CN107690655A - Fingerprint register method, apparatus and electric terminal - Google Patents

Fingerprint register method, apparatus and electric terminal Download PDF

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Publication number
CN107690655A
CN107690655A CN201780000990.0A CN201780000990A CN107690655A CN 107690655 A CN107690655 A CN 107690655A CN 201780000990 A CN201780000990 A CN 201780000990A CN 107690655 A CN107690655 A CN 107690655A
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China
Prior art keywords
fingerprint
image
registration
amplitude
evaluating
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代理军
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Huiding Technology Co Ltd
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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
    • G06V40/50—Maintenance of biometric data or enrolment thereof

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Collating Specific Patterns (AREA)
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Abstract

The embodiment of the present application provides a kind of fingerprint register method, apparatus and electric terminal, wherein, fingerprint register method includes：According to multiple fingerprint images of typing, multiple registration evaluating datas corresponding to multiple fingerprint images are obtained respectively, wherein, the registration evaluating data includes at least one of：Fingerprint area data in the image quality data of the fingerprint image, the fingerprint image；Calculate the amplitude of variation of multiple registration evaluating datas；Judge the relation of the amplitude of variation and predetermined amplitude change threshold, fingerprint register is carried out according to judged result, to judge whether fingerprint image can carry out fingerprint register by calculating the amplitudes of variation of multiple registration evaluating datas and judging the relation of the amplitude of variation and predetermined amplitude change threshold, improve fingerprint register difficulty crowd and carry out the success rate of fingerprint register, and then improve the usage experience of such crowd.

Description

Fingerprint register method, apparatus and electric terminal
Technical field
The invention relates to fingerprint identification technology field, more particularly to a kind of fingerprint register method, apparatus and electricity Sub- terminal.
Background technology
With the development of fingerprint identification technology, the equipment related to fingerprint recognition is applied on increasing electric terminal And function, pass through the security of fingerprint identification technology raising electric terminal.
An important step for carrying out fingerprint recognition is fingerprint register, in the prior art, it is necessary to incite somebody to action when carrying out fingerprint register Finger is pressed into typing fingerprint image on the fingerprint Identification sensor of electric terminal, is referred to according to these fingerprint images of typing Line is registered.There is the registered standard of default fingerprint image inside electric terminal, if the fingerprint image of typing has reached default note Volume standard, then can carry out fingerprint register according to the fingerprint image of typing, and on the contrary then registering fingerprint fails.
However, the difficult crowd of some fingerprint registers in actual life also be present, for example, because finger more dries always, Fingerprint lines is shallower, finger is thinner etc. causes the fingerprint image of typing not meet registered standard always, so as to can not successfully carry out The crowd of fingerprint register.The difficult crowd of these fingerprint registers can not use the fingerprint identification function in electric terminal so that use Family experience is poor.
The content of the invention
The purpose of the embodiment of the present application is to provide a kind of fingerprint register method, apparatus and electric terminal, at least Solves above mentioned problem of the prior art.
To realize the purpose of the embodiment of the present application, the embodiment of the present application provides a kind of fingerprint register method, and it includes：Root According to multiple fingerprint images of typing, multiple registration evaluating datas corresponding to multiple fingerprint images are obtained respectively, wherein, the registration Evaluating data includes at least one of：Fingerprint area in the image quality data of the fingerprint image, the fingerprint image Data；Calculate the amplitude of variation of multiple registration evaluating datas；Judge the amplitude of variation and predetermined amplitude change threshold Relation, fingerprint register is carried out according to judged result.
To realize the purpose of the embodiment of the present application, the embodiment of the present application additionally provides a kind of fingerprint register device, and it includes： Processing unit and fingerprint sensor；Wherein, the fingerprint sensor, for gathering multiple fingerprint images of user's typing；Institute State processing unit and be connected to the fingerprint sensor, multiple fingerprint images collected for obtaining the fingerprint sensor, root According to multiple fingerprint images of typing, multiple registration evaluating datas corresponding to multiple fingerprint images are obtained respectively, are calculated multiple described The amplitude of variation of evaluating data is registered, the relation of the amplitude of variation and predetermined amplitude change threshold is judged, according to judged result Carry out fingerprint register；Wherein, the registration evaluating data includes at least one of：The image quality data of the fingerprint image With the fingerprint area data in the fingerprint image.
To realize the purpose of the embodiment of the present application, the embodiment of the present application provides a kind of electric terminal, and it includes as above institute State fingerprint register device.
The fingerprint register method, apparatus and electric terminal that the present embodiment provides, evaluated by calculating multiple registrations The amplitude of variation of data simultaneously judges the relation of the amplitude of variation and predetermined amplitude change threshold to judge that fingerprint image whether may be used To carry out fingerprint register, directly pass through the direct ratio between the direct comparison between picture quality or fingerprint area with existing Relatively compared to judge whether fingerprint image can carry out fingerprint register so as to carry out fingerprint register fingerprint image judgement more It is objective to add, and improves the success rate that fingerprint register difficulty crowd carries out fingerprint register so that the difficult crowd of fingerprint register can Successful registration fingerprint, a kind of approach of the fingerprint function of normal use electric terminal is provided for such crowd, is substantially increased The usage experience of such crowd.
