CN106778151A - Method for identifying ID and device based on person's handwriting - Google Patents
Method for identifying ID and device based on person's handwriting Download PDFInfo
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- CN106778151A CN106778151A CN201611000453.XA CN201611000453A CN106778151A CN 106778151 A CN106778151 A CN 106778151A CN 201611000453 A CN201611000453 A CN 201611000453A CN 106778151 A CN106778151 A CN 106778151A
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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
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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
- G06V40/30—Writer recognition; Reading and verifying signatures
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Abstract
The embodiment of the present invention provides a kind of method for identifying ID and device based on person's handwriting, and the method includes：The person's handwriting fluency feature in user's handwriting input word is obtained, the person's handwriting fluency is characterized in the handwriting characteristic for reflecting appropriation；Person's handwriting fluency feature is compared with the reference writing writing feature of the validated user for prestoring, determines whether user is validated user.Some handwriting characteristics that are intrinsic, being difficult to avoid that often are had for appropriation, in the handwriting of imitator, writing for imitator can be recognized accurately based on these features, such that it is able to accurately identify the identity legitimacy of user.
Description
Technical field
The present invention relates to information of mobile terminal security technology area, more particularly to a kind of user identity identification based on person's handwriting
Method and apparatus.
Background technology
At present, with mobile communication technology complete upgrading, the developing rapidly of hardware technology, intelligent terminal rapid popularization,
Intelligent mobile terminal has become indispensable instrument in people's work, life.Handwriting input is by hand on the touchscreen
Write word to be input into, because its input mode that is simple, quick, being not required to the background knowledges such as phonetic and turn into numerous users' selections.
Often be stored with the live photo and other private datas, finance data of user in intelligent mobile terminal, and
Installation relates to the client applications such as Mobile banking.In order to protect these information not stolen by others, it is necessary to current behaviour
The user for making terminal carries out identity legitimacy identification.At present, one kind carries out user identity legitimacy knowledge based on handwriting input person's handwriting
It is otherwise：Carried out by by the reference writing that current operation user input person's handwriting and validated user are prestored in the terminal
Contrast, determines whether operation user is authorized user.
Although the above method can to a certain extent ensure the security of user terminal, if someone deliberately imitates legal
The person's handwriting of user, will cause the accuracy of identity legitimacy recognition result to be severely impacted.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of method for identifying ID and device based on person's handwriting, is used to carry
The accuracy of identity legitimacy recognition result high.
The embodiment of the present invention provides a kind of method for identifying ID based on person's handwriting, including：
The person's handwriting fluency feature in user's handwriting input word is obtained, the person's handwriting fluency is characterized in that row is imitated in reflection
For handwriting characteristic；
The person's handwriting fluency feature is compared with the reference writing writing feature of the validated user for prestoring, really
Whether the fixed user is validated user.
Alternatively, the reference writing writing feature by the person's handwriting fluency feature and the validated user for prestoring
It is compared, determines whether the user is validated user, including：
According to the matching degree of every kind of person's handwriting fluency feature and corresponding reference writing writing feature, with reference to default every kind of
The weighted value of person's handwriting fluency feature, determines the matching degree of the user and the validated user；
If the matching degree is less than predetermined threshold value, it is determined that the user is illegal user.
Alternatively, methods described also includes：
The handwriting pattern feature of user's handwriting input word is obtained, the handwriting pattern is characterized in the reflection user
The feature of personal writing style；
It is described to be compared the person's handwriting fluency feature with the reference writing writing feature of the validated user for prestoring
Compared with, determine whether the user is validated user, including：
By the person's handwriting fluency feature and the handwriting pattern feature, the reference writing with the validated user for prestoring
Writing feature is compared, and determines whether the user is validated user.
The embodiment of the present invention provides a kind of user identity identification device based on person's handwriting, including：
First acquisition module, for obtaining the person's handwriting fluency feature in user's handwriting input word, the person's handwriting is smooth
Property be characterized in reflect appropriation handwriting characteristic；
Determining module, for the person's handwriting fluency feature and the reference writing of the validated user for prestoring to be write into spy
Levy and be compared, determine whether the user is validated user.
