WO2017000342A1

WO2017000342A1 - Fingerprint recognition method and terminal

Info

Publication number: WO2017000342A1
Application number: PCT/CN2015/085820
Authority: WO
Inventors: 杨震皓
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-06-29
Filing date: 2015-07-31
Publication date: 2017-01-05
Also published as: CN105574389A

Abstract

A fingerprint recognition method and a terminal. The fingerprint recognition method comprises: after a fingerprint collection instruction is received, calling a camera of a terminal to acquire a collected image comprising a fingerprint image (101); extracting the fingerprint image from the collected image, and preprocessing the fingerprint image, so as to obtain a compared fingerprint image (102); determining whether the compared fingerprint image matches a pre-set fingerprint image (103); and if the compared fingerprint image matches the pre-set fingerprint image, executing pre-set operations according to pre-set conditions (104). A camera (302) of a terminal (300) is called to acquire a collected image comprising a fingerprint image. Since the camera (302) in the terminal (300) such as a mobile phone and a computer belongs to standard configurations and does not need to be additionally disposed, the utilization of the camera in the terminal is improved, and it is unnecessary to dispose a dedicated mode recognition module in the terminal.

Description

Fingerprint identification method and terminal

The present application claims priority to Chinese Patent Application No. 201510369655.0, entitled "A Fingerprint Identification Method and Terminal", which is incorporated herein by reference. .

Technical field

The present invention relates to the field of fingerprint recognition technologies, and in particular, to a fingerprint identification method and a terminal.

Background technique

With the development of electronic technology, in order to improve security, terminals (such as mobile phones, tablets, etc.) usually integrate fingerprint recognition functions. Through fingerprint recognition, terminals can be unlocked, applications can be launched, or certain functions in the application can be executed. . For example, when the terminal is in standby, the terminal in the locked state can be unlocked by fingerprint recognition, or an application such as WeChat or QQ in the terminal is started, or an application such as fingerprint payment is completed through fingerprint recognition.

Currently, in order to perform fingerprint recognition, a terminal usually needs to set a special fingerprint identification module in the terminal.

The inventor of the present invention found in the research and practice that the traditional fingerprint identification scheme has a high cost because it needs to set a special fingerprint identification module in the terminal.

Summary of the invention

The embodiment of the invention provides a fingerprint identification method and a terminal, and obtains a new fingerprint recognition form, and the function of fingerprint recognition of the terminal can be realized by the camera without adding a fingerprint recognition hardware module. .

A first aspect of the embodiments of the present invention provides a fingerprint identification method, where the method includes:

After receiving the fingerprint collection instruction, the camera of the calling terminal acquires a captured image including the fingerprint image;

Extracting the fingerprint image from the captured image, and preprocessing the fingerprint image to obtain a comparison fingerprint image;

Determining whether the comparison fingerprint image matches a preset fingerprint image;

If the comparison fingerprint image matches the preset fingerprint image, the preset operation is performed according to the preset condition.

A second aspect of the embodiment of the present invention provides a terminal, where the terminal includes:

a camera, configured to acquire a captured image including the fingerprint image after receiving the fingerprint acquisition instruction;

a first processing module, configured to extract the fingerprint image from the captured image, and perform pre-processing on the fingerprint image extracted from the captured image to obtain a comparison fingerprint image;

a determining module, configured to determine whether the comparison fingerprint image matches a preset fingerprint image;

And an execution module, configured to perform a preset operation according to the preset condition if the determination result of the determining module is that the matching fingerprint image matches the preset fingerprint image.

It can be seen that the technical solution of the embodiment of the present invention acquires a captured image including a fingerprint image by calling a camera of the terminal. Since the camera in the terminal such as a mobile phone or a computer is a standard configuration, no additional setting is required, so the technical solution provided by the present invention improves the terminal. The utilization of the middle camera eliminates the need to set up a special pattern recognition module in the terminal.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flowchart of a fingerprint identification method according to an embodiment of the present invention;

2 is a schematic flowchart of another fingerprint identification method according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of setting a preset fingerprint image in another fingerprint identification method according to an embodiment of the present invention; FIG.

