WO2019011108A1

WO2019011108A1 - Iris recognition method and related product

Info

Publication number: WO2019011108A1
Application number: PCT/CN2018/091873
Authority: WO
Inventors: 周意保; 张学勇; 周海涛; 唐城
Original assignee: Oppo广东移动通信有限公司
Priority date: 2017-07-14
Filing date: 2018-06-19
Publication date: 2019-01-17
Also published as: CN107403148A; CN107403148B

Abstract

Provided are an iris recognition method and a related product, the method comprising: after receiving an operation instruction for starting iris recognition, a mobile terminal (100) informing, via a processor (110), an iris recognition module (120) to acquire a first iris image of a user and a first angle; and then, the processor (110) querying, according to the first angle, a plurality of iris image templates stored in the mobile terminal so as to find out a target iris image template corresponding to the first angle, then matching the first iris image with the target iris image template, and if matching is successful, determining that the user passes iris recognition. Therefore, by means of the method, according to an angle when a user inputs an iris image, an iris image template corresponding to the angle can be matched, so that the success rate of iris recognition and the recognition speed are improved.

Description

Iris recognition method and related products

Technical field

The present invention relates to the field of mobile terminal technologies, and in particular, to an iris recognition method and related products.

Background technique

With the development of mobile terminal technology, mobile terminals have played an increasingly important role in people's lives. In life, it has become more and more convenient to use mobile terminals for payment, office and other activities.

However, while mobile terminals bring convenience to people's lives, they also pose threats of information security and threats to property security. In order to improve the security level of the mobile terminal, the fingerprint recognition technology is applied to the mobile terminal. After the fingerprint verification is passed, the user can perform operations such as paying and checking the mailbox, and the security level of the mobile terminal is improved to some extent.

However, with the wide application of fingerprint recognition technology, security vulnerabilities for fingerprint recognition, such as fake fingers, fingerprint films, etc., have emerged; therefore, fingerprint recognition is insufficient to ensure the security of user mobile terminals.

Summary of the invention

The embodiment of the invention provides an iris recognition method and related products, which can match the iris image template of the corresponding angle according to the angle of the iris image input by the user, thereby improving the success rate and recognition speed of the iris recognition.

A first aspect of the embodiments of the present invention discloses a mobile terminal, where the mobile terminal includes a processor and an iris recognition module, the processor is connected to the iris recognition module, and the iris recognition module includes an infrared fill light. And an infrared camera, where

The processor is configured to notify the iris recognition module to acquire an iris image and angle information of the user after receiving an operation instruction for starting iris recognition;

The iris recognition module is configured to acquire a first angle and a current first iris image, and transmit the first angle and the first iris image to the processor; the first angle is a current user An angle formed by a line connecting the eye with the infrared camera and a central axis of the infrared camera;

The processor is further configured to query, according to the first angle, more than one iris image template stored by the mobile terminal to acquire a target iris image template corresponding to the first angle;

The processor is further configured to match the first iris image with the target iris image template, and if the matching is successful, confirm that the user recognizes through the iris.

A second aspect of the embodiments of the present invention discloses an iris recognition method, including:

Receiving an operation instruction for starting iris recognition;

Obtaining a first angle and a current first iris image; the first angle is an angle formed by a line connecting the eye of the current user to the camera and a central axis of the camera;

Querying, according to the first angle, more than one iris image template stored by the mobile terminal to acquire a target iris image template corresponding to the first angle;

Matching the first iris image with the target iris image template, and if the matching is successful, confirming that the user recognizes through the iris.

A third aspect of the embodiment of the present invention discloses a mobile terminal, including:

a processing unit, configured to notify the iris recognition unit to acquire the iris image and the angle information of the user after receiving the operation instruction for starting the iris recognition;

The iris recognition unit is configured to acquire a first angle and a current first iris image, and transmit the first angle and the first iris image to the processing unit; the first angle is an eye of a current user An angle formed by a line connecting the iris recognition unit and a central axis of the iris recognition unit;

The processing unit is further configured to query, according to the first angle, more than one iris image template stored by the mobile terminal to acquire a target iris image template corresponding to the first angle;

The processing unit is further configured to match the first iris image with the target iris image template, and if the matching is successful, confirm that the user recognizes through the iris.

A fourth aspect of the embodiments of the present invention discloses a mobile terminal, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to Executed by the processor, the program includes instructions for performing the steps in the method disclosed in the second aspect above.

A fifth aspect of an embodiment of the present invention discloses a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute the method of the second aspect, the computer Including mobile terminals.

