CN109558772A - A kind of method, apparatus of fingerprint recognition, terminal and computer readable storage medium - Google Patents
A kind of method, apparatus of fingerprint recognition, terminal and computer readable storage medium Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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Abstract
The invention discloses a kind of methods of fingerprint recognition, comprising: judgment part fingerprint detection array scanning to the corresponding average gray value of gray value data whether be more than first threshold；If being more than first threshold, the dispersion degree of gray value data is calculated；Judge dispersion degree whether in starting range；If starting whole fingerprint detection arrays in starting range and carrying out finger scan；This method is determining that the object in Terminal fingerprints identification region is just to start whole fingerprint detection arrays when whether the fingerprint i.e. surface texture of object meets the feature of fingerprint, avoids the unlatching of the whole fingerprint detection array as caused by erroneous judgement, reduces power consumption of terminal.The invention also discloses a kind of device of fingerprint recognition, terminal and computer readable storage mediums, have above-mentioned beneficial effect.
Description
Technical field
The present invention relates to touch detection technical field, in particular to a kind of method, apparatus of fingerprint recognition, terminal and calculating
Machine readable storage medium storing program for executing.
Background technique
The range of fingerprint identification technology application at present is more and more wider, is especially used as identification means in the terminal
It is widely used.Fingerprint detection array is generally used to execute fingerprint recognition work.Wherein, fingerprint detection array is according to default
Frequency carry out full array scanning to obtain finger print data, when being identified as being formed there are when finger touch according to the finger print data
Fingerprint image carries out fingerprint recognition.I.e. which requires fingerprint detection array to be constantly in the working condition of full array scanning, this
The power consumption that sample will lead to mobile terminal is very big.Therefore, power consumption when terminal carries out fingerprint recognition how is reduced, is art technology
Personnel's technical issues that need to address.
Summary of the invention
The object of the present invention is to provide a kind of method, apparatus of fingerprint recognition, terminal and computer readable storage mediums, keep away
Exempt from the unlatching of the whole fingerprint detection array as caused by erroneous judgement, reduces power consumption of terminal.
The present invention provides a kind of method of fingerprint recognition, which comprises
Judgment part fingerprint detection array scanning to the corresponding average gray value of gray value data whether more than the first threshold
Value；
If being more than the first threshold, the dispersion degree of the gray value data is calculated；
Judge the dispersion degree whether in starting range；
If starting whole fingerprint detection arrays in the starting range and carrying out finger scan.
The present invention also provides a kind of devices of fingerprint recognition, comprising:
First judgment module, the corresponding average gray of gray value data arrived for judgment part fingerprint detection array scanning
Whether value is more than first threshold；
Dispersion degree computing module, for calculating the gray scale when the average gray value is more than the first threshold
The dispersion degree of Value Data；
Second judgment module, for judging the dispersion degree whether in starting range；
Starting module, for when the dispersion degree is in the starting range, then starting whole fingerprint detection arrays
Carry out finger scan.
The present invention also provides a kind of terminals with fingerprint identification function, comprising:
Memory, for storing computer program；
Processor performs the steps of when for executing the computer program
Judgment part fingerprint detection array scanning to the corresponding average gray value of gray value data whether more than the first threshold
Value；
If being more than first threshold, the dispersion degree of gray value data is calculated；
Judge dispersion degree whether in starting range；
If starting whole fingerprint detection arrays in starting range and carrying out finger scan.The present invention also provides a kind of meters
Calculation machine readable storage medium storing program for executing is stored with computer program on the computer readable storage medium, and the computer program is located
Reason device performs the steps of when executing
Judgment part fingerprint detection array scanning to the corresponding average gray value of gray value data whether more than the first threshold
Value；
If being more than first threshold, the dispersion degree of gray value data is calculated；
Judge dispersion degree whether in starting range；
If starting whole fingerprint detection arrays in starting range and carrying out finger scan.
