CN111275879A - Currency identification method, device and mobile terminal - Google Patents

Abstract

The application is applicable to the technical field of currency identification, and provides a currency identification method, a device and a mobile terminal, which comprise: if a camera of the mobile terminal is started and a currency detection instruction is received, acquiring image information corresponding to currency to be detected in front of the camera, wherein the image information comprises depth information and color information; comparing the image information of the currency to be detected with the image information of standard currency; and determining whether the currency to be detected is true currency or not according to the comparison result. The method can improve the identification accuracy of the currency.

Description

Currency identification method, device and mobile terminal

technical field

The present application belongs to the technical field of currency identification, and in particular, relates to a currency identification method, device, mobile terminal and computer-readable storage medium.

Background technique

At present, various technologies are developing rapidly, for example, the technology of making counterfeit money is also developing rapidly. Counterfeit currency refers to the currency made by various means imitating the pattern and color of the real currency.

At present, counterfeit money is mainly identified by a money printing machine, but because the money printing machine has a certain volume, it is not convenient to carry around, so it is not convenient for users to identify the authenticity of the money in time.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a currency identification method, a device, a mobile terminal, and a computer-readable storage medium, which can solve the problem that the existing method is difficult to identify the authenticity of the currency in time.

In a first aspect, an embodiment of the present application provides a currency identification method, which is applied to a mobile terminal, and the currency identification method includes:

If the camera of the mobile terminal is activated and a currency detection instruction is received, image information corresponding to the currency to be detected in front of the camera is acquired, and the image information includes depth of field information and color information;

comparing the image information of the currency to be tested with the image information of the standard currency;

According to the comparison result, it is determined whether the currency to be tested is the real currency.

In a second aspect, an embodiment of the present application provides a currency identification device, which is applied to a mobile terminal, including:

an image information acquisition unit, configured to acquire image information corresponding to the currency to be detected in front of the camera if the camera of the mobile terminal is activated and receives a currency detection instruction, the image information includes depth of field information and color information;

an image information comparison unit for comparing the image information of the currency to be tested with the image information of the standard currency;

A currency identification unit, configured to determine whether the currency to be tested is real currency according to the comparison result.

In a third aspect, an embodiment of the present application provides a mobile terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, when the processor executes the computer program A method as described in the first aspect is implemented.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to the first aspect is implemented.

In a fifth aspect, an embodiment of the present application provides a computer program product, which enables a mobile terminal to execute the method described in the first aspect when the computer program product runs on a terminal device.

The beneficial effects that the embodiments of the present application have compared with the prior art are:

Since the user himself has purchased the mobile terminal and often carries the mobile terminal, identifying the authenticity of the currency through the mobile terminal can improve the timeliness of identification. Moreover, since the acquired image information includes depth of field information and color information, determining whether the currency is a real currency can improve the accuracy of the judgment result according to the results of comparing the depth information and color information of the currency with the depth information and color information of the standard currency, respectively. sex.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the embodiments or the prior art.

1 is a schematic flowchart of a currency identification method provided by an embodiment of the present application;

2 is a schematic diagram of 100 RMB provided by an embodiment of the present application;

3 is a schematic structural diagram of a currency identification device provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a mobile terminal provided by an embodiment of the present application.

Detailed ways

In the following description, for the purpose of illustration rather than limitation, specific details such as a specific system structure and technology are set forth in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It is to be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described feature, integer, step, operation, element and/or component, but does not exclude one or more other The presence or addition of features, integers, steps, operations, elements, components and/or sets thereof.

It will also be understood that, as used in this specification and the appended claims, the term "and/or" refers to and including any and all possible combinations of one or more of the associated listed items.

As used in the specification of this application and the appended claims, the term "if" may be contextually interpreted as "when" or "once" or "in response to determining" or "in response to detecting ". Similarly, the phrases "if it is determined" or "if the [described condition or event] is detected" may be interpreted, depending on the context, to mean "once it is determined" or "in response to the determination" or "once the [described condition or event] is detected. ]" or "in response to detection of the [described condition or event]".