A sixth aspect of an embodiment of the present invention discloses a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the present invention Some or all of the steps described in any of the methods of the second aspect of the embodiments. The computer program product can be a software installation package, the computer comprising a mobile terminal.

In the embodiment of the present invention, after receiving the operation instruction for starting the iris recognition, the mobile terminal notifies the iris recognition module to acquire the first iris image and the first angle of the user; and then the processor queries the mobile terminal for storage according to the first angle. The plurality of iris image templates are used to find the target iris image template corresponding to the first angle, and then the first iris image is matched with the target iris image template. If the matching is successful, the user is confirmed to have passed the iris recognition. It can be seen that, in the embodiment of the present invention, the iris image template corresponding to the angle can be matched according to the angle of the iris image input by the user, and the success rate and recognition speed of the iris recognition are improved.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying for inventive labor.

1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

2 is a schematic diagram of a scene of iris recognition according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an image of an eye region at different angles according to an embodiment of the present invention; FIG.

FIG. 4 is a schematic structural diagram of another mobile terminal according to an embodiment of the present disclosure;

FIG. 5 is a schematic flowchart diagram of an iris recognition method according to an embodiment of the present invention;

FIG. 6 is a schematic flowchart diagram of another iris recognition method according to an embodiment of the present invention;

FIG. 7 is a schematic flowchart diagram of still another iris recognition method according to an embodiment of the present invention; FIG.

FIG. 8 is a structural block diagram of a functional unit of a mobile terminal according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another mobile terminal according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail with reference to the accompanying drawings, in which . All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first", "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, and are not intended to describe a specific order. Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or, optionally, Other steps or units inherent to these processes, methods or devices.

The mobile terminal involved in the embodiments of the present invention may include various handheld devices, wireless devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user equipment (User Equipment, UE), mobile station (MS), terminal device, and the like. For convenience of description, the devices mentioned above are collectively referred to as mobile terminals. The embodiments of the present invention are described below with reference to the accompanying drawings.

The embodiment of the invention provides an iris recognition method and related products, which can match the iris image template of the corresponding angle according to the angle of the iris image input by the user, thereby improving the success rate and recognition speed of the iris recognition. The details are described below separately.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a mobile terminal 100 according to an embodiment of the present invention. The mobile terminal 100 includes a processor 110 and an iris recognition module 120. The processor 110 is connected to the iris recognition module 120 via a bus 130, so that the processor 110 and the iris recognition module 120 can communicate with each other.

In the embodiment of the present invention, the processor may be a central processing unit (CPU). In some embodiments, it may also be referred to as an application processor (AP) to distinguish from the baseband processor.

In the embodiment of the present invention, the iris recognition module 120 includes an infrared fill light and an infrared camera. When the iris is recognized, the infrared fill light emits infrared light on the iris, and is reflected back to the infrared camera through the iris, so that the infrared camera can collect Go to the iris image.

In the embodiment of the present invention, the processor 110 is configured to notify the iris recognition module 120 to acquire the iris image and the angle information of the user after receiving the operation instruction for starting the iris recognition.

The iris recognition module 120 is configured to acquire a first angle and a current first iris image, and transmit the first angle and the first iris image to the processor 110; the first angle is a connection between the current user's eyes and the infrared camera The angle formed by the line and the center axis of the infrared camera.

The processor 110 is further configured to query, according to the first angle, more than one iris image template stored by the mobile terminal 100 to acquire a target iris image template corresponding to the first angle.

The processor 110 is further configured to match the first iris image with the target iris image template, and if the matching is successful, confirm that the user recognizes through the iris.

In the embodiment of the present invention, in order to ensure the security of the user's private information and property information in the mobile terminal 100, the mobile terminal's operating system or application may be initiated in a scenario such as waking up the mobile terminal, starting a payment application, and paying for an order. Request to call the function of iris recognition. Upon receiving the request to invoke iris recognition, the processor 110 determines that an operational command to initiate iris recognition has been received.

The principle of iris recognition is that the iris has unique texture and speckle information, so the user's personal identification can be performed by matching the texture and spot information of the iris. However, considering that each time the user performs iris recognition, the relative position of the mobile terminal is different, causing the infrared camera to acquire the iris image through a certain angle, which may result in incomplete or distortion of the texture and speckle information on the acquired iris, resulting in iris recognition. The speed is slow and even the recognition fails.

Therefore, in the embodiment of the present invention, the iris image template acquired by different angles is pre-stored in the mobile terminal, and when the iris recognition is performed, the iris image template corresponding to the angle is used for identification, thereby maximally eliminating the The interference factor caused by the angle problem improves the speed and success rate of iris recognition.

