WO2018129966A1

WO2018129966A1 - Fingerprint processing method, device and mobile terminal

Info

Publication number: WO2018129966A1
Application number: PCT/CN2017/106124
Authority: WO
Inventors: 秦萍; 寇晖; 刘明曜; 宋江涛
Original assignee: 珠海格力电器股份有限公司
Priority date: 2017-01-16
Filing date: 2017-10-13
Publication date: 2018-07-19
Also published as: CN106650706A; CN106650706B

Abstract

A fingerprint processing method, a device and a mobile terminal. The method comprises: when a touch operation by a user is detected, acquiring a user fingerprint image (S101); extracting fingerprint features in the fingerprint image (S102); matching the fingerprint features with fingerprint templates in a fingerprint database (S103); if a matching fingerprint template matched with the fingerprint features is found in the fingerprint database, performing a fingerprint unlocking operation, and denoting the matching fingerprint template as a first fingerprint template (S104); and acquiring difference features between the fingerprint features and the first fingerprint template (S105); adding the difference features into the first fingerprint template to correct the first fingerprint template to obtain a second fingerprint template (S106); and replacing the first fingerprint template in the fingerprint database with a second fingerprint template (S107). By using the method, the device and the mobile terminal, the correction of the fingerprint template can be achieved, thereby improving the matching degree between the input fingerprint of a user and the fingerprint templates, and improving the sensitivity of fingerprint unlocking.

Description

Fingerprint processing method, device and mobile terminal

The present application is based on the application number of the Japanese Patent Application No. 201710032350.X, filed on January 16, 2017, and the priority of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of information processing, and in particular, to a fingerprint processing method, apparatus, and mobile terminal.

Background technique

At present, many mobile terminals have fingerprint recognition functions. With the development of technology, the fingerprint recognition function has also been developed from a single unlock to a function of unlocking, paying, and launching various applications, which is also convenient for users to use. The role of protecting user information security.

Generally, the fingerprint template stored in the fingerprint database of the mobile terminal is collected when the user starts the fingerprint unlocking or initializes the fingerprint. The fingerprint entered by the user fingerprint is matched with the fingerprint template to identify the fingerprint, and after the matching is successful, Unlock it. However, the inventor has found through research that there is a difference between the fingerprint and the fingerprint template entered by the user each time the fingerprint is unlocked, and the difference affects the matching degree between the fingerprint and the fingerprint template, and the fingerprint template and the fingerprint of the user are entered when unlocked. The degree of matching between fingerprints will affect the sensitivity of fingerprint unlocking.

Summary of the invention

One technical problem solved by the embodiments of the present disclosure is that there is a deviation between the fingerprint entered by the user and the fingerprint template stored in advance, thereby affecting the sensitivity of the fingerprint unlocking.

According to an aspect of one or more embodiments of the present disclosure, a fingerprint collection method is provided, including:

Collecting a fingerprint image of the user when the fingerprint contact of the user is detected;

Extracting fingerprint features in the fingerprint image;

Matching the fingerprint feature with a fingerprint template in the fingerprint library;

When the fingerprint template matching the fingerprint feature is not lower than the preset threshold, the fingerprint unlocking operation is performed, and the matching degree with the fingerprint feature is not lower than the preset. The fingerprint template of the threshold is recorded as the first fingerprint template;

Obtaining a difference feature between the fingerprint feature and the first fingerprint template;

Adding the difference feature to the first fingerprint template, and modifying the first fingerprint template to obtain a second fingerprint template;

The first fingerprint template in the fingerprint library is replaced with the second fingerprint template.

Optionally, after the replacing the first fingerprint template in the fingerprint database with the second fingerprint template, when the fingerprint contact of the user is detected again, the method further includes:

In the fingerprint database, the initial fingerprint template corresponding to the second fingerprint template is replaced with the number of replacements required by the second fingerprint template, wherein the initial fingerprint template is for the user to start fingerprint unlocking or initialize the fingerprint. The fingerprint template registered at the time;

Determining whether the number of replacements reaches a preset number of replacements;

If the number of replacements reaches the preset number of replacements, the first prompt information is output, where the first prompt information is used to prompt the user to enter at least one other fingerprint fingerprint that is pre-registered to verify the user identity;

When the user authentication passes, the fingerprint unlocking operation is performed.

The initial fingerprint template corresponding to the second fingerprint template is replaced with the extended fingerprint area added by the second fingerprint template, where the initial fingerprint template is a fingerprint template registered when the user starts the fingerprint unlocking or initializes the fingerprint;

Determining whether the extended fingerprint area reaches a preset extended fingerprint area;

If the extended fingerprint area reaches the preset extended fingerprint area, outputting second prompt information, where the second prompt information is used to prompt the user to input at least one other pre-registered finger fingerprint to verify the user identity;

Optionally, when the extended fingerprint area reaches the preset extended fingerprint area, the fingerprint collection method further includes:

The second fingerprint template is determined as a final fingerprint template.

Calculating an overall fingerprint area of the second fingerprint template;

Determining whether the total fingerprint area reaches a preset fingerprint area;

If the total fingerprint area reaches the preset fingerprint area, outputting a third prompt information, where the third The information is used to prompt the user to enter at least one pre-registered other finger fingerprint to verify the user identity;

Optionally, when the total fingerprint area reaches the preset fingerprint area, the fingerprint collection method further includes:

The second fingerprint template is determined as a final fingerprint template.