Provided by the present invention the invention discloses a kind of methods of fingerprint recognition, pass through judgment part fingerprint detection array
Whether the corresponding average gray value of the gray value data scanned is more than first threshold；If being more than first threshold, gray scale is calculated
The dispersion degree of Value Data；Judge dispersion degree whether in starting range；If starting whole fingerprint inspections in starting range
It surveys array and carries out finger scan.(object in Terminal fingerprints identification region only is being determined in the case where conditions above meets
Body is fingerprint, i.e. when the surface texture of object meets the feature of fingerprint) just start whole fingerprint detection arrays progress finger scans,
The unlatching of the whole fingerprint detection array as caused by erroneous judgement fingerprint object is avoided, and then reduces power consumption of terminal.The present invention is also
Device, terminal and the computer readable storage medium of a kind of fingerprint recognition are provided, there is above-mentioned beneficial effect, it is no longer superfluous herein
It states.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow chart of the method for fingerprint recognition provided by the embodiment of the present invention；
Fig. 2 is the flow diagram of the method for specific fingerprint recognition provided by the embodiment of the present invention；
Fig. 3 is the schematic diagram of fingerprint detection array provided by the embodiment of the present invention；
Fig. 4 is the status diagram in the detection battle array course of work of partial fingerprints provided by the embodiment of the present invention；
Fig. 5 is the structural block diagram of the device of fingerprint recognition provided by the embodiment of the present invention；
Fig. 6 is the structural block diagram of the device of another fingerprint recognition provided by the embodiment of the present invention；
Fig. 7 is the structural block diagram of the terminal provided by the embodiment of the present invention with fingerprint identification function.
Specific embodiment
The present invention provides the method, apparatus, terminal and computer readable storage medium of a kind of fingerprint recognition, avoid due to
Whole fingerprint detection array caused by erroneous judgement is opened, and power consumption of terminal is reduced.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Current fingerprint detection array is when there are be exactly starting whole fingerprint detection array when object for fingerprint identification region
It is detected.Cannot distinguish between other conductors such as glabrous skin or key, to will appear false triggering, cause user not
There is the case where faulty operation mobile terminal in the case where knowing, reduces the usage experience of user.Such as when user puts mobile phone
Enter trouser pocket, the fingerprint detection array that leg skin is possible to trigger always starting whole at this time is detected；In addition if trousers
There are the smooth conductors such as key or coin in pocket, and these conductors and identification region part contact, it is also possible to triggering starting is complete
The fingerprint detection array in portion is detected.And the present embodiment can be improved and start whole fingerprint detection arrays progress finger scans
Accuracy rate is to reduce power consumption of terminal, and terminal is made to have the function of preventing false triggering.Specifically referring to FIG. 1, Fig. 1 is this hair
The flow chart of the method for fingerprint recognition provided by bright embodiment；This method may include:
S110, judgment part fingerprint detection array scanning to the corresponding average gray value of gray value data whether more than
One threshold value.
Specifically, the present embodiment detects array and whole fingerprint detections by the way that fingerprint detection array is divided into partial fingerprints
Array detects array by partial fingerprints and (there is the region for carrying out fingerprint detection i.e. in terminal, originally to fingerprint identification region
Embodiment does not make restriction to the region shape, position etc., has been merely representative of this region for acquiring finger print information) exist
Object is tentatively identified, to exclude other objects of non-fingerprint, such as glabrous skin or coin key etc..By part
The screening of fingerprint detection array, which can be improved, starts the reliability that whole fingerprint detection arrays carry out finger scan, that is, avoids complete
The power consumption that portion's fingerprint detection array is constantly in terminal caused by the working condition of full array scanning is very big, in turn avoids false triggering
Fingerprint recognition improves the accuracy of Terminal fingerprints identification.