Please refer to FIG. 2. FIG. 2 is a schematic diagram of a scene of iris recognition according to an embodiment of the present invention. According to an embodiment of the invention, the angle 10 in the figure is the first angle. The first angle is the angle formed by the line connecting the user's eyes with the infrared camera 20 and the central axis of the infrared camera.

As an optional implementation manner, the first angle may be an angle between a midpoint of the user's eye region and a line connecting the infrared camera and a central axis of the infrared camera.

Please refer to FIG. 3 together. FIG. 3 is a schematic diagram of an image of an eye region at different angles according to an embodiment of the present invention. As shown in the upper part of Fig. 3, the first case is that the user looks at the infrared camera (the value of the first angle is close to 0°), the longitudinal length (d1) of the exposed area of the eyeball is long, and the area of the iris area is large, so that more can be obtained. The iris information; as shown in the lower part of Fig. 3, the second case is that the user looks down at the infrared camera (for example, the value of the first angle is 40°), the longitudinal length (d2) of the exposed area of the eyeball is shorter, and the area of the iris is shorter. The area is small and the iris information obtained is less. In the related iris recognition method, the second case is likely to cause the iris recognition to fail because the acquired iris information is less; and in the embodiment of the present invention, the iris image acquired in the second case is the same as The iris image template at the angle is matched, and the data amount of the iris information is equivalent. Therefore, when the feature matching rate of the current iris image is higher than the preset threshold under the premise of the data amount, the iris recognition of the user can be determined, thereby Improve the success rate of iris recognition. In addition, since the iris image corresponds to the angle, even if the feature of the current iris image and the feature of the iris image template are successfully matched, the angle of the current iris image is different from the angle of the iris image template, and the recognition cannot be passed. It is ensured that the iris recognition method of the embodiment of the invention has high security.

As an optional implementation manner, the data of the eye area of the user may be acquired and stored in the mobile terminal 100, wherein the data of the eye area includes the area of the eye area and the midpoint of the eye area. Wait. When the iris recognition is performed, the mobile terminal 100 acquires the facial image of the user through the infrared camera, and crops the image of the eye region; then, according to the ratio of the area of the currently acquired eye region image to the area of the stored eye region and the infrared The distance between the camera and the human body calculates the size of the first angle.

In the embodiment of the present invention, after the processor 100 acquires the first angle of the iris recognition by the current user, the preset iris image template database is queried according to the first angle to obtain the target iris image template corresponding to the first angle; The current user's first iris image is matched with the target iris image template. If the matching is successful, it is determined that the user has passed the iris recognition.

As an optional implementation manner, when querying the iris image template corresponding to the first angle, the angle value of the angular range close to the first angle may be queried to improve the success rate of the iris recognition. For example, if the first angle is 42°, the iris image template in the range of 40° to 45° can be queried as the target iris image template.

It can be seen that the mobile terminal 100 described in FIG. 1 can match the iris image template of the corresponding angle according to the angle of the iris image input by the user, thereby eliminating the adverse effect of the iris information missing and the iris image distortion caused by the angle problem. Improve the speed and success rate of iris recognition.

Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of another mobile terminal 400 according to an embodiment of the present invention. The mobile terminal shown in FIG. 4 can be obtained on the basis of the mobile terminal shown in FIG. 1. Compared with the mobile terminal described in FIG. 1, the mobile terminal shown in FIG. 4 further includes a display screen 140, and the display screen 140 is also The bus 130 is coupled to communicate with the processor 110 and the iris recognition module 120.

In the embodiment of the present invention, the iris recognition module 120 is further configured to acquire a second iris image of the user and a second angle corresponding to the second iris image, and the second iris image and the mobile terminal 400 are in an awake state. The second angle is transmitted to the processor 110; the second angle is an angle formed by the connection between the user's eyes and the infrared camera and the central axis of the infrared camera when the second iris image is input.

The processor 110 is further configured to store a correspondence between the second iris image and the second angle, and store the second iris image as an iris image template.

The processor 110 is further configured to notify the display screen 140 to output prompt information to prompt the user to adjust the relative position with the infrared camera if the target iris image template is not included in the more than one iris image template stored by the mobile terminal 400.

The display screen 140 is configured to output the above prompt information.

The processor 110 is further configured to: when the user adjusts the relative position with the infrared camera and passes the iris recognition, the corresponding relationship between the first iris image and the first angle is stored, and the first iris image is stored as an iris image template.

