CN105912901A - Fingerprint authentication method and terminal - Google Patents
Fingerprint authentication method and terminal Download PDFInfo
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- CN105912901A CN105912901A CN201610209717.6A CN201610209717A CN105912901A CN 105912901 A CN105912901 A CN 105912901A CN 201610209717 A CN201610209717 A CN 201610209717A CN 105912901 A CN105912901 A CN 105912901A
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- Prior art keywords
- characteristic
- terminal
- fingerprint
- fingerprint image
- applied environment
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
Abstract
The embodiment of the invention discloses a fingerprint authentication method and a terminal. The fingerprint authentication method includes: acquiring an application environment parameter of the terminal if a fingerprint image input by a user is received; determining the safety class of a current authentication according to the application environment parameter; determining the matching amount of the safety class of the current authentication according to a corresponding relationship between a preset safety class and the fingerprint characteristic data matching amount; extracting characteristic data of the fingerprint image input by the user; and comparing the extracted characteristic data and pre-stored sample characteristic data according to the determined matching amount so as to perform authentication. The embodiment of the invention also discloses the terminal. The fingerprint authentication method can intelligently adjust the fingerprint characteristic data matching amount according to the application environment parameter of the terminal, and then decrease the power consumption of a terminal system, and reduce the resource waste.
Description
Technical field
The present invention relates to finger print identifying technical field, particularly relate to a kind of fingerprint verification method and terminal.
Background technology
Finger print identifying refers to there is scraggly lines on the positive surface skin of finger tips, and it contains substantial amounts of information.
The lines of these skins is different on pattern, breakpoint and intersection point, they is claimed in information processing
Make " feature ", and these features have uniqueness and permanent, can be a people with his fingerprint pair
Should get up, by comparing fingerprint characteristic and the fingerprint characteristic pre-saved, it is possible to verify its true identity.
Finger print identifying is mainly used in terminal screen unblock and safe consumption field at present.As for the safety of terminal,
Typically require and finger print identifying password is set, and by reading the fingerprint characteristic data of user, and by this feature number
Compare according to the sample characteristics data prestored, to carry out authentication, thus ensure that user in terminal
The safety of data.But in above-mentioned finger print identifying, the security logic of terminal system is strong, the most no matter exist
It is required under any applied environment comparing whole characteristics with sample characteristics data, thus causes
Huge data operation quantity, causes and consumes substantial amounts of processor, battery and memory source, thus make
Become the wasting of resources.
Therefore, urgent need is a kind of at present can reduce terminal system power consumption, the finger print identifying side of the minimizing wasting of resources
Method and terminal.
Summary of the invention
The embodiment of the present invention provides a kind of fingerprint verification method and terminal, its can reduce terminal system power consumption,
Reduce the wasting of resources.
First aspect, embodiments provides a kind of fingerprint verification method, and the method comprises the following steps:
If receiving the fingerprint image of user's input, obtain the applied environment parameter of terminal；According to described applied environment
The safe class of parameter determination current authentication；According to default safe class and the fingerprint characteristic data amount of coupling
Corresponding relation, determines the coupling amount of the safe class of current authentication；Extract the fingerprint image of described user input
Characteristic；The characteristic of extraction is entered by coupling amount determined by according to the sample characteristics data prestored
Row comparison is to be authenticated.
On the other hand, embodiments providing a kind of terminal, this terminal includes: receives unit, is used for
The fingerprint image receiving user's input and the sample characteristics data prestored；Acquiring unit, for obtaining terminal
Applied environment parameter；First determines unit, for the peace according to described applied environment parameter determination current authentication
Congruence level；Second determines unit, and the safe class preset for basis is right with the fingerprint characteristic data amount of coupling
Should be related to, determine the coupling amount of the safe class of current authentication；Extraction unit, is used for extracting described user defeated
The characteristic of the fingerprint image entered；Comparing unit, the feature will extracted for coupling amount determined by basis
Data compare to be authenticated with the sample characteristics data prestored.
The embodiment of the present invention is by obtaining the applied environment parameter of terminal, and comes really according to this applied environment parameter
Determine the safe class of current authentication, and determine according to the corresponding relation of safe class with fingerprint minutiae matching amount
The coupling amount of the safe class of current authentication, thus the characteristic of the fingerprint image that the user extracted is inputted
With the sample characteristics data prestored according to predetermined operation rule and determined by the amount of coupling compare to realize body
Part checking.The embodiment of the present invention can adjust fingerprint characteristic data according to the applied environment parameter intelligent of terminal
Coupling amount, thus reduce terminal system power consumption, reduce the wasting of resources.
