WO2021151348A1 - Certificate verification method and apparatus, and device and storage medium - Google Patents

Abstract

Provided are a certificate verification method and apparatus, and a device and a storage medium. The certificate verification method comprises: in the process of a target device photographing a target certificate, acquiring a target acceleration of the target device (S101); acquiring a certificate image obtained by the target device photographing the target certificate (S102); determining a displacement parameter of the target device according to the target acceleration of the target device (S103); verifying the validity of the certificate image according to the displacement parameter of the target device (S104); if the certificate image is valid, verifying the legitimacy of the target certificate according to the certificate image (S105); and if the certificate image is invalid, outputting prompt information, wherein the prompt information is used for giving a prompt for re-photographing the target certificate (S106). The present invention can improve the accuracy of legitimacy verification of a target certificate, and is applicable to the field of digital medical treatment.

Description

Credential verification method, device, equipment and storage medium

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on October 10, 2020 with the application number 202011078719.9 and the invention title "Document verification method, device, equipment and storage medium", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of computer technology, in particular to a certificate verification method, device, equipment and storage medium.

Background technique

Generally, ID card authentication needs to be taken from multiple angles (such as positive angle, forward, backward) to obtain multiple ID images. Among them, the ID card needs to be taken from a positive angle to obtain two IDs. Image, the first document image is obtained by shooting the target document with the flashlight turned off at a positive angle, and the second document image is obtained by shooting the target document with the flashlight turned on at a positive angle. Since the flash needs to be turned on when the second ID image is taken, it is easy to cause the user's ID to be replaced. The inventor realizes that at present, it is mainly based on the pixel information in the second document image to verify whether the second document image has been replaced. Because the second document image is overexposed under strong light, the second document image is lost. More pixel information, in turn, causes the accuracy of the verification method to be relatively low.

Summary of the invention

The embodiments of the present application provide a certificate-based verification method, device, equipment, and storage medium, which can improve the accuracy of the legality verification of the target certificate.

In the first aspect, an embodiment of the present application provides a certificate verification method, which includes:

During the process of the target device photographing the target certificate, the target acceleration of the target device is acquired; before the target device photographs the target certificate, the position information of the target device and the position information of the target certificate In alignment

Acquiring a credential image obtained by shooting the target credential by the target device;

Determining the displacement parameter of the target device according to the target acceleration of the target device;

Verify the validity of the credential image according to the displacement parameter of the target device;

If the credential image is valid, verify the legitimacy of the target credential according to the credential image;

If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential.

In the second aspect, an embodiment of the present application provides a certificate verification device, which includes:

The first acquisition module is configured to acquire the target acceleration of the target device during the process of the target device photographing the target certificate; before the target device photographs the target certificate, the location information of the target device is the same as The position information of the target certificate is in an aligned state;

The second acquisition module is configured to acquire a credential image obtained by shooting the target credential by the target device;

A determining module, configured to determine the displacement parameter of the target device according to the target acceleration of the target device;

The first verification module is configured to verify the validity of the credential image according to the displacement parameter of the target device;

The second verification module is configured to verify the validity of the target certificate according to the certificate image if the certificate image is valid;

The output module is configured to output prompt information if the credential image is not valid, and the prompt information is used to prompt to re-shoot the target credential.

In a third aspect, an embodiment of the present application provides an electronic device, which includes: a processor adapted to implement one or more instructions; and a computer storage medium storing one or more instructions. Alternatively, the device includes a processor, a memory, and a network interface; the processor is connected to the memory and the network interface, wherein the network interface is used to provide a data communication function, and the memory is used to store program codes.

Wherein, the one or more instructions are adapted to be loaded by the processor and execute the following steps, or the processor is used to call the program code to execute the following steps:

During the process of the target device photographing the target certificate, the target acceleration of the target device is acquired; before the target device photographs the target certificate, the position information of the target device and the position information of the target certificate In alignment

Acquiring a credential image obtained by shooting the target credential by the target device;

Determining the displacement parameter of the target device according to the target acceleration of the target device;

Verify the validity of the credential image according to the displacement parameter of the target device;

If the credential image is valid, verify the legitimacy of the target credential according to the credential image;

If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, including: the computer-readable storage medium stores one or more instructions. For example, the computer-readable storage medium stores a computer program, and the computer program includes program instructions. Wherein, the one or more instructions are suitable for being loaded by a processor and executing the following steps:

During the process of the target device photographing the target certificate, the target acceleration of the target device is acquired; before the target device photographs the target certificate, the position information of the target device and the position information of the target certificate In alignment

Acquiring a credential image obtained by shooting the target credential by the target device;

Determining the displacement parameter of the target device according to the target acceleration of the target device;

Verify the validity of the credential image according to the displacement parameter of the target device;

If the credential image is valid, verify the legitimacy of the target credential according to the credential image;

If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential.

The embodiment of the present application can prevent the target certificate from being replaced and affect the verification of the certificate image, and can improve the accuracy of the legality verification of the target certificate.

Description of the drawings

FIG. 1 is a schematic flowchart of a certificate verification method provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a three-dimensional direction of a mobile phone according to an embodiment of the present application;

3 is a schematic diagram of a method for determining a displacement parameter of a target device according to a target acceleration provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of integration processing provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of dividing an interval obtained by integration processing according to an embodiment of the present application; FIG.

FIG. 6 is a schematic diagram of acquiring the speed in the second time period provided by this embodiment;

FIG. 7 is a schematic diagram of acquiring the speed in the first time period provided by this embodiment;

FIG. 8 is a schematic flowchart of another certificate verification method provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a credential verification device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the figures in the embodiments of the present application.

The technical solution of this application can be applied to the fields of artificial intelligence, smart city and/or blockchain technology to realize the verification of certificates. Optionally, the data involved in this application, such as credential images, etc., can be stored in a database, or can be stored in a blockchain, which is not limited in this application.

Please refer to FIG. 1, which is a schematic flowchart of a credential verification method provided by an embodiment of this application. The embodiment of this application is executed by an electronic device. The credential verification method includes steps S101 to S106.

S101: Acquire a target acceleration of the target device during the process of the target device photographing the target certificate.