Brief description of the drawings
Fig. 1 is a kind of flow chart for fingerprint register method that the embodiment of the present application provides；
Fig. 2 is the flow chart for another fingerprint register method that the embodiment of the present application provides；
Fig. 3 is the flow chart for another fingerprint register method that the embodiment of the present application provides；
Fig. 4 is a kind of fingerprint register apparatus structure block diagram that the embodiment of the present application provides；
Fig. 5 is another fingerprint register apparatus structure block diagram that the embodiment of the present application provides.
Embodiment
Presently filed embodiment is described in detail below in conjunction with diagram and embodiment, and thereby how the application is applied Technological means can fully understand and implement according to this to solve technical problem and reach the implementation process of technical effect.
Fig. 1 is a kind of flow chart for fingerprint register method that the embodiment of the present application provides, as shown in figure 1, it includes：
S11, multiple fingerprint images according to typing, multiple registration evaluation numbers corresponding to multiple fingerprint images are obtained respectively According to.
In the present embodiment, multiple fingerprint images of typing are multiple fingerprint images for belonging to the same finger of same user, from And carry out fingerprint register that can be to the finger by multiple fingerprint images of typing.During typing fingerprint image, can pass through by Finger is pressed on fingerprint sensor, and gathers fingerprint image by fingerprint sensor so as to complete the typing of fingerprint image.
Registration evaluating data is whether to can be used for the index parameter of fingerprint register, this reality for evaluating the fingerprint image of typing Apply in example, registration evaluating data includes at least one of：In the image quality data of the fingerprint image, the fingerprint image Fingerprint area data.
Wherein, the image quality data of fingerprint image can be used for characterizing the picture quality of the fingerprint image of typing.For example, The picture quality of fingerprint image can be according to the definition, the intensity profile of fingerprint image, fingerprint image of the fingerprint image of typing The parameter such as characteristic point distribution, determined using any appropriate image quality calculation algorithm.The fingerprint area data of fingerprint image The area of fingerprint in the fingerprint image of typing can be represented.
S12, the amplitude of variation for calculating multiple registration evaluating datas.
, can be according to multiple fingerprint images of typing when registering image quality data of the evaluating data including fingerprint image Corresponding multiple images qualitative data, determine the picture quality amplitude of variation of multiple fingerprint images；When registration evaluating data includes During fingerprint area data in fingerprint image, can according to corresponding to multiple fingerprint images of typing multiple fingerprint area data, Determine the fingerprint area amplitude of variation of multiple fingerprint images.
S13, judge the amplitude of variation and the relation of predetermined amplitude change threshold, fingerprint note is carried out according to judged result Volume.
Wherein, predetermined amplitude change threshold is used to indicate multiple corresponding to multiple fingerprint images in the case of fingerprint successful registration The excursion between evaluating data is registered, if the change width of multiple registration evaluating datas of the fingerprint image of some user's typing Degree meets excursion requirement, then it is assumed that can carry out fingerprint register.Pass through changes in amplitude threshold value rather than some specific number Value point judges whether that fingerprint register can be carried out so that fingerprint register is more objective, particularly with the crowd that fingerprint register is difficult, Such as, finger more carefully causes the fingerprint area in fingerprint image to be unable to reach the area threshold of requirement always, or, because Fingers The shallower picture quality for causing fingerprint image of line lines is unable to reach the quality threshold of requirement always, normally makes to they provide With the feasible way of fingerprint identification function.
Predetermined amplitude change threshold can by those skilled in the art according to actual conditions using it is any it is appropriate by the way of set It is fixed, include but is not limited to：Determined, determined based on appropriate algorithm, determined based on emulation experiment, base based on big data statistics and analysis Determined in artificial experience etc..For example, when being determined based on big data statistics and analysis, there can be the fingerprint of mass efficient with storage Fingerprint image in the database of image is sample, and these fingerprint images are the fingerprint image to succeed in registration, and it is corresponding to obtain it Registration evaluating data.By carrying out machine learning to these registration evaluating datas, to obtain under fingerprint register successful instance, refer to The amplitude of variation of the registration evaluating data of print image, predetermined amplitude change threshold is used as using it.
In the present embodiment, when registering image quality data of the evaluating data including fingerprint image, finger can be calculated The amplitude of variation of the picture quality of print image, so as to amplitude of variation and the default fingerprint image of the picture quality according to fingerprint image Relation between the picture quality changes in amplitude threshold value of picture, determine the amplitude of variation of picture quality of fingerprint image whether in normal In the range of, and then fingerprint image of multiple fingerprint images with the presence or absence of picture quality exception of typing is determined, if multiple fingerprints The abnormal fingerprint image of picture quality is not present in image, then can carry out fingerprint register according to multiple fingerprint images.
When registration evaluating data includes the fingerprint area data in fingerprint image, the finger of fingerprint image can be calculated The amplitude of variation of line area, amplitude of variation and the fingerprint face of default fingerprint image so as to the fingerprint area according to fingerprint image Relation between product changes in amplitude threshold value, determine that the amplitude of variation of fingerprint area of fingerprint image whether in normal range (NR), is entered And fingerprint image of multiple fingerprint images with the presence or absence of fingerprint area exception of typing is determined, if do not deposited in multiple fingerprint images In the fingerprint image that fingerprint area is abnormal, then fingerprint register can be carried out according to multiple fingerprint images.