Wherein, partial fingerprints detection array is a part in whole fingerprint detection arrays.User can according to oneself
Demand is specified.The present embodiment does not limit the selection of partial fingerprints detection array, i.e., does not limit partial fingerprints inspection
Array ratio shared in whole fingerprint detection arrays and partial fingerprints detection array are surveyed in whole fingerprint detection arrays
Position etc..
The step can tentatively exclude to connect with fingerprint identification region by the way that average gray value to be compared with first threshold
Contacting surface accumulates the case where very little, because under normal circumstances, user needs to open a terminal or can incite somebody to action when needing to carry out fingerprint recognition
The finger that fingerprint is crossed in typing is covered in the fingerprint identification region of terminal.Therefore fingerprint identification region almost can be by finger at this time
Finger tip covering, when the area coverage of object in fingerprint identification region is very small, it is believed that be not intended to execute fingerprint recognition
Operation.The present embodiment does not limit the size of specific first threshold.
In the present embodiment average gray value be partial fingerprints are detected array scanning to gray value data be averaged and obtain
?.The trigger process of the present embodiment gray value data that characterizing portion fingerprint detection array scanning does not arrive.The present embodiment is only
Obtain partial fingerprints detect array scanning to gray value data corresponding average gray value when carry out step S110.
For example, in the present embodiment terminal can be scanned using partial fingerprints detection array always, and will partially refer to
Line detect array scanning to gray value data calculate corresponding average gray value and be compared with first threshold.It is also possible to full
Triggering is scanned using partial fingerprints detection array when certain condition of foot, and the gray scale that partial fingerprints detection array scanning is arrived
Value Data calculate corresponding average gray value be compared with first threshold (certain condition is not defined here, can be with
The selection smaller mode of power consumption carries out selective mechanisms).The latter can further save the power consumption of terminal compared to the former.Such as it can
To pass through the fingerprint detection of capacitance detecting or optical profile type.If triggering uses when selection capacitance detecting realization meets certain condition
Partial fingerprints detection array is optional when being scanned, and the gray value data that judgment part fingerprint detection array scanning arrives is corresponding
Whether average gray value is more than that first threshold can also include: before
Detect the capacitance on capacitance electrode；
Judge whether capacitance is more than capacitance threshold value；
If being more than capacitance threshold value, actuating section fingerprint detection array carries out finger scan and obtains gray value data.
The preliminary finger of Terminal fingerprints identification region is detected specifically, being realized in the specific embodiment using capacitance electrode
It is realized using capacitance detecting and the preliminary finger of Terminal fingerprints identification region is detected.In order to realize low-power consumption, without finger
Fingerprint detection array is to close when touch fingerprint identification region, is recycled in the way of capacitance detecting and does preliminary finger detection.
When capacitance is more than capacitance threshold value, then tentatively it is judged as there is finger touch, opens partial fingerprints detection array at this time and carry out fingerprint
Scan the gray value on the corresponding sensing unit of fetching portion fingerprint detection array.Here gray value data includes whole portion
Point fingerprint detection array carries out collecting for the gray value on the corresponding sensing unit that finger scan obtains.I.e. by being detected from appearance
Such low-power consumption detection mode does preliminary judgement, can reduce power consumption of terminal.If can terminate when being less than capacitance threshold value
This detection.The step of continuing to execute the capacitance on detection capacitance electrode can be returned.The present embodiment does not limit specifically
Capacitance detecting form, such as can be from hold detection be also possible to mutual tolerance detection.
If being more than S120, first threshold, the dispersion degree of gray value data is calculated.