According to the operations implemented by the processor 110, the iris recognition module 120, and the display screen 140, the mobile terminal 400 can continuously acquire the iris images of the user at different angles while in the awake state, and obtain the obtained angle information and the iris. The image is stored as an iris information template, so that when the user performs iris recognition later, the iris image template can be rich and different angles to meet the needs of the user for iris recognition through different angles.

As an optional implementation manner, when the mobile terminal 400 is in the awake state, the iris image information and the corresponding angle information may be acquired at a certain time to reduce the power consumption of the mobile terminal.

As an optional implementation manner, when the iris image of the same angle is acquired multiple times, the mobile terminal 400 may perform combined denoising processing on the acquired multiple iris images to improve the accuracy of the iris image template.

As an optional implementation manner, in acquiring the first angle and the first iris image, the iris is specifically used by the module 120 to: crop the image of the eye region from the facial image acquired by the infrared camera, and then the eye The region image is subjected to edge extraction to acquire a first iris image.

It can be seen that, by using the mobile terminal described in FIG. 4, the iris image template corresponding to the angle can be matched according to the angle of the iris image input by the user, thereby eliminating the adverse effect of the iris information missing and the iris image distortion caused by the angle problem. In addition, the mobile terminal can continuously acquire the iris image of the user at different angles to expand the iris information template library, so that the user can have rich and different when performing iris recognition later. Angle iris image templates to meet the needs of users for iris recognition through more different angles.

Please refer to FIG. 5. FIG. 5 is a schematic flowchart diagram of an iris recognition method according to an embodiment of the present invention. The iris recognition method can be performed by the mobile terminal. As shown in FIG. 5, the iris recognition method can include:

501. Receive an operation instruction for starting iris recognition.

In the embodiment of the present invention, in order to ensure the security of the user's private information and property information in the mobile terminal, the mobile terminal's operating system or application may initiate a request in a scenario such as waking up the mobile terminal, starting a payment application, and paying for an order. To call the function of iris recognition. Upon receiving the request to invoke iris recognition, the mobile terminal determines that an operation command to initiate iris recognition has been received.

502. Acquire a first angle and a current first iris image.

In the embodiment of the present invention, the first angle is an angle formed by a line connecting the eye of the current user and the camera with a central axis of the camera. Wherein, the camera is a camera for acquiring an iris image of a user. As an optional implementation manner, the mobile terminal has an iris recognition module, and the iris recognition module is composed of an infrared camera and an infrared fill light, and the camera is iris recognition. The infrared camera of the module.

Please refer to FIG. 2. FIG. 2 is a schematic diagram of a scene of iris recognition according to an embodiment of the present invention. According to an embodiment of the invention, the angle 10 in the figure is the first angle. The first angle is the angle formed by the connection between the user's eyes and the infrared camera and the central axis of the infrared camera.

503. Query, according to the first angle, more than one iris image template stored by the mobile terminal to obtain a target iris image template corresponding to the first angle.

504. Match the first iris image with the target iris image template. If the matching is successful, confirm that the user recognizes through the iris.

It can be seen that, by using the iris recognition method described in FIG. 5, the iris image template corresponding to the angle can be matched according to the angle of the iris image input by the user, thereby eliminating the missing iris information and the distortion of the iris image due to the angle problem. Influence, improve the speed and success rate of iris recognition.

Please refer to FIG. 6. FIG. 6 is a schematic flowchart diagram of another iris recognition method according to an embodiment of the present invention. The iris recognition method can be performed by the mobile terminal. As shown in FIG. 6, the iris recognition method can include:

601. When the mobile terminal is in an awake state, acquire a second iris image of the user and a second angle corresponding to the second iris image.

In the embodiment of the present invention, the second angle is an angle formed by the connection between the user's eyes and the camera and the central axis of the camera when the second iris image is input.

602. Store a correspondence between the second iris image and the second angle, and store the second iris image as an iris image template.

According to

steps

601 and 602, the mobile terminal can continuously acquire the iris image of the user at different angles while in the awake state, and store the acquired angle information and the iris image as an iris information template, so that the user can perform iris recognition later. At the same time, there can be rich and different angles of iris image templates to meet the needs of users for iris recognition through different angles.

As an optional implementation manner, when the mobile terminal is in the awake state, the iris image information and the corresponding angle information may be acquired at a certain time to reduce the power consumption of the mobile terminal.

As an optional implementation manner, when the mobile terminal acquires the iris image of the same angle multiple times, the obtained plurality of iris images may be combined and denoised to improve the accuracy of the iris image template.

