CN105975835B - A kind of unlocked by fingerprint control method and terminal device - Google Patents
A kind of unlocked by fingerprint control method and terminal device Download PDFInfo
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- CN105975835B CN105975835B CN201610369461.5A CN201610369461A CN105975835B CN 105975835 B CN105975835 B CN 105975835B CN 201610369461 A CN201610369461 A CN 201610369461A CN 105975835 B CN105975835 B CN 105975835B
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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
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
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Abstract
The embodiment of the invention discloses a kind of unlocked by fingerprint control method and terminal device, the realization of wherein method includes：Original fingerprint image is obtained, and is determined and the registered fingerprint corresponding to the original fingerprint image；Determine the validity feature point of the original fingerprint image, determine whether the validity feature point meets prerequisite, the prerequisite be for determine the original fingerprint image whether the condition that can be correctly validated；If meeting the prerequisite determines that the original fingerprint image can be identified, it is compared using the original fingerprint image and the registered fingerprint；If being unsatisfactory for the prerequisite determines that the original fingerprint image can not be identified, feature enhanced processing is carried out to the original fingerprint image first and obtains fingerprint analogue data, is then compared using the fingerprint analogue data and the registered fingerprint.The processing procedures such as feature amplification can be reduced, so as to save the time of unlocked by fingerprint, unlocked by fingerprint efficiency are improved.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of unlocked by fingerprint control method and terminal device.
Background technology
Fingerprint image is the data using image format as the fingerprint of carrier.Fingerprint is by recessed in the finger pulp of human finger end
The lines that convex skin is formed.Fingerprint can make hand increase frictional force in contact subject, so as to be easier to have an effect and promptly thing
Part.It is self-assembling formation in human evolution's process type.Fingerprint is to be formed in the finger pulp of human finger end by concavo-convex skin
Lines, because the fingerprint of people is that nature-nurture is coefficient, it is also closely related with health, thus fingerprint everybody
All have, it is different, because fingerprint repetitive rate is minimum, about 1/15000000000th, therefore it is referred to as " human body identity card ".Exactly
This feature based on fingerprint, fingerprint is widely used as the information of authentication.
For example, fingerprint identification technology has become the standard configuration of main flow mobile terminal manufacturer flagship type.Fingerprint recognition is not only
It can be used for the functions such as the unblock and wake-up of mobile terminal, be also the important ring of mobile payment.Fingerprint pays and is meeting user
While property easy to use, to security it is also proposed that higher requirement.
The process of fingerprint recognition is divided into：Extract feature, preserve data and images match.
The original fingerprint image of somatic fingerprint is read by fingerprint reading systems；The original fingerprint obtained due to fingerprint collecting
Image may very unintelligible characteristic point it is unobvious, therefore the original fingerprint image that collects can be carried out before fingerprint matching
Feature enhanced processing becomes apparent characteristic point, so as to improve fingerprint recognition success rate；Then the fingerprint after being amplified using feature
Image and the registered fingerprint template pre-saved carry out Feature Points Matching, are unlocked after the match is successful.Equipment is from reading
Fingerprint image is referred to as unlocked time to the successfully required time is unlocked.
The speed of unlocked time directly influences the efficiency that user uses equipment, more sensitive etc. especially for some
Treat that the time is more such.How to shorten unlocked time turns into the important directions that technical staff studies from unlocked by fingerprint efficiency is improved.
The content of the invention
The embodiments of the invention provide a kind of unlocked by fingerprint control method and terminal device, for improving unlocked by fingerprint effect
Rate.
On the one hand the embodiments of the invention provide a kind of unlocked by fingerprint control method, including：
Original fingerprint image is obtained, and is determined and the registered fingerprint corresponding to the original fingerprint image；
The validity feature point of the original fingerprint image is determined, determines whether the validity feature point meets prerequisite,
The prerequisite be for determine the original fingerprint image whether the condition that can be correctly validated；
If meeting the prerequisite determines that the original fingerprint image can be identified, the original fingerprint figure is used
As being compared with the registered fingerprint；
If being unsatisfactory for the prerequisite determines that the original fingerprint image can not be identified, first to described original
Fingerprint image carries out feature enhanced processing and obtains fingerprint analogue data, is then referred to using the fingerprint analogue data with the registration
Line is compared.