Specifically, average gray value is more than first threshold, then prove there is conductor (to can be understood as fingerprint identification region at this time
On examined object) contact fingerprint array surface, and contact area is sufficiently large.But at this time there is no exclude be coin or
The case where other objects such as glabrous skin.Therefore in order to improve accuracy, the inspection of the whole fingerprint as caused by erroneous judgement is avoided
It surveys array to open, reduces power consumption of terminal, it is also necessary to further judge whether the conductive surface is uneven, i.e. the surface line of object
Whether reason meets the feature of fingerprint, to trigger always when fingerprint battle array detection column being avoided to be covered by the smooth conductors such as key part
Whole fingerprint detection array unlatchings carry out detection to appearance the case where power consumption, or the conductor especially coarse by other texture
It triggers always.It is more than even first threshold, then calculates the dispersion degree of gray value data.Determine that terminal refers to by dispersion degree
Whether object in line identification region is feature that whether the fingerprint i.e. surface texture of object meets fingerprint.
Quantity when calculating dispersion degree using gray value data is not limited in the present embodiment.Either using all
Gray value data calculate dispersion degree, be also possible to the gray value data of selected part to calculate dispersion degree.The present embodiment
Specific selection mode is not limited, can be and randomly select, and is also possible to according to the close of the corresponding contact object of gray value yet
Degree goes selection (as selection is in close contact).The fingerprint detection array pair of close contact is for example chosen by further screening
The dispersion degree that the gray value data for the sensing unit answered obtains is more accurate, and the accuracy of identification can be improved.Here due to
Calculate the change of the starting range that is correspondingly arranged of difference of the range of data decimation also being adapted to property.The present embodiment is herein no longer
It is defined.
If being less than first threshold, terminate this detection, returns to initial step.Such as it can return and continue to execute detection
The step of capacitance on capacitance electrode.
S130, judge dispersion degree whether in starting range.
Specifically, may determine that whether the numerical value of the dispersion degree meets entry condition i.e. after dispersion degree is calculated
Whether in starting range.Here starting range is gray value interval, such as small more than lower limit gray value (i.e. lower threshold)
In upper limit gray value (i.e. upper limit threshold), or greater than the range of setting gray value.The present embodiment is not to the starting range
Specific value be defined.
Optionally, judge dispersion degree whether starting range in include:
Judge whether the dispersion degree is greater than default third dispersion degree threshold value；If more than, then judge starting range
It is interior.
Specifically, the present embodiment does not limit the size of third dispersion degree threshold value, it can be determines according to actual conditions.If opening
Dynamic range be only arranged lower threshold i.e. third dispersion degree threshold value when, when dispersion degree be less than the third dispersion degree threshold value when
Illustrate the object not instead of fingerprint, smooth conductor, such as smooth skin or key.Therefore pass through third dispersion degree threshold
Value can be avoided smooth conductor such as skin, and the brings such as key miss touching problem.Improve the accuracy of fingerprint triggering.Further
A possibility that object at this time is fingerprint is very big, but can also have the conductor corresponding dispersion degree more coarse than fingerprint
In starting range.Therefore touching problem is missed in order to avoid more coarse conductor bring optionally judge that dispersion degree is
It is no to include: in starting range
Judge whether the dispersion degree is greater than default third dispersion degree threshold value and is less than default 4th dispersion degree threshold
Value；If so, judging in starting range.
Specifically, the present embodiment does not limit the size of the 4th dispersion degree threshold value (i.e. upper limit threshold), it can be according to reality
Situation determines.The light smaller than fingerprint dispersion degree is eliminated by determining the corresponding dispersion degree range of fingerprint in the embodiment
The false triggering of sliding conductor and the coarse conductor bigger than fingerprint dispersion degree, ensure that the reliability of fingerprint triggering, thus
When fingerprint battle array detection column being avoided to be covered by the smooth conductors such as key part, finger detection is triggered always to which the case where power consumption goes out
It is existing, or triggered always by the especially coarse conductor of other texture.Avoid the inspection of the whole fingerprint as caused by erroneous judgement
It surveys array to open, reduces power consumption of terminal.
The false triggering of the conductors such as glabrous skin and key is excluded by step S120 and S130.
If S140, starting in range, starts whole fingerprint detection arrays and carry out finger scans.