603. Receive an operation instruction for starting iris recognition.

604. Acquire a first angle and a current first iris image.

605. Query more than one iris image template stored by the mobile terminal according to the first angle to obtain a target iris image template corresponding to the first angle.

606. Match the first iris image with the target iris image template. If the matching is successful, confirm that the user recognizes through the iris.

In the embodiment of the present invention, after the mobile terminal acquires the first angle of the iris recognition by the current user, the preset iris image template database is queried according to the first angle to obtain the target iris image template corresponding to the first angle; The user's first iris image is matched with the target iris image template. If the matching is successful, it is determined that the user has passed the iris recognition.

It can be seen that, by using the iris recognition method described in FIG. 6, the iris image template corresponding to the angle can be matched according to the angle of the iris image input by the user, thereby eliminating the missing iris information and the distortion of the iris image due to the angle problem. Influence, improve the speed and success rate of iris recognition; in addition, the mobile terminal can continuously acquire the iris image of the user at different angles to expand the iris information template library, so that the user can have rich, Iris image templates at different angles to meet the needs of users for iris recognition through more different angles.

Please refer to FIG. 7. FIG. 7 is a schematic flowchart diagram of still another iris recognition method according to an embodiment of the present invention. The iris recognition method can be applied to a mobile terminal including a processor, an iris recognition module, and a display screen. As shown in FIG. 7, the iris recognition method may include the following steps:

701. After receiving the operation instruction of the iris recognition, the processor notifies the iris recognition module to acquire the iris image and the angle information of the user.

702. The iris recognition module acquires the first angle and the current first iris image, and transmits the first angle and the first iris image to the processor.

703. The processor queries a storage space of the mobile terminal according to the first angle to determine whether the mobile terminal includes a target iris image template corresponding to the first angle.

704. If not included, the display screen is notified to output a prompt message to prompt the user to adjust the relative position with the infrared camera.

705. The display screen outputs the above prompt information.

706. The processor stores a correspondence between the first iris image and the first angle when the user passes the iris recognition after adjusting the relative position of the infrared camera, and stores the first iris image as an iris image template.

In the embodiment of the present invention, after the user passes the iris authentication, the mobile terminal stores the first angle not included in the mobile terminal and the first iris image corresponding to the first angle, thereby expanding the iris image template at different angles in the mobile terminal, so that When the user performs iris recognition later, there may be rich and different angle iris image templates to meet the needs of the user for iris recognition through more different angles.

It can be seen that, by using the iris recognition method described in FIG. 7, the iris image template corresponding to the angle can be matched according to the angle of the iris image input by the user, thereby eliminating the missing iris information and the distortion of the iris image due to the angle problem. Influence, improve the speed and success rate of iris recognition; in addition, the mobile terminal can continuously acquire the iris image of the user at different angles to expand the iris information template library, so that the user can have rich, Iris image templates at different angles to meet the needs of users for iris recognition through more different angles.

Please refer to FIG. 8. FIG. 8 is a structural block diagram of a functional unit of a mobile terminal 800 according to an embodiment of the present invention. As shown in FIG. 8, the mobile terminal 800 may include a processing unit 801 and an iris recognition unit 802, where:

The processing unit 801 is configured to notify the iris recognition unit 802 to acquire the iris image and the angle information of the user after receiving the operation instruction for starting the iris recognition.

The iris recognition unit 802 is configured to acquire the first angle and the current first iris image, and transmit the first angle and the first iris image to the processing unit 801.

The processing unit 801 is further configured to query, according to the first angle, more than one iris image template stored by the mobile terminal to acquire a target iris image template corresponding to the first angle.

The processing unit 801 is further configured to match the first iris image with the target iris image template, and if the matching is successful, confirm that the user recognizes through the iris.

It can be understood that, in order to implement the above functions, the mobile terminal includes corresponding hardware structures and/or software modules for performing various functions. Those skilled in the art will readily appreciate that the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The embodiment of the present invention may divide the functional unit into the mobile terminal according to the foregoing method example. For example, each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.

As an optional implementation manner, the processing unit 801 can be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit. , ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. The iris recognition unit 802 can be an iris recognition module including an infrared fill light and an infrared camera.

It can be seen that, by using the mobile terminal described in FIG. 8 , the iris image template corresponding to the angle can be matched according to the angle of the iris image input by the user, thereby eliminating the adverse effect of the iris information missing and the iris image distortion caused by the angle problem. Improve the speed and success rate of iris recognition.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of another mobile terminal 900 according to an embodiment of the present invention. As shown, the mobile terminal includes a processor 901, a memory 902, a communication interface 903, and one or more programs, wherein the one or more programs are stored in a memory and configured to be executed by a processor, the program Instructions are included for performing the steps in the above method embodiments.