The fingerprint register method that the present embodiment provides, by calculating the amplitude of variation of multiple registration evaluating datas and sentencing The relation of the amplitude of variation and predetermined amplitude change threshold of breaking judges whether fingerprint image can carry out fingerprint register, and existing Direct comparison between the direct direct comparison or fingerprint area by between picture quality having is to judge fingerprint image The no fingerprint register that can carry out is compared so that the judgement of the fingerprint image to carrying out fingerprint register is more objective, improves fingerprint Register the success rate that difficult crowd carries out fingerprint register so that the difficult crowd of fingerprint register can successful registration fingerprint, be this Class crowd provides a kind of approach of the fingerprint function of normal use electric terminal, and substantially increase such crowd uses body Test.
Fig. 2 is the flow chart for another fingerprint register method that the embodiment of the present application provides, as illustrated, it includes：
S21, multiple fingerprint images according to typing, multiple registration evaluation numbers corresponding to multiple fingerprint images are obtained respectively According to.
Wherein, the registration evaluating data includes at least one of：It is the image quality data of the fingerprint image, described Fingerprint area data in fingerprint image.It should be noted that in actual applications, it is not limited to above two registration evaluation number According to those skilled in the art can also increase other references for whether being capable of successful registration for evaluating fingerprint according to actual conditions Index.
S22, the maximum obtained in multiple registration evaluating datas register evaluating data and minimum registration evaluating data.
In the present embodiment, when the registration evaluating data includes the image quality data of the fingerprint image, acquisition Maximum registers evaluating data and minimum registers highest picture quality and lowest image quality of the evaluating data as multiple fingerprint images； When the registration evaluating data includes the fingerprint area data of the fingerprint image, maximum registration evaluating data and minimum are obtained Evaluating data is registered to obtain the maximum fingerprint area of multiple fingerprint images and minimum fingerprint area.
S23, according to described maximum register evaluating data and minimum registration evaluating data calculates multiple registration evaluation numbers According to amplitude of variation.
Accordingly, can be according to step when the registration evaluating data includes the image quality data of the fingerprint image The highest picture quality and lowest image quality of multiple fingerprint images obtained in rapid S22, calculate the highest picture quality and The difference of lowest image quality, and the difference of highest picture quality and lowest image quality is defined as to the figure of multiple fingerprint images As mass change amplitude.
, can be according in step S22 when the registration evaluating data includes the fingerprint area data of the fingerprint image The maximum fingerprint area and minimum fingerprint area of multiple fingerprint images obtained, calculate the maximum fingerprint area and minimum fingerprint The difference of area, and by the difference of maximum fingerprint area and minimum fingerprint area be defined as multiple fingerprint images fingerprint area become Change amplitude.
It is multiple to calculate by calculating maximum registration evaluating data and the minimum difference for registering evaluating data in the present embodiment The amplitude of variation of evaluating data is registered, realizes that simply cost of implementation is low.But not limited to this, in actual applications, art technology Personnel can also calculate multiple registrations according to maximum registration evaluating data, minimum registration evaluating data using other appropriate ways The amplitude of variation of evaluating data, e.g., calculate standard deviation of multiple registration evaluating datas etc..
S24, judge whether the amplitude of variation exceeds the scope of predetermined amplitude change threshold；If exceeding, step is performed S25；If without departing from execution step S27.
In the present embodiment, the amplitude of variation of the registration evaluating data of multiple fingerprints can be entered with predetermined amplitude change threshold Row compares, if amplitude of variation is more than predetermined amplitude change threshold, can determine that amplitude of variation changes threshold beyond predetermined amplitude The scope of value, if amplitude of variation is less than or equal to predetermined amplitude change threshold, it can determine that amplitude of variation becomes in predetermined amplitude In the range of change threshold value.
In addition, when the registration evaluating data includes the image quality data of the fingerprint image, predetermined amplitude change Threshold value is the picture quality changes in amplitude threshold value of default fingerprint image, then step S24 can specifically include：Compare fingerprint image Image quality data amplitude of variation and default fingerprint image picture quality changes in amplitude threshold value, if the figure of fingerprint image As qualitative data amplitude of variation be more than default fingerprint image picture quality changes in amplitude threshold value, then can determine fingerprint image The amplitude of variation of the image quality data of picture beyond the picture quality changes in amplitude threshold value of default fingerprint image scope, instead The image quality data that can then determine fingerprint image amplitude of variation default fingerprint image picture quality amplitude become In the range of change threshold value.
When the registration evaluating data includes the fingerprint area data in fingerprint image, predetermined amplitude change threshold is pre- If fingerprint image in fingerprint area changes in amplitude threshold value, then step S24 can specifically include：Compare the fingerprint of fingerprint image Area change amplitude and the fingerprint area changes in amplitude threshold value of default fingerprint image, if the fingerprint area change in fingerprint image Amplitude is more than the fingerprint area changes in amplitude threshold value in default fingerprint image, then can determine the fingerprint area in fingerprint image Amplitude of variation beyond the fingerprint area changes in amplitude threshold value in default fingerprint image scope, it is on the contrary then fingerprint can be determined In the range of fingerprint area changes in amplitude threshold value of the fingerprint area amplitude of variation in default fingerprint image in image.
If S25, the amplitude of variation exceed the scope of the predetermined amplitude change threshold, become according to the predetermined amplitude Change the partial fingerprints image in multiple described fingerprint images of threshold value discarding.