Specifically, if starting whole fingerprint detection arrays in starting range and carrying out finger scan.If not in starting model
In enclosing, then terminate this detection.Such as it can return and continue to execute detection from the step of holding the capacitance on electrode.
The present embodiment does not limit the process that whole fingerprint detection arrays carry out the fingerprint recognition after finger scan, as long as can
To realize fingerprint recognition, such as it can be optical fingerprint detection.
Based on the above-mentioned technical proposal, the method for fingerprint recognition provided in an embodiment of the present invention, when average gray value is more than the
When one threshold value, it can determine whether there is conductor to contact fingerprint detection array surface at this time, and contact area is sufficiently large.Then discrete journey is utilized
Degree further judges whether the conductive surface is uneven, that is, judges that the surface texture of the conductor meets the feature of fingerprint.To
When fingerprint detection array being avoided to be covered by the smooth conductors such as key part, whole fingerprint detection array unlatchings are triggered always and are examined
It surveys to which the case where power consumption occurs, or is triggered always by the especially coarse conductor of other texture.I.e. only in dispersion degree
Just start whole fingerprint detection arrays in the case where meeting condition and carry out finger scan, hence it is evident that improves due to erroneous judgement fingerprint object
The number that whole fingerprint detection array caused by body is opened, and then reduce power consumption of terminal.
Based on the above embodiment, in order to improve the reliability that dispersion degree calculates, the dispersion degree of gray value data is calculated
It can specifically include:
The gray value data of second threshold is selected more than from gray value data as pre-selection gray value data；Wherein,
Two threshold values are greater than first threshold；
Corresponding dispersion degree is calculated using the pre-selection gray value data.
Wherein, the present embodiment does not limit the numerical value of second threshold specifically,
Specifically, the gray value data of second threshold is selected more than in the present embodiment from gray value data as pre-selection ash
The purpose of angle value data be in order to ensure the corresponding fingerprint detection array of these select gray values sensing unit all by
Conductor is in close contact.Judge whether the conductive surface is uneven, and deterministic process is in the present embodiment: being detected from partial fingerprints
Pick out the corresponding sensing unit of a part of fingerprint detection array in array, the gray value on these sensing units require be more than
Second threshold, this is then to calculate this batch of induction in order to ensure these select sensing units are all in close contact by conductor
The dispersion degree of the gray value of unit.When dispersion degree is located in the corresponding numerical value of starting range (as be more than lower threshold and
Less than upper limit threshold, or only above lower threshold), judge that the surface texture of the conductor meets the feature of fingerprint.To avoid
When fingerprint array is covered by the smooth conductors such as key part, whole fingerprint detection array unlatchings are triggered always and detect consuming
The situation of electricity occurs, or is triggered always by the especially coarse conductor of other texture.Only meet condition in dispersion degree
In the case where just start whole fingerprint detection arrays and carry out finger scans, hence it is evident that improve as caused by erroneous judgement fingerprint object
The number that whole fingerprint detection arrays are opened, and then reduce power consumption of terminal.
Further when calculating dispersion degree, it can use whole pre-selection gray value datas and be used as calculating source data,
Can be reduction calculation amount selects the pre-selection gray value data of predetermined ratio to calculate as dispersion from pre-selection gray value data
Then gray value data calculates gray value data using dispersion and calculates corresponding dispersion degree.The former is calculated discrete
Degree is more accurate, and the latter's calculation amount less saves hardware resource, and user can be determined according to the actual situation.
Wherein, the numerical value of predetermined ratio is not limited in the present embodiment.Such as predetermined ratio can be whole pre-selection ashes
Angle value is also possible to 90% pre-selection gray value.User can be configured according to the actual situation.