For example, the program includes instructions for performing the following steps:

Receiving an operation instruction for starting iris recognition;

Obtaining a first angle and a current first iris image; the first angle is an angle formed by a line connecting a current user's eye and the camera with a central axis of the camera;

As an alternative embodiment, the program further includes instructions for performing the following steps:

When the mobile terminal is in an awake state, acquiring a second iris image of the user and a second angle corresponding to the second iris image; the second angle is an eye of the user when the second iris image is input An angle formed by a line connecting the camera and a central axis of the camera;

And storing a correspondence relationship between the second iris image and the second angle, and storing the second iris image as an iris image template.

In a case that the target iris image template corresponding to the first angle is not included in more than one iris image template stored by the mobile terminal, the prompt information is output to prompt the user to adjust the relative position with the camera;

If the user passes the iris recognition after adjusting the relative position with the camera, storing the correspondence relationship between the first iris image and the first angle, and storing the first iris image as an iris image template.

As an optional implementation manner, in the obtaining the first angle and the current first iris image, the program includes an instruction specifically for performing the following steps:

Extracting an eye region image from a facial image acquired by the camera;

Edge extraction is performed on the eye region image to acquire the first iris image.

In an optional implementation manner, the first angle is an angle between a line connecting the midpoint of the eye region of the current user and the camera to a central axis of the camera.

It can be seen that the mobile terminal described in FIG. 9 can match the iris image template of the corresponding angle according to the angle of the iris image input by the user, thereby eliminating the adverse effect of the iris information missing and the iris image distortion caused by the angle problem. Improve the speed and success rate of iris recognition; in addition, the mobile terminal can continuously acquire the iris image of the user at different angles to expand the iris information template library, so that the user can have rich and different angles when performing iris recognition later. The iris image template is used to meet the needs of users for iris recognition through more different angles.

Please refer to FIG. 10. FIG. 10 is a schematic structural diagram of another mobile terminal 1000 according to an embodiment of the present invention. As shown in FIG. 10, for the convenience of description, only parts related to the embodiment of the present invention are shown. Without specific details, please refer to the method part of the embodiment of the present invention. The terminal can be any mobile terminal including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the mobile terminal is used as a mobile phone as an example:

FIG. 10 is a block diagram showing a partial structure of a mobile phone related to a mobile terminal provided by an embodiment of the present invention. Referring to FIG. 10, the mobile phone includes: a radio frequency (RF) circuit 1001, a memory 1002, an input unit 1003, a display unit 1004, a sensor 1005, an audio circuit 1006, a wireless fidelity (WiFi) module 1007, and a processor 1008. And power supply 1009 and other components. It will be understood by those skilled in the art that the structure of the handset shown in FIG. 10 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.

The following describes the components of the mobile phone in detail with reference to FIG. 10:

The RF circuit 1001 can be used for receiving and transmitting signals during the transmission or reception of information or during a call. Specifically, after receiving the downlink information of the base station, it is processed by the processor 1008. In addition, the uplink data is designed to be sent to the base station. Generally, the RF circuit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 1001 can also communicate with the network and other devices through wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.

The memory 1002 can be used to store software programs and modules, and the processor 1008 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 1002. The memory 1002 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.). Moreover, memory 1002 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1003 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit 1003 may include a touch panel 10031, an iris recognition module 10032, a fingerprint recognition module 10033, and a face recognition module 10034. The touch panel 10031, also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 10031 or near the touch panel 10031. Operation), and drive the corresponding connecting device according to a preset program. Optionally, the touch panel 10031 may include two parts: a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor 1008 is provided and can receive commands from the processor set 1008 and execute them. In addition, the touch panel 10031 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 10031, the input unit 1003 may further include an iris recognition module 10032 for receiving iris information input by the user to identify the identity of the user.

The display unit 1004 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit 1004 can include a display panel 10041. Alternatively, the display panel 10041 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Further, the touch panel 10031 can cover the display panel 10041. After the touch panel 10031 detects a touch operation on or near it, the touch panel 10031 transmits to the processor set 1008 to determine the type of the touch event, and then the processor set 1008 is based on the touch. The type of event provides a corresponding visual output on display panel 10041. Although the touch panel 10031 and the display panel 10041 are used as two independent components to implement the input and input functions of the mobile phone in FIG. 10, in some embodiments, the touch panel 10031 and the display panel 10041 may be integrated. Realize the input and output functions of the phone.