In an optional implementation, the acquisition original fingerprint image includes：
Original fingerprint image is obtained by the fingerprint collecting equipment of terminal device；Methods described also includes：
The finger humidity for inputting the original fingerprint image is obtained by humidity sensor；
Determine that the validity feature point is unsatisfactory for if the finger humidity is more than first threshold or less than Second Threshold
The prerequisite simultaneously determines that the original fingerprint image can not be identified, then first to the original fingerprint figure described in execution
Fingerprint analogue data is obtained as carrying out feature enhanced processing, is then carried out using the fingerprint analogue data with the registered fingerprint
Compare.
It is described that fingerprint is obtained to original fingerprint image progress feature enhanced processing in an optional implementation
Analogue data, including：
Obtain the pixel value of each pixel in the original fingerprint image；
According to the pixel value of the pixel value of target pixel points, and the pixel adjacent with the target pixel points, calculate
The grey decision-making of the target pixel points；The pixel that the target pixel points belong in the original fingerprint image；
Obtain in the original fingerprint image after the grey decision-making of each pixel, determining the original fingerprint image calculating
The series of grey decision-making；
The series of the grey decision-making of the original fingerprint image is improved, the original fingerprint image is converted into fingerprint simulation number
According to.
In an optional implementation, the pixel value bag for obtaining each pixel in the original fingerprint image
Include：
Fingerprint collecting equipment gathers the capacitance of each pixel in the fingerprint image that the original fingerprint image is obtained, or electric capacity
The weighted value of value.
In an optional implementation, the pixel value according to target pixel points, and with the object pixel
The pixel value of the adjacent pixel of point, calculating the grey decision-making of the target pixel points includes：
Determine central point pixel value in the default size contiguous range of the target pixel points, max pixel value and most
Small pixel value；
The grey decision-making for calculating the target pixel points is：A* (central point pixel value-minimum pixel value)/(maximum pixel
Value-minimum pixel value), wherein 200≤A≤255.
In an optional implementation, the pixel adjacent with the target pixel points includes：
The n*n pixel put centered on the target pixel points, the n is the odd number more than 1.
The aspect of the embodiment of the present invention two provides a kind of unlocked by fingerprint control device, including：
Fingerprint acquiring unit, for obtaining original fingerprint image；
Fingerprint determining unit, for determining and the registered fingerprint corresponding to the original fingerprint image；
Determining unit is recognized, the validity feature point for determining the original fingerprint image determines the validity feature point
Whether meet prerequisite, the prerequisite be for determine the original fingerprint image whether the bar that can be correctly validated
Part；
Fingerprint processing unit, fingerprint analogue data is obtained for carrying out feature enhanced processing to the original fingerprint image；
Fingerprint comparison unit, if determining that meeting the prerequisite determines the original finger for the identification determining unit
Print image can be identified, then be compared using the original fingerprint image and the registered fingerprint；If the identification is determined
Unit determines that being unsatisfactory for the prerequisite determines that the original fingerprint image can not be identified, then is simulated using the fingerprint
Data are compared with the registered fingerprint.
In an optional implementation, the fingerprint acquiring unit, for being set by the fingerprint collecting of terminal device
It is standby to obtain original fingerprint image；
The equipment also includes：
Humidity sensor, the finger humidity for obtaining the input original fingerprint image；
The fingerprint comparison unit, if for the humidity sensor obtain the finger humidity be more than first threshold or
Person then determines that the validity feature point is unsatisfactory for the prerequisite and determines the original fingerprint image not less than Second Threshold
It can be identified, then perform the use fingerprint analogue data and be compared with the registered fingerprint.
In an optional implementation, the fingerprint processing unit, including：
Pixel value acquiring unit, the pixel value for obtaining each pixel in the original fingerprint image；
Grey decision-making computing unit is and adjacent with the target pixel points for the pixel value according to target pixel points
The pixel value of pixel, calculates the grey decision-making of the target pixel points；The target pixel points belong to the original fingerprint image
In pixel；
Series determining unit, for being obtained in calculating in the original fingerprint image after the grey decision-making of each pixel, it is determined that
The series of the grey decision-making of the original fingerprint image；
Image conversion unit, the series of the grey decision-making for improving the original fingerprint image, by the original fingerprint figure
As being converted to fingerprint analogue data.