According to still another aspect of the one or more embodiments of the present disclosure, a fingerprint collection apparatus includes:

The collecting unit is configured to collect a fingerprint image of the user when detecting a fingerprint contact of the user;

An extracting unit, configured to extract a fingerprint feature in the fingerprint image;

a matching unit, configured to match the fingerprint feature with a fingerprint template in the fingerprint library;

And an unlocking unit, configured to perform a fingerprint unlocking operation when matching the fingerprint template with the fingerprint feature in a minimum of a preset threshold in the fingerprint database, and the matching degree with the fingerprint feature is not low The fingerprint template of the preset threshold is recorded as a first fingerprint template;

An acquiring unit, configured to acquire a difference feature between the fingerprint feature and the first fingerprint template;

An adding unit, configured to add the difference feature to the first fingerprint template, and modify the first fingerprint template to obtain a second fingerprint template;

And a replacement unit, configured to replace the first fingerprint template in the fingerprint library with the second fingerprint template.

Optionally, the foregoing apparatus further includes:

a statistical unit, configured to: after the first fingerprint template in the fingerprint library is replaced with the second fingerprint template, when the fingerprint contact of the user is detected again, the fingerprint library is counted The initial fingerprint template corresponding to the second fingerprint template is replaced with the number of replacements required by the second fingerprint template, where the initial fingerprint template is a fingerprint template registered when the user starts the fingerprint unlocking or initializes the fingerprint;

a first determining unit, configured to determine whether the number of replacement times reaches a preset replacement number;

a first output unit, configured to: when the first determining unit determines that the message is yes, the first prompt information is used to prompt the user to enter at least one other pre-registered finger fingerprint to Identity verification;

The first execution unit is configured to perform a fingerprint unlocking operation when the user identity verification is passed.

Optionally, the foregoing apparatus further includes:

a first calculating unit, configured to: when the first fingerprint template in the fingerprint library is replaced with the second fingerprint template, when the fingerprint contact of the user is detected again, calculate the second fingerprint Template corresponding to the beginning The initial fingerprint template is replaced by an extended fingerprint area added by the second fingerprint template, where the initial fingerprint template is a fingerprint template registered when the user starts the fingerprint unlocking or initializes the fingerprint;

a second determining unit, configured to determine whether the extended fingerprint area reaches a preset extended fingerprint area;

a second output unit, configured to output a second prompt information, where the second prompt information is used to prompt the user to enter at least one pre-registered other finger fingerprint to the user Identity verification;

The second execution unit is configured to perform a fingerprint unlocking operation when the user identity verification is passed.

Optionally, the foregoing apparatus further includes:

The first determining unit is configured to determine the second fingerprint template as a final fingerprint template when the extended fingerprint area reaches the preset extended fingerprint area.

Optionally, the foregoing apparatus further includes:

a second calculating unit, configured to calculate the second fingerprint template when the fingerprint contact of the user is detected again after the replacing the first fingerprint template in the fingerprint library with the second fingerprint template Overall fingerprint area;

a third determining unit, configured to determine whether the total fingerprint area reaches a preset fingerprint area;

a third output unit, configured to output a third prompt information, where the third prompt information is used to prompt the user to enter at least one pre-registered other finger fingerprint to the user Identity verification;

The third execution unit is configured to perform a fingerprint unlocking operation when the user identity verification is passed.

Optionally, the foregoing apparatus further includes:

The second determining unit is configured to determine the second fingerprint template as a final fingerprint template when the total fingerprint area reaches the preset fingerprint area.

According to still another aspect of the one or more embodiments of the present disclosure, a fingerprint processing apparatus is provided, including:

a memory for storing instructions;

A processor coupled to the memory, the processor being configured to perform the method involved in any of the above embodiments based on the instructions stored in the memory.

According to still another aspect of the one or more embodiments of the present disclosure, a mobile terminal is provided, including the fingerprint processing apparatus according to any of the above embodiments.

In accordance with still another aspect of one or more embodiments of the present disclosure, a computer readable storage medium is provided, wherein a computer readable storage medium stores computer instructions that, when executed by a processor, implement any of the implementations described above The method involved in the example.

Other features of the present disclosure and its advantages will be apparent from the following detailed description of exemplary embodiments.

DRAWINGS

The drawings described herein are provided to provide a further understanding of the present disclosure, which is a part of the present disclosure, and the description of the present disclosure and the description thereof are not intended to limit the disclosure. In the drawing:

FIG. 1 is an exemplary flowchart showing a fingerprint processing method in accordance with some embodiments of the present disclosure;

2 is an exemplary flowchart showing verification of a user identity in a fingerprint processing method, in accordance with some embodiments of the present disclosure;

FIG. 3 is an exemplary flowchart showing verification of a user identity in a fingerprint processing method according to further embodiments of the present disclosure; FIG.

4 is an exemplary flowchart showing verification of a user identity in a fingerprint processing method in accordance with further embodiments of the present disclosure;

FIG. 5 is an exemplary block diagram showing a fingerprint processing apparatus in accordance with some embodiments of the present disclosure;

6 is an exemplary block diagram showing an apparatus for authenticating a user identity in a fingerprint processing device, in accordance with some embodiments of the present disclosure;

7 is an exemplary block diagram showing an apparatus for authenticating a user identity in a fingerprint processing apparatus in accordance with further embodiments of the present disclosure;

FIG. 8 is an exemplary block diagram showing an apparatus for authenticating a user identity in a fingerprint processing apparatus according to further embodiments of the present disclosure.

FIG. 9 is an exemplary block diagram showing a fingerprint processing apparatus according to further embodiments of the present disclosure;

FIG. 10 is an exemplary block diagram showing a mobile terminal in accordance with some embodiments of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, 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 disclosure without departing from the inventive scope are the scope of the disclosure.