References in this specification to "one embodiment" or "some embodiments" and the like mean that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless specifically emphasized otherwise. The terms "including", "including", "having" and their variants mean "including but not limited to" unless specifically emphasized otherwise.

In real life, when the user comes into contact with the currency, he hopes to identify whether the currency is genuine or counterfeit. If the contacted currency is identified as genuine, the real currency is accepted. If the contacted currency is identified as counterfeit , then refuse to accept the counterfeit currency to avoid economic losses. However, due to the limited knowledge and experience of the user and the relatively high technology of counterfeiting currency, it is difficult to effectively identify the authenticity of the currency only with the naked eye of the user. At this time, the user often needs to use a currency detector to identify the authenticity of the currency. . However, the purchase of a currency detector requires costs, and additionally carrying a currency detector requires a package of a certain volume, so it is difficult for users to identify the authenticity of the currency in time. In order to be able to identify the authenticity of currency in time, the present application pre-stores image information of standard currency in a mobile terminal (such as a mobile phone, tablet computer, etc.), where the image information includes depth information and color information. After that, when the user needs to identify the authenticity of the currency, open the camera application of the mobile terminal, and place the currency to be identified in front of the camera. In this way, a data stream containing the image information of the currency will appear on the camera preview interface of the mobile terminal. The image information of the currency to be identified is compared with the image information of the pre-stored standard currency, and if the similarity between the two is greater than or equal to a preset similarity threshold (such as greater than or equal to 99%), the currency to be identified is determined. If it is a real currency, otherwise, it is determined that the currency to be identified is a fake currency. Of course, in order to be able to identify the authenticity of currencies of different countries, image information of real currencies (ie, standard currencies) of a plurality of different countries is stored in advance.

The currency identification method provided by the embodiment of the present application is described below in conjunction with a specific flow chart, and the details are as follows:

Referring to FIG. 1, FIG. 1 shows a schematic flowchart of a currency identification method, which is applied to a mobile terminal. The currency identification method includes:

Step S11, if the camera of the mobile terminal is activated and receives a currency detection instruction, acquire image information corresponding to the currency to be detected in front of the camera, and the image information includes depth of field information and color information;

Wherein, the currency detection instruction can be issued by pressing a fixed button provided on the mobile terminal, and the fixed button can be a dedicated button used for issuing a currency detection instruction, or can be an existing button of the mobile terminal itself. Of course, if it is an existing button of the mobile terminal, it needs to set a new button response. For example, if the button used to issue the currency detection command is the existing volume increase button of the mobile terminal, and the original button response is : Press the volume up key once to increase the volume by 10%, and press the volume up key continuously to increase the volume by 10% continuously. The set new key response may be: pressing the volume up key once will increase the volume by 10%, and pressing the volume up key continuously will issue a currency detection instruction.

In some embodiments, the currency detection instruction can also be issued by touching the "currency detection" virtual key displayed on the camera preview interface. That is, a virtual button of "currency detection" is added to the camera preview interface, so that the user can know that the mobile terminal has the currency detection function.

In some embodiments, if the image information corresponding to the currency to be tested in front of the camera is obtained and it is determined that the image information corresponding to the currency is incomplete, the user is prompted to adjust the distance between the currency and the camera.

It should be noted that, if the camera of the mobile terminal is activated and no currency detection instruction is received, the acquired image information does not include depth of field information. The depth of field information can be acquired by a depth camera (the depth camera can be combined with time-of-flight (TOF) technology).

Step S12, comparing the image information of the currency to be tested with the image information of the standard currency;

Specifically, the color information of the currency to be tested is compared with the color information of the standard currency to obtain a first comparison result, and the depth of field information of the currency to be tested is compared with that of the standard currency to obtain a second comparison result. The first comparison result is used to indicate the similarity between the color information of the currency to be tested and the color information of the standard currency; the second comparison result is used to indicate the similarity of the depth information of the currency to be tested and the depth information of the standard currency.

Step S13, according to the comparison result, determine whether the currency to be tested is real currency.