Fig. 2 is turned next to, the detailed process of a kind of method of specific fingerprint recognition is given.When setting capacitance threshold value
For 2pF, first threshold 100, second threshold 80, the lower threshold (i.e. third dispersion degree threshold value) for starting range is 15,
Upper limit threshold (i.e. the 4th dispersion degree threshold value) is 50.Referring to FIG. 3, assume that entire fingerprint detection array is 10x10, then the following figure
Grey grid is exactly the partial fingerprints detection array for doing finger detection and using.Certain finger detection process is simulated according to upper threshold value
It is as follows:
The current state at T1 moment is to detect capacitance 1pF from when holding detection, due to 1pF < 2pF threshold value, continue
It is detected from holding；The current state at T2 moment is to detect capacitance 2.2pF from when holding detection, due to 2.2pF > 2pF, beat
Open partial fingerprints detection array；The current state at T3 moment is that partial fingerprints detect array detection, and partial fingerprints detection array obtains
The gray value average value arrived is 90, due to 90 < 100, closes part fingerprint detection array.Continue from appearance detection；The T4 moment
Current state be to detect from when holding detection from capacitance 2.1pF, due to 2.1pF > 2pF, open partial fingerprints and detect battle array
Column；The current state at T5 moment is that partial fingerprints detect array detection, the gray value average value that partial fingerprints detection array obtains
It is 105, due to 105 > 100, picks out effective contact induction unit from partial fingerprints detection array in next step；The T6 moment
Current state be to select part effectively contact induction unit, what gray value (influence value of sensing unit) was obtained using the T5 moment
Corresponding gray value, is selected according to second threshold, such as is selected result and be illustrated in fig. 4 shown below Dark grey grid, that is, deeply
The corresponding gray value of grey grid is all greater than 80, and the corresponding gray value of light grey grid is smaller than 80；The T7 moment works as
Preceding state is to calculate the dispersion degree of effective contact induction unit gradation value, when gray value (influence value of sensing unit) uses T5
Carve the corresponding gray value obtained, it is assumed that the dispersion degree calculated is 20, because 15 < 20, and 20 < 50, then judge
It is detected at this time for effective finger.
Based on the above embodiment, in order to improve each reliability that threshold value is arranged, the present embodiment can also include:
Continuously there is number of the dispersion degree not in starting range in statistics in the given time；
When number is greater than frequency threshold value, prompt information is issued.
Specifically, the present embodiment does not limit the numerical value of specific predetermined time and frequency threshold value, but this time
It should be a lesser time interval.Such as 10 seconds.Even continuously occurs dispersion degree in 10 seconds not in starting range
(i.e. there are conductors for fingerprint identification region, but all think that it is not finger) number be more than frequency threshold value when, will issue and mention
Show information.Prompt information can prompt user, allow user according to the actual situation, such as all be really non-fingerprint tough, or
Person is that user has used finger but erroneous judgement occurred, and the adjustment of being adapted to property starts range at this time.It is also possible to prompt
To terminal, terminal can collect the feedback information of user after receiving prompt information, and be started according to the feedback information of user
The adjustment of range.Pass through prompt information, it can be ensured that start the reliability of range, carry out the case where reducing power consumption of terminal
Under, identification accuracy is improved, to improve user experience.
It is situated between below to the device of fingerprint recognition provided in an embodiment of the present invention, terminal and computer readable storage medium
It continues, device, terminal and the computer readable storage medium of fingerprint recognition described below and the side of above-described fingerprint recognition
Method can correspond to each other reference.
Referring to FIG. 5, Fig. 5 is the structural schematic diagram of the device of fingerprint recognition provided by the embodiment of the present invention；The device
May include:
First judgment module 100, the gray value data arrived for judgment part fingerprint detection array scanning are corresponding average
Whether gray value is more than first threshold；
Dispersion degree computing module 200, for when average gray value be more than first threshold when, calculate gray value data from
The degree of dissipating；
Second judgment module 300, for judging dispersion degree whether in starting range；
Starting module 400, for when dispersion degree is in starting range, then starting whole fingerprint detection arrays and being referred to
Line scanning.