Some embodiments of the present disclosure disclose a fingerprint processing method, apparatus, and mobile terminal, so as to collect fingerprint samples while the user uses the fingerprint operation, and add fingerprints and fingerprint template differences to the fingerprint template to implement the fingerprint. The modification of the template enables the fingerprint template to be continuously improved, and the matching degree between the fingerprint entered when the user's fingerprint is unlocked and the fingerprint template is improved, thereby improving the sensitivity of the fingerprint unlocking.

FIG. 1 is an exemplary flowchart showing a fingerprint processing method in accordance with some embodiments of the present disclosure. The method can be applied to a mobile terminal, and the mobile terminal includes but is not limited to a smart phone, an IPAD, and the like. The method can include the following steps:

Step S101: Collect a fingerprint image of the user when detecting that the user performs a touch operation.

The fingerprint is the line of the protrusion on the epidermis. The starting point, the end point, the joint point and the bifurcation point of the line are called the detailed feature points of the fingerprint. Since the fingerprint of the person is the combination of genetics and environment, it is closely related to human health. Therefore, fingerprints are available to everyone, but they are different. Because the fingerprint repetition rate is extremely small, it is called "human identity card."

For example, when the mobile terminal is in a non-working state, the mobile terminal is in a screen lock state. When the mobile terminal processes the locked state or the unlocked state, the mobile terminal can detect the contact in real time through the fingerprint sensor, and determine whether the contact is a touch operation, that is, a human finger. Fingerprint contact, in the case of determining that the user is performing a touch operation, collecting a fingerprint image of the user.

Step S102: Extract fingerprint features in the fingerprint image.

For example, the fingerprint image may be subjected to cropping, image enhancement, refinement, denoising, binarization, etc. by fingerprint algorithm, and fingerprint features capable of uniquely representing the user's biometrics are extracted from the fingerprint image.

Step S103: Match the fingerprint feature with the fingerprint template in the fingerprint library.

Optionally, comparing the fingerprint feature of the user with the fingerprint template in the fingerprint library, and determining that the user fingerprint authentication passes when the matching degree of the two is not lower than a preset threshold; If the matching degree is lower than the preset threshold, it is determined that the user fingerprint authentication fails, that is, this step is to verify the current identity of the current user by fingerprint verification. It can be understood that before the mobile terminal or the application in the mobile terminal is unlocked, the fingerprint template needs to be set in advance, and the fingerprint template is associated with the open mobile terminal instruction or the application instruction.

Step S104: If there is a matching fingerprint template matching the fingerprint feature in the fingerprint database, perform a fingerprint unlocking operation, and record the matching fingerprint template as the first fingerprint template. The matching degree between the matching fingerprint template and the fingerprint feature is not lower than a preset threshold.

In the case that it is determined that the user's fingerprint authentication is passed, the corresponding fingerprint unlocking operation is performed, and the matched fingerprint template is recorded as the first fingerprint template; in the case of determining that the user's fingerprint authentication fails, the refusal is performed. Line fingerprint unlocking operation to ensure the security of the mobile terminal and the privacy of the information.

Step S105: Obtain a difference feature between the fingerprint feature and the first fingerprint template.

Optionally, the first fingerprint template is a fingerprint template preset before the application in the mobile terminal or the mobile terminal is unlocked, that is, the fingerprint template pre-recorded by the user. It can be understood that the fingerprint template stored by the user in the fingerprint database is a partial fingerprint corresponding to the finger. Therefore, there is usually a difference between the fingerprint feature entered by the user each time the user unlocks and the pre-stored fingerprint template, and the difference can be passed. The fingerprint feature is compared with the first fingerprint template.

Step S106: Add a difference feature to the first fingerprint template, and modify the first fingerprint template to obtain a second fingerprint template.

It can be understood that the difference between the fingerprint feature entered by the user each time unlocked and the first fingerprint template affects the degree of matching between the fingerprint feature and the first fingerprint template, and the matching degree affects the sensitivity of the fingerprint unlocking. Therefore, in order to improve the sensitivity of fingerprint unlocking, the present disclosure corrects and perfects the first fingerprint template by adding corresponding differential features to the first fingerprint template. To distinguish the first fingerprint template that adds the difference feature from the first fingerprint template that does not add the difference feature, the first fingerprint template that adds the difference feature is named as the second fingerprint template.

Step S107: Replace the first fingerprint template in the fingerprint library with the second fingerprint template.

In summary, the fingerprint processing method provided by the present disclosure collects a fingerprint image of a user and detects a fingerprint feature in the fingerprint image when the user performs a touch operation, and if the fingerprint feature is found in the fingerprint database, The matching fingerprint template acquires the difference feature between the fingerprint feature and the matching fingerprint template while performing the fingerprint unlocking operation, corrects the matching fingerprint template according to the difference feature, and replaces the corrected matching fingerprint template with the matching fingerprint template before the correction. . It can be seen that the present disclosure collects fingerprint samples while the user performs the touch operation, and adds the difference features of the fingerprint sample and the matching fingerprint template to the matching fingerprint template to implement the correction of the matching fingerprint template, thereby continuously improving the fingerprint template. Improve the matching degree between the fingerprint entered when the user's fingerprint is unlocked and the fingerprint template, thereby improving the sensitivity of fingerprint unlocking.

It can be seen from the embodiment shown in FIG. 1 that the present disclosure implements the correction of the fingerprint template by adding the difference feature of the fingerprint sampling and the fingerprint template to the fingerprint template, so that the fingerprint template is continuously improved. Although the fingerprints between people and people are different, the repetition rate of the fingerprint is extremely small, but in order to avoid minor changes to the fingerprint template, the fingerprint template is greatly changed, so that other users can also realize the fingerprint unlocking. The public also sets a threshold for the modification of the fingerprint template, and checks the identity of the user when the fingerprint template changes to the threshold. Certificate to ensure the current identity of the current user.