The handset may also include at least one type of sensor 1005, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 10041 according to the brightness of the ambient light, and the proximity sensor may close the display panel 10041 and/or when the mobile phone moves to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.

An audio circuit 1006, a speaker 10061, and a microphone 10062 can provide an audio interface between the user and the handset. The audio circuit 1006 can transmit the converted electrical data of the received audio data to the speaker 10061, and convert it into a sound signal output by the speaker 10061. On the other hand, the microphone 10062 converts the collected sound signal into an electrical signal, and the audio circuit 1006. After receiving, it is converted into audio data, and then processed by the audio data output processor set 1008, sent to, for example, another mobile phone via the RF circuit 1001, or outputted to the memory 1002 for further processing.

WiFi is a short-range wireless transmission technology. The mobile phone can help users to send and receive emails, browse web pages and access streaming media through the WiFi module 1007. It provides users with wireless broadband Internet access. Although FIG. 10 shows the WiFi module 1007, it can be understood that it does not belong to the essential configuration of the mobile phone, and can be omitted as needed within the scope of not changing the essence of the invention.

The processor 1008 is a control center for the handset, and the processor 1008 connects various portions of the entire handset using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 1002, and recalling stored in the memory 1002. Data, perform various functions of the mobile phone and process data to monitor the mobile phone as a whole. Optionally, the processor 1008 may include one or more processing units; preferably, the processor 1008 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 1008.

The mobile phone also includes a power source 1009 (such as a battery) for powering various components. Preferably, the power source can be logically coupled to the processor 1008 through a power management system to manage functions such as charging, discharging, and power management through the power management system.

Although not shown, the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.

In the foregoing embodiments shown in FIG. 5 to FIG. 7, each step method flow can be implemented based on the structure of the mobile phone.

In the foregoing embodiment shown in FIG. 8, each unit function can be implemented based on the structure of the mobile phone.

The embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, the computer program causing the computer to perform some or all of the steps of any of the methods described in the foregoing method embodiments. The computer includes a mobile terminal.

Specifically, in one embodiment of the present invention, a computer readable storage medium is provided, wherein the computer readable storage medium stores a computer program, wherein the computer program causes the computer to:

Receiving an operation instruction for starting iris recognition;

Optionally, before receiving the operation instruction for starting iris recognition, the computer further performs the following operations:

Optionally, the acquiring the first angle and the current first iris image includes:

Extracting an eye region image from a facial image acquired by the camera;

Optionally, the first angle is an angle between a line connecting the midpoint of the eye region of the current user and the camera to a central axis of the camera.

Optionally, after the querying the more than one iris image template stored by the mobile terminal according to the first angle, the calculating further performs the following operations:

Optionally, the acquiring the first angle specifically includes: calculating a size of the first angle according to a ratio of an area of the currently acquired eye region image to an area of the stored eye region and a distance between the infrared camera and the human body.

Embodiments of the present invention also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the operations as recited in the above method embodiments Part or all of the steps of either method. The computer program product can be a software installation package, the computer comprising a mobile terminal.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

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

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a memory. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing memory includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.

A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable memory, and the memory can include: a flash drive , read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, referred to as: RAM), disk or CD.

The embodiments of the present invention have been described in detail above, and the principles and implementations of the present invention are described in detail herein. The description of the above embodiments is only for helping to understand the method of the present invention and its core ideas; It should be understood by those skilled in the art that the present invention is not limited by the scope of the present invention.

Claims

A mobile terminal, comprising: a processor and an iris recognition module, wherein the processor is connected to the iris recognition module, wherein the iris recognition module comprises an infrared fill light and an infrared camera, wherein ,

The processor is configured to notify the iris recognition module to acquire an iris image and angle information of the user after receiving an operation instruction for starting iris recognition;

The iris recognition module is configured to acquire a first angle and a current first iris image, and transmit the first angle and the first iris image to the processor; the first angle is a current user An angle formed by a line connecting the eye with the infrared camera and a central axis of the infrared camera;

The processor is further configured to query, according to the first angle, more than one iris image template stored by the mobile terminal to acquire a target iris image template corresponding to the first angle;

The processor is further configured to match the first iris image with the target iris image template, and if the matching is successful, confirm that the user recognizes through the iris.
The mobile terminal of claim 1, wherein

The iris recognition module is further configured to acquire a second iris image of the user and a second angle corresponding to the second iris image, where the mobile terminal is in an awake state, and the second iris image and Transmitting the second angle to the processor; the second angle is an angle formed by a line connecting a user's eyes and the infrared camera to a central axis of the infrared camera when the second iris image is input;