Specifically, if both the first comparison result and the second comparison result satisfy the requirements, it is determined that the currency to be tested is real currency, otherwise, it is determined that the currency to be tested is fake currency.

In the embodiment of the present application, if the camera of the mobile terminal is activated and receives a currency detection instruction, the image information corresponding to the currency to be tested in front of the camera is obtained, and the image information of the currency to be tested is compared with the image information of the standard currency. The result of the comparison determines whether the currency under test is genuine currency. Since the user himself has purchased the mobile terminal and often carries the mobile terminal, identifying the authenticity of the currency through the mobile terminal can improve the timeliness of identification. Moreover, since the acquired image information includes depth of field information and color information, determining whether the currency is a real currency can improve the accuracy of the judgment result according to the results of comparing the depth information and color information of the currency with the depth information and color information of the standard currency, respectively. sex.

In some embodiments, the image information of the currency to be tested can be obtained in two ways. In this case, the step S11 includes:

A1. If the camera of the mobile terminal is activated and receives a currency detection instruction, obtain the image information of the preview corresponding to the currency to be tested in front of the camera;

or,

A2. If the camera of the mobile terminal is activated and a currency detection instruction is received, a photographing action is performed to obtain image information corresponding to the currency to be tested in front of the camera.

In the above A1 and A2, the image information of the currency to be tested in the preview interface can be used as the acquired image information of the currency to be tested, or the currency to be tested can be photographed, and corresponding image information can be obtained according to the photographed currency to be tested. When acquiring image information from the preview interface, since there is no need to perform a photographing action, there is no need to store the image obtained by performing the photographing action, thereby saving the memory of the mobile terminal; when acquiring image information from a photographed image, since there is no need to wait for recognition after photographing , therefore, the user does not need to hold the currency to be tested for a long time, thereby shortening the required participation time for the user.

In some embodiments, in order to obtain more accurate depth-of-field information, the following settings are made: whether to obtain image information on the preview interface or to obtain image information of the currency to be tested from the captured image, multiple (eg 30) images need to be obtained The depth of field information is extracted from the frames respectively, and the average value of the respectively extracted depth of field information is obtained, and the obtained average value is used as the final depth of field information.

In some embodiments, since only the image information of a certain area may need to be compared during the comparison process, the certain area may be intercepted as a target area to reduce the amount of data to be processed and improve the data processing speed. At this time, the step S12 includes:

B1. Intercept the image information of the target area from the image information of the currency to be tested; specifically, according to the acquired image area, an area of a specified size can be intercepted from a specified direction as the target area. After the color information of a specific area size is obtained, the area containing the specific area and of the specified size is intercepted as the target area. Among them, the area of the target area is smaller than the area of the area where the currency to be tested is located.

B2. Determine the possible currency to which the currency to be tested belongs according to the color information in the image information of the target area; since the currency is mainly related to the pattern shape included in the currency, and the pattern shape can be determined according to the color information, in order to reduce the calculation If the amount of the currency to be tested is determined, it is only necessary to determine the possible currency to which the currency to be tested belongs according to the color information. For example, if the "People's Bank of China" (or "National Emblem", etc.) is determined according to the color information of the currency to be tested, the possible currency to which the currency to be tested belongs is "RMB".

B3. Determine the corresponding standard currency according to the possible currency to which the currency to be tested belongs; specifically, if the possible currency to which the currency to be tested belongs is RMB, the standard currency is determined as "RMB".

B4. Compare the image information of the target area with the determined image information of the corresponding standard currency.

In real life, the currency value of some countries' currencies is very high, therefore, the currency value can be used to screen the currency to quickly determine the possible currency to which the currency to be tested belongs. At this time, the B2 includes:

B21. Determine the currency value of the currency to be tested according to the color information in the image information of the target area; specifically, extract the currency value of the currency according to the color distribution of the color information of the currency to be tested, for example, referring to FIG. 2, the currency value of “100” There is a big difference between the color and the color of the surrounding area, and the color of the "100" number itself also has a certain difference. Therefore, the currency value "100" can be extracted according to these known color differences.