Therefore, after the fingerprint template is corrected, that is, after the step S107 in the above embodiment is executed, if the fingerprint contact of the user is detected again, the identity of the user is verified. as shown in picture 2:

Step S201: The statistic replaces the initial fingerprint template corresponding to the second fingerprint template with the number of replacements experienced by the second fingerprint template.

The initial fingerprint template is a fingerprint template that is registered when the user starts the fingerprint unlocking or initializes the fingerprint.

Optionally, the number of times the initial fingerprint template is replaced by the second fingerprint template may be replaced by the number of times the initial fingerprint template is replaced by the second fingerprint template. The number of times the initial fingerprint template is replaced with the difference feature added by the second fingerprint template is “4”, and the number of replacements that the initial fingerprint template corresponding to the second fingerprint template is replaced with the second fingerprint template is determined to be “4”.

Optionally, each time the fingerprint template is replaced, the number of replacements from the initial fingerprint template to the current new fingerprint template is recorded on the newly replaced fingerprint template. For example, if the initial fingerprint template is replaced with the first fingerprint template, Marking "1" on the first fingerprint template; in the case of replacing the first fingerprint template with the second fingerprint template, it is equivalent to performing two replacements on the initial fingerprint template to obtain a second fingerprint template. In this case, You can mark "2" on the second fingerprint template.

It should be noted that the number of replacements required to obtain the initial fingerprint template corresponding to the second fingerprint template to be replaced by the second fingerprint template includes, but is not limited to, the above two modes.

Step S202: Determine whether the number of replacement times reaches a preset replacement number, and if yes, proceed to step S203.

The specific value of the preset replacement times is determined according to actual needs, such as 5 times, and the disclosure is not limited herein.

Step S203: Output first prompt information, where the first prompt information is used to prompt the user to input at least one other fingerprint fingerprint registered in advance to verify the user identity.

Optionally, in order to avoid the appearance of a finger entering the fingerprint by the user, such as a finger peeling, the fingerprint cannot be collected, and usually multiple fingerprints are input at a time, so that in the case of a finger entering the fingerprint, the fingerprint may also be used. Other fingerprints are fingerprinted to unlock the fingerprint.

In this step, in the case that the number of replacements of the fingerprint template reaches the preset number of replacements, in order to ensure that the current user is a legitimate user, when the user's fingerprint contact is detected, the user is prompted to input other pre-registered other finger fingerprints. To verify the current user identity.

Step S204: Perform a fingerprint unlocking operation when the user identity verification is passed.

Optionally, in the case that the fingerprint template matching the other fingerprints entered by the user is matched in the fingerprint database, it is determined that the user identity verification passes, thereby performing the fingerprint unlocking operation.

It should be noted that the fingerprint input for determining the identity of the user may be a finger fingerprint or a plurality of finger fingerprints, which may be determined according to actual needs, and the disclosure is not limited herein.

Optionally, if it is determined in step S202 whether the number of replacements reaches the preset number of replacements, the fingerprint image currently recorded by the user is collected again according to the embodiment disclosed in FIG. 1 , and according to the fingerprint feature of the fingerprint image and the second The difference feature of the fingerprint template modifies the second fingerprint template.

In this embodiment, after determining that the user identity verification is passed, the second fingerprint template may be used as the final fingerprint template, and no correction is performed; the second fingerprint template may also be used as a new initial fingerprint template, as shown in FIG. The steps disclosed in the embodiment correct the new initial fingerprint template again.

FIG. 3 is an exemplary flowchart showing verification of a user identity in a fingerprint processing method according to another embodiment of the present disclosure, the method comprising the following steps:

Step S301: Calculate an initial fingerprint template corresponding to the second fingerprint template and replace the extended fingerprint area increased by the second fingerprint template.

For example, the initial fingerprint template corresponding to the second fingerprint template may be compared with the second fingerprint template, and the difference area between the two is the extended fingerprint area.

Step S302: Determine whether the area of the extended fingerprint reaches the preset extended fingerprint area, and if yes, execute step S303.

Optionally, in order to avoid minor changes to the fingerprint template, the fingerprint template is greatly changed, and thus other users can also implement fingerprint unlocking. In this embodiment, the extended fingerprint area is correspondingly limited, and if the extended fingerprint area is not After the preset extended fingerprint area is reached, the fingerprint template may be further modified according to the embodiment shown in FIG. 1; when the extended fingerprint area reaches the preset extended fingerprint area, the output is used to prompt the user to enter at least one other pre-registered finger. The prompt information of the fingerprint is verified according to the fingerprint of the finger that the user re-enters.

Step S303: Output second prompt information, where the second prompt information is used to prompt the user to enter at least one other fingerprint fingerprint that is pre-registered to verify the user identity.

Step S304, in the case that the user identity verification is passed, the fingerprint unlocking operation is performed.

Optionally, in the case that the fingerprint template matches the fingerprint template matching the other fingerprints entered by the user again, it is determined that the user identity verification passes, thereby performing the fingerprint unlocking operation.

In this embodiment, after determining that the user identity verification is passed, in order to avoid minor changes to the fingerprint template, the fingerprint template is greatly changed, so that other users can also implement the fingerprint unlocking situation, and the extended fingerprint area is determined to be pre-determined. In the case where the extended fingerprint area is set, the second fingerprint template can be determined as the final fingerprint template.

FIG. 4 is an exemplary flowchart showing verification of a user identity in a fingerprint processing method according to another embodiment of the present disclosure, the method comprising the following steps:

Step S401: Calculate an overall fingerprint area of the second fingerprint template.

Step S402: Determine whether the total fingerprint area reaches the preset fingerprint area, and if yes, perform step S403.