Accompanying drawing explanation
In order to be illustrated more clearly that embodiment of the present invention technical scheme, required in embodiment being described below
The accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is some realities of the present invention
Execute example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the schematic flow diagram of a kind of fingerprint verification method that the embodiment of the present invention provides；
Fig. 2 is the schematic diagram of characteristic of image of taking the fingerprint in Fig. 1；
Fig. 3 is the schematic block diagram of a kind of terminal that the embodiment of the present invention provides；
Fig. 4 is the structure composition schematic diagram of a kind of terminal that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is a part of embodiment of the present invention rather than all
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained under dynamic premise, broadly falls into the scope of protection of the invention.
Should be appreciated that when using in this specification and in the appended claims, term " includes " and " bag
Contain " indicate described feature, entirety, step, operation, element and/or the existence of assembly, but be not precluded from
One or more further features, entirety, step, operation, element, assembly and/or its set existence or add
Add.
See Fig. 1, be the schematic flow diagram of a kind of fingerprint verification method that the embodiment of the present invention provides.This fingerprint
Authentication method may operate in smart mobile phone (such as Android phone, IOS mobile phone etc.), panel computer or electronics
In the terminals such as reader.As it can be seen, the method includes below step.
S101, if receiving the fingerprint image of user's input, obtains the applied environment parameter of terminal.
In embodiments of the present invention, user can input fingerprint image by fingerprint reading systems.This fingerprint is read
Taking equipment be a kind of by light fingerprint sensor by the fingerprint imaging on finger, be then transmit to the number of processor
According in storehouse, and and data base in the sample characteristics data of storage compare, to identify fingerprint owner's identity
A kind of equipment.
When after the fingerprint graph receiving user's input, need to carry out fingerprint pretreatment.The mesh of fingerprint pretreatment
Be the quality of fingerprint image and enhancing contrast ratio, the definition improving user's input, in order to carry out feature
Data are extracted.Fingerprint pretreatment mainly includes the enhancing of fingerprint segmentation, fingerprint, binaryzation and micronization processes.
Owing to fingerprint pretreatment is disclosed prior art, here is omitted.
In embodiments of the present invention, applied environment parameter include but not limited to address parameter, time parameter, with
And the application program etc. opened in terminal.As this applied environment parameter can be address parameter, time parameter,
And a kind of in the application program opened in terminal or more than one combination in any.It is to be appreciated that
Applied environment parameter can also include illumination parameter, humidity parameter and altitude parameters etc..Multiple by obtaining
Different applied environment parameters is to grasp the applied environment that terminal is current more fully, more accurately.Specifically
Ground, in embodiments of the present invention, as passed through GPS (Global Positioning System global location
System) obtain address parameter, obtain time parameter by time system current in terminal, simultaneously can the
Three application softwaries obtain the application program etc. being in open mode in terminal, thus realize applied environment parameter
Acquisition.
S102, according to the safe class of described applied environment parameter determination current authentication.
In embodiments of the present invention, each applied environment parameter obtained in S101 is correspondingly arranged on respective pre-
If weight, determine the safe class of current authentication according to the default weight that applied environment parameter is corresponding.
It is the application program opened in address parameter, time parameter and terminal as S101 obtains applied environment parameter,
The weight of address parameter is set to 50%, and time parameter is set to 30%, the application program opened in terminal
It is set to 20%, address parameter can be subdivided at home simultaneously and in the street, compare at home greatly
The street is safer；Time parameter can be subdivided into daytime and evening, and it is safer that usual daytime compares evening；Eventually
The application program opened in end can be subdivided into general application program and pay class application program, the most typically
Application program can be calendar, video etc., by contrast, pay class application program safe class ratio one
As application program safe class want height.Each applied environment parameter can be entered by user according to practical situation
Row divides and arranges the weight of correspondence, thus more accurately, comprehensively grasps the applied environment that terminal is current,
And determine the safe class of current authentication according to this.It should be noted that determining according to applied environment parameter
The when of the safe class of current authentication, it is not limited to by the weight different for applied environment parameter configuration
So that it is determined that safe class.
S103, according to the corresponding relation of default safe class with the fingerprint characteristic data amount of coupling, determines current
The coupling amount of the safe class of certification.
