CN108171866B - Method and device for acquiring paper money pattern data, ATM and storage medium - Google Patents
Method and device for acquiring paper money pattern data, ATM and storage medium Download PDFInfo
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/20—Testing patterns thereon
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
- G07F19/20—Automatic teller machines [ATMs]
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Abstract
The embodiment of the invention discloses a method and a device for acquiring paper money pattern data, an ATM (automatic teller machine) and a storage medium, wherein the method comprises the following steps: irradiating the front side of the paper money to be detected through a light source corresponding to a first exposure condition so as to enable the front side of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the front side of the paper money to be detected; irradiating the back surface of the paper money to be detected through a light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the back surface of the paper money to be detected; the problem that the illumination pattern data that acquires when financial machines adopt the same exposure condition to shine paper currency among the prior art is incomplete can be solved, the illumination pattern data in the positive and negative two sides of paper currency can be effectively acquireed, the accuracy of acquireing paper currency illumination pattern data is improved to provide the higher information of reliability for the differentiation of paper currency true and false.
Description
Technical Field
The embodiment of the invention relates to the technical field of paper money identification, in particular to a method and a device for acquiring paper money pattern data, an ATM (automatic teller machine) and a storage medium.
Background
The financial machines utilize these sources to illuminate the note to analyze and identify note web infrared ink images, paper or ink characteristics, colored fluorescent inks and invisible special fluorescent inks, as well as multiple note web images.
When the existing financial machines irradiate the paper money through the light source to obtain the related data, the front and the back of the paper money are often irradiated by the fixed light source. For the paper money, when the front surface and the back surface of the paper money are irradiated by the light sources with the same conditions, the formed illumination patterns do not necessarily meet the requirement for acquiring the illumination pattern data, so that after the front surface and the back surface of the paper money are irradiated by the light sources to form the illumination patterns, the accuracy and the reliability of the illumination pattern data are difficult to ensure when the illumination pattern data of the front surface and the back surface of the paper money are acquired.
For example, in a bill recognition module in an existing ATM (Automatic Teller Machine), two sets of fluorescent detection devices are generally provided. The two groups of fluorescence false detection devices emit ultraviolet light by adopting a light source with fixed exposure intensity and exposure duration, irradiate the front and back surfaces of the paper money and excite reflected light, the reflected light is respectively received by the reflection receiving devices arranged above and below the paper money channel, received optical signals are converted into electric signals and then are output to the central control circuit, and the central control circuit realizes the simultaneous identification of the front surface and the back surface of the paper money according to the two groups of received electric signals. However, the front and back sides of the existing paper money have multiple fluorescent patterns, and the fluorescent patterns at different positions have different brightness under the irradiation of the light source with the same exposure intensity and exposure time. If the light source with fixed exposure intensity and exposure duration is too strong, the overexposure phenomenon of part of the fluorescent patterns can be caused, and further, all useful information of the fluorescent patterns can not be acquired. If the light source with fixed exposure intensity and exposure duration is weak, the gray value of the partial fluorescent pattern is close to the background pattern around the partial fluorescent pattern, so that it is difficult to effectively extract the data of the partial fluorescent pattern. Therefore, the fluorescence anti-counterfeiting device of the paper money identification module in the conventional financial machine tool cannot accurately and effectively acquire the front and back fluorescence pattern data of the paper money.
Disclosure of Invention
The embodiment of the invention provides a method and a device for acquiring paper money pattern data, an ATM (automatic teller machine) and a storage medium, which can effectively acquire illumination pattern data in the front and back surfaces of paper money and improve the accuracy of acquiring the illumination pattern data of the paper money, thereby providing information with higher reliability for identifying the authenticity of the paper money.
In a first aspect, an embodiment of the present invention provides a method for acquiring banknote pattern data, including:
irradiating the front side of the paper money to be detected through a light source corresponding to a first exposure condition so as to enable the front side of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the front side of the paper money to be detected;
irradiating the back surface of the paper money to be detected through a light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the back surface of the paper money to be detected;
wherein the first exposure condition is different from the second exposure condition.
In a second aspect, an embodiment of the present invention further provides an apparatus for acquiring banknote pattern data, including:
the first data acquisition module is used for irradiating the front side of the paper money to be detected through a light source corresponding to a first exposure condition so as to enable the front side of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the front side of the paper money to be detected;
the second data acquisition module is used for irradiating the back surface of the paper money to be detected through a light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present an illumination pattern and acquire illumination pattern data of the back surface of the paper money to be detected;
wherein the first exposure condition is different from the second exposure condition.
In a third aspect, an embodiment of the present invention further provides an ATM, including:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement any of the above-mentioned banknote pattern data acquisition methods.