Optionally, in order to avoid minor changes to the fingerprint template, resulting in a large change of the fingerprint template, and other users can also achieve fingerprint unlocking, the embodiment sets a preset fingerprint area, and the second fingerprint template is In the case that the overall fingerprint area does not reach the preset fingerprint area, according to the embodiment shown in FIG. 1, the second fingerprint template is further modified; in the case where the overall fingerprint area of the second fingerprint template reaches the preset fingerprint area, The prompt information for prompting the user to enter at least one pre-registered other finger fingerprint is output, and the user identity is verified according to the finger fingerprint that the user re-enters.

Step S403: Output third prompt information, where the third prompt information is used to prompt the user to enter at least one other fingerprint fingerprint that is pre-registered to verify the user identity.

Step S404, in the case that the user identity verification is passed, the fingerprint unlocking operation is performed.

In this embodiment, after determining that the user identity verification is passed, in order to avoid minor changes to the fingerprint template, the fingerprint template is greatly changed, so that other users can also implement the fingerprint unlocking situation, and the extended fingerprint area is determined to reach the preset. In the case of expanding the fingerprint area, the second fingerprint template can be determined as the final fingerprint template.

It should be noted that the process of verifying the identity of the user in the fingerprint processing method includes, but is not limited to, the embodiments shown in FIG. 2 to FIG. 3, and other similar methods for verifying the identity of the user are also within the protection scope of the present disclosure.

In summary, the fingerprint processing method of the present disclosure collects fingerprint samples while the user uses the fingerprint operation, and adds the difference feature of the fingerprint sample and the fingerprint template to the fingerprint template to implement the correction of the fingerprint template, so that the fingerprint template is continuously Perfect, improve the matching degree between the fingerprint entered by the user's fingerprint and the fingerprint template, thereby improving the sensitivity of fingerprint unlocking. Moreover, in order to avoid minor changes to the fingerprint template, resulting in a large change in the fingerprint template, and thus other users can also achieve fingerprint unlocking, the present disclosure also sets a threshold value for the fingerprint template change, and in the fingerprint When the template changes to the threshold, the identity of the user is verified to ensure the current user's legal identity.

Corresponding to the above method embodiment, the present disclosure also provides a fingerprint processing apparatus.

FIG. 5 is an exemplary block diagram of a fingerprint processing apparatus in accordance with some embodiments of the present disclosure. Optionally, the device is applied to a mobile terminal, where the mobile terminal includes but is not limited to a smart phone, an IPAD, etc., and the device includes:

The collecting unit 501 is configured to collect a fingerprint image of the user when detecting that the user performs a touch operation.

Optionally, in a case where the mobile terminal is in a non-working state, the mobile terminal may be in a screen lock state. When the mobile terminal processes the locked state or the unlocked state, the mobile terminal may detect the contact in real time through the fingerprint sensor, and determine whether the contact is a touch contact. That is, the fingerprint contact of the human finger, in the case where it is determined that the fingerprint contact of the user is detected, the fingerprint image of the user is collected.

The extracting unit 502 is configured to extract fingerprint features in the fingerprint image.

Optionally, the fingerprint image may be subjected to cropping, image enhancement, refinement, de-drying, binarization, etc. by fingerprint algorithm, and the fingerprint feature uniquely representing the user biometric is extracted from the fingerprint image.

The matching unit 503 is configured to match the fingerprint feature with the fingerprint template in the fingerprint library.

In this embodiment, the fingerprint feature of the user is compared with the fingerprint template in the fingerprint database, and if the matching degree of the two is not lower than the preset threshold, the user fingerprint authentication is determined to pass; If the matching degree is lower than the preset threshold, it is determined that the user fingerprint authentication fails, that is, this step is to verify the current identity of the current user by fingerprint verification. It can be understood that before the mobile terminal or the application in the mobile terminal is unlocked, the fingerprint template needs to be set in advance, and the fingerprint template is associated with the open mobile terminal instruction or the application instruction.

The unlocking unit 504 is configured to perform a fingerprint unlocking operation when the matching fingerprint template matches the fingerprint feature in the fingerprint database, and record the matching fingerprint template as the first fingerprint template, wherein the matching fingerprint template and the fingerprint feature The matching degree is not lower than the preset threshold.

For example, if it is determined that the fingerprint authentication of the user passes, the fingerprint unlocking operation is performed, and the matched fingerprint template is recorded as the first fingerprint template; if it is determined that the fingerprint authentication of the user fails, the fingerprint unlocking operation is refused to ensure the movement. Terminal security and information privacy.

The obtaining unit 505 is configured to acquire a difference feature between the fingerprint feature and the first fingerprint template.

Optionally, the first fingerprint template is a fingerprint template preset before the application in the mobile terminal or the mobile terminal is unlocked, that is, the fingerprint template pre-recorded by the user. It can be understood that the user stores the fingerprint template in the fingerprint database. The fingerprint template is a partial fingerprint of the corresponding finger. Therefore, there is usually a difference between the fingerprint feature entered by the user each time unlocked and the pre-stored fingerprint template, and the difference can be obtained by comparing the fingerprint feature with the first fingerprint template. .

The adding unit 506 is configured to add the difference feature to the first fingerprint template, and modify the first fingerprint template to obtain the second fingerprint template.

It can be understood that the difference between the fingerprint feature entered by the user each time the user is unlocked and the first fingerprint template may affect the matching degree between the fingerprint feature and the first fingerprint template, and the matching degree may affect the sensitivity of the fingerprint unlocking. In order to improve the sensitivity of fingerprint unlocking, the present disclosure corrects and perfects the first fingerprint template by using a technical means of adding a difference feature to the first fingerprint template. To distinguish the first fingerprint template that adds the difference feature from the first fingerprint template that does not add the difference feature, in this embodiment, the first fingerprint template that adds the difference feature is named as the second fingerprint template.