FIG. 3 is a schematic flowchart of a fingerprint identification process in another fingerprint identification method according to an embodiment of the present invention; FIG.

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

FIG. 5 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another terminal according to an embodiment of the present invention.

detailed description

The embodiment of the invention provides a fingerprint identification method and a terminal, and uses the camera in the terminal to collect the fingerprint image, thereby eliminating the need to set a special pattern recognition module in the terminal.

In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. 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", "third" and "fourth" 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. Moreover, 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 includes steps or units not listed, or, optionally, Other steps or units inherent to these processes, methods, products or equipment.

An embodiment of the fingerprint identification method of the present invention includes: after receiving a fingerprint acquisition instruction, calling a camera of the terminal to acquire a captured image including a fingerprint image; extracting the fingerprint image from the captured image, and extracting the fingerprint image from the captured image Performing preprocessing on the fingerprint image extracted in the captured image to obtain a comparison fingerprint image; determining whether the comparison fingerprint image matches the preset fingerprint image; if the comparison fingerprint image matches the preset fingerprint image , the preset operation is performed according to the preset condition.

Referring first to FIG. 1, FIG. 1 is a schematic flowchart diagram of a fingerprint identification method according to an embodiment of the present invention. As shown in FIG. 1 , a fingerprint identification method provided by an embodiment of the present invention may include:

101. After receiving the fingerprint collection instruction, the camera of the calling terminal acquires the collected image including the fingerprint image.

In some possible implementation manners of the present invention, when an application is set to use the fingerprint recognition function, and fingerprint recognition is performed in the application, the fingerprint collection instruction is received.

In some possible implementations of the invention, the camera of the terminal may be an auto focus camera.

In some possible implementation manners of the present invention, the captured image acquired by the camera may be detected to determine whether the acquired captured image includes a fingerprint image, and if the fingerprint image is included, a subsequent operation is performed, and if the fingerprint image is not included, the acquired image is reacquired. . Specifically, the captured image can be judged Whether there is a clear ridge line formed by a clear concave-convex shape, and if so, it is determined that the camera acquires a captured image including a fingerprint image.

102. Extract a fingerprint image from the collected image, and perform pre-processing on the fingerprint image extracted from the collected image to obtain a comparison fingerprint image.

In some possible implementations of the present invention, the fingerprint image is extracted from the captured image, and the fingerprint image is pre-processed to obtain a comparison fingerprint image. Specifically, the method may include:

Extracting a fingerprint image from the acquired image;

Separating the background of the fingerprint image to obtain a sixth fingerprint image;

Performing direction information extraction or ridge extraction on the sixth fingerprint image to obtain a seventh fingerprint image;

Performing a binarization process on the seventh fingerprint image to obtain an eighth fingerprint image;

Performing image refinement and repair on the eighth fingerprint image to obtain a ninth fingerprint image;

Extracting feature points from the ninth fingerprint image to obtain a tenth fingerprint image, and the tenth fingerprint image is a comparison fingerprint image.

It should be noted that the image processing performed on the acquired image is not limited to the above image processing process, and other methods may be employed as long as a clear contrast fingerprint image can be obtained from the captured image.

103. Determine whether the comparison fingerprint image matches the preset fingerprint image.

In some possible implementation manners of the present invention, when the matching fingerprint image includes a certain proportion of feature points in the preset fingerprint image, the comparison fingerprint image and the preset fingerprint image may be considered to be matched. For example, it can be set that if the fingerprint image includes more than 80% of the feature points in the preset fingerprint image, it is considered that the matching fingerprint image matches the preset fingerprint image. If the matching fingerprint image includes 85% of the feature points in the preset fingerprint image, it is considered that the matching fingerprint image matches the preset fingerprint image. If the matching fingerprint image includes 60% of the feature points in the preset fingerprint image, it is considered that the comparison fingerprint image does not match the preset fingerprint image. The feature points may be in a fingerprint image: a breakpoint, a cross point, a burr, a short line, or a small ring.

104. If the comparison fingerprint image matches the preset fingerprint image, perform a preset operation according to a preset condition.