Specifically, from the foregoing, predetermined amplitude change threshold is used to indicate multiple fingerprints in the case of fingerprint successful registration Excursion between multiple registration evaluating datas corresponding to image.If the amplitude of variation of evaluating data is registered beyond described default The scope of changes in amplitude threshold value, then in multiple fingerprint images that can determine typing, it may include abnormal cannot be used for being present The fingerprint image of fingerprint register.This parts of images is filtered out, is that the abnormal Fingerprint recognition in this part is come out and lost Abandon, the accuracy of fingerprint register can be effectively ensured, lift fingerprint register efficiency.
Wherein, for the image quality data of fingerprint image, if the amplitude of variation of image quality data exceeds picture quality The scope of the predetermined amplitude change threshold of data, then in multiple fingerprint images that can determine typing, it is poor to there is picture quality Fingerprint image, such as finger get wet after typing fingerprint image.
For the fingerprint area data in the fingerprint image, if the amplitude of variation of fingerprint area data exceeds fingerprint area The scope of the predetermined amplitude change threshold of data, then in multiple fingerprint images that can determine typing, it is smaller to there is fingerprint area Fingerprint image, such as fingerprint area in fingerprint image is only the fingerprint of the area 1/3rd of finger pressing under normal circumstances Image.
When the partial fingerprints image in multiple fingerprint images is filtered out according to predetermined amplitude change threshold, can first it obtain multiple Maximum registration evaluating data in the registration evaluating data；Further according to the maximum registration evaluating data and the predetermined amplitude Change threshold, it is determined that registration evaluating data filters out standard；Finally determine not meeting institute from multiple registration evaluating datas The registration evaluating data for the standard of filtering out is stated, and filters out not meeting and described filters out fingerprint image corresponding to the registration evaluating data of standard Picture, so as to ensure that the amplitude of variation of the registration evaluating data of the fingerprint image after filtering out is in the scope of predetermined amplitude change threshold It is interior, so that in fingerprint image after filtering out, do not include the abnormal fingerprint image that cannot be used for fingerprint register being present.According to described Maximum registration evaluating data and the predetermined amplitude change threshold, it is determined that registration evaluating data filter out standard, can be direct On the basis of the data obtained in above-mentioned steps, it can determine that by simply calculating and filter out scope, realize simple.
Alternatively, can be with when determining not meeting the registration evaluating data for the standard of filtering out from multiple registration evaluating datas Determine to be less than from multiple registration evaluating datas it is described filter out the registration evaluating data of standard, and then filter out and described filter out mark Fingerprint image corresponding to the registration evaluating data of accurate registration evaluating data.Directly filter out less than filtering out the data of standard, can be with Retain to greatest extent in the absence of the abnormal fingerprint image that can be used for fingerprint register so that fingerprint register it is more efficient.
Include the fingerprint in the image quality data of the fingerprint image, the fingerprint image when the registration evaluating data During area data, the standard of filtering out can include image quality criteria, fingerprint area standard, by determining to be less than image quality criteria Image quality data and the fingerprint area data less than fingerprint area standard, can directly determine and filter out picture quality compared with The less fingerprint image of fingerprint area in difference or fingerprint image.
Fingerprint image after S26, basis filter out carries out fingerprint register, terminates this flow.
Specifically, threshold all should be changed in predetermined amplitude by filtering out the amplitude of variation of the remaining fingerprint image after partial fingerprints image In the range of value, at this point it is possible to determine in fingerprint image, do not include the abnormal fingerprint image that cannot be used for fingerprint register being present Picture, the then fingerprint image after filtering out can be used for carrying out fingerprint register.
But after in some cases, filtering out partial fingerprints image, the possible lazy weight of remaining fingerprint image is enough referred to Line is registered.In the case, alternatively, if the fingerprint image after filtering out does not meet fingerprint register standard, new fingerprint is obtained Image is supplemented the fingerprint image after filtering out, and carries out fingerprint note according to the fingerprint image after filtering out and new fingerprint image Volume.That is, if remaining fingerprint image is not enough to carry out fingerprint register, new fingerprint image, new and old fingerprint image are supplemented It is combined together carry out fingerprint register.By supplementing new fingerprint image, on the one hand cause having higher success rate for fingerprint register, imitate Rate is also higher；On the other hand, also finger print information is caused more fully.
In the present embodiment, in a kind of feasible program, prompt message can also be generated according to the fingerprint image after filtering out, To prompt user to press finger and corresponding pressing method for carrying out fingerprint register again, to instruct user more easily to supplement Fingerprint image.
In the application one in the specific implementation, when the region of the fingerprint lacked can be determined according to fingerprint image after filtering out When, the prompt message of generation can include the region of fingerprint pressing during finger pressing, so that will when obtaining new fingerprint image The finger-print region supplement lacked is complete.
In another realization of the application, when the fingerprint image of typing exceedes certain quantity, then it can determine according to finger Print image can complete fingerprint register, at this point it is possible to a default fingerprint image number, then determine of the fingerprint image after filtering out Several relations with default fingerprint image number, if the number of fingerprint image is less than default fingerprint image number, prompt The number of new fingerprint image can be included in information, so as to prompt user's typing fingerprint image again, until fingerprint image Number reaches or beyond preset fingerprint amount of images.
In addition, fingerprint image includes new fingerprint image, these new fingerprint images there may be exception, then in typing , it is necessary to which return to step S21 is re-executed after new fingerprint image, so as to ensure the validity of fingerprint image.
If S27, the amplitude of variation are in the range of the predetermined amplitude change threshold, according to multiple fingerprint images As carrying out fingerprint register.