In a fourth aspect, an embodiment of the present invention further provides a computer storage medium, on which a computer program is stored, which when executed by a processor, implements any of the above-mentioned methods for acquiring banknote pattern data.
The embodiment of the invention adopts different exposure conditions to irradiate the front side and the back side of the paper money to be detected so as to obtain the illumination pattern data of the front side and the back side of the paper money to be detected, can solve the problem that the illumination pattern data obtained when the financial machine and tool in the prior art irradiates the paper money by adopting the light source corresponding to the same exposure condition is not complete, can effectively obtain the illumination pattern data of the front side and the back side of the paper money, improves the accuracy of obtaining the illumination pattern data of the paper money, and thus provides higher reliability information for the identification of the authenticity of the paper money.
Drawings
Fig. 1a is a flowchart of a method for acquiring banknote pattern data according to an embodiment of the present invention;
FIG. 1b is a schematic diagram of the front fluorescence effect of a 100-element RMB according to an embodiment of the present invention;
FIG. 1c is a schematic diagram of the reverse fluorescence effect of a 100 Yuan RMB according to an embodiment of the present invention;
fig. 2 is a flowchart of a banknote pattern data acquisition method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a banknote pattern data acquisition method according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of an apparatus for acquiring banknote pattern data according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an ATM according to a fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example one
Fig. 1a is a flowchart of a method for acquiring banknote pattern data according to an embodiment of the present invention, and fig. 1b is a schematic diagram of a front fluorescence effect of a 100-yuan RMB according to an embodiment of the present invention; FIG. 1c is a schematic diagram of the reverse fluorescence effect of a 100 Yuan RMB according to an embodiment of the present invention; the present embodiment is applicable to the case of illuminating a banknote to be inspected with different exposure conditions, and the method can be implemented by means of a banknote pattern data acquisition device, which can be implemented in software and/or hardware, and can be generally integrated in an ATM, and comprises the following operations:
s110, irradiating the front face of the paper money to be detected through a light source corresponding to a first exposure condition to enable the front face of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the front face of the paper money to be detected.
The light source can be an ultraviolet light source, an infrared light source, a red, green and blue L ED tricolor light source, and the like, and can also be other light sources which can be used for detecting paper currency, and the embodiment of the invention does not limit the light sources.
In an alternative embodiment of the present invention, the first exposure condition includes: the product of the first exposure time length and the first exposure intensity is in a first preset range.
The exposure duration refers to the duration of irradiation of the paper money to be detected by the light source, and the exposure intensity refers to the light intensity of irradiation of the paper money to be detected by the light source. Accordingly, the first preset range needs to be set according to actual requirements.
In the embodiment of the invention, the paper money to be detected can form different illumination patterns under the illumination of different light sources. For example, as shown in fig. 1b, when the front surface of the RMB with a 100-element face value is irradiated by an ultraviolet light source, the 100 numbers in the dashed box generate a fluorescence effect and form a corresponding fluorescence pattern. It should be noted that fig. 1b only exemplarily shows the fluorescent pattern and the face value of the front face of the rmb with 100 yuan of face value under the irradiation of the ultraviolet light source, and does not display other information of the rmb with 100 yuan of face value. Similarly, the RMB with the face value of 100 RMB also forms a corresponding infrared image under the irradiation of the infrared light source. When the illumination pattern appears on the front surface of the paper money to be detected, the light pattern data can be collected and analyzed through the sensor.
S120, irradiating the back surface of the paper money to be detected through a light source corresponding to a second exposure condition so that the back surface of the paper money to be detected presents an illumination pattern, and acquiring illumination pattern data of the back surface of the paper money to be detected; wherein the first exposure condition is different from the second exposure condition.
In an alternative embodiment of the present invention, the second exposure condition includes: the product of the second exposure time length and the second exposure intensity is in a second preset range.
The second predetermined range is set according to actual requirements.
In the embodiment of the present invention, optionally, the light source corresponding to the first exposure condition and the light source corresponding to the second exposure condition are two different light sources.
In an alternative embodiment of the present invention, the first exposure condition is different from the second exposure condition, and comprises: the product of the first exposure duration and the first exposure intensity is not equal to the product of the second exposure duration and the second exposure intensity.
When the light source corresponding to the first exposure condition and the light source corresponding to the second exposure condition are set, the illumination pattern brightness information of the front side and the back side of the banknote to be detected needs to be considered. For example, when the brightness of the illumination pattern on the front side of the paper money to be detected is higher than that of the illumination pattern on the back side of the paper money to be detected, the maximum value in the first preset range is smaller than the minimum value in the second preset range; when the brightness of the illumination pattern on the front side of the paper money to be detected is lower than that of the illumination pattern on the back side of the paper money to be detected, the minimum value in the first preset range is larger than the maximum value in the second preset range.