B22. Determine the possible currency to which the currency to be tested belongs according to the currency value of the currency to be tested. Specifically, a currency with a specific currency value is predetermined, so that when it is determined that the currency value of the currency to be tested matches the predetermined currency value, the possible currency to which the currency to be tested belongs is determined as the currency to which the currency matching the specific currency value belongs. .

In some embodiments, since the number of currencies with a specific currency value is small, that is, the probability that the currency value of the currency to be tested is a specific currency value is small, therefore, if it is determined that the currency value of the currency to be tested does not belong to the specific currency value, that is The number of currencies to which the currency to be tested may belong is relatively large. In order to reduce the number of currencies to which the currency to be tested may belong, after the B22, include:

C1. If the determined number of possible currencies to which the currency to be tested belongs is greater than or equal to a preset quantity threshold, determine the face information in the currency to be tested according to the color information in the image information of the target area;

Since one of the two sides of the currency to be tested has a human face, the face information of the currency to be tested can be determined through the known color information of the human face in the currency. Of course, if no face information can be detected from the acquired image information, the user will be prompted to flip the currency to be tested, so that the camera can capture the other side of the currency to be tested, and then determine the person in the flipped currency to be tested. face information.

C2. Further screen the possible currencies to which the currency to be tested belongs according to the face information, and obtain the possible currencies to which the selected currency to be tested belongs.

Since the face information of different currencies is different, the acquired face information corresponding to different currencies can be compared with the face information extracted from the currency to be tested, and the ones with low matching degree can be removed according to the comparison results. Currency, retain the currency with a high degree of matching as the possible currency to which the tested currency after screening belongs.

In some embodiments, in order to improve the accuracy of the comparison results, the target area of the currency to be tested is divided into at least two grids, and of course the corresponding area of the standard currency is also divided into at least two grids. B4 includes:

B41. Divide the target area into at least two grids, and a grid of the target area and a grid corresponding to the determined standard currency are used as a grid group;

B42. For each grid group, determine color distribution information, color saturation, brightness information and sharpness from the color information corresponding to the grid of the target area, and, from the depth of field information corresponding to the grid of the target area Determine the layering between pixels, the stereoscopic effect and the thickness of the target area;

Among them, the sharpness can be determined according to the gradient value of the pixel value; because the currency has a certain sense of concave and convex, different elements (such as the national emblem of the RMB, the currency value of different elements) or the same element also has a certain sense of hierarchy, three-dimensional effect, Therefore, in order to improve the recognition accuracy of currency, the layering between pixels (the difference between the pixels is large, the layering is strong) and the stereo effect (the difference in distance is large) can be determined according to the distance between the pixels and the camera (that is, the depth of field information). The stereo effect is strong). Of course, the thickness of the target area can also be determined according to the distance between the specified boundary in the target area and the camera.

B43. The color distribution information, color saturation, brightness information and definition determined from the color information corresponding to the grid of the target area are respectively compared with the standard color distribution information, standard color saturation, standard color distribution information, standard color saturation, standard The brightness information and the standard definition are compared, and the layering between the pixels determined from the depth information corresponding to the grid of the target area, the stereoscopic effect and the thickness of the target area are respectively compared with the standard pixels of the corresponding grid in the standard currency. Comparison of layering, standard stereoscopic effect and standard target area thickness.

In some embodiments, in order to improve the identification accuracy of currency, the currency identification method further includes:

Acquiring audio data when the motor of the mobile terminal vibrates the currency to be tested;

Correspondingly, the step S13 is specifically:

It is determined whether the currency to be tested is genuine currency according to the comparison result and the audio data.