In an optional implementation, the pixel value acquiring unit is adopted specifically for obtaining fingerprint collecting equipment
Collect the capacitance of each pixel in the fingerprint image that the original fingerprint image is obtained, or capacitance weighted value.
In an optional implementation, the grey decision-making computing unit, specifically for determining the target pixel points
Default size contiguous range in central point pixel value, max pixel value and minimum pixel value；
The grey decision-making for calculating the target pixel points is：A* (central point pixel value-minimum pixel value)/(maximum pixel
Value-minimum pixel value), wherein 200≤A≤255.
In an optional implementation, the pixel adjacent with the target pixel points includes：
The n*n pixel put centered on the target pixel points, the n is the odd number more than 1.
The three aspect embodiment of the present invention additionally provide a kind of terminal device, including：Processor and memory, wherein the place
Managing device, the embodiments of the invention provide the method described in any one for performing.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：Pass through having for original fingerprint image
Effect characteristic point primarily determines that can original fingerprint image be identified, so as to select the unlocked by fingerprint mode being more suitable for；Its
In, the mode compared after first feature amplification has been preferably used in the case of the characteristic point in original fingerprint image is less or unconspicuous
Ensure unblock success rate；In the case where the characteristic point of original fingerprint image can be substantially identified, it is possible to reduce feature is amplified
Etc. processing procedure, so as to save the time of unlocked by fingerprint, unlocked by fingerprint efficiency is improved.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is present invention method schematic flow sheet；
Fig. 2 is fingerprint chip structure schematic diagram of the embodiment of the present invention；
Fig. 3 is 32 grades of GTG schematic diagrames of the embodiment of the present invention；
Fig. 4 is 256 grades of GTG schematic diagrames of the embodiment of the present invention；
Fig. 5 is fingerprint image schematic diagram of the embodiment of the present invention；
Fig. 6 is present invention method schematic flow sheet；
Fig. 7 is fingerprint image schematic diagram of the embodiment of the present invention；
Fig. 8 A are unlocked by fingerprint control device structural representation of the embodiment of the present invention；
Fig. 8 B are unlocked by fingerprint control device structural representation of the embodiment of the present invention；
Fig. 9 is unlocked by fingerprint control device structural representation of the embodiment of the present invention；
Figure 10 is terminal device structural representation of the embodiment of the present invention；
Figure 11 is terminal device structural representation of the embodiment of the present invention.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step it is described in detail, it is clear that described embodiment is only embodiment of the invention a part of, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
The embodiments of the invention provide a kind of unlocked by fingerprint control method, as shown in figure 1, including：
101：Original fingerprint image is obtained, and is determined and the registered fingerprint corresponding to above-mentioned original fingerprint image；
In the present embodiment, original fingerprint image is the fingerprint image for subsequent fingerprint analogue data, can be with
It is the fingerprint image that other equipment is sent or the fingerprint image that local device collection is obtained；Registered fingerprint is storage
It is typically to be preset by user, corresponding to behaviour local for used fingerprint to be compared to user's input fingerprint
Make the certification of authority.
102：The validity feature point of above-mentioned original fingerprint image is determined, determines whether above-mentioned validity feature point meets preset bar
Part, above-mentioned prerequisite be for determine above-mentioned original fingerprint image whether the condition that can be correctly validated；
Validity feature point is the obvious characteristic point of those features in fingerprint image, can using single feature point as judge according to
According to individually judging whether each characteristic point is obvious, it is then determined that whether the characteristic point of whole fingerprint image is obvious；Can also be
Directly judged by foundation of the validity feature point of overall original fingerprint image, for example：When finger humidity is too high, original finger
Print image can be rendered as the small overall feature of peak valley difference；When finger humidity is too low, original fingerprint image can be presented fingerprint and not connect
It is continuous, the characteristics of peak valley of characteristic point disconnects more.Preset condition then can respective settings accordingly.Due to judging original fingerprint figure
Seem the no mode that can be identified, there are different algorithms available based on different characteristic point judgment modes, the present invention is real
Exhaustion can not be carried out to it by applying example, therefore the embodiment of the present invention does not make uniqueness restriction to this.