Specifically, the exposure of the paper money to be detected by the light source mainly relates to two factors of exposure time and exposure intensity, and in the actual operation process, the product of the two factors influences the exposure effect of the paper money to be detected. For example, the first exposure duration and the second exposure duration are the same, but the first exposure intensity and the second exposure intensity are different, so that the two exposure effects are different correspondingly. Similarly, the first exposure duration is different from the second exposure duration, but the first exposure intensity is the same as the second exposure intensity, so that the two corresponding exposure effects are different. When the first exposure duration is different from the second exposure duration and the first exposure intensity is different from the second exposure intensity, the two corresponding exposure effects may be the same or different, that is, when the product of the first exposure duration and the first exposure intensity is the same as the product of the second exposure duration and the second exposure intensity, the two corresponding exposure effects are the same.
Note that, the light patterns formed by the front and back surfaces of the banknotes with different denominations and denominations under the irradiation of the light source are also different. Taking an ultraviolet light source as an example, as shown in fig. 1c, under the irradiation of the ultraviolet light source, the patterns (the closed figure connecting the roof and two vertexes of the hall of the renminbi) in the dashed frame of the reverse side of the rmbi with a face value of 100 yuan will generate a fluorescence effect, and form corresponding fluorescence patterns. It should be noted that fig. 1c also only exemplarily shows the fluorescent pattern and the face value of the reverse surface of the rmb with a face value of 100 yuan under the irradiation of the ultraviolet light source, and does not display other information of the rmb with a face value of 100 yuan. Compared with the fluorescent pattern on the front surface of the RMB with the face value of 100 yuan, under the irradiation of the ultraviolet light source corresponding to the same exposure condition, the fluorescent pattern on the back surface has a larger distribution area and relatively weaker brightness, and the specific patterns are different. If the same exposure conditions are adopted for the front surface and the back surface of the RMB to be detected with the surface value of 100 yuan, when the exposure conditions meet the exposure requirements of the front surface fluorescent patterns, the brightness of the back surface fluorescent patterns is lower, and the gray value of part of the back surface fluorescent patterns is close to that of the background patterns, so that the problem that the data of the back surface fluorescent patterns are not easy to extract is caused. When the exposure condition meets the exposure requirement of the fluorescent pattern on the back side, the brightness value of the fluorescent pattern on the front side is higher, and at the moment, the overexposure phenomenon occurs on part of the fluorescent pattern on the front side, so that the problem that useful information is lost in the data of the fluorescent pattern on the front side is caused.
In the embodiment of the invention, the light sources corresponding to different exposure conditions are adopted to respectively irradiate the front surface and the back surface of the paper currency to be detected in consideration of the difference of the brightness and the distribution characteristics of the illumination patterns generated by the front surface and the back surface of the paper currency under the condition of light source irradiation, so that the suitable exposure conditions can be provided for the front surface and the back surface of the paper currency to be detected, and the illumination pattern data of the front surface and the back surface of the paper currency to be detected can be respectively and effectively extracted.
In an embodiment of the present invention, optionally, the method for acquiring banknote pattern data may further include: and judging the authenticity of the paper money to be detected according to the illumination pattern data of the front side of the paper money to be detected and/or the illumination pattern data of the back side of the paper money to be detected.
After the front and the back of the paper money to be detected are exposed by the light sources corresponding to different exposure conditions, the authenticity of the paper money to be detected can be identified by acquiring the illumination pattern data of the front and the back of the paper money to be detected. It should be noted that the identification can be performed only according to the illumination pattern data of the front side of the paper money to be detected or the illumination pattern data of the back side of the paper money to be detected, or can be performed according to the illumination pattern data of the front side and the illumination pattern data of the back side of the paper money to be detected.
The embodiment of the invention adopts different exposure conditions to irradiate the front side and the back side of the paper money to be detected so as to obtain the illumination pattern data of the front side and the back side of the paper money to be detected, can solve the problem that the illumination pattern data obtained when the same exposure condition is adopted to irradiate the paper money by a financial machine in the prior art is incomplete, can effectively obtain the illumination pattern data of the front side and the back side of the paper money, improves the accuracy of obtaining the illumination pattern data of the paper money, and thus provides higher-reliability information for the identification of the authenticity of the paper money.
Example two
Fig. 2 is a flowchart of a banknote pattern data acquiring method according to a second embodiment of the present invention, and as shown in fig. 2, the method includes the following operations:
s210, irradiating the paper money to be detected through an ultraviolet light source corresponding to a preset exposure condition, scanning the paper money to be detected through a first sensor, and sequentially collecting data of each scanning line of the paper money to be detected.