Method for identifying ID and device based on person's handwriting provided in an embodiment of the present invention, when user is led on the touchscreen
It is special by the person's handwriting fluency for obtaining the reflection appropriation feature in user's handwriting input word when crossing handwriting input word
Levy, with the comparative result based on the person's handwriting fluency feature Yu the reference writing writing feature of validated user, whether determine user
It is validated user.Some pens that are intrinsic, being difficult to avoid that often are had for appropriation, in the handwriting of imitator
Mark feature, writing for imitator can be recognized accurately based on these features, and the identity such that it is able to accurately identify user is legal
Property.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the method for identifying ID embodiment one based on person's handwriting provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the method for identifying ID embodiment two based on person's handwriting provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the method for identifying ID embodiment three based on person's handwriting provided in an embodiment of the present invention
Fig. 4 is the structural representation of the user identity identification device embodiment one based on person's handwriting provided in an embodiment of the present invention
Figure；
Fig. 5 is the structural representation of the user identity identification device embodiment two based on person's handwriting provided in an embodiment of the present invention
Figure；
Fig. 6 is the structural representation of the user identity identification device embodiment three based on person's handwriting provided in an embodiment of the present invention
Figure.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The term for using in embodiments of the present invention is the purpose only merely for description specific embodiment, and is not intended to be limiting
The present invention." one kind ", " described " and " being somebody's turn to do " of singulative used in the embodiment of the present invention and appended claims
It is also intended to include most forms, unless context clearly shows that other implications, " various " generally comprise at least two, but not
Exclude and include at least one situation.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, represent
There may be three kinds of relations, for example, A and/or B, can represent：Individualism A, while there is A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent forward-backward correlation pair as if a kind of relation of "or".
It will be appreciated that though XXX may be described using term first, second, third, etc. in embodiments of the present invention, but
These XXX should not necessarily be limited by these terms.These terms are only used for being distinguished from each other open XXX.For example, not departing from implementation of the present invention
In the case of example scope, an XXX can also be referred to as the 2nd XXX, and similarly, the 2nd XXX can also be referred to as an XXX.
Depending on linguistic context, word as used in this " if ", " if " can be construed to " ... when " or
" when ... " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " such as
Fruit detection (condition or event of statement) " can be construed to " when it is determined that when " or " in response to determine " or " when detection (statement
Condition or event) when " or " in response to detection (condition or event of statement) ".
Also, it should be noted that term " including ", "comprising" or its any other variant be intended to nonexcludability
Comprising, so that commodity or system including a series of key elements not only include those key elements, but also including without clear and definite
Other key elements listed, or it is this commodity or the intrinsic key element of system also to include.In the feelings without more limitations
Under condition, the key element limited by sentence "including a ...", it is not excluded that in the commodity or system including the key element also
There is other identical element.
Fig. 1 is the flow chart of the method for identifying ID embodiment one based on person's handwriting provided in an embodiment of the present invention, this
The method for identifying ID that embodiment is provided can be performed by a user identity identification device, user identity identification dress
Put and can be implemented as software, or be embodied as the combination of software and hardware, the user identity identification device can be integrally disposed in
In the terminal device with touch-screen of user, such as smart mobile phone, panel computer etc..As shown in figure 1, the method is including as follows
Step：
Step 101, the person's handwriting fluency feature obtained in user's handwriting input word.
Wherein, the person's handwriting fluency is characterized in the handwriting characteristic for reflecting appropriation.
The main thought of the embodiment of the present invention is：Inevitably go out during person's handwriting imitation is carried out for imitator
Some existing writing features carry out identification to current handwriting input user, are referred to as in these writing feature embodiment of the present invention
Person's handwriting fluency feature, such as specifically can include flyback, velocity variations, a buckling, handwriting thickness change etc. feature, imitate
Person often has obvious difference in these features with validated user, and these are characterized as that person's handwriting usually goes out in imitating
Existing feature or person's handwriting are difficult to the feature for specially avoiding in forging, based on the collection to these features then corresponding to former person's handwriting
Reference writing feature is compared, when being mismatched with reference writing feature, even if the person's handwriting and reference writing are in other features
It is upper that there is similarity very high, still believe that the person's handwriting is the intentional person's handwriting for imitating.
Based on above-mentioned main thought, active user obtains it and is input into during word when handwriting input word is triggered
Person's handwriting fluency feature.Wherein, in one kind optionally realizes scene, triggering obtains the person's handwriting fluency during input word
The condition of feature can be any handwriting input scene, but, in one kind optionally realizes scene, triggering obtains input word
During person's handwriting fluency feature condition can be when user triggers specific word input scene, such as be related to use
When application program, the unlocking screen of family signature, it is related to financial application program, etc..