Before the target device shoots the target certificate, the location information of the target device is aligned with the location information of the target certificate. The position information of the target device is aligned with the position information of the target certificate means that the position of the target device is in a certain area directly above the position of the target certificate, that is, the target certificate has been captured in the shooting interface of the target device. The target acceleration of the target device may be acquired during the process of the target device shooting the target certificate, so as to determine whether the target device moves according to the target acceleration. Wherein, the target acceleration of the target device can be obtained by an acceleration sensor inside the target device, where the acceleration sensor can be a linear acceleration sensor (Sensor.TYPE_ACCELEROMETER), an angular acceleration sensor, a piezoelectric acceleration sensor, and so on. For example, the target device may refer to a mobile phone. For a mobile phone, facing the screen and placing it vertically is a natural orientation. The acceleration sensor of a mobile phone (such as Android) can be a linear acceleration sensor (Sensor.TYPE_ACCELEROMETER), which can detect the acceleration of the mobile phone in three directions according to the acceleration sensor on the mobile phone, that is, the acceleration in the x-axis direction and the acceleration in the y-axis direction. Acceleration and acceleration in the z-axis direction. Acceleration is a vector that represents the rate of speed change in a certain direction. As shown in Figure 2, a schematic diagram of the three-dimensional direction of a mobile phone provided by an embodiment of this application. Towards the outside of the screen. However, the acceleration measurement of TYPE_ACCELEROMETER includes the acceleration of gravity. Even if the phone is stationary in the natural direction, there will be an acceleration value on the Y axis (the value on the test machine is 9.6), which is approximately equal to gravity 9.8m/s ² . According to the test result, the sensor on the mobile phone has an error, and the measured acceleration of gravity is not equal to 9.8m/s ² . The gravitational acceleration is an interference factor for obtaining the target acceleration, so the gravitational acceleration needs to be removed.

S102: Acquire a credential image obtained by a target credential taken by the target device.

S103: Determine a displacement parameter of the target device according to the target acceleration of the target device.

The target credential can be photographed according to the camera module on the target device, the credential image obtained during the shooting of the target credential by the target device can be obtained, and the target acceleration generated by the shooting of the target credential by the target device can be obtained. And after acquiring the target acceleration of the target device, the displacement parameter of the target device is determined according to the acceleration of the target device, and the displacement parameter refers to the distance moved by the target device when photographing the target document.

Optionally, as shown in FIG. 3, it is a schematic diagram of a method for determining the displacement parameter of the target device according to the target acceleration provided by an embodiment of the present application. As shown in FIG. 3, the method for determining the displacement parameter of the target device according to the target acceleration is shown in FIG. The steps of the schematic diagram of the method include S21-S23.

S21, the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction may be summed to obtain a candidate acceleration.

The target acceleration of the target device includes acceleration in the first direction, acceleration in the second direction, and acceleration in the third direction. As shown in FIG. 2, a schematic diagram of a three-dimensional direction of a mobile phone provided by an embodiment of this application. The acceleration in the first direction may refer to the acceleration in the X-axis direction, which is horizontal and toward the right; the acceleration in the second direction It can refer to the acceleration in the Y-axis direction, which is vertical and toward the upper side; the acceleration in the third direction can refer to the acceleration in the Z-axis direction, which is toward the outside of the screen. The acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction may be summed to obtain candidate accelerations. Since acceleration is a vector characteristic, the candidate acceleration can be obtained by vector summation of the acceleration in the three directions.

Among them, the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction can be expressed by the following formula (1).

Wherein, x in formula (1) refers to the acceleration in the first direction, a refers to the acceleration in the first direction; y refers to the acceleration in the second direction, and b refers to the acceleration in the second direction; z refers to the acceleration in the third direction, and c refers to the acceleration in the third direction. Since acceleration is a vector characteristic, the magnitude of the target acceleration can be obtained by vector summation of the acceleration in the three directions. The vector summation of the acceleration in the three directions can be expressed by the following formula (2):

Among them, a in formula (2) refers to the magnitude of acceleration in the first direction, b refers to the magnitude of acceleration in the second direction, and c refers to the magnitude of acceleration in the third direction. After summing the accelerations in the three directions, the result is a vector. The general formula for calculating the magnitude of the vector can be expressed by the following formula (3).

Wherein, v (3) in the formula refers to the acceleration, v _i is the i-th acceleration means, i is 1, 2, and so on means. Since the embodiment of the present application performs vector summation of the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction, the vector magnitude of the candidate acceleration can be expressed by the following formula (4).

Among them, mag in formula (4) refers to the magnitude of the candidate acceleration vector, v _x refers to the magnitude of the acceleration in the first direction, v _y refers to the magnitude of the acceleration in the second direction, and v _z refers to the acceleration in the third direction. size. It can be based on the data generated by the sensor event object (SensorEvent) returned by the acceleration sensor (LINEAR_ACCELERATION) in the target device during a certain period of time, including information such as the timestamp, value, accuracy and so on when the acceleration is acquired. The values field of the sensing event object includes an array of three elements, namely values[0], values[1], values[2], which correspond to the acceleration in the first direction, the acceleration in the second direction, and the third party respectively. The magnitude of the upward acceleration. The vector sum of acceleration in the three directions can be expressed by the following formula (5).

Among them, values[0] in formula (5) corresponds to the acceleration in the first direction, that is, the acceleration in the X-axis direction; values[1] corresponds to the acceleration in the second direction, that is, the acceleration in the Y-axis direction Size; values[2] corresponds to the magnitude of the acceleration in the third direction, that is, the magnitude of the acceleration in the Z-axis direction. In addition, the magnitude of the vector sum of the accelerations in the three directions can be expressed by the following formula (6).

S21: Remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration.

S21: If the target acceleration is greater than the preset acceleration threshold, perform the step of determining the displacement parameter of the target device according to the target acceleration.

The magnitude of the vector sum of the accelerations in the three directions is the candidate acceleration. Remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration; if the target acceleration is greater than the preset acceleration threshold, the displacement parameter of the target device is determined according to the target acceleration. Remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration. When the acceleration in the three directions is acquired through the acceleration sensor of the target device, the gravitational acceleration will also be acquired, but the gravitational acceleration is an interference factor when determining whether the target device is moving, so the gravitational acceleration needs to be removed. Since the gravitational acceleration is known, the target acceleration can be obtained by subtracting the value of the gravitational acceleration from the value of the candidate acceleration. For example, if the target device is a mobile phone, a gravity acceleration sensor is generally installed in the mobile phone to measure the acceleration of gravity in three directions of the mobile phone. Obtain the target gravitational acceleration value according to the gravitational acceleration values in the three directions. The target acceleration can be obtained by subtracting the value of the target gravitational acceleration from the value of the candidate acceleration. Among them, since the user's hand usually jitters when holding the target device, or the acceleration sensor of the target device has a certain error, the measured acceleration value is greater than 0 even when it is stationary. Therefore, if the target acceleration is greater than the preset acceleration threshold, the step of determining the displacement parameter of the target device according to the target acceleration is executed; if the target acceleration is less than or equal to the preset acceleration threshold, the step of determining the displacement parameter of the target device according to the target acceleration is not executed , Directly confirm the validity of the credential image. Only when the target acceleration is greater than the preset acceleration threshold will it be determined that the target device has moved, otherwise it may be caused by an error in the acceleration sensor of the target device or a slight jitter of the user. It should be noted that the preset acceleration threshold in the embodiment of the present application may be specifically set according to specific conditions, and the embodiment of the present application does not limit it.

