are to be processed, it is necessary to process 10 types of 10 countries. The process takes 100 seconds. However, if you install the national denomination recognition device, only the national denominations set for each device will be processed by one country at the same time, so it takes 10 seconds, which is the same as the processing time of one country.

For the above process, each country species recognition device is set to process only one country species, and stores at least one vector value corresponding to all species of the set country.

In determining the paper type by measuring the similarity between the vector value of the inserted banknote and the vector value stored in the storage device, the method of measuring the similarity is simply to obtain the distance of two vectors or to calculate the distance using a special function calculated in advance. It measures (S8). In the case of having more than one vector, the similarity is obtained by using a representative value having an average value among them or using a function created by considering all vectors.

For example, if you predetermine a function that separates the vector values of a certain kind and the vector values of another kind, it is possible to determine whether the vector value of the inserted banknote is above or below the function, and calculate the distance to the function. The similarity can be determined.

Also, the winding type of the vector having the closest value among the vector values of all winding types is used as the recognition result of one recognition device, and the distance value is in inverse relationship with the similarity.

Similarity, recognition result, and information of the obtained paper type is transmitted to the integrated determination device (S9).

As shown in Fig. 5-a, in the case of recognizing the won, dollar, euro at the same time, for example, the vector value feature space for each bill in relation to the similarity, it is assumed that 1000 won is input of the device in charge of the won As a result, the recognition rate was 1000 won, the similarity was 80%, the dollar was 50 $, the similarity was 70%, the euro was 100 € and the similarity was 80%. The volume and similarity values of each device are slightly different, but the same volume is shown as a similar three-dimensional space point. Therefore, the final judgment is to calculate the similarity between the result of the individual state species recognition device of the inserted banknotes and the distribution of each case stored in the DB to judge it as a specific country's kind or reject it when the similarity is below the threshold value.

In FIG. 5A, the three-dimensional planar expression which distinguishes 1000 won and another winding type is calculated | required by the distribution chart obtained previously. For example, if you pre-calculate the equation of a plane perpendicular to the windings that pass between 100 euros and 1000 won, the incoming 1000 won will be above the plane and all the remaining notes will be below. Therefore, it is possible to determine where the paper type currently entered bill belongs. Of course, the equations of the plane for each of the euro and the dollar must be obtained in advance.

As another example, in the case of recognizing rubles, dollars, and euros in FIG. 5B, 50R is input, the result of the device responsible for the ruble is 50R, 90% similarity, 50 $ for the dollar device, 80 for the similarity. For example, it is assumed that the Euro device has 50 € and the similarity is 50%. As described above, if the equation of the plane perpendicular to the winding species passing between 50 rubles and 100 euros and the equation of the plane suitable for each of the remaining euros and dollars are obtained in advance, reliable recognition results can be obtained.

Therefore, by calculating the similarity of the distribution of each case stored in the memory device by calculating the similarity of the country, species, and similarity characteristic information obtained from the similarity comparison in the individual national species recognition device (S10), it is determined whether or not it is recognized as the specific species of the specific country. And if it is recognized (S11), if the transfer to the stacker 40 (S13), if it has a similarity or less than the threshold value is rejected to be transferred to the reject stacker (30) (S12). In addition, the existence of the banknotes of the

stacker

30, 40 is checked (S14), if present, and re-inserted to judge the paper type recognition (S15), and if not present, the counting device terminates the operation (S16).

However, the present invention is not limited to the above-described embodiment, but may be implemented in various forms by using a special function in determining similarity.

Claims

To recognize multi-country grades simultaneously without changing modes,

Deciding n country rights to be processed in advance and storing the information necessary for recognizing the national right species from 1 to n;

Inputting multinational banknotes into the stacker;

Acquiring an image of the banknote transferred to the transportation device through the image acquisition device;

Converting the acquired image into at least one resolution;

Sending the converted image to the feature extraction device to construct an image of the bill into an n-dimensional vector;

Transmitting the vector value of the banknote from the individual country class recognition devices 1 to n;

Measuring the similarity between the vector value of the transmitted banknote and the vector value of the banknote previously stored;

Transmitting the determination result and information on the most similar denomination to the integrated determination device; Banknote counting method comprising the step of determining the bill type of the input bill by combining the respective results received from the individual country species class recognition device in the integrated judgment device (S10).
The apparatus of claim 1, wherein the feature extracting apparatus extracts the brightness value of the portion representing the feature of the paper type or the average value and the variance value of the portion of the banknote acquired by the image capturing apparatus, and configures it as an n-dimensional vector. Banknote counting method.
The apparatus of claim 1, wherein the feature extracting apparatus extracts the brightness value of the portion representing the feature of the paper type or the average value and the variance value of the portion of the banknote acquired by the image capturing apparatus, and configures it as an n-dimensional vector. Banknote counting method.
In order to recognize the dominance of multiple countries at the same time without changing the mode,

Banknote inserting device for inserting multi-country bills,

Banknote transport device for transporting multi-country papers,

An image acquisition device that scans bills and acquires images;

AD converter that converts analog signals into digital,

Feature extraction apparatus for extracting the feature information for each volume of the scan result,

A memory for storing measured banknote information,

Individual country class recognition device that judges the most similar class based on the bill information processed for each country,

Banknote counting device characterized in that it comprises an integrated judgment device for judging the paper type of the bill entered by combining the respective results received from the individual country species class recognition device.
The bill counting device according to claim 4, wherein the individual country class recognition device is provided with n as many as n countries.