The preset condition may be: unlocking the terminal after the fingerprint recognition is passed, and when the comparison fingerprint image matches the preset fingerprint image, the preset operation is: unlocking the locked state terminal, The terminal displays the display interface of the front terminal or the main interface of the display terminal. Of course, the preset condition may also be that after the fingerprint recognition is passed, an application is started, or a certain function in the application is executed, for example, fingerprint payment is completed through fingerprint recognition.

In some possible implementation manners of the present invention, as shown in FIG. 2, the fingerprint identification method may further include:

After receiving the fingerprint acquisition instruction, the camera of the calling terminal acquires an original image including a fingerprint image.

In some possible implementation manners of the present invention, when an application is selected to use the fingerprint recognition function, the fingerprint setting state is entered to obtain a preset fingerprint image, and the fingerprint collection instruction is received.

The camera may be an autofocus camera in the terminal. After receiving the fingerprint acquisition command, the camera of the terminal is activated, the finger fingerprint is aligned with the camera, and the camera acquires an original image including the fingerprint image, which may be acquired in a possible implementation manner. The original image is displayed in the preview box. It should be noted that the fingerprint refers to a line generated by unevenness on the front surface of the finger end of a person's finger. The lines are regularly arranged to form different patterns. Fingerprints are invariant, unique and convenient and can be used for biometric identification. Security can be improved by using fingerprint information in various applications.

In an actual application, an application in the terminal may be used to use the fingerprint recognition function. For example, the terminal may be unlocked by using fingerprint recognition, or an application of the terminal may be activated by using fingerprint recognition, or fingerprint payment may be completed by using fingerprint recognition. Wait.

In some possible implementation manners of the present invention, when an application is selected to use the fingerprint recognition function, the fingerprint setting state is entered to obtain a preset fingerprint image. At this time, the fingerprint of the finger used for fingerprint recognition is performed by using the camera. Take a photo and get the original image including the fingerprint image.

In some possible implementation manners of the present invention, multiple applications may be set to use a fingerprint recognition function, and specifically, each application corresponds to a different fingerprint.

In some possible implementation manners of the present invention, the original image acquired by the camera may be detected to determine whether the captured original image includes a fingerprint image, and if the fingerprint image is included, The image processing operation does not perform an image processing operation if the fingerprint image is not included. Specifically, it can be determined whether there is a clear ridge line formed by a clear concave-convex shape in the original image, and if so, it is determined that the camera acquires the original image including the fingerprint image.

1002. Extract the fingerprint image from the original image, and perform pre-processing on the fingerprint image extracted from the original image to obtain a preset fingerprint image.

Specifically, the original image may be image processed by the CPU of the terminal to obtain a preset fingerprint image.

In some possible implementation manners of the present invention, the original image may be image processed by the following method:

Extracting a fingerprint image from the original image;

Separating the background of the fingerprint image extracted from the original image to obtain a first fingerprint image;

Performing direction information extraction or ridge extraction on the first fingerprint image to obtain a second fingerprint image;

Performing a binarization process on the second fingerprint image to obtain a third fingerprint image;

Performing image refinement and repair on the third fingerprint image to obtain a fourth fingerprint image;

Extracting feature points from the fourth fingerprint image to obtain a fifth fingerprint image, where the fifth fingerprint image is a preset fingerprint image.

It should be noted that the image processing performed on the original image is not limited to the above image processing process, and other methods may be employed as long as a clear preset fingerprint image can be obtained from the original image.

In some possible implementation manners of the present invention, the original image acquired by the camera may be detected to determine whether the captured original image includes a fingerprint image, and if the fingerprint image is included, the image processing operation is performed, if the fingerprint image is not included, Get the original image.

1003. Save the preset fingerprint image in a storage module.

In some possible implementation manners of the present invention, the preset fingerprint picture may be encrypted, encrypted, and saved to the storage module.

It can be seen that the technical solution of the embodiment of the present invention uses the camera in the terminal to acquire an original image including a fingerprint image, and obtains a preset fingerprint image after processing. Since the camera in the terminal such as a mobile phone or a computer is a standard configuration, no additional setting is required. The technical solution provided by the invention improves the utilization rate of the camera in the terminal, and saves the special pattern recognition module in the terminal, thereby saving the cost. In addition, now When a preset fingerprint image is obtained by setting a fingerprint identification module, since the fingerprint identification module is small, in order to obtain complete fingerprint information, multiple acquisitions are required, and the technical solution in the embodiment of the present invention can obtain complete information of the fingerprint at a time through the camera. Improve the efficiency of fingerprint recognition.