In practical application, in order to ensure the accuracy of recognition result, the person's handwriting fluency feature of acquisition is often multiple, from
And, alternatively, the person's handwriting fluency feature obtained in user's handwriting input word can be implemented as：
By the identification of the sampled point repeatability to being input into person's handwriting, the feature of flybacking of input person's handwriting is obtained；And/or,
The speed of each sampled point according to input person's handwriting, obtains the writing speed variation characteristic of input person's handwriting；And/or,
The pressure of each sampled point according to input person's handwriting, obtain input person's handwriting writes pressure change feature；And/or,
How much is the pixel of each sampled point according to input person's handwriting, obtains the handwriting thickness variation characteristic of input person's handwriting.
Wherein, for feature of flybacking, validated user is when word is input into, it should or seldom will not occur what is flyback
Situation, and imitator, in order to imitate the person's handwriting of validated user, in fact it could happen that situation about flybacking is relatively more.In fact, user input
Person's handwriting be that the track for having multiple pixels is constituted, corresponding pixel is not different in the same time, in the present embodiment, can pass through
The pixel locus of points identified the handwriting is sampled, and records number of times that each sampled point is triggered to obtain the feature of flybacking of the person's handwriting,
The feature of flybacking can be described as whetheing there is the number of times that flybacks or flyback, and the corresponding sampling point position in place etc. that flybacks.Wherein,
Sampling can be the sampling that pixel is carried out based on certain time interval.
It is understood that in practical application, the situation that user accurately triggers same sampled point twice is not susceptible to, past
It is past to have slight deviations, that is to say, that after first time triggers certain sampled point, even if occurring flybacking now in the sample point
As, the pixel position of second triggering is often not quite identical with the sampled point, it is therefore contemplated that it is certain it is less away from
Triggered at least twice from interior priority is considered as operation of flybacking.
Furthermore it is also possible to understand, such as two strokes, the two strokes may have connection in certain sampled point, such as
" ten " word, horizontal and perpendicular cross section is successively triggered twice, but such case should not be considered as flybacking, therefore, this
In embodiment, the continuous multiple sample point of the characterizing definition that flybacks all occurs at least twice by the situation of repeated trigger, so that, such as
When fruit identifies that the multiple continuous sampling points in input person's handwriting have the feature of repeated trigger, determine have back in the input person's handwriting
Retouch feature.
For velocity variations feature, each sampled point in input person's handwriting can be entered according to triggered time sequencing
Row arrangement, and the time that each sampled point is triggered is recorded, so that, the speed of latter sampled point is according at a distance of previous sampled point
Distance and the triggered time difference determine.After the speed that each sampled point is determined, can be according to the speed of neighbouring sample point
Situation of change determines the writing speed variation characteristic of input person's handwriting.Usually, the writing speed of validated user is more uniform, will not
There is obvious velocity jump situation, and imitator often occurs obvious writing speed catastrophe.
Furthermore it is also possible to pass through the time span needed for recording user input word, the speed of user input word is obtained
Feature, the time span can refer to the time of the complete word to be all input into of user input.In practical application, can be based on use
Family has been input into after word the time point finished as input to the detection of the trigger action of certain control, such as send control, carry
Hand over control, confirm control etc..Usually, compared to the writing speed of validated user, the writing speed of imitator is slower.
It is similar with writing speed variation characteristic for writing pressure change feature, will not be described here.Can be based on use
The pressure sensor set under the touch-screen of family terminal device detects the pressure value of each sample point.
For handwriting thickness variation characteristic, each sampled point for being input into person's handwriting is made up of at least one pixel.But
Because the writing physical strength of user is different, the input person's handwriting not person's handwriting lines with substantially uniformity are often caused, particularly with
Imitator, the person's handwriting of validated user is deliberately imitated due to it, and the handwriting thickness change of its input person's handwriting is often more obvious.Pass through
It is determined that the how much i.e. shared elemental area size of the pixel of each sampled point of input person's handwriting, and carry out pixel shared by neighbouring sample point
How many comparings, can obtain the handwriting thickness variation characteristic of input person's handwriting.
Above-mentioned various person's handwriting fluency features are only for example, in practical application, such as can also include person's handwriting interrupt diagnostic,
Person's handwriting actual situation variation characteristic etc..
Step 102, person's handwriting fluency feature is compared with the reference writing writing feature of the validated user for prestoring
Compared with determining whether user is validated user.