Since the currency is made of a specific material, it has a specific sound when it is thrown. In order to further improve the recognition accuracy of the currency to be tested, the user is prompted to attach the currency to be tested to the mobile terminal, after which the mobile terminal will control the motor vibration (for example, control the motor vibration after a preset time after the prompt), and control the microphone Get audio data. Since the acquired audio data includes not only the sound data produced by the currency being vibrated, but also the sound of the motor itself vibrating and the noise of the environment, therefore, it is necessary to filter the sound of the motor itself vibrating and the environmental noise from the acquired initial audio data. noise, and then use the filtered audio data as the audio data of the currency to be tested.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Corresponding to the currency identification method described in the above embodiment, FIG. 3 shows a structural block diagram of the currency identification device provided by the embodiment of the present application. The currency identification device is applied to a mobile terminal. Apply for the relevant part of the example.

3, the currency identification device 3 includes: an image information acquisition unit 31, an image information comparison unit 32, and a currency identification unit 33, wherein:

The image information acquisition unit 31 is configured to acquire image information corresponding to the currency to be detected in front of the camera if the camera of the mobile terminal is activated and receives a currency detection instruction, and the image information includes depth of field information and color information;

Wherein, the currency detection instruction can be issued by pressing the fixed button arranged on the mobile terminal;

In some embodiments, the currency detection instruction can also be issued by touching the "currency detection" virtual key displayed on the camera preview interface.

The image information comparison unit 32 is used to compare the image information of the currency to be tested with the image information of the standard currency;

Specifically, the color information of the currency to be tested is compared with the color information of the standard currency to obtain a first comparison result, and the depth of field information of the currency to be tested is compared with that of the standard currency to obtain a second comparison result. The first comparison result is used to indicate the similarity between the color information of the currency to be tested and the color information of the standard currency; the second comparison result is used to indicate the similarity of the depth information of the currency to be tested and the depth information of the standard currency.

The currency identification unit 33 is configured to determine whether the currency to be tested is real currency according to the comparison result.

Specifically, if both the first comparison result and the second comparison result satisfy the requirements, it is determined that the currency to be tested is real currency, otherwise, it is determined that the currency to be tested is fake currency.

In the embodiment of the present application, since the user himself has purchased the mobile terminal and often carries the mobile terminal, identifying the authenticity of the currency through the mobile terminal can improve the timeliness of identification. Moreover, since the acquired image information includes depth of field information and color information, determining whether the currency is a real currency can improve the accuracy of the judgment result according to the results of comparing the depth information and color information of the currency with the depth information and color information of the standard currency, respectively. sex.

In some embodiments, the image information acquisition unit 31 includes:

If the camera of the mobile terminal is activated and a currency detection instruction is received, acquiring image information of the preview corresponding to the currency to be tested in front of the camera;

or,

If the camera of the mobile terminal is activated and a currency detection instruction is received, a photographing action is performed to acquire image information corresponding to the currency to be tested in front of the camera.

In some embodiments, the image information comparison unit 32 includes:

an image information interception module, used for intercepting the image information of the target area from the image information of the currency to be tested;

A possible currency determination module, configured to determine the possible currency to which the currency to be tested belongs according to the color information in the image information of the target area;

a standard currency determination module, configured to determine the corresponding standard currency according to the possible currency to which the currency to be tested belongs;

The image information comparison module of the target area is used for comparing the image information of the target area with the determined image information of the corresponding standard currency.

In some embodiments, the possible currency determination module includes:

a currency value determination module for determining the currency value of the currency to be tested according to the color information in the image information of the target area;

The possible currency determination module to which the currency to be tested belongs is configured to determine the possible currency to which the currency to be tested belongs according to the currency value of the currency to be tested.

In some embodiments, the currency identification device 3 includes:

The face information determination module is used to determine, according to the color information in the image information of the target area, the number of possible currencies to which the currency to be tested belongs is greater than or equal to a preset number threshold. face information;

The currency screening module is configured to further screen the possible currencies to which the currency to be tested belongs according to the face information, and obtain the possible currencies to which the selected currency to be tested belongs.