Fingerprint minutiae matching amount refers to the characteristic number of the fingerprint image of user's input of sample characteristics data and extraction
According to comparison quantity.Wherein, sample characteristics data have referred to the mould that finger print identifying needs to store in advance
Plate fingerprint image characteristic of correspondence data.Specifically, characteristic refers to that finds from fingerprint image is claimed
For the data point of node, it may refer to the bifurcated of stricture of vagina lines, terminates or the coordinate position at the place that loops.Generally
One fingerprint image has 70 data points, and each data point has the uniqueness characteristic of more than 7 kinds, because of
This, a fingerprint image can produce at least 490 characteristics.Certainly the algorithm having is data point and direction
Information combination can produce more characteristic, and wherein directional information indicates the pass between each data point
System.In embodiments of the present invention, sample characteristics data can be corresponding whole of the template fingerprint image prestored
Characteristic or Partial Feature data.
In embodiments of the present invention, according to the safe class of the certification determined in S102 and safe class and fingerprint
The corresponding relation of characteristic coupling amount, determines the coupling amount that the safe class of current authentication is corresponding.Need
Illustrating, safe class measures into positively related corresponding relation, i.e. safe class with fingerprint characteristic data coupling
The highest, corresponding fingerprint characteristic data coupling amount is the most, can be being incremented by without evident regularity, it is also possible to be
Present being incremented by of stepped-style, be not construed as limiting herein.
S104, extracts the characteristic of the fingerprint image of described user input.
Specifically, the characteristic of the fingerprint image extracting user's input has various ways, such as the spy of this extraction
Levy data bulk can with in S103 determined by coupling amount consistent, it is also possible to the quantity of sample characteristics data
Unanimously.In embodiments of the present invention, it is preferably and extracts user's input according to coupling amount determined by S103
The characteristic of fingerprint image, reduce the operand during extracting according to this, reduce terminal system power consumption.
S105, according to determined by coupling amount the characteristic of extraction is carried out with the sample characteristics data prestored
Comparison is to be authenticated.
Specifically, in embodiments of the present invention, fingerprint image can be divided into some regions, and will be corresponding
The sample characteristics data in region and the characteristic extracted carry out comparison one by one.Certainly alignments not office
Limit this, as used centered by the central area of fingerprint image successively outwards with the form of circumference radiation
Sample characteristics data and the characteristic extracted are carried out comparison one by one.In embodiments of the present invention, according to
Determined by coupling amount by the characteristic extracted in S104 and the sample data that prestores according to from fingerprint image
Start centered by central area the most outwards to compare to carry out authentication, thus increase the accurate of certification
Property.
Illustrate, in this fingerprint verification method application terminal unlocking screen, if according to the applied environment obtained
The safe class ratio of parameter determination current authentication is time relatively low, and the fingerprint minutiae matching that this safe class is corresponding
Amount is 50 characteristics.With reference to Fig. 2, the schematic diagram of the characteristic of the image that takes the fingerprint.As it can be seen,
Extracting the characteristic of fingerprint image of user's input when, start, from central area 1, the spy that takes the fingerprint
Levy.If extracting this 50 characteristics, from region 1, first extract 25 characteristics, so
After outwards expand region 2 to circumference forms of radiation from central area 1, until the feature quantity extracted reaches
50, thus the characteristic of the fingerprint image extracting user's input is completed according to coupling amount 50.Wherein,
Sample characteristics data can be set to whole characteristics such as 490 of template fingerprint image, then will carry
50 characteristics taken as 490 sample characteristics data from the central area of fingerprint image outwards with circle
The form that week radiates is compared.When the coupling amount 50 arrived under current application environment, then stop computing,
And release terminal screen lock state, to enter terminal system, otherwise, terminal maintains screen lock state.
The embodiment of the present invention is by obtaining the applied environment parameter of terminal, and comes really according to this applied environment parameter
Determine the safe class of current authentication, and determine according to the corresponding relation of safe class with fingerprint minutiae matching amount
The coupling amount of the safe class of current authentication, thus the characteristic of the fingerprint image that the user extracted is inputted
With the sample characteristics data prestored according to predetermined operation rule and determined by the amount of coupling compare to realize body
Part checking.The embodiment of the present invention can adjust fingerprint characteristic data according to the applied environment parameter intelligent of terminal
Coupling amount, thus reduce terminal system power consumption, reduce the wasting of resources.
With reference to Fig. 3, the schematic block diagram of a kind of terminal that the embodiment of the present invention provides, this terminal 20 includes connecing
Receive unit 21, acquiring unit 22, first determine unit 23, second determine unit 24, extraction unit 25,
And comparing unit 26.
Wherein, receive unit 21, for the fingerprint image receiving user's input and the sample characteristics data prestored.
Acquiring unit 22, for obtaining the applied environment parameter of terminal.This applied environment parameter includes that address is joined
A kind of in the application program opened in number, time parameter and terminal or more than one any group
Close.