103：If meeting above-mentioned prerequisite determines that above-mentioned original fingerprint image can be identified, above-mentioned original finger is used
Print image is compared with above-mentioned registered fingerprint；
104：If being unsatisfactory for above-mentioned prerequisite determines that above-mentioned original fingerprint image can not be identified, first to above-mentioned
Original fingerprint image carries out feature enhanced processing and obtains fingerprint analogue data, then using above-mentioned fingerprint analogue data and above-mentioned note
Volume fingerprint is compared.
In the present embodiment, primarily determine that can original fingerprint image be known by the validity feature point of original fingerprint image
Do not come out, so as to select the unlocked by fingerprint mode being more suitable for；Wherein, the characteristic point in original fingerprint image is less or unobvious
In the case of preferably used the mode compared after the amplification of first feature and ensure to unlock success rate；In the characteristic point of original fingerprint image
In the case of being substantially identified, it is possible to reduce the processing procedure such as feature amplification, so as to save the time of unlocked by fingerprint, improve
Unlocked by fingerprint efficiency.
Can the embodiment of the present invention gives one can by as the determination original fingerprint image of preferred implementation scheme
Identification and the implementation of alignment schemes selection, it is specific as follows：Above-mentioned acquisition original fingerprint image includes：
Original fingerprint image is obtained by the fingerprint collecting equipment of terminal device；The above method also includes：
The finger humidity for inputting above-mentioned original fingerprint image is obtained by humidity sensor；
Determine that above-mentioned validity feature point is unsatisfactory for if above-mentioned finger humidity is more than first threshold or less than Second Threshold
Above-mentioned prerequisite simultaneously determines that above-mentioned original fingerprint image can not be identified, then performs above-mentioned first to above-mentioned original fingerprint figure
Fingerprint analogue data is obtained as carrying out feature enhanced processing, is then carried out using above-mentioned fingerprint analogue data with above-mentioned registered fingerprint
Compare.
In the present embodiment, terminal device has fingerprint collecting equipment and humidity sensor, it is to be appreciated that first
Threshold value is that, for determining the overly wet critical value that may result in original fingerprint image None- identified of finger, Second Threshold is then used for
Determine the too dry critical value that may result in original fingerprint image None- identified of finger；Therefore, first threshold can be much larger than second
Threshold value；If finger humidity is between first threshold and Second Threshold, two kinds of alignments can be arbitrarily selected, in addition can also
The other modes recorded by previous embodiment predict original fingerprint figure to determine whether characteristic point meets other prerequisites
Seem that no can be identified.The citing of the present embodiment can be integrated with the prerequisite in previous embodiment and used, and
Prerequisite is not unique in previous embodiment, and the citing of the present embodiment should not be construed as the uniqueness limit to the embodiment of the present invention
It is fixed.
Feature amplification in the embodiment of the present invention can comprising making fingerprint image become relatively sharp, feature become apparent with
And fingerprint image is subjected to all image processing algorithms that repairing obtains closer real fingerprint image, this gives
One of them preferred citing, it is specific as follows：It is above-mentioned that fingerprint mould is obtained to above-mentioned original fingerprint image progress feature enhanced processing
Intend data, including：
Obtain the pixel value of each pixel in above-mentioned original fingerprint image；
According to the pixel value of the pixel value of target pixel points, and the pixel adjacent with above-mentioned target pixel points, calculate
The grey decision-making of above-mentioned target pixel points；The pixel that above-mentioned target pixel points belong in above-mentioned original fingerprint image；
Obtain in above-mentioned original fingerprint image after the grey decision-making of each pixel, determining above-mentioned original fingerprint image calculating
The series of grey decision-making；
The series of the grey decision-making of above-mentioned original fingerprint image is improved, above-mentioned original fingerprint image is converted into fingerprint simulation number
According to.
Pixel point value, is the parameter for being used in fingerprint image measure each pixel in fingerprint image, with capacitive fingerprint
Exemplified by collecting device, the pixel value can be the capacitance after capacitance or weighting.Different fingerprint image acquisition skills
Art can not make uniqueness restriction to that should have different pixel values to this embodiment of the present invention.
Grey decision-making be pixel it is most dark it is black to most it is bright it is white between brightness hierarchical relationship；In Windows
In, usually 256 rank, digit is 8, a value per single order in correspondence 0~255, referred to as grey decision-making.