In some embodiments, the image information comparison module of the target area includes:

a target area dividing module, configured to divide the target area into at least two grids, and a grid of the target area and a grid corresponding to the determined standard currency are used as a grid group;

The color distribution information determination module is configured to, for each grid group, determine color distribution information, color saturation, brightness information and sharpness from the color information corresponding to the grid of the target area, and, from the target area The depth of field information corresponding to the grid determines the layering between pixels, the stereoscopic effect and the thickness of the target area;

The color distribution information comparison module is used for the color distribution information, color saturation, brightness information and sharpness determined from the color information corresponding to the grid of the target area respectively and the standard color distribution information of the corresponding grid in the standard currency, Standard color saturation, standard brightness information and standard definition are compared, and the layering between pixels, the stereoscopic effect and the thickness of the target area determined from the depth of field information corresponding to the grid of the target area are respectively compared with the standard currency. Comparison of layering, standard stereoscopic effect, and standard target area thickness between standard pixels of the corresponding grid.

In some embodiments, the currency identification device 3 further comprises:

an audio data acquisition unit for acquiring audio data when the motor of the mobile terminal vibrates the currency to be tested;

Correspondingly, the currency identification unit 33 is specifically used for:

It is determined whether the currency to be tested is genuine currency according to the comparison result and the audio data.

It should be noted that the information exchange, execution process and other contents between the above-mentioned devices/units are based on the same concept as the method embodiments of the present application. For specific functions and technical effects, please refer to the method embodiments section. It is not repeated here.

FIG. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application. As shown in FIG. 4 , the mobile terminal 4 of this embodiment includes: at least one processor 40 (only one processor is shown in FIG. 4 ), a memory 41 , and a memory 41 that is stored in the memory 41 and can be processed in the at least one The computer program 42 running on the processor 40, when the processor 40 executes the computer program 42, implements the steps in any of the above method embodiments:

If the camera of the mobile terminal is activated and a currency detection instruction is received, image information corresponding to the currency to be detected in front of the camera is acquired, and the image information includes depth of field information and color information;

comparing the image information of the currency to be tested with the image information of the standard currency;

According to the comparison result, it is determined whether the currency to be tested is the real currency.

The mobile terminal 4 may be a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud server. The mobile terminal may include, but is not limited to, a processor 40 and a memory 41 . Those skilled in the art can understand that FIG. 4 is only an example of the mobile terminal 4, and does not constitute a limitation on the mobile terminal 4. It may include more or less components than the one shown, or combine some components, or different components , for example, may also include input and output devices, network access devices, and the like.

The so-called processor 40 may be a central processing unit (Central Processing Unit, CPU), and the processor 40 may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuits) , ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 41 may be an internal storage unit of the mobile terminal 4 in some embodiments, such as a hard disk or a memory of the mobile terminal 4 . In other embodiments, the memory 41 may also be an external storage device of the mobile terminal 4, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc. Further, the memory 41 may also include both an internal storage unit of the mobile terminal 4 and an external storage device. The memory 41 is used to store an operating system, an application program, a boot loader (Boot Loader), data, and other programs, such as program codes of the computer program. The memory 41 can also be used to temporarily store data that has been output or will be output.

Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. Module completion, that is, dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated in one processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit, and the above-mentioned integrated units may adopt hardware. It can also be realized in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present application. For the specific working process of the units and modules in the above-mentioned system, reference may be made to the corresponding process in the foregoing method embodiments, which will not be repeated here.

An embodiment of the present application also provides a network device, the network device includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, the processor executing The computer program implements the steps in any of the foregoing method embodiments.

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented.

The embodiments of the present application provide a computer program product, when the computer program product runs on a mobile terminal, the steps in the foregoing method embodiments can be implemented when the mobile terminal executes the computer program product.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the present application realizes all or part of the processes in the methods of the above embodiments, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When executed by a processor, the steps of each of the above method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include at least: any entity or device capable of carrying the computer program code to the photographing device/terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal, and software distribution medium. For example, U disk, mobile hard disk, disk or CD, etc. In some jurisdictions, under legislation and patent practice, computer readable media may not be electrical carrier signals and telecommunications signals.

In the foregoing embodiments, the description of each embodiment has its own emphasis. For parts that are not described or described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed apparatus/network device and method may be implemented in other manners. For example, the apparatus/network device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units. Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: it can still be used for the above-mentioned implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the application, and should be included in the within the scope of protection of this application.