In the embodiment of the present invention, the reference writing writing feature of validated user includes corresponding with person's handwriting fluency feature
Feature, the reference writing writing feature is write by repeatedly carrying out sample word to validated user, by sample word
Obtained from acquisition, the statistics of the features described above in writing process, it is the word writing training based on validated user and obtains
's.The acquisition process of the person's handwriting fluency feature in reference writing writing feature may refer to the fluent writing of foregoing input person's handwriting
The explanation of property feature.
What deserves to be explained is, in some specific handwriting input scenes, the word of active user's input is legal use
The sample word at family, i.e. active user input word should be specific word content, and with for obtaining validated user
It is identical with reference to the sample word of writing feature, such as it is characterized in based on validated user with reference to writing under the scene of electronic signature
The multiple writing process of oneself name is obtained, and active user is equally input into the name of validated user under the scene.
But, in some handwriting input scenes, it is not required that the word of active user's input is specific word content, and currently
The word of user input is also different from the sample word of the reference writing feature for obtaining validated user.For above two
Scape, the various person's handwriting fluency spies of the example above can be used, because from the essence of person's handwriting fluency feature, in fact
The behavioural characteristic of the imitator being embodied in writing process, associates less with written contents.But, from the instruction of reference writing feature
The angle of the necessity for carrying out identification to user in the angle and practical application of practicing amount of calculation is set out, the embodiment of the present invention
It is more suitable for the first handwriting input scene.
Alternatively, after the fluent writing feature for obtaining active user's input person's handwriting, by the person's handwriting fluency feature
It is that corresponding person's handwriting fluency feature in reference writing writing feature is compared with the reference writing writing feature of validated user,
To determine whether current user is validated user.
Specifically, can be according to the matching degree of every kind of person's handwriting fluency feature and corresponding reference writing writing feature, really
Determine the matching degree of user and validated user；Or, spy is write with corresponding reference writing according to every kind of person's handwriting fluency feature
The matching degree levied, with reference to the weighted value of default every kind of person's handwriting fluency feature, determines the matching degree of user and validated user,
When matching degree is less than predetermined threshold value, user is determined for illegal user, when matching degree is greater than or equal to the predetermined threshold value
When, determine that user is validated user.
In a kind of optional implementation, can define matching degree be input into person's handwriting various person's handwriting fluency features in
The number of the matching degree of corresponding reference writing writing feature person's handwriting fluency feature higher.In another optional implementation
In, it is the weighted value according to every kind of person's handwriting fluency feature that can define matching degree, and is input into every kind of person's handwriting stream of person's handwriting
With the matching degree of corresponding reference writing writing feature and the weighted score that determines in smooth property feature.
Wherein, the matching degree in person's handwriting fluency feature to corresponding reference writing writing feature can be presented as corresponding spy
The coincidence degree of value indicative or indicatrix.Wherein, characteristic value is such as the number of times that flybacks, and indicatrix is such as embodiment writing speed
The pressure history of pressure change feature is write in the speed change curves of variation characteristic, embodiment, embodies handwriting thickness change special
The handwriting thickness change curve levied.If being input into certain characteristic variation curve and phase in corresponding fixed reference feature change curve of person's handwriting
Certain threshold value is respectively less than with the difference of the corresponding characteristic value of sampled point, then it is assumed that this feature has a matching degree high, assign certain
With angle value.
In the present embodiment, when user passes through handwriting input word on the touchscreen, by obtaining user's handwriting input text
The person's handwriting fluency feature of the reflection appropriation feature in word, with the reference based on the person's handwriting fluency feature Yu validated user
The comparative result of handwriting feature, determines whether user is validated user.For appropriation, the writing pencil of imitator
Some handwriting characteristics that are intrinsic, being difficult to avoid that often are had in mark, can be recognized accurately imitator's based on these features
Write, such that it is able to accurately identify the identity legitimacy of user.
Fig. 2 is the flow chart of the method for identifying ID embodiment two based on person's handwriting provided in an embodiment of the present invention, such as
Shown in Fig. 2, comprise the following steps：
Step 201, obtain person's handwriting fluency feature of the user in the unlocking screen interface in the unblock word of handwriting input.
Step 202, person's handwriting fluency feature is compared with the reference writing writing feature of the validated user for prestoring
Compared with.
If step 203, determining user according to comparative result for validated user, lock screen is solved.