Optionally, the target acceleration is the acceleration of the target device within a preset time period, and the method of determining the displacement parameter of the target device according to the target acceleration may be: integrating the target acceleration according to the preset time period to obtain the speed of the target device, The speed of the target device is integrated according to the preset time period to obtain the displacement parameter of the target device.

The target acceleration in the embodiment of the present application is the acceleration of the target device within a preset time, because the acceleration represents the rate of change of the velocity with respect to time, and the velocity itself represents the rate of change of the displacement with respect to time. According to the mathematical definition, acceleration is the derivative of speed with respect to time, and speed is the derivative of displacement with respect to time. The acceleration obtained by deriving the displacement twice can be expressed by the following formula (7).

Among them, in formula (7)

Represents acceleration,

Represents speed,

Represents displacement, t represents time. Therefore, the target acceleration can be integrated according to the preset time to obtain the speed of the target device. Then, the speed of the target device is integrated according to the preset time to obtain the displacement parameter of the target device. The displacement obtained by integrating the acceleration twice can be expressed by the following formula (8).

Optionally, the target acceleration includes the acceleration of the target device in the first time period and the acceleration in the second time period, and both the first time period and the second time period belong to the preset time period. The acceleration of the first time period may be integrated according to the first time period to obtain the first candidate speed; the acceleration of the second time period may be integrated according to the second time period to obtain the second candidate speed. Get half of the difference between the first candidate speed and the second candidate speed. If the first candidate speed is less than the second candidate speed, then sum up half of the above difference and the first candidate speed to obtain the second time period If the first candidate speed is greater than or equal to the second candidate speed, then sum up half of the above difference and the second candidate speed to obtain the speed of the first time period; according to the speed of the second time period or the first The speed of the time period determines the speed of the target device.

As shown in FIG. 4, a schematic diagram of integration processing provided by an embodiment of this application. As shown in FIG. The second time tick b, the X axis, and the area S of the curved trapezoid surrounded by the curve formed by the target acceleration in the preset time period. Among them, X refers to time, Y refers to acceleration, the first time tick a refers to the start time of the preset time period, the second time tick b refers to the end time of the preset time period, and f(x) refers to the target The curve formed by the acceleration in the preset time period. Among them, the area S of the curved trapezoid refers to the speed of the target device obtained after the target acceleration is integrated. Wherein, as shown in FIG. 5, a schematic diagram of dividing the interval obtained by the integration processing provided by this embodiment of the application. As shown in FIG. The area S is divided into a plurality of rectangular areas as small as possible, and the area of each rectangle is equal to the product of t _n (the n-th time period) and f(n) (the acceleration in the n-th time period) corresponding to each rectangular area. The area of each rectangle can be expressed by the following formula (9).

S _n ＝f(n)×Δt (9)

S _n refers to the area of the nth time period, f(n) refers to the y value of the nth time period, that is, the target acceleration, and Δt refers to the time length of the nth time period. _{The smaller t n} corresponding to the area of each rectangle is, the closer the sum of the area of each rectangle is to the area S of the curved trapezoid. However, this kind of algorithm in the prior art will produce certain errors. As shown in FIG. 6, a schematic diagram of obtaining the speed in the second time period provided by this embodiment. As shown in FIG. 6, if the target acceleration in the second time period is integrated by the algorithm in the prior art, then The area of the third part will be included, and the area of the third part does not belong to the second time period, so the excess area of the third part needs to be removed. As shown in Figure 6, the target acceleration corresponding to the second time period is greater than the target acceleration corresponding to the first time period. The target acceleration in the first time period can be integrated according to the first time period to obtain the target acceleration corresponding to the first time period. The first candidate speed is the rectangular area S1. The target acceleration in the first time period may refer to the average value of the acceleration in the first time period or the highest acceleration in the first time period. Similarly, the target acceleration in the second time period is integrated according to the second time period to obtain the second candidate speed corresponding to the second time period. The target acceleration in the second time period may also refer to the target acceleration in the second time period. The average value of acceleration or refers to the highest acceleration in the second time period. Obtain half of the difference between the first candidate speed corresponding to the first time period and the second candidate speed corresponding to the second time period, as shown in FIG. 6, the first candidate speed corresponding to the first time period and the second time period The difference between the second candidate speeds corresponding to the segments refers to the part where the rectangular area corresponding to the second time period is larger than the rectangular area corresponding to the first time period, that is, the sum of the area of the second part and the area of the third part. Since the target acceleration corresponding to the first time period is less than the target acceleration corresponding to the second time period, the first candidate speed corresponding to the first time period is less than the second candidate speed corresponding to the second time period. Therefore, half of the difference between the first candidate speed and the second candidate speed can be obtained, and the first candidate speed can be obtained by summing the half of the difference between the first candidate speed and the second candidate speed and the first candidate speed. The speed in the second time period, that is, the sum of the area of the first part and the area of the second part. In this way, the area of each rectangle in the area S of the curved trapezoid is integrated to obtain the speed of the target device within the preset time period.

As shown in FIG. 7, a schematic diagram of obtaining the speed in the first time period provided by this embodiment. As shown in FIG. 7, the target acceleration corresponding to the second time period is less than the target acceleration corresponding to the first time period. The first time period performs integration processing on the target acceleration in the first time period to obtain the first candidate speed corresponding to the first time period. Similarly, the target acceleration in the second time period is integrated according to the second time period to obtain the second candidate speed corresponding to the second time period. Obtain half of the difference between the first candidate speed corresponding to the first time period and the second candidate speed corresponding to the second time period. As shown in FIG. 7, the first candidate speed corresponding to the first time period and the second time period The difference between the second candidate speeds corresponding to the segments refers to the part where the rectangular area corresponding to the first time segment is larger than the rectangular area corresponding to the second time segment, that is, the sum of the area of the second part and the area of the third part. Since the target acceleration corresponding to the first time period is greater than the target acceleration corresponding to the second time period, the first candidate speed corresponding to the first time period is greater than the second candidate speed corresponding to the second time period. Therefore, half of the difference between the first candidate speed and the second candidate speed can be obtained, and the area of the second part can be obtained. By summing the speeds, the speed of the first time period can be obtained, that is, the sum of the area of the first part and the area of the second part. In this way, the area of each rectangle in the area S of the curved trapezoid is integrated to obtain the speed of the target device within the preset time period.

Optionally, the speed of the target device includes the speed of the target device in the first time period and the speed in the second time period. After the speed of the target device in the preset time period is obtained, the speed of the target device is integrated to obtain the preset speed. The method of setting the displacement parameter of the target device in the time period can be: integrating the speed of the first time period according to the first time period to obtain the first candidate displacement; and integrating the speed of the second time period according to the second time period Process to obtain the second candidate displacement; obtain half of the difference between the first candidate displacement and the second candidate displacement; if the first candidate displacement is less than the second candidate displacement, sum the difference and the first candidate displacement, Obtain the displacement in the second time period; if the first candidate displacement is greater than or equal to the second candidate displacement, sum the difference and the second candidate displacement to obtain the displacement in the first time period; according to the displacement in the second time period or The displacement in the first time period determines the displacement parameter of the target device.