The replacing unit 507 is configured to replace the first fingerprint template in the fingerprint library with the second fingerprint template.

In summary, the fingerprint processing device provided by the present disclosure collects a fingerprint image of a user and detects a fingerprint feature in the fingerprint image when the fingerprint contact of the user is detected, and finds a fingerprint feature in the fingerprint database. In the case of the fingerprint template, while performing the fingerprint unlocking operation, the difference features of the fingerprint feature and the matched fingerprint template are acquired, the fingerprint template is corrected according to the difference feature, and the corrected fingerprint template is replaced with the fingerprint template before the correction. It can be seen that the present disclosure collects fingerprint sampling while the user uses the fingerprint operation, and adds the difference feature of the fingerprint sampling and the fingerprint template to the fingerprint template to implement the correction of the fingerprint template, thereby continuously improving the fingerprint template and improving the user fingerprint. The degree of matching between the fingerprint entered and the fingerprint template when unlocking, thereby improving the sensitivity of fingerprint unlocking.

As can be seen from the embodiment shown in FIG. 5, the present disclosure implements the correction of the fingerprint template by adding the difference feature of the fingerprint sampling and the fingerprint template to the fingerprint template, so that the fingerprint template is continuously improved. Although the fingerprints between people are different, the repetition rate of the fingerprint is extremely small, but in order to avoid minor changes to the fingerprint template, the fingerprint is caused. The large change of the template, so that other users can also achieve the fingerprint unlocking situation, the disclosure also sets a threshold value for the fingerprint template change, and in the case that the fingerprint template change reaches the threshold value, the user The identity is verified to ensure the current identity of the current user.

Therefore, after the fingerprint template is corrected, that is, after the replacement unit 507 replaces the first fingerprint template in the fingerprint library with the second fingerprint template, if the user's touch operation is detected again, the identity of the user is verified.

6 is an exemplary block diagram showing an apparatus for authenticating a user identity in a fingerprint processing device, the device comprising:

The statistic unit 601 is configured to: after the first fingerprint template in the fingerprint database is replaced with the second fingerprint template, if the touch operation of the user is detected again, the statistics replace the initial fingerprint template corresponding to the second fingerprint template with the first fingerprint template. The number of replacements that the fingerprint template experiences, wherein the initial fingerprint template is a fingerprint template that is registered when the user starts the fingerprint unlocking or initializes the fingerprint.

Optionally, the number of times the initial fingerprint template corresponding to the second fingerprint template is replaced with the number of replacements performed by the second fingerprint template may be determined by counting the number of times the initial fingerprint template is replaced with the difference feature added by the second fingerprint template. The number of times the initial fingerprint template is replaced with the difference feature added by the second fingerprint template is “4”, and the number of replacements required to replace the initial fingerprint template corresponding to the second fingerprint template with the second fingerprint template is “4”.

The fingerprint template may be replaced once, and the number of replacements of the current fingerprint template replaced by the current fingerprint template may be recorded on the newly replaced fingerprint template. For example, if the initial fingerprint template is replaced with the first fingerprint template, the first fingerprint template may be replaced by the first fingerprint template. Marking "1" on the fingerprint template; in the case of replacing the first fingerprint template with the second fingerprint template, it is equivalent to replacing the initial fingerprint template twice to obtain a second fingerprint template. In this case, Mark "2" on the second fingerprint template.

The first determining unit 602 is configured to determine whether the number of replacements reaches a preset number of replacements.

The first output unit 603 is configured to output first prompt information when the first determining unit 602 determines that the yes, the first prompt information is used to prompt the user to enter at least one pre-registered other finger fingerprint to identify the user. authenticating.

Optionally, in general, in order to avoid the appearance of a finger due to a user entering a fingerprint, such as a finger peeling, As the fingerprint cannot be collected, multiple finger fingerprints are usually entered at one time, so that in the case of a finger entering the fingerprint, the finger with other fingerprints can be used to unlock the fingerprint.

In this embodiment, in the case that the number of replacements of the fingerprint template reaches the preset number of replacements, in order to ensure that the current user is a legitimate user, when the fingerprint contact of the user is detected, the user is prompted to input other pre-registered others. Finger fingerprint to verify the current user identity.

The first execution unit 604 is configured to perform a fingerprint unlocking operation if the user identity verification is passed.

In the case that the first determining unit 602 determines whether the number of replacements reaches the preset number of replacements, the fingerprint image currently recorded by the user is collected again according to the embodiment disclosed in FIG. 5, and according to the fingerprint feature of the fingerprint image. The difference feature of the second fingerprint template modifies the second fingerprint template.

Optionally, after determining that the user identity verification is passed, the second fingerprint template may be used as the final fingerprint template, and no modification is performed; or the second fingerprint template may be used as a new initial fingerprint template, and implemented according to FIG. The steps disclosed in the example correct the new initial fingerprint template again.

FIG. 7 is an exemplary block diagram showing an apparatus for authenticating a user identity in a fingerprint processing apparatus according to further embodiments of the present disclosure, the apparatus comprising:

The first calculating unit 701 is configured to: after the first fingerprint template is replaced with the second fingerprint template, if the touch operation of the user is detected again, the initial fingerprint template corresponding to the second fingerprint template is replaced with the second fingerprint. The extended fingerprint area added by the template, wherein the initial fingerprint template is a fingerprint template registered when the user starts the fingerprint unlocking or initializes the fingerprint.