To facilitate a better understanding and implementation of the foregoing solution of the embodiments of the present invention, the following is exemplified by some specific application scenarios.

In this embodiment, the preset condition is: when the fingerprint recognition is passed, the terminal is unlocked using fingerprint recognition. The preset operation is: the terminal is unlocked by the locked state. First, a preset fingerprint image needs to be set. When the unlocking is needed, the acquired image is acquired, and the fingerprint image is obtained to determine whether the matching fingerprint image matches the preset fingerprint image. If the matching is performed, the terminal performs an unlocking operation to display the terminal before locking. The display interface or the main interface of the display terminal.

Referring to FIG. 3-a and FIG. 3-b, FIG. 3-a is a schematic flowchart of setting a preset fingerprint image in the embodiment, and FIG. 3-b is a schematic flowchart of the fingerprint identification process in the embodiment. The flow diagram of setting a preset fingerprint image in Figure 3-a includes:

201. Receive an instruction acquisition instruction.

202. Call the camera of the terminal, and the camera acquires the current image.

203. Determine whether a fingerprint image is included in the current image acquired by the camera.

If no, execute 202; if yes, execute 204.

204. Use the current image acquired by the camera as the original image.

205. Perform image processing on the original image, and extract a fingerprint image from the current image as a preset fingerprint image.

206. Perform encryption processing on the preset fingerprint image.

207. Store the encrypted fingerprint image in the storage module.

When the terminal is locked and needs to be unlocked, perform fingerprint identification verification according to the flow shown in Figure 3-b. The flow diagram of verifying the fingerprint image in Figure 3-b includes:

208. Receive a fingerprint collection instruction.

209. Call the camera of the terminal, and obtain the current image after the camera is started.

210. Determine whether the fingerprint image is included in the current image acquired by the camera.

If yes, execute 211; if no, execute 209.

211. Use the current image acquired by the camera as the collected image.

212. Perform image processing on the collected image, and extract a fingerprint image from the collected image as a comparison fingerprint image.

213. Read an encrypted preset fingerprint image from the storage module.

214. Decrypt the encrypted preset fingerprint image.

215. Determine whether the matching fingerprint image matches the decrypted preset fingerprint image.

216. If the comparison fingerprint image matches the preset fingerprint image, unlock the terminal according to the preset condition.

After unlocking, the display interface of the terminal before locking or the main interface of the display terminal is displayed.

It can be seen that the technical solution of the embodiment of the present invention uses the camera in the terminal to acquire an original image including a fingerprint image, and obtains a preset fingerprint image after processing. Since the camera in the terminal such as a mobile phone or a computer is a standard configuration, no additional setting is required. The technical solution provided by the invention improves the utilization rate of the camera in the terminal, and saves the special pattern recognition module in the terminal, thereby saving the cost. In addition, when the preset fingerprint image is obtained by setting the fingerprint identification module in the prior art, since the fingerprint identification module is small, in order to obtain complete fingerprint information, multiple acquisitions are required, and the technical solution in the embodiment of the present invention can obtain the fingerprint at one time through the camera. The complete information improves the efficiency of fingerprint recognition.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 4, a terminal 300 according to an embodiment of the present invention may include:

The instruction receiving module 301 is configured to receive a fingerprint collection instruction.

In a possible implementation manner, if the terminal is unlocked by using fingerprint identification, when the terminal black screen is in standby, the terminal is activated by pressing the power button of the terminal, and the fingerprint collection instruction is triggered, and the instruction receiving module receives the Fingerprint acquisition instructions.

The camera 302 is configured to acquire the captured image including the fingerprint image after the instruction receiving module 301 receives the instruction acquisition instruction.

It should be noted that the camera can be an auto focus camera.