If determining that user, for illegal user, continues lock-screen according to comparative result.
The present embodiment is the scene to schematically illustrating that user identity identification process is carried out by taking unlocking screen scene as an example
Under, the reference writing writing feature of validated user is carried out accordingly by the process to the multiple input unblock word of validated user
Person's handwriting fluency signature analysis and obtain, for repeatedly in every time obtain same person's handwriting fluency feature characteristic value,
Characteristic value that can be big by rejecting difference, remaining characteristic value is asked for average mode and is determined.
Due to the various private datas that are often stored with the terminal device of user, log in Web bank etc. and pay application,
To ensure that these data messages are not stolen by people, spied upon, present terminal device all has screen locking function, i.e., when user exits end
End operation certain hour after or user trigger screen locking operation after, screen locking, when needing to operate terminal device again, need
It is input into screen-unlock password.And the word password that person's handwriting password, i.e. validated user are write with oneself is because with exclusive handwriting characteristic,
Can by as a kind of screen-lock password improving the security of user's significant data information.
In the present embodiment, in order to avoid the person's handwriting password of user is deliberately imitated, active user is when solution screen operation is carried out
Need to carry out identification to it, to ensure the security of solution screen operation.Specifically identification procedure may refer to shown in Fig. 1
Introduction in embodiment.
Fig. 3 is the flow chart of the method for identifying ID embodiment three based on person's handwriting provided in an embodiment of the present invention, such as
Shown in Fig. 3, the method can also comprise the following steps：
Step 301, the person's handwriting fluency feature and handwriting pattern feature that obtain user's handwriting input word.
Wherein, handwriting pattern is characterized in the feature for reflecting individual subscriber writing style.
Step 302, by person's handwriting fluency feature and handwriting pattern feature, the reference writing with the validated user for prestoring
Writing feature is compared, and determines whether user is validated user.
In the present embodiment, in order to further improve the accuracy of user identity identification result, except contrast, active user is defeated
Enter outside the person's handwriting fluency feature reference writing fluency feature corresponding with validated user of person's handwriting, also further contrast is current uses
Family is input into the handwriting pattern feature reference writing style characteristics corresponding with validated user of person's handwriting.So as to the reference of validated user
Handwriting feature includes reference writing fluency feature and the category feature of reference writing style characteristics two.
Wherein, handwriting pattern feature is such as textural characteristics, writing feature of specific stroke of input word etc..Person's handwriting sample
The extracting mode of formula feature may be referred to person's handwriting in the prior art and know method for distinguishing realization.
In the present embodiment, by person's handwriting fluency feature and handwriting pattern feature, the reference with the validated user for prestoring
Handwriting feature is compared, actually by the person's handwriting fluency feature and reference writing writing feature of current input person's handwriting
The reference writing fluency feature for including carries out correspondence comparing, by the handwriting pattern feature and reference writing of current input person's handwriting
The reference writing style characteristics that writing feature includes carry out correspondence comparing.If the matching degree of person's handwriting fluency feature is higher than one
Determine threshold value, and handwriting pattern feature matching degree also above certain threshold value, then it is assumed that active user is validated user, otherwise, is
Illegal user.
Wherein, the metric form of the matching degree of the metric form of the matching degree of handwriting pattern feature and person's handwriting fluency feature
It is similar, repeat no more.
The user identity identification device of one or more embodiments of the invention described in detail below.These user identity
Identifying device can be implemented in the architecture of terminal device.It will be understood by those skilled in the art that these user identity
The step of identifying device can be used commercially available nextport hardware component NextPort to be instructed by this programme is configured to constitute.
Fig. 4 is the structural representation of the user identity identification device embodiment one based on person's handwriting provided in an embodiment of the present invention
Figure, as shown in figure 4, the user identity identification device includes：First acquisition module 11, determining module 12.
First acquisition module 11, for obtaining the person's handwriting fluency feature in user's handwriting input word, the person's handwriting stream
Smooth property is characterized in the handwriting characteristic for reflecting appropriation.
Determining module 12, for the person's handwriting fluency feature and the reference writing of the validated user for prestoring to be write
Feature is compared, and determines whether the user is validated user.