First determines unit 23, for the safe class according to described applied environment parameter determination current authentication.
Specifically, first determines that unit 23 determines according to the default weight that applied environment parameter is corresponding and currently recognizes
The safe class of card, this applied environment parameter includes opening in address parameter, time parameter and terminal
A kind of in application program or more than one combination in any.
Second determines unit 24, for corresponding with fingerprint characteristic data coupling amount according to the safe class preset
Relation, determines the coupling amount of the safe class of current authentication.
Extraction unit 25, for extracting the characteristic of the fingerprint image of described user input.Specifically, carry
Take unit 25 according to determined by coupling amount extract the characteristic of fingerprint image of described user input.
Comparing unit 26, for coupling amount determined by basis by special to the characteristic of extraction and the sample prestored
Levy data to compare to be authenticated.Specifically, during comparison, fingerprint image can be divided into some districts
Territory, and the sample characteristics data of respective regions and the characteristic extracted are carried out comparison one by one.The most also
Can centered by the central area of fingerprint image successively outwards with the form of circumference radiation by sample characteristics data
Comparison one by one is carried out with the characteristic extracted.
The embodiment of the present invention obtains the applied environment parameter of terminal by acquiring unit 22, and first determines unit 23
Determine the safe class of current authentication according to this applied environment parameter, second determines that unit 24 is according to safety etc.
Level determines the amount of coupling of the safe class of current authentication, comparison list with the corresponding relation of fingerprint minutiae matching amount
The characteristic of the fingerprint image that the user of extraction is inputted by unit 26 and the sample characteristics data prestored are according to predetermined
Operational rule and determined by coupling amount compare to realize authentication.The embodiment of the present invention can basis
The applied environment parameter intelligent ground of terminal adjusts fingerprint characteristic data coupling amount, thus reduces terminal system power consumption,
Reduce the wasting of resources.
With reference to Fig. 4, the structure composition schematic diagram of a kind of terminal that the embodiment of the present invention provides.This terminal 30 is wrapped
Include: input equipment 301, memorizer 302 and processor 303, wherein:
Input equipment 301, for the fingerprint image receiving user's input and the sample characteristics data prestored.Specifically
In realization, this input equipment 301 can include keyboard, acoustic input device, touch input equipment etc..
Memorizer 302, for storing the routine data with various functions.In implementing, the present invention implements
The memorizer 302 of example can be system storage, such as, (the such as RAM) of volatibility, non-volatile
(such as ROM, flash memory etc.), or both combinations.In implementing, the memorizer of the embodiment of the present invention
302 can also is that the external memory storage outside system, such as, disk, CD, tape etc..
Processor 303, for calling the routine data of storage in memorizer 302, and performs following operation: if
Receive the fingerprint image of user's input, obtain the applied environment parameter of terminal；
Safe class according to described applied environment parameter determination current authentication；
According to the corresponding relation of default safe class with the fingerprint characteristic data amount of coupling, determine current authentication
The coupling amount of safe class；
Extract the characteristic of the fingerprint image of described user input；
Coupling amount determined by according to the characteristic of extraction and the sample characteristics data prestored are compared with
It is authenticated.
The embodiment of the present invention is by obtaining the applied environment parameter of terminal, and comes really according to this applied environment parameter
Determine the safe class of current authentication, and determine according to the corresponding relation of safe class with fingerprint minutiae matching amount
The coupling amount of the safe class of current authentication, thus the characteristic of the fingerprint image that the user extracted is inputted
With the sample characteristics data prestored according to predetermined operation rule and determined by the amount of coupling compare to realize body
Part checking.The embodiment of the present invention can adjust fingerprint characteristic data according to the applied environment parameter intelligent of terminal
Coupling amount, thus reduce terminal system power consumption, reduce the wasting of resources.
In several embodiments provided herein, it should be understood that disclosed method, only show
Meaning property, can realize by another way.
The sequence of steps of the method for the embodiment of the present invention can be adjusted according to actual needs, merges or delete.
The unit of the terminal of the embodiment of the present invention can carry out integrating according to actual needs, Further Division or delete.
These are only the preferred embodiment of invention, rather than invention is done any pro forma restriction.This area
Technical staff can impose change and the improvement of various equivalent on the basis of above-described embodiment, all in claim
In the range of the equivalent variations done or modification, within the scope of the comprising of invention all should be fallen into.
Claims (10)
1. a fingerprint verification method, it is characterised in that including:
If receiving the fingerprint image of user's input, obtain the applied environment parameter of terminal；
Safe class according to described applied environment parameter determination current authentication；
According to the corresponding relation of default safe class with the fingerprint characteristic data amount of coupling, determine current authentication
The coupling amount of safe class；
Extract the characteristic of the fingerprint image of described user input；
Coupling amount determined by according to the characteristic of extraction and the sample characteristics data prestored are compared with
It is authenticated.