If the amplitude of variation of the registration evaluating data can determine in the range of the predetermined amplitude change threshold Do not include the abnormal fingerprint image that cannot be used for fingerprint register being present in fingerprint image, fingerprint register can be carried out.
Specifically, for the image quality data of fingerprint image, when picture quality amplitude of variation is in default picture quality When in the range of changes in amplitude threshold value, it may be determined that the relatively low fingerprint image of picture quality is not present in fingerprint image；For referring to Fingerprint area data in print image, when fingerprint area amplitude of variation is in the range of default fingerprint area changes in amplitude threshold value When, it may be determined that the less fingerprint image of fingerprint area is not present in fingerprint image.At this point it is possible to fingerprint is according to multiple fingerprint images As carrying out fingerprint register.
Fig. 3 is the flow chart for another fingerprint register method that the embodiment of the present application provides.As shown in figure 3, it includes：
S31, prompting user start the fingerprint that typing is used for fingerprint register.
In the present embodiment, with it is initial when, exemplified by the number i of fingerprint image is 0.
S32, user press finger.
S33, typing i+1 fingerprint image.
S34, the picture quality Q that i+1 fingerprint image is calculatedi+1And fingerprint area Ai+1。
Wherein, i initial value is 0, opens fingerprint image per typing one and the picture quality Q of fingerprint image is calculatediWith And fingerprint area AiAfterwards, i adds 1, i.e. i=i+1, i is updated to the number of the fingerprint image of current typing.
S35, judge i>=N, that is, judge whether the number i of current fingerprint image is more than or equal to preset fingerprint image number N, if so, then performing step S36, if it is not, then return to step S32 is performed, gather next fingerprint image.
Wherein, N is positive integer more than 1, and concrete numerical value can be suitably set according to being actually needed by those skilled in the art Put, such as N is 8, and the embodiment of the present invention is not restricted to this.
S36, the Q for calculating N fingerprint imagesmax(i.e. picture quality maximum), Qmin(i.e. picture quality minimum value), Amax (i.e. fingerprint area maximum), Amin(i.e. fingerprint area minimum value), Qdelta(i.e. picture quality amplitude of variation) and Adelta(refer to Line area change amplitude).
Wherein, QmaxIt is Qi(that is, Q1……QN) maximum；QminIt is Qi(that is, Q1……QN) minimum value；And Qdelta=Qmax-Qmin；AmaxIt is Ai(that is, A1……AN) maximum；AminIt is Ai(that is, A1……AN) minimum value, and Adelta=Amax-Amin。
S37, judge Qdelta<=Q, that is, judge picture quality amplitude of variation QdeltaWhether default image is less than or equal to Mass change amplitude Q, if Qdelta>Q, then step S38 is performed, if Qdelta<=Q, then perform step S313.
S38, start to filter out operation to N fingerprint images progress picture qualities.It is j that note, which filters out the number that operation is performed, When initial, do not carry out filtering out operation, then j=0.
S39, judge Qj+1<Qmax- Q, that is, judge the picture quality Q of+1 fingerprint image of jthj+1Whether picture quality is less than Filter out standard Qmax- Q, if so, then performing step S310；Otherwise, step S311 is directly performed.
S310 ,+1 fingerprint image of jth is abandoned, and make i=i-1.
From abovementioned steps, after the completion of fingerprint image typing, i=N, in this step, make i=i-1, i.e. discarding refers to After print image, the number of current fingerprint image is subtracted 1.
S311, operation completion is filtered out, filter out the number that operation is performed and add 1, i.e. j=j+1.
S312, judge j>=N, if it is not, then return to step S39 is performed；Step S32 is performed if so, then returning.
When j is more than or equal to N, return to step S32, which is continued executing with, can supplement new fingerprint image.
S313, judge Adelta<=A, that is, judge fingerprint area amplitude of variation AdeltaWhether default fingerprint is less than or equal to Area change amplitude A, if it is not, step S314 is then performed, if so, then performing step S319.
S314, start to filter out operation to N fingerprint images progress image areas.It is j that note, which filters out the number that operation is performed, When initial, do not carry out filtering out operation, then reset j=0.
S315, judge Aj+1<Amax- A, that is, judge the fingerprint area A of+1 fingerprint image of jthj+1Whether picture quality is less than Filter out standard Amax- A, if so, then performing step S316；Otherwise, step S317 is directly performed.
S316 ,+1 fingerprint image of jth is abandoned, and make i=i-1.
From abovementioned steps, after the completion of fingerprint image typing, i=N, in this step, make i=i-1, i.e. discarding refers to After print image, the number of current fingerprint image is subtracted 1.
S317, operation completion is filtered out, filter out the number that operation is performed and add 1, i.e. j=j+1.
S318, judge j>=N, if it is not, then, return to step S315 is performed；Step S32 is performed if so, then returning.
When j is more than or equal to N, return to step S32, which is continued executing with, can supplement new fingerprint image.
S319, registration are completed.
It should be appreciated that in the present embodiment, judge on picture quality amplitude of variation and its associated image quality filters out step The rapid sequencing for filtering out step to the judgement of image area amplitude of variation and its related image area does not have strict difinition, real Can also be configured to first to carry out to carry out fingerprint image quality in the application of border again after fingerprint image area filters out filters out behaviour Make, or carry out simultaneously picture quality filter out operation and fingerprint area filter out operation, the application is not restricted to this.