Claims (10)

1. A currency identification method is applied to a mobile terminal, and comprises the following steps:

if a camera of the mobile terminal is started and a currency detection instruction is received, acquiring image information corresponding to currency to be detected in front of the camera, wherein the image information comprises depth information and color information;

comparing the image information of the currency to be detected with the image information of standard currency;

and determining whether the currency to be detected is true currency or not according to the comparison result.

2. The currency recognition method according to claim 1, wherein the obtaining of the image information corresponding to the currency to be detected in front of the camera if the camera of the mobile terminal is activated and the currency detection command is received comprises:

if a camera of the mobile terminal is started and a currency detection instruction is received, acquiring previewed image information corresponding to currency to be detected in front of the camera;

or,

and if the camera of the mobile terminal is started and the currency detection instruction is received, executing a photographing action to acquire image information corresponding to the currency to be detected in front of the camera.

3. The money discriminating method according to claim 1, wherein the comparing the image information of the money to be measured with the image information of the standard money includes:

intercepting image information of a target area from the image information of the currency to be detected;

determining the possible currency type of the currency to be detected according to the color information in the image information of the target area;

determining corresponding standard currency according to the possible currency types of the currency to be detected;

and comparing the image information of the target area with the determined image information of the corresponding standard currency.

4. A currency identification method as claimed in claim 3, wherein said determining the possible currency to which the currency to be tested belongs based on the color information in the image information of the target area comprises:

determining the currency value of the currency to be detected according to the color information in the image information of the target area;

and determining the possible currency type of the currency to be detected according to the currency value of the currency to be detected.

5. The currency identification method according to claim 4, wherein after said determining the possible currency to which the currency to be tested belongs based on the currency value of the currency to be tested, comprising:

if the determined number of the possible currency types to which the currency to be detected belongs is larger than or equal to a preset number threshold, determining face information in the currency to be detected according to color information in the image information of the target area;

and further screening the possible currency type to which the currency to be detected belongs according to the face information to obtain the possible currency type to which the screened currency to be detected belongs.

6. A currency identification method according to claim 3, wherein said comparing image information of said target area with image information of a determined corresponding standard currency comprises:

dividing the target area into at least two grids, wherein one grid of the target area and a corresponding grid in the determined standard currency are used as a grid group;

for each grid group, determining color distribution information, color saturation, brightness information and definition from color information corresponding to the grid of the target area, and determining layering, stereoscopic effect and thickness of the target area among pixels from depth information corresponding to the grid of the target area;

comparing color distribution information, color saturation, brightness information, and sharpness determined from the color information corresponding to the mesh of the target area with standard color distribution information, standard color saturation, standard brightness information, and standard sharpness of a corresponding mesh in standard currency, respectively, and comparing the sense of layering between pixels, the stereoscopic effect, and the thickness of the target area determined from the depth of field information corresponding to the mesh of the target area with the sense of layering between standard pixels, the standard stereoscopic effect, and the thickness of the standard target area of a corresponding mesh in standard currency, respectively.

7. The money discriminating method according to any one of claims 1 to 6, further comprising:

acquiring audio data when a motor of the mobile terminal vibrates the currency to be detected;

correspondingly, the step of determining whether the currency to be detected is true currency according to the comparison result specifically includes:

and determining whether the currency to be detected is true currency or not according to the comparison result and the audio data.

8. A money discriminating apparatus, applied to a mobile terminal, comprising:

the currency detection device comprises an image information acquisition unit, a currency detection unit and a currency detection unit, wherein the image information acquisition unit is used for acquiring image information corresponding to currency to be detected in front of a camera if the camera of the mobile terminal is started and receives a currency detection instruction, and the image information comprises depth of field information and color information;

an image information comparing unit for comparing the image information of the money to be measured with the image information of the standard money;

and the currency identification unit is used for determining whether the currency to be detected is true currency or not according to the comparison result.

9. A mobile terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.

Images