In some possible implementation manners of the present invention, the terminal 300 may further include a determining module, configured to detect the captured image acquired by the camera, determine whether the captured image is included in the acquired captured image, and if the fingerprint image is included, The collected image is transmitted to the first processing module 303; If the fingerprint image is not included, the captured image is reacquired. Specifically, it can be determined whether there is a clear ridge line formed by the clear concave and convex shape in the captured image, and if so, it is determined that the captured image obtained by the camera is a captured image including the fingerprint image.

The first processing module 303 is configured to extract a fingerprint image from the acquired image, and preprocess the fingerprint image as a comparison image.

In some possible implementation manners of the present invention, the first processing module 303 is specifically configured to:

Extracting a fingerprint image from the acquired image;

The determining module 304 is configured to determine whether the comparison fingerprint image matches the preset fingerprint image.

The executing module 305 is configured to perform a preset operation according to a preset condition if the determination result of the determining module is that the matching fingerprint image matches the preset fingerprint image.

The preset condition may be: after the fingerprint recognition is performed, the terminal is unlocked, and when the comparison fingerprint image matches the preset fingerprint image, the execution module 305 unlocks the locked state terminal, and displays the terminal display interface before the terminal locks or Displays the main interface of the terminal. Of course, the preset condition may also be that after the fingerprint recognition is passed, an application is started, or a certain function in the application is executed, for example, Fingerprint recognition completes fingerprint payment and the like.

In some possible implementation manners of the present invention, as shown in FIG. 5, the terminal 300 may further include:

a second processing module 306, configured to extract a fingerprint image from the original image, and perform pre-processing on the fingerprint image extracted from the original image to obtain a preset fingerprint image;

It should be noted that, in some possible implementation manners of the present invention, when an application is selected to use the fingerprint recognition function, the preset fingerprint image is acquired first, and then the instruction receiving module 301 receives the fingerprint collection instruction. The camera 302 is then activated, the finger fingerprint is aligned with the camera 302, and the camera 302 acquires the original image including the fingerprint image, which may be displayed in the display of the terminal 300 in a possible embodiment. In some possible implementation manners of the present invention, the second processing module 306 may perform image processing on the original image by using the following method:

Extracting a fingerprint image from the original image;

Separating the background of the fingerprint image to obtain a first fingerprint image;

In some possible implementation manners of the present invention, the terminal 300 may further include a determining module, configured to detect an original image acquired by the camera, determine whether the acquired original image includes a fingerprint pattern, and if the fingerprint pattern is included, perform The image processing operation does not perform an image processing operation if the fingerprint pattern is not included, and reacquires the original image.

It can be seen that the technical solution of the embodiment of the present invention uses the camera in the terminal to acquire the fingerprint image. The original image of the image is processed to obtain a preset fingerprint image. Since the camera in the terminal such as a mobile phone or a computer is a standard configuration, no additional setting is required, so the technical solution provided by the present invention improves the utilization rate of the camera in the terminal, and saves the A special pattern recognition module is set in the terminal, which saves cost. In addition, when the preset fingerprint image is obtained by setting the fingerprint identification module in the prior art, since the fingerprint identification module is small, in order to obtain complete fingerprint information, multiple acquisitions are required, and the technical solution in the embodiment of the present invention can obtain the fingerprint at one time through the camera. The complete information improves the efficiency of fingerprint recognition.

In some possible embodiments of the present invention, as shown in FIG. 6, the terminal 300 may further include an encryption module 308 and a decryption module 309 with respect to the terminal 300 shown in FIG.

The encryption module 308 is configured to encrypt the preset fingerprint image. Correspondingly, the storage module 307 is specifically configured to save the preset fingerprint image encrypted by the encryption module 308.

The decryption module 309 is configured to decrypt the encrypted preset fingerprint image stored in the storage module 307. Correspondingly, the determining module 304 is specifically configured to compare the comparison fingerprint image with the preset fingerprint image decrypted by the decryption module 309, and determine whether the comparison fingerprint image matches the preset fingerprint image.