In the present embodiment, by judge fingerprint image picture quality amplitude of variation whether in default picture quality width Spend change threshold in the range of, and by judge fingerprint image fingerprint area amplitude of variation whether in default fingerprint area In changes in amplitude threshold range, it is ensured that the poor fingerprint register difficulty crowd of picture quality and the less finger of fingerprint area Line registers difficult crowd, can successfully carry out fingerprint register, so make the poor fingerprint register difficulty crowd of picture quality with And the less fingerprint register difficulty crowd of fingerprint area can use fingerprint identification function, improve Consumer's Experience.
Fig. 4 is a kind of fingerprint register apparatus structure block diagram that the embodiment of the present application provides, as shown in figure 4, it includes：Including Processing unit 42 and fingerprint sensor 41.
Wherein,
The fingerprint sensor 41, for gathering multiple fingerprint images of user's typing；
The processing unit 42 is connected to the fingerprint sensor 41, for obtain the fingerprint sensor collect it is more Fingerprint image is opened, according to multiple fingerprint images of typing, obtains multiple registration evaluating datas corresponding to multiple fingerprint images respectively, The amplitude of variation of multiple registration evaluating datas is calculated, judges the relation of the amplitude of variation and predetermined amplitude change threshold, Fingerprint register is carried out according to judged result；Wherein, the registration evaluating data includes at least one of：The fingerprint image Fingerprint area data in image quality data and the fingerprint image.
The fingerprint register device that the present embodiment provides, the change of multiple registration evaluating datas is calculated by processing module Amplitude simultaneously judges the relation of the amplitude of variation and predetermined amplitude change threshold to judge whether fingerprint image can carry out fingerprint Registration, directly judge to refer to by the direct comparison between the direct comparison between picture quality or fingerprint area with existing Whether print image, which can carry out fingerprint register, is compared so that the judgement of the fingerprint image to carrying out fingerprint register is more objective, carries High fingerprint register difficulty crowd carries out the success rate of fingerprint register so that the difficult crowd of fingerprint register can successful registration refer to Line, a kind of approach of the fingerprint function of normal use electric terminal is provided for such crowd, substantially increases such crowd's Usage experience.
Alternatively, as shown in figure 5, the processing unit 42 includes computing module 421, the computing module 421, for obtaining Obtain the maximum registration evaluating datas and minimum registration evaluating data in multiple registration evaluating datas；According to the maximum registration Evaluating data and minimum registration evaluating data calculate the amplitude of variation of multiple registration evaluating datas.
Alternatively, the registration evaluating data includes the image quality data of the fingerprint image, and the computing module 421, for obtaining the highest picture quality and lowest image quality of multiple fingerprint images, calculate the highest picture quality and most The difference of low image quality, and the difference of highest picture quality and lowest image quality is defined as to the image of multiple fingerprint images Mass change amplitude.
Alternatively, the registration evaluating data includes the fingerprint area data of the fingerprint image, and the computing module 421, for the maximum fingerprint area for obtaining multiple fingerprint images and minimum fingerprint area, calculate the maximum fingerprint area and most The difference of small fingerprint area, and the difference of the maximum fingerprint area and minimum fingerprint area is defined as multiple fingerprint images Fingerprint area amplitude of variation.
Alternatively, the image quality data of the registration evaluating data including the fingerprint image and the fingerprint image Fingerprint area data；Also, the computing module 421, for the highest picture quality for obtaining multiple fingerprint images and minimum figure As quality, the difference of the highest picture quality and lowest image quality is calculated, and by the highest picture quality and minimum figure As the difference of quality is defined as the picture quality amplitude of variation of multiple fingerprint images；And obtain the maximum of multiple fingerprint images Fingerprint area and minimum fingerprint area, calculate the difference of the maximum fingerprint area and minimum fingerprint area, and by the maximum The difference of fingerprint area and minimum fingerprint area is defined as the fingerprint area amplitude of variation of multiple fingerprint images.
Alternatively, the processing unit 42 also includes Registering modules 422, the Registering modules 422, in the change Amplitude exceed the predetermined amplitude change threshold scope when according to filtering out the predetermined amplitude change threshold multiple fingerprints Partial fingerprints image in image.
Alternatively, the Registering modules 422, for obtaining the maximum registration evaluation number in multiple registration evaluating datas According to；According to the maximum registration evaluating data and the predetermined amplitude change threshold, it is determined that registration evaluating data filters out standard； Determine not meet from multiple registration evaluating datas it is described filter out the registration evaluating data of standard, and filter out do not meet it is described Filter out fingerprint image corresponding to the registration evaluating data of standard；Fingerprint register is carried out according to the fingerprint image after filtering out.
Alternatively, the processing module 42 also includes：Image complementary module 423, for the fingerprint image after filtering out not Prompt user to carry out fingerprint typing operation again when meeting fingerprint register standard, replace being filtered out to supplement new fingerprint image Fingerprint image；The Registering modules 422, are additionally operable to the fingerprint image after basis filters out and new fingerprint image carries out fingerprint note Volume.
Alternatively, the Registering modules 422, if being additionally operable to model of the amplitude of variation in the predetermined amplitude change threshold In enclosing, then fingerprint register is carried out according to multiple described fingerprint images.
Another embodiment of the application also provides a kind of electric terminal, and it includes fingerprint register device as described above.