2. fingerprint verification method as claimed in claim 1, it is characterised in that described according to described applied environment
The safe class of parameter determination current authentication, including:
The safe class of current authentication is determined according to the default weight that applied environment parameter is corresponding, described
Applied environment parameter includes the one in the application program opened in address parameter, time parameter and terminal
Or more than one combination in any.
3. fingerprint verification method as claimed in claim 1, it is characterised in that the described user of described extraction inputs
The characteristic of fingerprint image, including:
Coupling amount determined by according to extracts the characteristic of the fingerprint image of described user input.
4. fingerprint verification method as claimed in claim 1, it is characterised in that mate determined by described basis
The characteristic of extraction is compared to be authenticated by amount with the sample characteristics data prestored, including:
Fingerprint image is divided into some regions, and by the sample characteristics data of respective regions and the spy extracted
Levy data and carry out comparison one by one.
5. fingerprint verification method as claimed in claim 1, it is characterised in that mate determined by described basis
The characteristic of extraction is compared to be authenticated by amount with the sample characteristics data prestored, including:
Centered by the central area of fingerprint image successively outwards with the form of circumference radiation by sample characteristics data
Comparison one by one is carried out with the characteristic extracted.
6. a terminal, it is characterised in that including:
Receive unit, for the fingerprint image receiving user's input and the sample characteristics data prestored；
Acquiring unit, for obtaining the applied environment parameter of terminal；
First determines unit, for the safe class according to described applied environment parameter determination current authentication；
Second determines unit, for closing according to the safe class preset is corresponding with fingerprint characteristic data coupling amount
System, determines the coupling amount of the safe class of current authentication；
Extraction unit, for extracting the characteristic of the fingerprint image of described user input；
Comparing unit, for coupling amount determined by basis by the characteristic of extraction and the sample characteristics prestored
Data compare to be authenticated.
7. terminal as claimed in claim 6, it is characterised in that
Described first determines that unit determines specifically for the default weight corresponding according to applied environment parameter
The safe class of current authentication, described applied environment parameter includes address parameter, time parameter and terminal
In a kind of in the application program opened or more than one combination in any.
8. terminal as claimed in claim 6, it is characterised in that
Described extraction unit extracts the fingerprint image of described user input specifically for coupling amount determined by basis
The characteristic of picture.
9. terminal as claimed in claim 6, it is characterised in that
Described comparing unit specifically for being divided into some regions by fingerprint image, and by the sample of respective regions
Characteristic and the characteristic extracted carry out comparison one by one.
10. terminal as claimed in claim 6, it is characterised in that
Described comparing unit is specifically for outwards radiating with circumference successively centered by the central area of fingerprint image
Form sample characteristics data and the characteristic extracted are carried out comparison one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610209717.6A CN105912901A (en) | 2016-04-06 | 2016-04-06 | Fingerprint authentication method and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610209717.6A CN105912901A (en) | 2016-04-06 | 2016-04-06 | Fingerprint authentication method and terminal |
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Family
ID=56744645
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| CN201610209717.6A Pending CN105912901A (en) | 2016-04-06 | 2016-04-06 | Fingerprint authentication method and terminal |
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| CN106778152A (en) * | 2016-11-11 | 2017-05-31 | 努比亚技术有限公司 | A kind of unlocked by fingerprint device, terminal and method |
| CN107918760A (en) * | 2016-10-11 | 2018-04-17 | 三星电子株式会社 | Electronic device and its control method with multiple fingerprint sensing patterns |
| CN108765664A (en) * | 2018-05-25 | 2018-11-06 | Oppo广东移动通信有限公司 | Unlocked by fingerprint method, apparatus, terminal and storage medium |
| CN108924343A (en) * | 2018-06-19 | 2018-11-30 | Oppo广东移动通信有限公司 | Control method of electronic device, device, storage medium and electronic equipment |
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| CN110741620A (en) * | 2017-06-12 | 2020-01-31 | 希迪普公司 | Terminal and control method thereof |
| CN111414601A (en) * | 2020-03-27 | 2020-07-14 | 中国人民解放军国防科技大学 | Continuous identity authentication method, system and medium for kylin mobile operating system |
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| CN111414601B (en) * | 2020-03-27 | 2023-10-03 | 中国人民解放军国防科技大学 | Continuous identity authentication method, system and medium for kylin mobile operation system |
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