The processor is further configured to store a correspondence between the second iris image and the second angle, and store the second iris image as an iris image template.
The mobile terminal according to claim 2, wherein in the acquiring the first angle and the current first iris image, the iris recognition module is specifically configured to: obtain a facial image from the infrared camera Cutting an eye region image; performing edge extraction on the eye region image to obtain the first iris image.
The mobile terminal according to any one of claims 1 to 3, wherein the first angle is a connection between a midpoint of an eye region of a current user and the infrared camera and a middle of the infrared camera The angle between the axes.
The mobile terminal according to claim 4, wherein the mobile terminal further comprises a display screen, and the display screen is connected to the processor, wherein

The processor is further configured to: when the more than one iris image template stored by the mobile terminal does not include the target iris image template, notify the display screen to output prompt information to prompt the user to adjust the infrared camera Relative position

The display screen is configured to output the prompt information;

The processor is further configured to: when the user adjusts the relative position with the infrared camera and passes the iris recognition, storing a correspondence between the first iris image and the first angle, and storing the first The iris image is stored as an iris image template.
The mobile terminal according to claim 3, wherein the iris recognition module is specifically configured to: according to an area of an area of an currently acquired eye area image and an area of the stored eye area, and an infrared camera and a human body The distance between the two is calculated as the size of the first angle.
The mobile terminal according to claim 1, wherein the processor is configured to query more than one iris image template stored by the mobile terminal according to an angle range corresponding to the first angle to obtain a corresponding An angle of the target iris image template.
The mobile terminal according to claim 2, wherein the processor is specifically configured to perform synthetic denoising on the acquired plurality of iris images when the iris images of the same angle are acquired multiple times to improve the iris The accuracy of the image template.
The mobile terminal according to any one of claims 1 to 8, wherein the processing is configured to notify the iris recognition module to acquire when detecting that the terminal starts the payment application or the terminal is woken up. User's iris image and angle information.
An iris recognition method, comprising:

Receiving an operation instruction for starting iris recognition;

Obtaining a first angle and a current first iris image; the first angle is an angle formed by a line connecting a current user's eye and the camera with a central axis of the camera;

Querying, according to the first angle, more than one iris image template stored by the mobile terminal to acquire a target iris image template corresponding to the first angle;

Matching the first iris image with the target iris image template, and if the matching is successful, confirming that the user recognizes through the iris.
The method according to claim 10, wherein the method further comprises: before receiving the operation instruction for initiating iris recognition, the method further comprising:

When the mobile terminal is in an awake state, acquiring a second iris image of the user and a second angle corresponding to the second iris image; the second angle is an eye of the user when the second iris image is input An angle formed by a line connecting the camera and a central axis of the camera;

And storing a correspondence relationship between the second iris image and the second angle, and storing the second iris image as an iris image template.
The method according to claim 11, wherein the obtaining the first angle and the current first iris image comprises:

Extracting an eye region image from a facial image acquired by the camera;

Edge extraction is performed on the eye region image to acquire the first iris image.
The method according to any one of claims 10 to 11, wherein the first angle is a clip of a line connecting the midpoint of the eye region of the current user with the camera and a central axis of the camera. angle.
The method according to claim 13, wherein after the querying the more than one iris image template stored by the mobile terminal according to the first angle, the method further comprises:

In a case where the target iris image template corresponding to the first angle is not included in more than one iris image template stored by the mobile terminal, the prompt information is output to prompt the user to adjust the relative position with the camera head;

If the user passes the iris recognition after adjusting the relative position with the camera, storing the correspondence relationship between the first iris image and the first angle, and storing the first iris image as an iris image template.
The method according to claim 12, wherein the acquiring the first angle comprises: calculating a ratio of an area of the currently acquired eye region image to an area of the stored eye region and a distance between the infrared camera and the human body. The size of the first angle.
The method according to claim 10, wherein querying the more than one iris image template stored by the mobile terminal according to the first angle to acquire the target iris image template corresponding to the first angle comprises: according to the first The angle range corresponding to the angle queries more than one iris image template stored by the mobile terminal to acquire a target iris image template corresponding to the first angle.
The method according to claim 11, wherein the method further comprises: performing synthetic denoising on the acquired plurality of iris images when the iris images of the same angle are acquired multiple times to improve the iris image template. The accuracy.
The method according to any one of claims 10 to 17, wherein the iris image and the angle information of the user are acquired when it is detected that the terminal starts the payment application or the terminal is awakened.
A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, wherein the computer program causes the computer to be a method according to any one of claims 10 to 18.