The electric terminal that the present embodiment provides, by calculating the amplitude of variation of multiple registration evaluating datas and judging institute The relation of amplitude of variation and predetermined amplitude change threshold is stated to judge whether fingerprint image can carry out fingerprint register, it is and existing Directly judge that fingerprint image whether may be used by the direct comparison between the direct comparison between picture quality or fingerprint area Compared with carrying out fingerprint register so that the judgement of the fingerprint image to carrying out fingerprint register is more objective, improves fingerprint register Difficult crowd carries out the success rate of fingerprint register so that the difficult crowd of fingerprint register can successful registration fingerprint, be such people Group provides a kind of approach of the fingerprint function of normal use electric terminal, substantially increases the usage experience of such crowd.
In addition, those skilled in the art are it should be appreciated that above-mentioned unit and Module Division mode is only numerous strokes One kind in the mode of dividing, if being divided into other units or module or non-divided block, as long as information object has above-mentioned function, All should be within the protection domain of the application.
It will be understood by those skilled in the art that embodiments herein can be provided as method, apparatus (equipment) or computer Program product.Therefore, in terms of the application can use complete hardware embodiment, complete software embodiment or combine software and hardware Embodiment form.Moreover, the application can use the meter for wherein including computer usable program code in one or more The computer journey that calculation machine usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of sequence product.
The application is the flow chart with reference to method, apparatus (equipment) and computer program product according to the embodiment of the present application And/or block diagram describes.It should be understood that can be by each flow in computer program instructions implementation process figure and/or block diagram And/or square frame and the flow in flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided to refer to The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is made to produce One machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for realizing The device for the function of being specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent Select embodiment and fall into having altered and changing for the application scope.Obviously, those skilled in the art can be to the application Various changes and modification are carried out without departing from spirit and scope.So, if these modifications and variations of the application Belong within the scope of the application claim and its equivalent technologies, then the application is also intended to exist comprising these changes and modification It is interior.

Claims (19)

  1. A kind of 1. fingerprint register method, it is characterised in that including：
    According to multiple fingerprint images of typing, multiple registration evaluating datas corresponding to multiple fingerprint images are obtained respectively, wherein, institute Stating registration evaluating data includes at least one of：Finger in the image quality data of the fingerprint image, the fingerprint image Line area data；
    Calculate the amplitude of variation of multiple registration evaluating datas；
    Judge the relation of the amplitude of variation and predetermined amplitude change threshold, fingerprint register is carried out according to judged result.
  2. 2. fingerprint register method according to claim 1, it is characterised in that described to calculate multiple registration evaluating datas Amplitude of variation include：
    Obtain the maximum registration evaluating data in multiple registration evaluating datas and minimum registration evaluating data；
    According to the maximum change registered evaluating data and minimum registration evaluating data and calculate multiple registration evaluating datas Amplitude.
  3. 3. fingerprint register method according to claim 2, it is characterised in that
    The registration evaluating data includes the image quality data of the fingerprint image, and the multiple registration evaluations of the calculating The amplitude of variation of data includes：
    Obtain the highest picture quality and lowest image quality of multiple fingerprint images；
    Calculate the difference of the highest picture quality and lowest image quality, and by the highest picture quality and minimum image matter The difference of amount is defined as the picture quality amplitude of variation of multiple fingerprint images.
  4. 4. fingerprint register method according to claim 2, it is characterised in that
    The registration evaluating data includes the fingerprint area data of the fingerprint image, and the multiple registration evaluations of the calculating The amplitude of variation of data includes：
    Obtain the maximum fingerprint area of multiple fingerprint images and minimum fingerprint area；
    Calculate the difference of the maximum fingerprint area and minimum fingerprint area, and by the maximum fingerprint area and minimum fingerprint face Long-pending difference is defined as the fingerprint area amplitude of variation of multiple fingerprint images.
  5. 5. fingerprint register method according to claim 2, it is characterised in that the registration evaluating data includes the fingerprint Fingerprint area data of the image quality data of image and the fingerprint image and described, and described calculate multiple registrations and comment The amplitude of variation of valence mumber evidence includes：
    The highest picture quality and lowest image quality of multiple fingerprint images are obtained, calculates the highest picture quality and minimum figure As the difference of quality, and the difference of the highest picture quality and lowest image quality is defined as to the image of multiple fingerprint images Mass change amplitude；
    The maximum fingerprint area of multiple fingerprint images and minimum fingerprint area are obtained, calculates the maximum fingerprint area and most little finger of toe The difference of line area, and the difference of the maximum fingerprint area and minimum fingerprint area is defined as to the fingerprint of multiple fingerprint images Area change amplitude.
  6. 6. according to the fingerprint register method described in claim any one of 1-5, it is characterised in that described to judge the amplitude of variation With the relation of predetermined amplitude change threshold, carrying out fingerprint register according to judged result includes：
    If the amplitude of variation exceeds the scope of the predetermined amplitude change threshold, filtered according to the predetermined amplitude change threshold Except the partial fingerprints image in multiple described fingerprint images；
    After the partial fingerprints image is filtered out, user is prompted to carry out fingerprint typing operation again, to supplement new fingerprint image As replacing the fingerprint image being filtered out.