Based on the above embodiment, referring to FIG. 6, the device can also include:
Capacitive detection module 500, for detecting the capacitance on capacitance electrode；
Third judgment module 600, for judging whether capacitance is more than capacitance threshold value；
Detection module 700, for when capacitance is more than capacitance threshold value, actuating section fingerprint detection array to carry out fingerprint and sweeps
It retouches to obtain gray value data.
Based on above-mentioned any embodiment, dispersion degree computing module 200 may include:
First selecting unit, for selecting more than the gray value data of second threshold from gray value data as pre-selection ash
Angle value data；Wherein, second threshold is greater than first threshold；
Dispersion degree computing unit, for calculating corresponding dispersion degree using pre-selection gray value data.
Based on above-mentioned any embodiment, which can also include:
Cue module, for counting the number for dispersion degree continuously occur not in starting range in the given time；When
When number is greater than frequency threshold value, prompt information is issued.
Referring to FIG. 7, Fig. 7 is the structural block diagram of the terminal provided by the embodiment of the present invention with fingerprint identification function.
The terminal can generate bigger difference because configuration or performance are different, may include one or more processors
(central processing units, CPU) 810 (for example, one or more processors) and memory 832, one
Or (such as one or more mass memories are set the storage medium 830 of more than one storage application program 842 or data 844
It is standby).Wherein, memory 832 and storage medium 830 can be of short duration storage or persistent storage.Memory 832 and storage medium
830, which can also be used as a unified memory, exists.The program for being stored in storage medium 830 may include one or more
Module (diagram does not mark), each module may include to the series of instructions operation in terminal.Further, processor
812 can be set to communicate with storage medium 830, and the series of instructions operation in storage medium 830 is executed in terminal 800.
Terminal 800 can also include one or more power supplys 826, one or more wired or wireless networks connect
Mouth 850, one or more input/output interfaces 858, and/or, one or more operating systems 841, such as
Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM etc..
Step in the method for fingerprint recognition described in above-mentioned Fig. 1 to Fig. 4 is based on structure reality shown in Fig. 7 by terminal
It is existing.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, terminal embodiment described above is only schematical, for example, module or unit
Division, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple modules or list
Member can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device, module or unit
Indirect coupling or communication connection, can be electrical property, mechanical or other forms.
Unit may or may not be physically separated as illustrated by the separation member, as module or unit
The component of display may or may not be physical module or unit, it can and it is in one place, or can also divide
On cloth to multiple network modules or unit.Some or all of the modules therein or unit can be selected according to the actual needs
It achieves the purpose of the solution of this embodiment.
In addition, each functional module or unit in each embodiment of the application can integrate in one processing unit,
It is also possible to modules or unit physically exists alone, can also be integrated at one with two or more modules or unit
It manages in unit.Above-mentioned integrated module or unit both can take the form of hardware realization, can also use software function module
Or the form of unit is realized.
If integrated unit is realized in the form of software function module or unit and sells or make as independent product
Used time can store in a computer readable storage medium.Based on this understanding, the technical solution essence of the application
On all or part of the part that contributes to existing technology or the technical solution can be with the shape of software product in other words
Formula embodies, which is stored in a storage medium, including some instructions are used so that a calculating
Machine equipment (can be personal computer, funcall device or the network equipment etc.) executes each embodiment method of the application
All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only
Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. is various to deposit
Store up the medium of program code.
Step in various embodiments of the present invention method can be sequentially adjusted, merged and deleted according to actual needs.This
Inventing each embodiment kind device and module in terminal and unit can be combined, divided and deleted according to actual needs.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
?.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Above to method, apparatus, terminal and the computer readable storage medium of a fingerprint recognition provided by the present invention
It is described in detail.Used herein a specific example illustrates the principle and implementation of the invention, the above reality
The explanation for applying example is merely used to help understand method and its core concept of the invention.It should be pointed out that for the art
For those of ordinary skill, without departing from the principle of the present invention, can with several improvements and modifications are made to the present invention,
These improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of method of fingerprint recognition, which is characterized in that the described method includes:
Judgment part fingerprint detection array scanning to the corresponding average gray value of gray value data whether be more than first threshold；
If being more than the first threshold, the dispersion degree of the gray value data is calculated；
Judge the dispersion degree whether in starting range；
If starting whole fingerprint detection arrays in the starting range and carrying out finger scan.