Gray scale is had differences between the black of the different saturation on the basis of black, gray scale, by 100% black with
Saturation degree between 0% black (white) is divided into multiple levels, then each species saturation can correspond to one of level, is
Grey decision-making；The quantity of all different grey decision-makings being related to of one image is the series of grey decision-making.At present in computer technology
Field uses binary system, and grey decision-making is represented with digit, it is assumed that digit is m, then the m power GTGs that can have 2 are expressed.Example
Such as：8 can represent 256 grey decision-makings.Understood based on described above：The series of grey decision-making can be set, however it is not limited to
One fixed value.
The embodiment of the present invention, by the processing of the pixel value to original fingerprint image, obtains the grey decision-making of each pixel value,
And the series of the grey decision-making of the original fingerprint image has been determined therefrom that, the series of the grey decision-making by improving the original fingerprint image
Fingerprint analogue data is obtained, can make fingerprint analogue data relative to original fingerprint image closer to real fingerprint image
Picture, and make the feature of fingerprint analogue data more prominent, so that be conducive to improving the discrimination of fingerprint image, and it is further favourable
In the raising of unblock rate and authentication efficiency.
Alternatively, the pixel value of each pixel includes in the above-mentioned original fingerprint image of above-mentioned acquisition：
Fingerprint collecting equipment gathers the capacitance of each pixel in the fingerprint image that above-mentioned original fingerprint image is obtained, or electric capacity
The weighted value of value.
It is understood that different fingerprint image acquisition technologies can be to that should have different pixel values, therefore with electric capacity
Value, or the pixel value exemplified by the weighted value of capacitance, should not be construed as the uniqueness restriction to the embodiment of the present invention.
Alternatively, the present embodiment additionally provides the circular of grey decision-making, specific as follows：Above-mentioned foundation object pixel
The pixel value of point, and the pixel adjacent with above-mentioned target pixel points pixel value, calculate the GTG of above-mentioned target pixel points
Value includes：
Determine central point pixel value in the default size contiguous range of above-mentioned target pixel points, max pixel value and most
Small pixel value；
The grey decision-making for calculating above-mentioned target pixel points is：A* (central point pixel value-minimum pixel value)/(maximum pixel
Value-minimum pixel value), wherein 200≤A≤255.
In above-mentioned target pixel points and the pixel adjacent with above-mentioned target pixel points, positioned at the pixel of central point
Pixel value be central point pixel value, the maximum corresponding pixel value of pixel of pixel value is max pixel value, and pixel value is minimum
The corresponding pixel value of pixel be minimum pixel value.Pixel can be taken into full account by the calculation of the embodiment of the present invention
With the difference between surrounding pixel point, so that it is determined that a relatively reasonable grey decision-making.
Alternatively, the above-mentioned pixel adjacent with above-mentioned target pixel points includes：
The n*n pixel put centered on above-mentioned target pixel points, above-mentioned n is the odd number more than 1.
In the present embodiment, n values are the odd number more than 1, and target pixel points can so be located at and participates in grey decision-making meter
The center of calculation, is conducive to the accurate grey decision-making for determining target pixel points；The common values of wherein n can be 3 or 5, also may be used
To be other values；Less n can improve computational efficiency, and larger n can make fingerprint image more balanced, both balances,
5 or 7 can be used as compared with the figure of merit.
In embodiments of the present invention, the principle that fingerprint image is obtained is fingerprint chip internal pixel as m*n array
Point (pixel) is constituted, as shown in Fig. 2 region shown in dotted line frame is fingerprint chip, the array in Fig. 2 has 56*192, and one has
During 10752 pixel points, fingerprint collecting, 10752 pixel values can be collected, corresponding each pixel values can be with
Showed by the form of image；
When finger down fingerprint module surface, each pixel points are with forming capacitance, electric capacity between finger surface
Value can according to the peak valley difference of fingerprint without same, because it is near with pixel points distance to refer to summit, and refer to paddy can be a little further.Fingerprint mould
Group can form a rough three-dimensional surface according to the capacitance size of 10752 pixels, be simulated by this three-dimensional surface
Fingerprint image.
Because the finger peak of finger and finger paddy direct range difference are too small, the peak-to-peak value of pixel values is flat relative to pixel
Average is too small, typically less than 5% change, so the picture quality obtained is excessively poor, a piece of pitch-black, black and white cannot be distinguished by,
The matching performance of fingerprint is well imagined below.