The preset exposure condition may be a first exposure condition or a second exposure condition, or may adopt other set exposure conditions different from the first exposure condition and the second exposure condition, which is not limited in the embodiment of the present invention. The first sensor may be a line sensor for scanning each line of data of the banknote to be detected.
For example, the banknote recognition module in the ATM is used to expose the front and back of the banknote to be detected through the ultraviolet light sources corresponding to different exposure conditions. Before the paper money to be detected enters the paper money recognition module, if the paper money recognition module does not acquire the information of the front side and the back side of the paper money to be detected, the paper money to be detected is irradiated by an ultraviolet light source corresponding to a preset exposure condition, the paper money to be detected is recognized through data scanned by a first sensor in the paper money recognition module, and data of each scanning line of the paper money to be detected is collected in sequence, so that the problems of overexposure or loss of useful information caused by inappropriate exposure conditions can be solved, and the real-time recognition of the front side or the back side of the paper money is realized according to the data obtained by scanning of the sensor in the paper money recognition.
S220, when it is detected that the fluorescence pattern data included in one scanning line data of the paper money to be detected accords with a first judgment condition, determining that the surface of the paper money to be detected, which is scanned by the first sensor, is the front surface of the paper money to be detected; and the first judgment condition is determined according to the distribution information and the brightness information of the front fluorescent pattern of the paper money to be detected.
The first judgment condition is mainly designed adaptively according to the distribution information and the brightness information of the front fluorescent pattern of the paper money to be detected. The first judgment condition is designed adaptively mainly according to the distribution information and the brightness information of the front fluorescent pattern of the paper money to be detected. Note that the banknote faces the ATM in four directions, i.e., front-side forward direction, front-side reverse direction, back-side forward direction, and back-side reverse direction. That is, the front face of the bill shares two faces of the front face forward direction and the front face reverse direction, but in either of these faces, the distribution information and the brightness information of the fluorescent pattern are fixed. Therefore, the first few rows of data where the four facing fluorescent patterns are located can be stored in the banknote recognition module of the ATM to recognize the facing of the banknote to be detected based on the stored data.
Specifically, the front direction of the RMB with 100 yuan of face value irradiated by the ultraviolet light source is taken as an example for explanation. The first sensor starts scanning from the first line data of the front face of the RMB with the face value of 100 RMB, when the first sensor scans the first line data of the fluorescent pattern '100', the front face data of the RMB with the face value of 100 RMB is identified according to the distribution information and the brightness information of the line data (such as 65 fluorescent dots with larger brightness), and then the face of the paper money to be detected, which is scanned by the first sensor, is determined as the front face of the paper money to be detected. It should be noted that when the data of the row where the front-side forward and front-side reverse fluorescent patterns of the banknote to be detected are the same, the determination of the front side of the banknote to be detected is not affected, as long as the data of the row where the front-side forward and front-side reverse fluorescent patterns are located is different from the data of the row where the back-side fluorescent patterns are located.
In the embodiment of the invention, the distribution information and the brightness information of the fluorescent patterns on the front surface (including the front surface forward direction and the front surface reverse direction) of the paper money have corresponding characteristics. Therefore, the illumination pattern data included in one scanning line data of the sensor and the pre-stored distribution information and brightness information of the fluorescence patterns on the front side of the paper money are matched, and the preset exposure condition can be adjusted to the proper first exposure condition in real time before all the fluorescence patterns on the front side of the paper money to be detected are scanned, so that the front side of the paper money to be detected is effectively identified, and the fluorescence pattern data on the front side of the paper money to be detected is accurately acquired.
And S230, irradiating the front side of the paper money to be detected through an ultraviolet light source corresponding to a first exposure condition so as to enable the front side of the paper money to be detected to present a fluorescent pattern, and acquiring fluorescent pattern data of the front side of the paper money to be detected.
In the embodiment of the invention, after the front side of the paper money to be detected is identified through the first sensor, the front side of the paper money to be detected is irradiated through the ultraviolet light source corresponding to the first exposure condition, and the fluorescence pattern data of the front side of the paper money to be detected is obtained.
S240, irradiating the paper money to be detected through the ultraviolet light source corresponding to the preset exposure condition, scanning the paper money to be detected through a second sensor, and sequentially collecting data of each scanning line of the paper money to be detected.
The second sensor may be a linear sensor having the same properties as the first sensor.
S250, when it is detected that the fluorescence pattern data included in one scanning line data of the paper money to be detected accords with a second judgment condition, determining that the surface of the paper money to be detected, which is scanned by the second sensor, is the reverse surface of the paper money to be detected; and determining the second judgment condition according to the distribution information and the brightness information of the fluorescent patterns on the back surface of the paper money to be detected.