Similarly, you can refer to the processing method of integrating the target acceleration according to the preset time period to obtain the speed of the target device, and integrating the speed of the target device according to the preset time period to obtain the displacement parameter of the target device. Perform integration processing on the speed in the first time period according to the first time period to obtain the first candidate displacement corresponding to the first time period, and perform integration processing on the speed in the second time period according to the second time period to obtain the second time period The corresponding second candidate displacement. And obtain half of the difference between the first candidate displacement and the second candidate displacement. If the first candidate displacement is greater than the second candidate displacement, that is, the area obtained by integrating the speed of the first time period according to the first time period is larger than the area obtained by integrating the speed of the second time period according to the second time period, Then, half of the difference between the first candidate displacement and the second candidate displacement is summed with the second candidate displacement corresponding to the second time period to obtain the displacement of the first time period. If the first candidate displacement is smaller than the second candidate displacement, that is, the area obtained by integrating the speed of the first time period according to the first time period is smaller than the area obtained by integrating the speed of the second time period according to the second time period, Then, half of the difference between the first candidate displacement and the second candidate displacement is summed with the first candidate displacement corresponding to the first time period to obtain the displacement of the second time period. In this way, the speed of the preset time period is integrated, and the displacement parameter of the target device is obtained.

S104: Verify the validity of the credential image according to the displacement parameter of the target device.

S105: If the credential image is valid, verify the legitimacy of the target credential based on the credential image.

S106: If the credential image is not valid, output prompt information, which is used to prompt to re-shoot the target credential.

The validity of the document image can be verified according to the value of the displacement parameter of the target device. The validity of the document image refers to whether the target document is replaced when the target device is shooting the target document. The replacement of the target document refers to the shooting of the target device The interface is transferred to other documents, that is, the shooting interface of the target device contains other documents but not the target document. The validity of the document image means that the target document has not been replaced, that is, the document image obtained by shooting the target document by the target device, and the legality of the target document can be verified by the document image obtained by shooting the target document. If the document image is not valid, that is, the photographing interface of the target device is transferred to another document, and the document image captured by the other document is replaced, and the legality of the target document cannot be determined based on the photographed document image. Perform verification to verify whether the target certificate has been replaced. If the credential image is not valid, a prompt message is output, and the prompt message is used to prompt the user to re-shoot the target credential, so as to improve the accuracy of verifying the legitimacy of the target credential.

In the embodiment of the present application, the target acceleration of the target device is obtained during the process of the target device photographing the target certificate; the displacement parameter of the target device is determined according to the target acceleration of the target device. At the same time, it is determined whether the target acceleration is greater than the first acceleration threshold. If the target acceleration is greater than the first acceleration threshold, the displacement parameter of the target device is determined according to the target acceleration of the target device, so as to reduce the defects caused by the target device itself error. Verify the validity of the document image according to the displacement parameter of the target device, that is, verify whether the target document is replaced according to the displacement parameter of the target device; The image verifies the legality of the target document; if the document image is not valid, that is, the target device is transferred to another document, and the other document is photographed to obtain the document image, and the target document is replaced with another document, a prompt message will be output The prompt information is used to prompt to re-shoot the target certificate, so as to avoid the target certificate being replaced and affect the verification of the certificate image, and the accuracy of the legality verification of the target certificate can be improved.

As shown in FIG. 8, it is a schematic flowchart of another certificate verification method provided by this embodiment. As shown in FIG. 8, the schematic flowchart of another certificate verification method includes steps S201-S209.

S201: Acquire the target acceleration of the target device during the process of the target device photographing the target certificate.

S202: Acquire a credential image obtained by shooting the target credential by the target device.

S203: Determine a displacement parameter of the target device according to the target acceleration of the target device.

For the specific content of steps S201-S203 in the embodiment of the present application, please refer to the content illustrated in the embodiment of FIG. 1, which will not be repeated here.

S204: Determine whether the displacement parameter of the target device is greater than a preset displacement threshold.

S205: If the displacement parameter of the target device is less than or equal to the preset displacement threshold, the credential image is valid.

S206: If the credential image is valid, verify the legitimacy of the target credential according to the credential image.

After obtaining the displacement parameter of the target device, determine whether the displacement parameter of the target device is greater than the preset displacement threshold. If the displacement parameter of the target device is less than or equal to the preset displacement threshold, it means that the distance of the target device is relatively small, which is a normal movement of the user Range, such as the user’s hand shaking, etc., the ID image is valid. If the credential image is valid, it means that the credential image was taken from the target credential, and the target credential has not been replaced. Therefore, the legitimacy of the credential can be verified based on the credential image.

Optionally, the target feature information can be extracted from the credential image, the sample feature information set of the sample credential image about the credential can be obtained, and the target feature information can be matched with the sample feature information in the sample feature information set. If the target characteristic information matches the target sample characteristic information in the sample characteristic information set, the target certificate is determined to be legitimized; if the target characteristic information does not match any sample characteristic information in the sample characteristic information set, it is determined that the target certificate does not have legality.

The target characteristic information can be extracted from the document image corresponding to the target document. The target characteristic information can refer to multiple characteristic information in the document image, such as character characteristic information, color characteristic information or pattern characteristic information, etc., to obtain information about the document The sample feature information collection of the sample image. The target feature information in the credential image is matched with the sample feature information in the sample feature information set. If the target feature information of the credential image matches the target sample feature information in the sample feature information set, it is determined that the target credential has legitimacy. If the target characteristic information does not match any sample characteristic information in the sample characteristic information set, it is determined that the target certificate is not legal. For example, a character recognition neural network model can be trained, and the character feature information in the document image can be matched with the sample feature information in the sample feature information set according to the character recognition neural network model. If the target feature information matches the target sample in the sample feature information set If the characteristic information matches, it is determined that the target document is legal. If the target characteristic information does not match any sample characteristic information in the sample characteristic information set, it is determined that the target certificate is not legal.

Optionally, the candidate information verification model can be trained to obtain the target information verification model, and the legitimacy of the target certificate can be verified according to the target information verification. Specifically, the candidate information verification model and the target feature information corresponding to the credential image to be verified, the sample feature information set corresponding to the sample credential image of the credential, and the target verification result corresponding to the credential image to be verified can be obtained. The candidate information verification model is used to verify whether there is sample feature information matching the target feature information in the sample feature information set, and obtain the predictive verification result. The predictive verification result includes the absence of sample feature information that matches the target feature information, or the existence of the target feature information Information matching sample feature information. The candidate information verification model is adjusted according to the prediction verification result and the target verification result, and the target information verification model is obtained.