2. the method according to claim 1, wherein the gray scale that the judgment part fingerprint detection array scanning arrives
Before whether the corresponding average gray value of Value Data is more than first threshold, further includes:
Detect the capacitance on capacitance electrode；
Judge whether the capacitance is more than capacitance threshold value；
If being more than the capacitance threshold value, starts the partial fingerprints detection array progress finger scan and obtain the gray value number
According to.
3. method according to claim 1 or 2, which is characterized in that calculate the dispersion degree of the gray value data, wrap
It includes:
The gray value data of second threshold is selected more than from the gray value data as pre-selection gray value data；Wherein, institute
Second threshold is stated greater than the first threshold；
Corresponding dispersion degree is calculated using the pre-selection gray value data.
4. the method according to claim 1, wherein whether described judge the dispersion degree in starting range
It is interior, comprising:
Judge whether the dispersion degree is greater than default third dispersion degree threshold value；
If more than, then judge starting range in.
5. according to the method described in claim 3, it is characterized by further comprising:
The number for the dispersion degree continuously occur not in the starting range is counted in the given time；
When the number is greater than frequency threshold value, prompt information is issued.
6. a kind of device of fingerprint recognition characterized by comprising
First judgment module, for judgment part fingerprint detection array scanning to the corresponding average gray value of gray value data be
No is more than first threshold；
Dispersion degree computing module, for calculating the gray value number when the average gray value is more than the first threshold
According to dispersion degree；
Second judgment module, for judging the dispersion degree whether in starting range；
Starting module is carried out for when the dispersion degree is in the starting range, then starting whole fingerprint detection arrays
Finger scan.
7. device according to claim 6, which is characterized in that further include:
Capacitive detection module, for detecting the capacitance on capacitance electrode；
Third judgment module, for judging whether the capacitance is more than capacitance threshold value；
Detection module is carried out for when the capacitance is more than the capacitance threshold value, starting the partial fingerprints detection array
Finger scan obtains the gray value data.
8. device according to claim 6 or 7, which is characterized in that the dispersion degree computing module, comprising:
First selecting unit, for selecting more than the gray value data of second threshold from the gray value data as pre-selection ash
Angle value data；Wherein, the second threshold is greater than the first threshold；
Dispersion degree computing unit, for calculating corresponding dispersion degree using the pre-selection gray value data.
9. a kind of terminal with fingerprint identification function characterized by comprising
Memory, for storing computer program；
Processor realizes the method for the fingerprint recognition as described in any one of claim 1 to 5 when for executing the computer program
The step of.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program, realizing the method for fingerprint recognition as described in any one of claim 1 to 5 when the computer program is executed by processor
Step.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710883702.2A CN109558772B (en) | 2017-09-26 | 2017-09-26 | Fingerprint identification method, fingerprint identification device, terminal and computer readable storage medium |
| PCT/CN2018/106950 WO2019062660A1 (en) | 2017-09-26 | 2018-09-21 | Fingerprint recognition method and device, terminal, and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883702.2A CN109558772B (en) | 2017-09-26 | 2017-09-26 | Fingerprint identification method, fingerprint identification device, terminal and computer readable storage medium |
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| CN109558772B CN109558772B (en) | 2023-04-18 |
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Also Published As
| Publication number | Publication date |
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| WO2019062660A1 (en) | 2019-04-04 |
| CN109558772B (en) | 2023-04-18 |
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