In the embodiment of the present invention, optionally, when the ultraviolet light source is used to irradiate the paper money to be detected, the second judgment condition is designed adaptively mainly according to the distribution information and the brightness information of the fluorescent pattern on the reverse side of the paper money to be detected. For the reverse side of the note there are two faces, a reverse-side-forward and a reverse-side-reverse.
Specifically, the reverse and forward directions of the RMB with 100 yuan of face value irradiated by the ultraviolet light source are taken as an example for explanation. The first sensor starts scanning from the first line of data of the reverse side and the forward direction of the RMB with the face value of 100 RMB, when the first sensor scans the first line of data of the fluorescent pattern, namely the roof of the Renminbi hall, the data of the reverse side and the forward direction of the RMB with the face value of 100 RMB in the line of data are identified according to the distribution information and the brightness information of the line of data, and then the side, scanned by the first sensor, of the paper money to be detected is determined to be the reverse side of the paper money to be detected. It should be noted that when the data of the row where the reverse fluorescent patterns on the reverse side of the paper money to be detected are the same, the determination of the reverse side of the paper money to be detected is not affected, as long as the data of the row where the reverse fluorescent patterns on the reverse side are located is different from the data of the row where the front fluorescent patterns are located.
In the embodiment of the invention, the distribution information and the brightness information of the fluorescent patterns on the reverse side (including the reverse side and the reverse side) of the paper money have corresponding characteristics. Therefore, the fluorescent pattern data included in one scanning line data of the sensor and the pre-stored distribution information and brightness information of the fluorescent patterns on the back side of the paper money are matched, and the preset exposure condition can be adjusted to the appropriate second exposure condition in real time before all the fluorescent patterns on the back side of the paper money to be detected are scanned, so that the back side of the paper money to be detected is effectively identified, and the fluorescent pattern data on the back side of the paper money to be detected is accurately acquired.
S260, irradiating the back surface of the paper money to be detected through an ultraviolet light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present a fluorescent pattern, and acquiring fluorescent pattern data of the back surface of the paper money to be detected.
In the embodiment of the invention, after the reverse side of the paper money to be detected is identified through the second sensor, the reverse side of the paper money to be detected is irradiated through the light source corresponding to the second exposure condition, and the fluorescence pattern data of the reverse side of the paper money to be detected is obtained.
It should be noted that, in the embodiment of the present invention, the method for acquiring the banknote pattern data is exemplarily performed by combining S210 to S260 as one embodiment, but the embodiment is only one example of the present invention, and the method for acquiring the banknote pattern data may also be performed by combining S230 and S260 as one embodiment.
It should be noted that the embodiment of the present invention does not limit the order of S210-S230 and S240-S260, that is, S210-S230 and S240-S260 may be performed synchronously. In addition, an ultraviolet light source can be adopted, and the voltage or the current of the same ultraviolet light source can be changed when the front side and the back side of the paper money to be detected are irradiated, so that the ultraviolet light sources corresponding to the first exposure condition and the second exposure condition are formed to respectively irradiate the front side and the back side of the paper money to be detected. When one ultraviolet light is used for irradiating the paper money to be detected, the ultraviolet light source corresponding to the first exposure condition can be used for irradiating the front side of the paper money to be detected, and then the voltage or the current of the light source is changed to ensure that the ultraviolet light source corresponding to the second exposure condition is provided for irradiating the back side of the paper money to be detected. Or, the reverse side of the paper money to be detected can be irradiated by adopting the ultraviolet light source corresponding to the second exposure condition, and then the voltage or the current of the light source is changed to ensure that the ultraviolet light source corresponding to the first exposure condition is provided to irradiate the front side of the paper money to be detected.
EXAMPLE III
Fig. 3 is a flowchart of a banknote pattern data acquiring method according to a third embodiment of the present invention, and as shown in fig. 3, the method includes the following operations:
and S310, collecting point signals corresponding to the paper money to be detected by using a transmission channel sensor.
The transmission channel sensor can be a point sensor distributed in an ATM paper money transmission channel, the transmission channel sensor comprises at least one group of sensor nodes of the same level which are positioned on the same straight line vertical to a paper money walking path, and the transmission channel sensor is positioned in front of a paper money identification module communicated with the paper money walking path. In the process of paper money moving, a series of point signals corresponding to the paper money passing through the sensor can be collected through the transmission channel sensor along with the moving of the paper money. Alternatively, the point signal may be a reflected signal or a transmitted signal. Specifically, the types of point signals acquired by different acquisition modes are different, for example, if the sensor and the detection light source are arranged on the same side of the plane of the banknote, the point signal acquired by the sensor and corresponding to the banknote to be detected is a reflected signal; if the sensor and the detection light source are respectively arranged on different sides of the plane of the paper money, point signals corresponding to the paper money to be detected and collected by the sensor are transmission signals.