Optionally, the loss value of the candidate information verification model can be determined based on the aforementioned prediction verification result and the target verification result. If the loss value of the candidate information verification model does not meet the convergence condition, the candidate information verification model is compared with the loss value of the candidate information verification model. The information verification model is adjusted to obtain the target information verification model.

If the loss value of the candidate information verification model does not meet the convergence condition, that is, the loss value of the candidate information verification model is greater than the preset threshold, it means that the candidate information verification model has a low accuracy in verifying the target feature information in the document image. The candidate information model can be adjusted according to the loss value of the candidate information verification model, such as collecting the misjudgment factors for the verification of the target feature information in the document image by the candidate information verification model, and adjusting the difference between the target feature information in the document image and the sample feature information set Therefore, the candidate information verification model is adjusted to obtain the target information verification model. If the loss value of the candidate information verification model satisfies the convergence condition, that is, the loss value of the candidate information verification model is less than the preset threshold, it means that the candidate information verification model has a high correct rate of verifying the target feature information in the document image, then the candidate information The verification model is determined as the target information verification model.

S207: If the displacement parameter of the target device is greater than the preset displacement threshold, the credential image is not valid.

S208: If the credential image is not valid, output prompt information, which is used to prompt to re-shoot the target credential.

If the displacement parameter of the target device is greater than the preset displacement threshold, it means that the distance the user moves the target device is relatively large and does not belong to the user's normal range of movement. For example, the user moves the target device to the location of another certificate. It means that the document image is not taken from the target document, but may be taken from another document. The document image is not valid, and the legality of the target document cannot be verified based on the document image, otherwise it will affect the target document Verification of accuracy. If the target certificate is not valid, the legality of the target certificate cannot be verified based on the captured certificate image, and a prompt message is output, that is, a prompt message that requires the user to re-shoot, so that the user can re-shoot the target certificate. For example, when authenticating a Hong Kong ID card, a total of four pictures are required from three angles (positive angle, forward tilt, backward tilt), of which two are required for the first angle. The first document image is obtained by shooting the target document with the flash off. , The second ID image is obtained by shooting the target ID with the flash. Since the flashlight needs to be turned on when the second ID image is taken, if the displacement parameter of the target device is greater than the preset displacement threshold, when the target device takes the second ID image, it transfers to other IDs and takes the other IDs to obtain the result. The second credential image of is not obtained by shooting the target credential. The credential image after replacement under strong light is not significantly different from the previous credential image from the point of view of the algorithm, which will affect the success rate of verification. This is because the document image is overexposed under strong light and loses a lot of pixel information. It is difficult for the algorithm to calculate whether the second document image has been replaced by calculating the pixel information of the document image. If the validity of the target document is verified on the second document image obtained from other documents, it will affect the accuracy of the target document verification, and thus affect the success rate of the target document verification. Therefore, if the credential image is not valid, a prompt message is output to request the user to re-shoot the target credential, that is, to re-shoot the first credential image.

It should be noted that this application can be applied to the fields of digital medical and smart medical care, and can verify medical insurance cards and social security card certificates, so as to further prevent improper use of social security medical insurance cards, which is conducive to the management of the medical social security card system.

In the embodiment of the present application, the target acceleration of the target device is obtained during the process of the target device photographing the target certificate; the displacement parameter of the target device is determined according to the target acceleration of the target device. At the same time, it is determined whether the target acceleration is greater than the first acceleration threshold. If the target acceleration is greater than the first acceleration threshold, the displacement parameter of the target device is determined according to the target acceleration of the target device, so as to reduce the defects caused by the target device itself error. Verify the validity of the document image according to the displacement parameter of the target device, that is, verify whether the target document is replaced according to the displacement parameter of the target device; The image verifies the legality of the target document; if the document image is not valid, that is, the target device is transferred to another document, and the other document is photographed to obtain the document image, and the target document is replaced with another document, a prompt message will be output The prompt information is used to prompt to re-shoot the target certificate, so as to avoid the target certificate being replaced and affect the verification of the certificate image, and the accuracy of the legality verification of the target certificate can be improved.

Please refer to FIG. 9, which is a schematic structural diagram of a credential verification device provided in an embodiment of the present application. The device in the embodiment of the present application may be in the above-mentioned electronic device. In this embodiment, the certificate verification device includes:

The first acquisition module 11 is configured to acquire the target acceleration of the target device during the process of shooting the target certificate by the target device; before the target device shoots the target certificate, the location information of the target device Is in alignment with the position information of the target certificate;

The second acquiring module 12 is configured to acquire a credential image obtained by shooting the target credential by the target device;

The determining module 13 is configured to determine the displacement parameter of the target device according to the target acceleration of the target device;

Wherein, the target acceleration of the target device includes acceleration in the first direction, acceleration in the second direction, and acceleration in the third direction; the above device further includes:

A summation processing module, configured to perform summation processing on the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction to obtain a candidate acceleration;

A removing module, used to remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration;

The execution module is configured to execute the step of determining the displacement parameter of the target device according to the target acceleration if the target acceleration is greater than a preset acceleration threshold.

Wherein, the target acceleration is the acceleration of the target device in a preset time period;

The above determination module 13 further includes: a first integration processing unit and a second integration processing unit.

A first integration processing unit, configured to perform integration processing on the target acceleration according to the preset time period to obtain the speed of the target device;

The second integration processing unit is configured to perform integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device.

Wherein, the target acceleration includes the acceleration of the target device in a first time period and the acceleration of the target device in a second time period, and both the first time period and the second time period belong to the preset time period ；

The above-mentioned first integral processing unit is specifically used for:

Performing integration processing on the acceleration in the first time period according to the first time period to obtain a first candidate speed;

Performing integration processing on the acceleration in the second time period according to the second time period to obtain a second candidate speed;

Acquiring half of the difference between the first candidate speed and the second candidate speed;

If the first candidate speed is less than the second candidate speed, sum half of the difference and the first candidate speed to obtain the speed in the second time period;

If the first candidate speed is greater than or equal to the second candidate speed, sum half of the difference and the second candidate speed to obtain the speed in the first time period;

The speed of the target device is determined according to the speed of the second time period or the speed of the first time period.

Wherein, the speed of the target device includes the speed of the target device in the first time period and the speed of the target device in the second time period;

The above-mentioned second integral processing unit is specifically used for:

Performing integration processing on the velocity in the first time period according to the first time period to obtain a first candidate displacement;

Performing integration processing on the velocity in the second time period according to the second time period to obtain a second candidate displacement;

Obtaining half of the difference between the first candidate displacement and the second candidate displacement;

If the first candidate displacement is smaller than the second candidate displacement, sum up half of the difference and the first candidate displacement to obtain the displacement in the second time period;

If the first candidate displacement is greater than or equal to the second candidate displacement, sum half of the difference and the second candidate displacement to obtain the displacement in the first time period;

The displacement parameter of the target device is determined according to the displacement in the second time period or the displacement in the first time period.