Optionally, the initial fingerprint template corresponding to the second fingerprint template may be compared with the second fingerprint template, and the difference area between the two is an extended fingerprint area.

The second determining unit 702 is configured to determine whether the extended fingerprint area reaches a preset extended fingerprint area.

Optionally, in order to avoid a small change to the fingerprint template, the fingerprint template is greatly changed, and thus other users can also implement the fingerprint unlocking. The embodiment adopts a technical method for limiting the extended fingerprint area, if the fingerprint is extended. If the area does not reach the preset extended fingerprint area, according to the embodiment shown in FIG. 1 , the fingerprint template is further modified; if the extended fingerprint area reaches the preset extended fingerprint area, the output is used to prompt the user to enter at least one. The prompt information of other finger fingerprints registered in advance, and the user identity is verified according to the fingerprint of the finger that the user re-enters.

The second output unit 703 is configured to output second prompt information when the second determining unit 702 determines that the yes, the second prompt information is used to prompt the user to enter at least one pre-registered other finger fingerprint to identify the user. authenticating.

The second execution unit 704 is configured to perform a fingerprint unlocking operation if the user identity verification is passed.

Optionally, if the fingerprint template matching the other fingerprints entered by the user is matched in the fingerprint database, the user identity verification is determined to perform the fingerprint unlocking operation.

Therefore, the device provided in this embodiment may further include a first determining unit (not shown in the figure) configured to determine the second fingerprint template as the final fingerprint if the extended fingerprint area reaches the preset extended fingerprint area. template.

FIG. 8 is an exemplary block diagram showing an apparatus for authenticating a user identity in a fingerprint processing apparatus according to further embodiments of the present disclosure, the apparatus comprising:

The second calculating unit 801 is configured to calculate an overall fingerprint area of the second fingerprint template if the fingerprint contact of the user is detected again after replacing the first fingerprint template in the fingerprint database with the second fingerprint template.

The third determining unit 802 is configured to determine whether the overall fingerprint area reaches a preset fingerprint area.

Optionally, in order to avoid minor changes to the fingerprint template, resulting in a large change of the fingerprint template, and other users can also achieve fingerprint unlocking, the embodiment sets a preset fingerprint area, and the second fingerprint template is In the case that the overall fingerprint area does not reach the preset fingerprint area, according to the embodiment shown in FIG. 5, the second fingerprint template is further modified; in the case where the overall fingerprint area of the second fingerprint template reaches the preset fingerprint area, The prompt information for prompting the user to enter at least one pre-registered other finger fingerprint is output, and the user identity is verified according to the finger fingerprint that the user re-enters.

The third output unit 803 is configured to output a third prompt information when the third determining unit 802 determines that the yes, the third prompt information is used to prompt the user to enter at least one other fingerprint fingerprint registered in advance, to User identity is verified.

The third execution unit 804 is configured to perform a fingerprint unlocking operation if the user identity verification is passed.

Therefore, the apparatus provided in this embodiment may further include a second determining unit (not shown in the figure) configured to determine the second fingerprint template as the final fingerprint if the extended fingerprint area reaches the preset extended fingerprint area. template.

Alternatively, the functional unit modules described in the above embodiments may be implemented as a general purpose processor, a programmable logic controller (PLC), a digital signal processor (for example) for performing the functions described in the present disclosure. Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistors Logic device, discrete hardware component, or any suitable combination thereof.

FIG. 9 is an exemplary block diagram showing a fingerprint processing apparatus according to further embodiments of the present disclosure. As shown in FIG. 9, the apparatus includes a memory 901 and a processor 902. among them:

Memory 901 is for storing instructions, processor 902 is coupled to memory 901, and processor 902 is configured to perform the methods involved in any of the embodiments of FIGS. 1-4 based on instructions stored in the memory.

As shown in FIG. 9, the apparatus further includes a communication interface 903 for performing information interaction with other devices. At the same time, the apparatus further includes a bus 904, and the processor 902, the communication interface 903, and the memory 901 complete communication with each other via the bus 904.

The memory 901 may include a high speed RAM memory, and may also include a non-volatile memory (Non-Volatile Memory, NVM for short), such as at least one disk memory. Memory 901 can also be a memory array. The memory 901 may also be partitioned, and the blocks may be combined into a virtual volume according to certain rules.

Moreover, the processor 902 can be a Central Processing Unit (CPU), or can be an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present disclosure.

The present disclosure further provides a mobile terminal. As shown in FIG. 10, the mobile terminal 1001 includes a fingerprint processing device 1002. The fingerprint processing device 1002 can be a fingerprint processing device according to any of the embodiments of FIG. 5-9.

The present disclosure also provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions that, when executed by the processor, implement the method of any of the embodiments of FIGS. Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code. .

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Finally, it should also be noted that in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities. There is any such actual relationship or order between operations. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the disclosure. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims

A fingerprint processing method comprising:

Collecting a fingerprint image of the user when detecting that the user performs a touch operation;

Extracting fingerprint features in the fingerprint image;

Matching the fingerprint feature with a fingerprint template in the fingerprint library;

In the case that there is a matching fingerprint template matching the fingerprint feature in the fingerprint database, performing a fingerprint unlocking operation, and recording the matching fingerprint template as a first fingerprint template, wherein the matching fingerprint template is The matching degree of the fingerprint feature is not lower than a preset threshold;

Obtaining a difference feature between the fingerprint feature and the first fingerprint template;

Adding the difference feature to the first fingerprint template, and modifying the first fingerprint template to obtain a second fingerprint template;

The first fingerprint template in the fingerprint library is replaced with the second fingerprint template.
The fingerprint processing method according to claim 1, wherein, after the first fingerprint template is replaced with the second fingerprint template, if the touch operation of the user is detected again, the method further includes:

The statistic replaces the initial fingerprint template corresponding to the second fingerprint template with the number of replacements experienced by the second fingerprint template, where the initial fingerprint template is a fingerprint template registered when the user starts the fingerprint unlocking or initializes the fingerprint. ;

When the number of replacements reaches the preset number of replacements, the first prompt information is output, so as to prompt the user to input at least one other finger fingerprint registered in advance, thereby verifying the identity of the user;

In the case where the user authentication is passed, the fingerprint unlocking operation is performed.
The fingerprint processing method according to claim 1, wherein, after the first fingerprint template is replaced with the second fingerprint template, if the touch operation of the user is detected again, the method further includes:

The calculation includes replacing the initial fingerprint template corresponding to the second fingerprint template with the extended fingerprint area added by the second fingerprint template, where the initial fingerprint template is a fingerprint template registered when the user starts the fingerprint unlocking or initializes the fingerprint. ;

When the extended fingerprint area reaches the preset extended fingerprint area, the second prompt information is output, so as to prompt the user to input at least one other pre-registered finger fingerprint, thereby verifying the user identity;

In the case where the user authentication is passed, the fingerprint unlocking operation is performed.
The fingerprint processing method according to claim 3, wherein, in a case where the extended fingerprint area reaches the preset extended fingerprint area, the fingerprint processing method further includes:

The second fingerprint template is determined as a final fingerprint template.
The fingerprint processing method according to claim 1, wherein, after the first fingerprint template is replaced with the second fingerprint template, if the touch operation of the user is detected again, the method further includes:

Calculating an overall fingerprint area of the second fingerprint template;

When the total fingerprint area reaches the preset fingerprint area, the third prompt information is output, so as to prompt the user to input at least one other pre-registered finger fingerprint, thereby verifying the user identity;

In the case where the user authentication is passed, the fingerprint unlocking operation is performed.
The fingerprint processing method according to claim 5, wherein, in a case where the total fingerprint area reaches the preset fingerprint area, the fingerprint processing method further includes:

The second fingerprint template is determined as a final fingerprint template.
A fingerprint processing device comprising:

The collecting unit is configured to collect a fingerprint image of the user when detecting that the user performs a touch operation;

An extracting unit configured to extract a fingerprint feature in the fingerprint image;

a matching unit configured to match the fingerprint feature with a fingerprint template in the fingerprint library;

The unlocking unit is configured to perform a fingerprint unlocking operation when the matching fingerprint template matches the fingerprint feature in the fingerprint database, and record the matching fingerprint template as the first fingerprint template, where The matching degree between the matching fingerprint template and the fingerprint feature is not lower than a preset threshold;

An acquiring unit, configured to acquire a difference feature between the fingerprint feature and the first fingerprint template;

Adding a unit, configured to add the difference feature to the first fingerprint template, and correct the first fingerprint template to obtain a second fingerprint template;

And a replacement unit configured to replace the first fingerprint template in the fingerprint library with the second fingerprint template.
The fingerprint processing device of claim 7, further comprising:

The statistic unit is configured to: after the first fingerprint template is replaced with the second fingerprint template, if the touch operation of the user is detected again, the statistic replaces the initial fingerprint template corresponding to the second fingerprint template with The number of replacements experienced by the second fingerprint template, where the initial fingerprint template is a fingerprint template registered when the user initiates fingerprint unlocking or initializes a fingerprint;

The first output unit is configured to output the first prompt information when the number of replacements reaches the preset number of replacements, so as to prompt the user to enter at least one other fingerprint fingerprint registered in advance, thereby verifying the identity of the user;

The first execution unit is configured to perform a fingerprint unlocking operation when the user identity verification is passed.
The fingerprint processing device of claim 7, further comprising:

a first calculating unit, configured to: after replacing the first fingerprint template with the second fingerprint template, if the touch operation of the user is detected again, calculate an initial fingerprint template corresponding to the second fingerprint template And replacing the extended fingerprint area that is added by the second fingerprint template, where the initial fingerprint template is a fingerprint template that is registered when the user starts the fingerprint unlocking or initializes the fingerprint;

The second output unit is configured to output the second prompt information when the extended fingerprint area reaches the preset extended fingerprint area, so as to prompt the user to input at least one pre-registered other finger fingerprint, thereby verifying the user identity;

The second execution unit is configured to perform a fingerprint unlocking operation if the user identity verification is passed.
The fingerprint processing device of claim 9, further comprising:

The first determining unit is configured to determine the second fingerprint template as a final fingerprint template if the extended fingerprint area reaches the preset extended fingerprint area.
The fingerprint processing device of claim 7, further comprising:

a second calculating unit, configured to calculate an overall fingerprint area of the second fingerprint template if the touch operation of the user is detected again after replacing the first fingerprint template with the second fingerprint template;

The third output unit is configured to output a third prompt information when the total fingerprint area reaches a preset fingerprint area, so as to prompt the user to input at least one pre-registered other finger fingerprint, thereby verifying the user identity;

The third execution unit is configured to perform a fingerprint unlocking operation if the user identity verification is passed.
The fingerprint processing device of claim 11, further comprising:

The second determining unit is configured to determine the second fingerprint template as a final fingerprint template if the total fingerprint area reaches the preset fingerprint area.
A fingerprint processing device comprising:

a memory for storing instructions;

A processor coupled to the memory, the processor being configured to perform the method of any of claims 1-6 based on the stored instructions of the memory.
A mobile terminal, comprising: the fingerprint processing device according to any one of claims 7-13.
A computer readable storage medium, wherein the computer readable storage medium stores computer instructions that, when executed by a processor, implement the method of any of claims 1-6.