In the embodiment of the invention, optionally, before the front and the back of the paper money to be detected are exposed, the front and the back of the paper money to be detected can be identified by using the transmission channel sensor according to the point signal corresponding to the paper money to be detected. After the paper money to be detected is identified through the transmission channel sensor, the front side and the back side of the paper money to be detected are judged according to scanned data after the paper money to be detected is scanned through the first sensor and the second sensor, and before the paper money to be detected is scanned through the first sensor and the second sensor, the front side and the back side of the paper money to be detected are not irradiated by the ultraviolet light source corresponding to the preset exposure condition at the same time, but the front side of the paper money to be detected is directly irradiated by the ultraviolet light source corresponding to the first exposure condition, and the back side of the paper money to be detected is irradiated by the ultraviolet light source corresponding to the second exposure condition.
And S320, inputting the signal value sequence corresponding to the point signal as a feature vector into a trained recognition model for recognition so as to recognize the orientation of the paper money to be detected.
The feature vector may be composed of signal values corresponding to the point signals according to a preset rule, and may be a one-dimensional vector or a multi-dimensional vector. Specifically, the signal value sequence corresponding to the point signal can be input into the recognition model as a feature vector, so as to recognize the paper money to be detected. The signal value sequence may be a sequence in which voltage values corresponding to the point signals are sequentially arranged in time after the point signals collected in time series are sequentially arranged in time. The recognition model is a trained standard recognition model of the paper money, the input end of the recognition model is used for inputting the characteristic vector, and correspondingly, the output end can output the paper money information corresponding to the characteristic vector. The paper money faces include four faces of a front face forward direction, a front face reverse direction, a back face forward direction and a back face reverse direction.
Correspondingly, the signal value sequence corresponding to the point signal is used as a feature vector and is input into the trained recognition model for recognition, and the orientation information of the paper money to be detected is obtained.
S330, irradiating the front face of the paper money to be detected through an ultraviolet light source corresponding to a first exposure condition to enable the front face of the paper money to be detected to present a fluorescent pattern, and acquiring fluorescent pattern data of the front face of the paper money to be detected.
S340, irradiating the back surface of the paper money to be detected through an ultraviolet light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present a fluorescent pattern, and acquiring fluorescent pattern data of the back surface of the paper money to be detected.
In the embodiment of the invention, the face of the paper money to be detected is identified through the point signals acquired by the transmission channel sensor, so that the front side and the back side of the paper money to be detected can be identified before the paper money to be detected is irradiated by adopting the ultraviolet light sources corresponding to different exposure conditions. Therefore, ultraviolet light sources corresponding to different exposure conditions can be directly adopted to irradiate the paper money to be detected and obtain corresponding fluorescent pattern data, so that the obtaining speed of the fluorescent pattern data is improved, and the identification time of the paper money to be detected is shortened.
Example four
Fig. 4 is a schematic diagram of an apparatus for acquiring banknote pattern data according to a fourth embodiment of the present invention, which is capable of executing a method for acquiring banknote pattern data according to any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.
The device comprises:
the first data acquisition module 410 is configured to irradiate the front side of the banknote to be detected through a light source corresponding to a first exposure condition, so that the front side of the banknote to be detected presents an illumination pattern, and acquire illumination pattern data of the front side of the banknote to be detected;
the second data acquisition module 420 is configured to irradiate the back surface of the banknote to be detected through a light source corresponding to a second exposure condition, so that the back surface of the banknote to be detected presents an illumination pattern, and acquire illumination pattern data of the back surface of the banknote to be detected;
wherein the first exposure condition is different from the second exposure condition.
The embodiment of the invention adopts different exposure conditions to irradiate the front side and the back side of the paper money to be detected so as to obtain the illumination pattern data of the front side and the back side of the paper money to be detected, can solve the problem that the illumination pattern data obtained when the financial machine and tool in the prior art irradiates the paper money by adopting the light source corresponding to the same exposure condition is not complete, can effectively obtain the illumination pattern data of the front side and the back side of the paper money, improves the accuracy of obtaining the illumination pattern data of the paper money, and thus provides higher reliability information for the identification of the authenticity of the paper money.