The first verification module 14 is configured to verify the validity of the credential image according to the displacement parameter of the target device;

Wherein, the above-mentioned first verification module 14 includes: a judgment unit, a second determination unit, and a third determination unit.

A judging unit for judging whether the displacement parameter of the target device is greater than a preset displacement threshold;

The first determining unit is configured to determine that the credential image is valid if the displacement parameter of the target device is less than or equal to a preset displacement threshold;

The second determining unit is configured to determine that the document image is not valid if the displacement parameter of the target device is greater than the preset displacement threshold.

The second verification module 15 is configured to verify the legality of the target certificate according to the certificate image if the certificate image is valid;

Wherein, the above-mentioned second verification module 15 includes: an extraction unit, an acquisition unit, a matching unit, a fourth determination unit, and a fifth determination unit.

An extraction unit for extracting target feature information from the document image;

The obtaining unit is used to obtain the sample feature information set corresponding to the sample credential image of the credential;

A matching unit, configured to match the target feature information with the sample feature information in the sample feature information set;

The third determining unit is configured to determine that the target document is legal if the target characteristic information matches the target sample characteristic information in the sample characteristic information set;

The fourth determining unit is configured to determine that the target certificate does not have legitimacy if the target characteristic information does not match any sample characteristic information in the sample characteristic information set.

The output module 16 is configured to output prompt information if the credential image is not valid, and the prompt information is used to prompt to re-shoot the target credential.

Refer to FIG. 10, which is a schematic structural diagram of an electronic device according to an embodiment of the present application. Optionally, the electronic device may include a processor, a memory, and a network interface; the processor is connected to the memory and the network interface, wherein the network interface is used to provide data communication functions, and the memory is used to store program codes (or program codes). Instruction), the processor is used to call the program code to execute the method in the foregoing embodiment. Or, optionally, the electronic device in this embodiment as shown in FIG. 10 may include: one or more processors 21; one or more input devices 22, one or more output devices 23, and a memory 24. The aforementioned processor 21, input device 22, output device 23, and memory 24 are connected by a bus 25.

The processor 21 may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (ASICs). ), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

The input device 22 may include a touch panel, a fingerprint sensor (used to collect user fingerprint information and fingerprint orientation information), a microphone, etc., the output device 23 may include a display (LCD, etc.), a speaker, etc., and the output device 23 may output calibration The processed data sheet.

The memory 24 may include a read-only memory and a random access memory, and provides instructions and data to the processor 21. A part of the memory 24 may also include a non-volatile random access memory. The memory 24 is used to store a computer program. The computer program includes program instructions. The processor 21 is used to execute the program instructions stored in the memory 24 to execute a program. A method of certificate verification.

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24, and is configured to perform the following operations:

During the process of the target device photographing the target certificate, the target acceleration of the target device is acquired; before the target device photographs the target certificate, the position information of the target device and the position information of the target certificate In alignment

Acquiring a credential image obtained by shooting the target credential by the target device;

Determining the displacement parameter of the target device according to the target acceleration of the target device;

Verify the validity of the credential image according to the displacement parameter of the target device;

If the credential image is valid, verify the legitimacy of the target credential according to the credential image;

If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential.

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24, and is configured to perform the following operations:

Performing summation processing on the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction to obtain a candidate acceleration;

Remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration;

If the target acceleration is greater than a preset acceleration threshold, the step of determining the displacement parameter of the target device according to the target acceleration is performed.

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24, and is configured to perform the following operations:

Performing integration processing on the target acceleration according to the preset time period to obtain the speed of the target device;

Perform integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device.

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24, and is configured to perform the following operations:

Performing integration processing on the acceleration in the first time period according to the first time period to obtain a first candidate speed;

Performing integration processing on the acceleration in the second time period according to the second time period to obtain a second candidate speed;

Acquiring half of the difference between the first candidate speed and the second candidate speed;

If the first candidate speed is less than the second candidate speed, sum half of the difference and the first candidate speed to obtain the speed in the second time period;

If the first candidate speed is greater than or equal to the second candidate speed, sum half of the difference and the second candidate speed to obtain the speed in the first time period;

The speed of the target device is determined according to the speed of the second time period or the speed of the first time period.

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24, and is configured to perform the following operations:

Performing integration processing on the velocity in the first time period according to the first time period to obtain a first candidate displacement;

Performing integration processing on the velocity in the second time period according to the second time period to obtain a second candidate displacement;

Obtaining half of the difference between the first candidate displacement and the second candidate displacement;

If the first candidate displacement is smaller than the second candidate displacement, sum up half of the difference and the first candidate displacement to obtain the displacement in the second time period;

If the first candidate displacement is greater than or equal to the second candidate displacement, sum half of the difference and the second candidate displacement to obtain the displacement in the first time period;

The displacement parameter of the target device is determined according to the displacement in the second time period or the displacement in the first time period.

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24, and is configured to perform the following operations:

Judging whether the displacement parameter of the target device is greater than a preset displacement threshold;

If the displacement parameter of the target device is less than or equal to the preset displacement threshold, it is determined that the credential image is valid;

If the displacement parameter of the target device is greater than the preset displacement threshold, it is determined that the credential image is not valid.

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24, and is configured to perform the following operations:

Extracting target feature information from the document image;

Obtain the sample feature information set corresponding to the sample certificate image of the certificate;

Matching the target feature information with the sample feature information in the sample feature information set;

If the target characteristic information matches the target sample characteristic information in the sample characteristic information set, it is determined that the target certificate is legal;

If the target characteristic information does not match any sample characteristic information in the sample characteristic information set, it is determined that the target certificate does not have legitimacy.

The processor 21, input device 22, and output device 23 described in the embodiments of this application can perform the implementation described in the embodiment of the certificate verification method provided in the embodiments of this application, and can also perform the implementation described in the embodiments of this application. The implementation of the electronic device will not be repeated here.

In the embodiment of the present application, the target acceleration of the target device is obtained during the process of the target device photographing the target certificate; the displacement parameter of the target device is determined according to the target acceleration of the target device. At the same time, it is determined whether the target acceleration is greater than the first acceleration threshold. If the target acceleration is greater than the first acceleration threshold, the displacement parameter of the target device is determined according to the target acceleration of the target device, so as to reduce the defects caused by the target device itself error. Verify the validity of the document image according to the displacement parameter of the target device, that is, verify whether the target document is replaced according to the displacement parameter of the target device; The image verifies the legality of the target document; if the document image is not valid, that is, the target device is transferred to another document, and the other document is photographed to obtain the document image, and the target document is replaced with another document, a prompt message will be output The prompt information is used to prompt to re-shoot the target certificate, so as to avoid the target certificate being replaced and affect the verification of the certificate image, and the accuracy of the legality verification of the target certificate can be improved.

An embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, the computer program includes program instructions, when the program instructions are executed by a processor, the implementation is shown in FIG. 1 and FIG. 8. The certificate verification method shown in the embodiment. For example, when the program instructions are executed by the processor, the following steps may be performed: during the process of the target device photographing the target document, the target acceleration of the target device is obtained; the target device photographs the target document Previously, the location information of the target device was aligned with the location information of the target certificate; the certificate image obtained by the target device shooting the target certificate was acquired; the target was determined according to the target acceleration of the target device The displacement parameter of the device; verify the validity of the credential image according to the displacement parameter of the target device; if the credential image is valid, verify the legitimacy of the target credential according to the credential image; If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential. Optionally, when the program instructions are executed by the processor, other steps of the method in the foregoing embodiment may be implemented, which will not be repeated here. Further optionally, the storage medium involved in this application, such as a computer-readable storage medium, may be non-volatile or volatile.

The computer-readable storage medium may be an internal storage unit of the electronic device described in any of the foregoing embodiments, such as a hard disk or a memory of a control device. The computer-readable storage medium may also be an external storage device of the control device, for example, a plug-in hard disk equipped on the control device, a smart memory card (Smart Media Card, SMC), and a secure digital (Secure Digital, SD) ) Card, Flash Card, etc. Further, the computer-readable storage medium may also include both an internal storage unit of the control device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the control device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of both, in order to clearly illustrate the hardware and software Interchangeability, in the above description, the composition and steps of each example have been generally described in accordance with the function. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application. Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the control device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed control device and method may be implemented in other ways. For example, the device embodiments described above are illustrative. For example, the division of the units may be a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (20)

1. A certificate verification method, which includes:

   During the process of the target device photographing the target certificate, the target acceleration of the target device is acquired; before the target device photographs the target certificate, the position information of the target device and the position information of the target certificate In alignment

   Acquiring a credential image obtained by shooting the target credential by the target device;

   Determining the displacement parameter of the target device according to the target acceleration of the target device;

   Verify the validity of the credential image according to the displacement parameter of the target device;

   If the credential image is valid, verify the legitimacy of the target credential according to the credential image;

   If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential.
2. The method according to claim 1, wherein the target acceleration of the target device includes acceleration in a first direction, acceleration in a second direction, and acceleration in a third direction; the method further comprises:

   Performing summation processing on the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction to obtain a candidate acceleration;

   Remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration;

   If the target acceleration is greater than a preset acceleration threshold, the step of determining the displacement parameter of the target device according to the target acceleration is performed.
3. The method according to claim 2, wherein the target acceleration is the acceleration of the target device in a preset time period;

   The determining the displacement parameter of the target device according to the target acceleration includes:

   Performing integration processing on the target acceleration according to the preset time period to obtain the speed of the target device;

   Perform integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device.
4. The method according to claim 3, wherein the target acceleration includes the acceleration of the target device in a first time period and the acceleration of the target device in a second time period, and the first time period and the second time period Both time periods belong to the preset time period;

   The performing integration processing on the target acceleration according to the preset time period to obtain the speed of the target device includes:

   Performing integration processing on the acceleration in the first time period according to the first time period to obtain a first candidate speed;

   Performing integration processing on the acceleration in the second time period according to the second time period to obtain a second candidate speed;

   Acquiring half of the difference between the first candidate speed and the second candidate speed;

   If the first candidate speed is less than the second candidate speed, sum half of the difference and the first candidate speed to obtain the speed in the second time period;

   If the first candidate speed is greater than or equal to the second candidate speed, sum half of the difference and the second candidate speed to obtain the speed in the first time period;

   The speed of the target device is determined according to the speed of the second time period or the speed of the first time period.
5. The method according to claim 3, wherein the speed of the target device includes the speed of the target device in the first time period and the speed of the target device in the second time period;

   The performing integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device includes:

   Performing integration processing on the velocity in the first time period according to the first time period to obtain a first candidate displacement;

   Performing integration processing on the velocity in the second time period according to the second time period to obtain a second candidate displacement;

   Obtaining half of the difference between the first candidate displacement and the second candidate displacement;

   If the first candidate displacement is smaller than the second candidate displacement, sum up half of the difference and the first candidate displacement to obtain the displacement in the second time period;

   If the first candidate displacement is greater than or equal to the second candidate displacement, sum half of the difference and the second candidate displacement to obtain the displacement in the first time period;

   The displacement parameter of the target device is determined according to the displacement in the second time period or the displacement in the first time period.
6. The method according to claim 1, wherein the verifying the validity of the credential image according to the displacement parameter of the target device comprises:

   Judging whether the displacement parameter of the target device is greater than a preset displacement threshold;

   If the displacement parameter of the target device is less than or equal to the preset displacement threshold, it is determined that the credential image is valid;

   If the displacement parameter of the target device is greater than the preset displacement threshold, it is determined that the credential image is not valid.
7. The method according to claim 1, wherein the verifying the legality of the target document according to the document image comprises:

   Extracting target feature information from the document image;

   Obtain the sample feature information set corresponding to the sample certificate image of the certificate;

   Matching the target feature information with the sample feature information in the sample feature information set;

   If the target characteristic information matches the target sample characteristic information in the sample characteristic information set, it is determined that the target certificate is legal;

   If the target characteristic information does not match any sample characteristic information in the sample characteristic information set, it is determined that the target certificate does not have legitimacy.
8. A certificate verification device, which includes:

   The first acquisition module is configured to acquire the target acceleration of the target device during the process of the target device photographing the target certificate; before the target device photographs the target certificate, the location information of the target device is the same as The position information of the target certificate is in an aligned state;

   The second acquisition module is configured to acquire a credential image obtained by shooting the target credential by the target device;

   A determining module, configured to determine the displacement parameter of the target device according to the target acceleration of the target device;

   The first verification module is configured to verify the validity of the credential image according to the displacement parameter of the target device;

   The second verification module is configured to verify the validity of the target certificate according to the certificate image if the certificate image is valid;

   The output module is configured to output prompt information if the credential image is not valid, and the prompt information is used to prompt to re-shoot the target credential.
9. An electronic device, including: a processor, a memory, and a network interface;

   The processor is connected to a memory and a network interface, where the network interface is used to provide data communication functions, the memory is used to store program codes, and the processor is used to call the program codes to perform the following steps:

   During the process of the target device photographing the target certificate, the target acceleration of the target device is acquired; before the target device photographs the target certificate, the position information of the target device and the position information of the target certificate In alignment

   Acquiring a credential image obtained by shooting the target credential by the target device;