  7. 7. fingerprint register method according to claim 6, it is characterised in that described according to the predetermined amplitude change threshold The partial fingerprints image filtered out in multiple described fingerprint images includes：
    Obtain the maximum registration evaluating data in multiple registration evaluating datas；
    According to the maximum registration evaluating data and the predetermined amplitude change threshold, it is determined that registration evaluating data filters out mark It is accurate；
    Determine not meet from multiple registration evaluating datas it is described filter out the registration evaluating data of standard, and filter out and do not meet Fingerprint image corresponding to the registration evaluating data for filtering out standard.
  8. 8. fingerprint register method according to claim 6, it is characterised in that methods described also includes：
    Fingerprint register is carried out according to the fingerprint image after filtering out and new fingerprint image.
  9. 9. according to the fingerprint register method described in claim any one of 1-5, it is characterised in that described to judge the amplitude of variation With the relation of predetermined amplitude change threshold, carrying out fingerprint register according to judged result includes：
    If the amplitude of variation in the range of the predetermined amplitude change threshold, is referred to according to multiple described fingerprint images Line is registered.
  10. A kind of 10. fingerprint register device, it is characterised in that including：Processing unit and fingerprint sensor；
    Wherein,
    The fingerprint sensor, for gathering multiple fingerprint images of user's typing；
    The processing unit is connected to the fingerprint sensor, multiple fingerprint images collected for obtaining the fingerprint sensor Picture, according to multiple fingerprint images of typing, multiple registration evaluating datas corresponding to multiple fingerprint images are obtained respectively,
    The amplitude of variation of multiple registration evaluating datas is calculated, judges the pass of the amplitude of variation and predetermined amplitude change threshold System, fingerprint register is carried out according to judged result；Wherein, the registration evaluating data includes at least one of：The fingerprint image Fingerprint area data in the image quality data of picture and the fingerprint image.
  11. 11. fingerprint register device according to claim 10, it is characterised in that the processing unit includes computing module, The computing module is used for：
    Obtain the maximum registration evaluating data in multiple registration evaluating datas and minimum registration evaluating data；According to it is described most Big registration evaluating data and minimum registration evaluating data calculate the amplitude of variation of multiple registration evaluating datas.
  12. 12. fingerprint register device according to claim 11, it is characterised in that
    The registration evaluating data includes the image quality data of the fingerprint image, and the computing module, more for obtaining The highest picture quality and lowest image quality of fingerprint image are opened, calculates the difference of the highest picture quality and lowest image quality It is worth, and the difference of the highest picture quality and lowest image quality is defined as to the picture quality change width of multiple fingerprint images Degree.
  13. 13. fingerprint register device according to claim 11, it is characterised in that
    The registration evaluating data includes the fingerprint area data of the fingerprint image, and the computing module, more for obtaining The maximum fingerprint area of fingerprint image and minimum fingerprint area are opened, calculates the difference of the maximum fingerprint area and minimum fingerprint area It is worth, and the difference of the maximum fingerprint area and minimum fingerprint area is defined as to the fingerprint area change width of multiple fingerprint images Degree.
  14. 14. fingerprint register device according to claim 11, it is characterised in that
    The registration evaluating data includes the image quality data of the fingerprint image and the fingerprint area number of the fingerprint image According to；
    Also, the computing module, for obtaining the highest picture quality and lowest image quality of multiple fingerprint images, calculate institute The difference of highest picture quality and lowest image quality is stated, and the difference of the highest picture quality and lowest image quality is true It is set to the picture quality amplitude of variation of multiple fingerprint images；And obtain the maximum fingerprint area and minimum of multiple fingerprint images Fingerprint area, calculates the difference of the maximum fingerprint area and minimum fingerprint area, and by the maximum fingerprint area and minimum The difference of fingerprint area is defined as the fingerprint area amplitude of variation of multiple fingerprint images.
  15. 15. according to the fingerprint register device described in claim any one of 10-14, it is characterised in that the processing unit also wraps Registering modules are included, the Registering modules are used for：
    Filtered when the amplitude of variation exceeds the scope of the predetermined amplitude change threshold according to the predetermined amplitude change threshold Except the partial fingerprints image in multiple described fingerprint images.
  16. 16. fingerprint register device according to claim 15, it is characterised in that the Registering modules, be used for：
    Obtain the maximum registration evaluating data in multiple registration evaluating datas；According to the maximum registration evaluating data and institute Predetermined amplitude change threshold is stated, it is determined that registration evaluating data filters out standard；Determined not from multiple registration evaluating datas The registration evaluating data of standard is filtered out described in meeting, and filters out not meeting and refers to corresponding to the registration evaluating data for filtering out standard Print image；Fingerprint register is carried out according to the fingerprint image after filtering out.
  17. 17. fingerprint register device according to claim 15, it is characterised in that the processing module also includes：
    Image complementary module, for prompting user to be referred to again when the fingerprint image after filtering out does not meet fingerprint register standard Line typing is operated, and the fingerprint image being filtered out is replaced to supplement new fingerprint image；
    The Registering modules, are additionally operable to the fingerprint image after basis filters out and new fingerprint image carries out fingerprint register.
  18. 18. according to the fingerprint register device described in claim any one of 10-14, it is characterised in that the Registering modules, also use In：
    If the amplitude of variation in the range of the predetermined amplitude change threshold, is referred to according to multiple described fingerprint images Line is registered.
  19. 19. a kind of electric terminal, it is characterised in that including the fingerprint register device as described in claim any one of 10-18.
CN201780000990.0A 2017-09-04 2017-09-04 Fingerprint register method, apparatus and electric terminal Pending CN107690655A (en)

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