Optionally, the first data obtaining module 410 is further configured to irradiate the front side of the banknote to be detected through an ultraviolet light source corresponding to a first exposure condition, so that the front side of the banknote to be detected presents a fluorescent pattern, and obtain fluorescent pattern data of the front side of the banknote to be detected; correspondingly, the second data obtaining module 420 is further configured to irradiate the back surface of the banknote to be detected through the ultraviolet light source corresponding to the second exposure condition, so that the back surface of the banknote to be detected presents a fluorescent pattern, and obtain fluorescent pattern data of the back surface of the banknote to be detected.
Optionally, the first exposure condition includes: the product of the first exposure duration and the first exposure intensity is within a first preset range; the second exposure condition includes: the product of the second exposure duration and the second exposure intensity is within a second preset range; the first exposure condition is different from the second exposure condition, and comprises the following steps: the product of the first exposure duration and the first exposure intensity is not equal to the product of the second exposure duration and the second exposure intensity.
Optionally, the device further includes a banknote front recognition module 430, configured to irradiate the banknote to be detected through an ultraviolet light source corresponding to a preset exposure condition, scan the banknote to be detected through a first sensor, and sequentially acquire data of each scanning line of the banknote to be detected; when detecting that the fluorescence pattern data included in one scanning line data of the paper money to be detected accords with a first judgment condition, determining that one surface of the paper money to be detected, which is scanned by the first sensor, is the front surface of the paper money to be detected; and the first judgment condition is determined according to the distribution information and the brightness information of the front fluorescent pattern of the paper money to be detected.
Optionally, the device further includes a banknote reverse side recognition module 440, configured to irradiate the banknote to be detected through the ultraviolet light source corresponding to the preset exposure condition, scan the banknote to be detected through a second sensor, and sequentially acquire data of each scanning line of the banknote to be detected; when detecting that the fluorescence pattern data included in one scanning line data of the paper money to be detected accords with a second judgment condition, determining that one surface of the paper money to be detected, which is scanned by the second sensor, is the reverse surface of the paper money to be detected; and determining the second judgment condition according to the distribution information and the brightness information of the fluorescent patterns on the back surface of the paper money to be detected.
Optionally, the apparatus further includes a banknote information recognition module 450, configured to acquire, by using a transmission channel sensor, a point signal corresponding to the banknote to be detected; and inputting a signal value sequence corresponding to the point signal as a feature vector into a trained recognition model for recognition so as to recognize the orientation of the paper money to be detected.
Optionally, the apparatus further includes a banknote identifying module 460, configured to determine authenticity of the banknote to be detected according to the illumination pattern data of the front side of the banknote to be detected and/or the illumination pattern data of the back side of the banknote to be detected.
The device for acquiring the paper money pattern data can execute the method for acquiring the paper money pattern data provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For details of the technology not described in detail in this embodiment, reference may be made to the method for acquiring banknote pattern data according to any embodiment of the present invention.
EXAMPLE five
Fig. 5 is a schematic structural diagram of an ATM according to a fifth embodiment of the present invention. FIG. 5 illustrates a block diagram of an ATM512 suitable for use in implementing embodiments of the present invention. The ATM512 shown in fig. 5 is an example only and should not impose any limitations on the functionality or scope of use of embodiments of the present invention.
As shown in FIG. 5, ATM512 is in the form of a general purpose computing device. Components of the ATM512 may include, but are not limited to: one or more processors 516, a storage device 528, and a bus 518 that couples the various system components including the storage device 528 and the processors 516.
ATM512 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by ATM512 and includes both volatile and nonvolatile media, removable and non-removable media.
ATM512 may also communicate with one or more external devices 514 (e.g., keyboard, pointing device, camera, display 524, etc.), and may also communicate with one or more devices that enable a user to interact with the ATM512, and/or with any devices (e.g., Network card, modem, etc.) that enable the ATM512 to communicate with one or more other computing devices.
The processor 516 executes various functional applications and data processing by running a program stored in the storage device 528, for example, to implement the acquisition method of the banknote pattern data provided by the above-described embodiment of the present invention.
Through ATM shine with the reverse side of treating the front of examining paper currency and adopting different exposure condition to obtain and wait to examine the illumination pattern data of paper currency front and reverse side, can solve the incomplete problem of the illumination pattern data that acquires when financial machines and tools adopt the light source that the same exposure condition corresponds to shine paper currency among the prior art, can effectively acquire the illumination pattern data in the paper currency front and back two sides, improve the accuracy of acquireing paper currency illumination pattern data, thereby provide the information that the reliability is higher for the differentiation of paper currency true and false.