Alternatively, first acquisition module 11 specifically for：
By the identification of the sampled point repeatability to being input into person's handwriting, the feature of flybacking of the input person's handwriting is obtained；And/or,
The speed of each sampled point according to the input person's handwriting, the writing speed change for obtaining the input person's handwriting is special
Levy；And/or,
The pressure of each sampled point according to the input person's handwriting, obtain the input person's handwriting writes pressure change spy
Levy；And/or,
How much is the pixel of each sampled point according to the input person's handwriting, obtains the handwriting thickness change of the input person's handwriting
Feature.
Alternatively, the determining module 12 includes：First determining unit 121, the second determining unit 122.
First determining unit 121, for according to every kind of person's handwriting fluency feature and corresponding reference writing writing feature
Matching degree, with reference to the weighted value of default every kind of person's handwriting fluency feature, determines matching for the user and the validated user
Degree.
Second determining unit 122, if being less than predetermined threshold value for the matching degree that first determining unit determines,
Then determine that the user is illegal user.
The method that Fig. 4 shown devices can perform embodiment illustrated in fig. 1, the part that the present embodiment is not described in detail can join
Examine the related description to embodiment illustrated in fig. 1.In implementation procedure and the technique effect embodiment shown in Figure 1 of the technical scheme
Description, will not be repeated here.
Fig. 5 is the structural representation of the user identity identification device embodiment two based on person's handwriting provided in an embodiment of the present invention
Figure, as shown in figure 5, on the basis of embodiment illustrated in fig. 4, the user identity identification device also includes：Unlocked state 21.
First acquisition module 11 specifically for：Obtain the unblock of user handwriting input in unlocking screen interface
Person's handwriting fluency feature in word.
Unlocked state 21, if determining that the user, for validated user, solves lock screen for the determining module.
The method that Fig. 5 shown devices can perform embodiment illustrated in fig. 2, the part that the present embodiment is not described in detail can join
Examine the related description to embodiment illustrated in fig. 2.In implementation procedure and the technique effect embodiment shown in Figure 2 of the technical scheme
Description, will not be repeated here.
Fig. 6 is the structural representation of the user identity identification device embodiment three based on person's handwriting provided in an embodiment of the present invention
Figure, as shown in fig. 6, on the basis of embodiment illustrated in fig. 4, the user identity identification device also includes：Second acquisition module 31.
Second acquisition module 31, the handwriting pattern feature for obtaining user's handwriting input word, the person's handwriting sample
Formula is characterized in the feature for reflecting the individual subscriber writing style.
The determining module 12 specifically for：It is and advance by the person's handwriting fluency feature and the handwriting pattern feature
The reference writing writing feature of the validated user of storage is compared, and determines whether the user is validated user.
The method that Fig. 6 shown devices can perform embodiment illustrated in fig. 3, the part that the present embodiment is not described in detail can join
Examine the related description to embodiment illustrated in fig. 3.In implementation procedure and the technique effect embodiment shown in Figure 3 of the technical scheme
Description, will not be repeated here
The built-in function and structure of the user identity identification device based on person's handwriting are the foregoing described, in practice, user's body
Part identifying device can realize being terminal device, including：Touch-screen, processor；
The touch-screen, the person's handwriting for receiving user's word of handwriting input on the touch-screen.
The processor, is coupled to the touch-screen, special for obtaining the person's handwriting fluency in user's handwriting input word
Levy, the person's handwriting fluency is characterized in the handwriting characteristic for reflecting appropriation；By the person's handwriting fluency feature with prestore
The reference writing writing feature of validated user be compared, determine whether the user is validated user.
Wherein, the touch-screen is made up of touching medium and display screen.
Alternatively, the terminal device also includes：Pressure sensor, is coupled to the touch-screen and the processor.
Alternatively, the processor is additionally operable to perform all or part in method and step shown in above-mentioned Fig. 1, Fig. 2, Fig. 3
Step.
Device embodiment described above is only schematical, wherein the unit illustrated as separating component can
To be or may not be physically separate, the part shown as unit can be or may not be physics list
Unit, you can with positioned at a place, or can also be distributed on multiple NEs.It can according to the actual needs be selected
In some or all of module realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each implementation method can
Realized by the mode of general hardware platform necessary to add, naturally it is also possible to by hardware.Based on such understanding, above-mentioned skill
The part that art scheme substantially contributes to prior art in other words can be embodied in the form of product, and the computer is produced
Product can be stored in a computer-readable storage medium, and such as ROM/RAM, magnetic disc, CD, including some instructions are used to so that one
Platform computer installation (can be personal computer, server, or network equipment etc.) performs each embodiment or embodiment
Some parts described in method.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of method for identifying ID based on person's handwriting, it is characterised in that including：
The person's handwriting fluency feature in user's handwriting input word is obtained, the person's handwriting fluency is characterized in reflection appropriation
Handwriting characteristic；
The person's handwriting fluency feature is compared with the reference writing writing feature of the validated user for prestoring, institute is determined
State whether user is validated user.