It can be seen that the technical solution of the embodiment of the present invention uses the camera in the terminal to acquire an original image including a fingerprint image, and obtains a preset fingerprint image after processing. Since the camera in the terminal such as a mobile phone or a computer is a standard configuration, no additional setting is required. The technical solution provided by the invention improves the utilization rate of the camera in the terminal, and saves the special pattern recognition module in the terminal, thereby saving the cost. When the preset fingerprint image is obtained by setting the fingerprint identification module, the fingerprint recognition module is small, and the multiple fingerprints are required to obtain the complete fingerprint information. The technical solution in the embodiment of the present invention can obtain the complete fingerprint at a time through the camera. Information improves fingerprint recognition efficiency. In addition, the embodiment of the present invention improves the security of the terminal when using the fingerprint identification by setting the encryption module.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a terminal according to another embodiment of the present invention. As shown in FIG. 7, the terminal 400 in this embodiment includes at least one input device 401, at least one output device 402, at least one processor 403, such as a CPU, and a memory 404. The input device 401, the output device 402, the processor 403, and the memory 404 are connected by a bus 405.

The input device 401 includes a camera, and may further include a touch panel, a touch screen, or a touch button, etc.; the fingerprint collection instruction is triggered by the input device.

The above memory 404 may be a high speed RAM memory or a non-volatile memory such as a disk memory. The memory 404 is used to store a set of program codes, and the input device 401, the output device 402, and the processor 403 are used to call the program code stored in the memory 404, and perform the following operations:

After the input device 401 triggers the fingerprint collection instruction, the processor 403 receives the fingerprint acquisition instruction, and then controls the camera in the input device 401 to be in an active state, and acquires a captured image including the fingerprint image through the camera. In some feasible implementation manners, the camera acquires The captured image can be displayed by output device 402.

The processor 403 is further configured to: extract a fingerprint image from the acquired image, and perform pre-processing on the fingerprint image extracted from the acquired image to obtain a comparison fingerprint image. And determining whether the comparison fingerprint image matches the preset fingerprint image; if the comparison fingerprint image matches the preset fingerprint image, performing a preset operation according to the preset condition. For example, an operation of unlocking the terminal is performed.

In a feasible implementation, the processor 403 is further configured to control the camera in the input device 401 to be in an active state, and use the camera to acquire an original image including a fingerprint image; in some feasible implementations, the original image acquired by the camera may be output through Device 402 is displayed.

The processor 403 is further configured to: extract a fingerprint image from the original image, and perform pre-processing on the fingerprint image extracted from the original image to obtain a preset fingerprint image; and save the preset fingerprint image in In memory 404.

In a feasible implementation manner, the processor 403 is further configured to encrypt the preset fingerprint image, and the encrypted preset fingerprint image is saved in the memory 404.

The processor 403 is further configured to: decrypt the encrypted preset fingerprint image stored in the storage module; compare the comparison fingerprint image with the decrypted preset fingerprint image, and determine the comparison fingerprint image and Whether the preset fingerprint images match.

In a possible implementation, the processor

Extracting a fingerprint image from the original image;

Performing direction information extraction or ridge extraction on the first fingerprint image to obtain a second fingerprint image image;

In a specific implementation, the input device 401, the output device 402, and the processor 403 described in the embodiments of the present invention may be described in various embodiments of the fingerprint identification method described in FIG. 1 to FIG. 3b provided by the embodiments of the present invention. The implementation manner of the terminal described in FIG. 4 to FIG. 6 provided by the embodiment of the present invention may also be implemented, and details are not described herein again.

It can be seen that the technical solution of the embodiment of the present invention uses the camera in the terminal to acquire an original image including a fingerprint image, and obtains a preset fingerprint image after processing. Since the camera in the terminal such as a mobile phone or a computer is a standard configuration, no additional setting is required. The technical solution provided by the invention improves the utilization rate of the camera in the terminal, and saves the special pattern recognition module in the terminal, thereby saving the cost. When the preset fingerprint image is obtained by setting the fingerprint identification module, the fingerprint recognition module is small, and the multiple fingerprints are required to obtain the complete fingerprint information. The technical solution in the embodiment of the present invention can obtain the complete fingerprint at a time through the camera. Information improves fingerprint recognition efficiency.

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.

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 addition, 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.