EXAMPLE six
An embodiment of the present invention further provides a computer storage medium storing a computer program, which is used to execute the method for acquiring banknote pattern data according to any one of the above-described embodiments of the present invention when the computer program is executed by a computer processor.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM) or flash Memory), an optical fiber, a portable compact disc Read Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including AN object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A method for acquiring banknote pattern data, comprising:
irradiating the front face of the paper money to be detected through a light source corresponding to a first exposure condition so as to enable the front face of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the front face of the paper money to be detected, wherein the first exposure condition comprises the following steps: the product of the first exposure duration and the first exposure intensity is within a first preset range;
irradiating the back surface of the paper money to be detected through a light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the back surface of the paper money to be detected, wherein the second exposure condition comprises the following steps: the product of the second exposure duration and the second exposure intensity is within a second preset range;
wherein the first exposure condition is different from the second exposure condition, including: the product of the first exposure duration and the first exposure intensity is not equal to the product of the second exposure duration and the second exposure intensity.
2. The method according to claim 1, wherein the illuminating the front side of the banknote to be detected by the light source corresponding to the first exposure condition so as to make the front side of the banknote to be detected present the illumination pattern, and acquiring the illumination pattern data of the front side of the banknote to be detected comprises:
irradiating the front side of the paper money to be detected through an ultraviolet light source corresponding to a first exposure condition so as to enable the front side of the paper money to be detected to present a fluorescent pattern, and acquiring fluorescent pattern data of the front side of the paper money to be detected;
correspondingly, the irradiating the back surface of the paper money to be detected by the light source corresponding to the second exposure condition to make the back surface of the paper money to be detected present an illumination pattern, and acquiring the illumination pattern data of the back surface of the paper money to be detected includes:
and irradiating the back surface of the paper money to be detected by an ultraviolet light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present a fluorescent pattern, and acquiring fluorescent pattern data of the back surface of the paper money to be detected.
3. The method according to claim 2, wherein before the illuminating the front side of the banknote to be inspected by the uv light source corresponding to the first exposure condition, further comprising:
irradiating the paper money to be detected by an ultraviolet light source corresponding to a preset exposure condition, scanning the paper money to be detected by a first sensor, and sequentially collecting data of each scanning line of the paper money to be detected;
when detecting that the fluorescence pattern data included in one scanning line data of the paper money to be detected accords with a first judgment condition, determining that one surface of the paper money to be detected, which is scanned by the first sensor, is the front surface of the paper money to be detected; and the first judgment condition is determined according to the distribution information and the brightness information of the front fluorescent pattern of the paper money to be detected.
4. The method according to claim 3, further comprising, before irradiating the reverse side of the banknote to be inspected with ultraviolet light corresponding to the second exposure condition:
irradiating the paper money to be detected through an ultraviolet light source corresponding to the preset exposure condition, scanning the paper money to be detected through a second sensor, and sequentially collecting data of each scanning line of the paper money to be detected;
when detecting that the fluorescence pattern data included in one scanning line data of the paper money to be detected accords with a second judgment condition, determining that one surface of the paper money to be detected, which is scanned by the second sensor, is the reverse surface of the paper money to be detected; and determining the second judgment condition according to the distribution information and the brightness information of the fluorescent patterns on the back surface of the paper money to be detected.
5. The method according to claim 2, wherein before acquiring the fluorescence pattern data of the front side of the paper money to be detected or before acquiring the fluorescence pattern data of the back side of the paper money to be detected, the method further comprises:
collecting point signals corresponding to the paper money to be detected by using a transmission channel sensor;
and inputting a signal value sequence corresponding to the point signal as a feature vector into a trained recognition model for recognition so as to recognize the orientation of the paper money to be detected.
6. The method of any of claims 1-5, further comprising:
and judging the authenticity of the paper money to be detected according to the illumination pattern data of the front side of the paper money to be detected and/or the illumination pattern data of the back side of the paper money to be detected.
7. An acquisition apparatus of bill pattern data, characterized by comprising:
the first data acquisition module is used for irradiating the front face of the paper money to be detected through a light source corresponding to a first exposure condition so as to enable the front face of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the front face of the paper money to be detected, wherein the first exposure condition comprises: the product of the first exposure duration and the first exposure intensity is within a first preset range;
the second data acquisition module is used for irradiating the back surface of the paper money to be detected through a light source corresponding to a second exposure condition so as to enable the back surface of the paper money to be detected to present an illumination pattern, and acquiring illumination pattern data of the back surface of the paper money to be detected, wherein the second exposure condition comprises: the product of the second exposure duration and the second exposure intensity is within a second preset range;
wherein the first exposure condition is different from the second exposure condition, including: the product of the first exposure duration and the first exposure intensity is not equal to the product of the second exposure duration and the second exposure intensity.
8. An Automated Teller Machine (ATM), the ATM comprising:
one or more processors;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method of acquiring banknote pattern data according to any one of claims 1 to 6.
9. A computer storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the method of acquiring banknote pattern data according to any one of claims 1 to 6.
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