2. method according to claim 1, it is characterised in that the person's handwriting in the acquisition user handwriting input word is smooth
Property feature, including：
By the identification of the sampled point repeatability to being input into person's handwriting, the feature of flybacking of the input person's handwriting is obtained；And/or,
The speed of each sampled point according to the input person's handwriting, obtains the writing speed variation characteristic of the input person's handwriting；With/
Or,
The pressure of each sampled point according to the input person's handwriting, obtain the input person's handwriting writes pressure change feature；With/
Or,
How much is the pixel of each sampled point according to the input person's handwriting, and the handwriting thickness change for obtaining the input person's handwriting is special
Levy.
3. method according to claim 2, it is characterised in that it is described by the person's handwriting fluency feature with prestore
The reference writing writing feature of validated user is compared, and determines whether the user is validated user, including：
According to the matching degree of every kind of person's handwriting fluency feature and corresponding reference writing writing feature, with reference to default every kind of person's handwriting
The weighted value of fluency feature, determines the matching degree of the user and the validated user；
If the matching degree is less than predetermined threshold value, it is determined that the user is illegal user.
4. method according to claim 1, it is characterised in that methods described also includes：
The handwriting pattern feature of user's handwriting input word is obtained, the handwriting pattern is characterized in the reflection individual subscriber
The feature of writing style；
It is described that the person's handwriting fluency feature is compared with the reference writing writing feature of the validated user for prestoring, really
Whether the fixed user is validated user, including：
The person's handwriting fluency feature and the handwriting pattern feature, the reference writing with the validated user for prestoring are write
Feature is compared, and determines whether the user is validated user.
5. method according to any one of claim 1 to 4, it is characterised in that the acquisition user handwriting input word
In person's handwriting fluency feature, including：
Obtain person's handwriting fluency feature of the user in the unlocking screen interface in the unblock word of handwriting input；
Methods described also includes：
If it is determined that the user is validated user, lock screen is solved.
6. a kind of user identity identification device based on person's handwriting, it is characterised in that including：
First acquisition module, for obtaining the person's handwriting fluency feature in user's handwriting input word, the person's handwriting fluency is special
It is the handwriting characteristic for reflecting appropriation to levy；
Determining module, for the person's handwriting fluency feature to be entered with the reference writing writing feature of the validated user for prestoring
Row compares, and determines whether the user is validated user.
7. device according to claim 6, it is characterised in that first acquisition module specifically for：
By the identification of the sampled point repeatability to being input into person's handwriting, the feature of flybacking of the input person's handwriting is obtained；And/or,
The speed of each sampled point according to the input person's handwriting, obtains the writing speed variation characteristic of the input person's handwriting；With/
Or,
The pressure of each sampled point according to the input person's handwriting, obtain the input person's handwriting writes pressure change feature；With/
Or,
How much is the pixel of each sampled point according to the input person's handwriting, and the handwriting thickness change for obtaining the input person's handwriting is special
Levy.
8. device according to claim 7, it is characterised in that the determining module includes：
First determining unit, for the matching degree according to every kind of person's handwriting fluency feature and corresponding reference writing writing feature,
With reference to the weighted value of default every kind of person's handwriting fluency feature, the matching degree of the user and the validated user is determined；
Second determining unit, if being less than predetermined threshold value for the matching degree that first determining unit determines, it is determined that
The user is illegal user.
9. device according to claim 6, it is characterised in that also include：
Second acquisition module, the handwriting pattern feature for obtaining user's handwriting input word, the handwriting pattern feature
It is the feature for reflecting the individual subscriber writing style；
The determining module specifically for：By the person's handwriting fluency feature and the handwriting pattern feature, and prestore
The reference writing writing feature of validated user is compared, and determines whether the user is validated user.
10. the device according to any one of claim 6 to 9, it is characterised in that first acquisition module is specifically used
In：Obtain person's handwriting fluency feature of the user in the unlocking screen interface in the unblock word of handwriting input；
Described device also includes：
Unlocked state, if determining that the user, for validated user, solves lock screen for the determining module.
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