The modules described above as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

Therefore, the above embodiments are only intended to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the spirit of the technical solutions of the embodiments of the present invention. And scope.

Claims

A fingerprint identification method, the method comprising:

After receiving the fingerprint collection instruction, the camera of the calling terminal acquires a captured image including the fingerprint image;

Extracting the fingerprint image from the captured image, and preprocessing the fingerprint image to obtain a comparison fingerprint image;

Determining whether the comparison fingerprint image matches a preset fingerprint image;

If the comparison fingerprint image matches the preset fingerprint image, the preset operation is performed according to the preset condition.
The method according to claim 1, wherein after the receiving the fingerprint acquisition command, the camera of the calling terminal acquires the captured image including the fingerprint image, the method further includes: acquiring the preset fingerprint image, Specifically include:

After receiving the fingerprint collection instruction, the camera of the calling terminal acquires an original image including the fingerprint image;

Extracting the fingerprint image from the original image, and preprocessing the fingerprint image extracted from the original image to obtain a preset fingerprint image;

The preset fingerprint image is saved in the storage module.
The method according to claim 2, wherein the saving the preset fingerprint image in the storage module comprises:

Encrypting the preset fingerprint image,

The encrypted preset fingerprint image is saved in the storage module.
The method according to claim 3, wherein the determining whether the comparison fingerprint image matches a preset fingerprint image comprises:

Decrypting the encrypted preset fingerprint image saved in the storage module;

Comparing the comparison fingerprint image with the decrypted preset fingerprint image to determine whether the comparison fingerprint image matches the preset fingerprint image.
The method according to claim 2, wherein said extracting said fingerprint image from said original image, and preprocessing said fingerprint image extracted from said original image to obtain a preset Fingerprint image; includes:

Extracting a fingerprint image from the original image;

Separating the background of the fingerprint image to obtain a first fingerprint image;

Performing direction information extraction or ridge extraction on the first fingerprint image to obtain a second fingerprint image;

Performing a binarization process on the second fingerprint image to obtain a third fingerprint image;

Performing image refinement and repair on the third fingerprint image to obtain a fourth fingerprint image;

The fourth fingerprint image extracts feature points to obtain a fifth fingerprint image, and the fifth fingerprint image is the preset fingerprint image.
A terminal, comprising:

a camera, configured to acquire a captured image including a fingerprint image after receiving the fingerprint acquisition instruction;

a first processing module, configured to extract the fingerprint image from the captured image, and perform pre-processing on the fingerprint image to obtain a comparison fingerprint image;

a determining module, configured to determine whether the comparison fingerprint image matches a preset fingerprint image;

And an execution module, configured to perform a preset operation according to the preset condition if the determination result of the determining module is that the matching fingerprint image matches the preset fingerprint image.
The terminal of claim 6 wherein:

The camera is further configured to acquire an original image including the fingerprint image;

The terminal further includes:

a second processing module, configured to extract the fingerprint image from the original image, and perform pre-processing on the fingerprint image extracted from the original image to obtain a preset fingerprint image;

a storage module, configured to save the preset fingerprint image.
The terminal according to claim 7, wherein the terminal further comprises:

An encryption module, configured to encrypt the preset fingerprint image;

The storage module is specifically configured to save the preset fingerprint image encrypted by the encryption module.
The terminal according to claim 8, wherein the terminal further comprises:

a decryption module, configured to decrypt the encrypted preset fingerprint image stored in the storage module;

The determining module is specifically configured to compare the comparison fingerprint image with the preset fingerprint image decrypted by the decryption module, and determine whether the comparison fingerprint image matches the preset fingerprint image.
The terminal according to claim 7, wherein

The second processing module is specifically configured to: extract a fingerprint image from the original image; separate the background of the fingerprint image to obtain a first fingerprint image; perform direction information extraction or ridge extraction on the first fingerprint image to obtain a second a fingerprint image; performing a binarization process on the second fingerprint image to obtain a third fingerprint image; performing image refinement and repair on the third fingerprint image to obtain a fourth fingerprint image; and extracting the fourth fingerprint image The feature point obtains a fifth fingerprint image, and the fifth fingerprint image is the preset fingerprint image.