   Determining the displacement parameter of the target device according to the target acceleration of the target device;

   Verify the validity of the credential image according to the displacement parameter of the target device;

   If the credential image is valid, verify the legitimacy of the target credential according to the credential image;

   If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential.
10. The electronic device according to claim 9, wherein the target acceleration of the target device includes acceleration in a first direction, acceleration in a second direction, and acceleration in a third direction; and the processor is further configured to execute:

    Performing summation processing on the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction to obtain a candidate acceleration;

    Remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration;

    If the target acceleration is greater than a preset acceleration threshold, the step of determining the displacement parameter of the target device according to the target acceleration is performed.
11. The electronic device according to claim 10, wherein the target acceleration is an acceleration of the target device within a preset time period;

    When determining the displacement parameter of the target device according to the target acceleration, specifically execute:

    Performing integration processing on the target acceleration according to the preset time period to obtain the speed of the target device;

    Perform integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device.
12. The electronic device according to claim 11, wherein the target acceleration includes the acceleration of the target device in a first time period and the acceleration of the target device in a second time period, the first time period and the The second time period belongs to the preset time period;

    When performing integration processing on the target acceleration according to the preset time period to obtain the speed of the target device, specifically execute:

    Performing integration processing on the acceleration in the first time period according to the first time period to obtain a first candidate speed;

    Performing integration processing on the acceleration in the second time period according to the second time period to obtain a second candidate speed;

    Acquiring half of the difference between the first candidate speed and the second candidate speed;

    If the first candidate speed is less than the second candidate speed, sum half of the difference and the first candidate speed to obtain the speed in the second time period;

    If the first candidate speed is greater than or equal to the second candidate speed, sum half of the difference and the second candidate speed to obtain the speed in the first time period;

    The speed of the target device is determined according to the speed of the second time period or the speed of the first time period.
13. The electronic device according to claim 11, wherein the speed of the target device comprises the speed of the target device in the first time period and the speed of the target device in the second time period;

    When performing integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device, specifically execute:

    Performing integration processing on the velocity in the first time period according to the first time period to obtain a first candidate displacement;

    Performing integration processing on the velocity in the second time period according to the second time period to obtain a second candidate displacement;

    Obtaining half of the difference between the first candidate displacement and the second candidate displacement;

    If the first candidate displacement is smaller than the second candidate displacement, sum up half of the difference and the first candidate displacement to obtain the displacement in the second time period;

    If the first candidate displacement is greater than or equal to the second candidate displacement, sum half of the difference and the second candidate displacement to obtain the displacement in the first time period;

    The displacement parameter of the target device is determined according to the displacement in the second time period or the displacement in the first time period.
14. The electronic device according to claim 9, wherein when the validity of the credential image is verified according to the displacement parameter of the target device, the following is specifically executed:

    Judging whether the displacement parameter of the target device is greater than a preset displacement threshold;

    If the displacement parameter of the target device is less than or equal to the preset displacement threshold, it is determined that the credential image is valid;

    If the displacement parameter of the target device is greater than the preset displacement threshold, it is determined that the credential image is not valid.
15. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, the computer program includes program instructions, and when the program instructions are executed by a processor, the following steps are performed:

    During the process of the target device photographing the target certificate, the target acceleration of the target device is acquired; before the target device photographs the target certificate, the position information of the target device and the position information of the target certificate In alignment

    Acquiring a credential image obtained by shooting the target credential by the target device;

    Determining the displacement parameter of the target device according to the target acceleration of the target device;

    Verify the validity of the credential image according to the displacement parameter of the target device;

    If the credential image is valid, verify the legitimacy of the target credential according to the credential image;

    If the credential image is not valid, a prompt message is output, and the prompt information is used to prompt to re-shoot the target credential.
16. The computer-readable storage medium according to claim 15, wherein the target acceleration of the target device includes acceleration in a first direction, acceleration in a second direction, and acceleration in a third direction; when the program instructions are processed It is also used to execute:

    Performing summation processing on the acceleration in the first direction, the acceleration in the second direction, and the acceleration in the third direction to obtain a candidate acceleration;

    Remove the gravitational acceleration from the candidate acceleration to obtain the target acceleration;

    If the target acceleration is greater than a preset acceleration threshold, the step of determining the displacement parameter of the target device according to the target acceleration is performed.
17. The computer-readable storage medium according to claim 16, wherein the target acceleration is an acceleration of the target device within a preset time period;

    When determining the displacement parameter of the target device according to the target acceleration, specifically execute:

    Performing integration processing on the target acceleration according to the preset time period to obtain the speed of the target device;

    Perform integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device.
18. The computer-readable storage medium according to claim 17, wherein the target acceleration comprises an acceleration of the target device in a first time period and an acceleration of the target device in a second time period, the first time period And the second time period belong to the preset time period;

    When performing integration processing on the target acceleration according to the preset time period to obtain the speed of the target device, specifically execute:

    Performing integration processing on the acceleration in the first time period according to the first time period to obtain a first candidate speed;

    Performing integration processing on the acceleration in the second time period according to the second time period to obtain a second candidate speed;

    Acquiring half of the difference between the first candidate speed and the second candidate speed;

    If the first candidate speed is less than the second candidate speed, sum half of the difference and the first candidate speed to obtain the speed in the second time period;

    If the first candidate speed is greater than or equal to the second candidate speed, sum half of the difference and the second candidate speed to obtain the speed in the first time period;

    The speed of the target device is determined according to the speed of the second time period or the speed of the first time period.
19. 18. The computer-readable storage medium according to claim 17, wherein the speed of the target device includes the speed of the target device in the first time period and the speed of the target device in the second time period;

    When performing integration processing on the speed of the target device according to the preset time period to obtain the displacement parameter of the target device, specifically execute:

    Performing integration processing on the velocity in the first time period according to the first time period to obtain a first candidate displacement;

    Performing integration processing on the velocity in the second time period according to the second time period to obtain a second candidate displacement;

    Obtaining half of the difference between the first candidate displacement and the second candidate displacement;

    If the first candidate displacement is smaller than the second candidate displacement, sum up half of the difference and the first candidate displacement to obtain the displacement in the second time period;

    If the first candidate displacement is greater than or equal to the second candidate displacement, sum half of the difference and the second candidate displacement to obtain the displacement in the first time period;

    The displacement parameter of the target device is determined according to the displacement in the second time period or the displacement in the first time period.
20. 15. The computer-readable storage medium according to claim 15, wherein when verifying the validity of the credential image according to the displacement parameter of the target device, the following is specifically executed:

    Judging whether the displacement parameter of the target device is greater than a preset displacement threshold;

    If the displacement parameter of the target device is less than or equal to the preset displacement threshold, it is determined that the credential image is valid;

    If the displacement parameter of the target device is greater than the preset displacement threshold, it is determined that the credential image is not valid.

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