User presses overweight or kicks the beam and can cause fogging image when unlocked by fingerprint, and unblock mortality is carried
Rise, also user occurs weighing the situation while light when strip fingerprint module is pressed, easily, causes image uniform
Property it is poor, a black edge margin, is not easy to the identification of fingerprint characteristic on one side.
In order to solve the above technical problems, the embodiment of the present invention will be entered to original fingerprint image (i.e. original fingerprint image)
Row GTG quantification treatment, before GTG quantification treatment is introduced, first introduces influence of the GTG to fingerprint image.
GTG refer to it is most dark it is black to most it is bright it is white between brightness hierarchical relationship.Comparison of light and shade and black-white colors transition side
The performance in face, image is more clear, and it is then better to get over nature excessively.Illustrate.On GTG, using 32 grades of GTGs and 256 grades
The performance of GTG is contrasted.As shown in figure 3, in 32 grades of GTGs, almost all can distinguish it is not at the same level between color it is deep
Shallow difference, entire image uniformity is more preferably.
As shown in figure 4, being 256 grades of GTGs, in 256 grades of GTGs, color restoration capability has more obvious raising, upper left
Angle, which only has a small number of GTGs, clearly to differentiate, and the excessive scope of color-grading is wider, and contrast is more preferably.In addition, GTG is difficult to point
Distinguish that a portion reason is recognition capability of the human eye to color, will not be suffered from this for equipment.
The fingerprint chip of fingerprint collecting equipment is generally divided into two kinds, and one is that polarization is square, such as 6*6 areas, Yi Zhongshi
Inclined rectangle, such as 4*10 areas, in whole fingerprint module design, square chip package into module be often square
And circle, and rectangle fingerprint chip will be packaged into rectangle.Be illustrated in fig. 5 shown below is exactly user in strip fingerprint chip
The one side occurred during pressing is gently while weight (left side is light, right side weight), caused fingerprint image is uneven, in circular and square finger
Line module, also occurs same similar uneven phenomenon.Unblock mortality can be caused to improve.
Present invention method flow is illustrated, as shown in fig. 6, it is specific as follows, including：
601：Each pixel points take 3*3 pixel points formation neighborhood around；
In the present embodiment, 3*3 is only citing, other neighborhoods such as 5*5 or 7*7.
602：Enter line number Neo-Confucianism statistics to the pixel points in this neighborhood；
603：If the pixel data of 9 points, maximum (max) value, minimum (min) value and centerpoint value are counted；
604：Calculate grey decision-making=255* (centerpoint value-min)/(max-min) of the centre of neighbourhood point；
It is understood that grey decision-making should be integer herein, there is decimal so to need to take it if calculating obtained value
Turn over is changed to grey decision-making.
605：Test out the grey decision-making of all pixel points；
606：Series quantization is carried out to grey decision-making, from harmonic series to premium volume, such as is originally that 6 are quantified as 8
GTG, the definition of image more preferably, is more nearly actual fingerprint, improves fingerprint correctly unblock rate.
In the present embodiment, specifically from harmonic series to the mode of premium volume can be improve be used for represent pixel
The digit of pixel value, then participates in calculating grey decision-making using the pixel value improved after digit；The calculation of other above-mentioned calculating grey decision-making
255 value can be determined according to the maximum series of the grey decision-making of setting in formula.
As shown in fig. 7, being the fingerprint image treated through scheme of the embodiment of the present invention, whole fingerprint image is more uniform,
The situation that weight differs no longer is shown as, fingerprint characteristic becomes apparent.
The embodiment of the present invention additionally provides a kind of unlocked by fingerprint control device, as shown in Figure 8 A, including：
Fingerprint acquiring unit 801, for obtaining original fingerprint image；
Fingerprint determining unit 802, for determining and the registered fingerprint corresponding to above-mentioned original fingerprint image；
Determining unit 803 is recognized, the validity feature point for determining above-mentioned original fingerprint image determines above-mentioned validity feature
Whether point meets prerequisite, and above-mentioned prerequisite is for determining whether above-mentioned original fingerprint image can be correctly validated
Condition；
Fingerprint processing unit 804, fingerprint simulation number is obtained for carrying out feature enhanced processing to above-mentioned original fingerprint image
According to；
Fingerprint comparison unit 805, if for above-mentioned identification determining unit 803 determine meet above-mentioned prerequisite determine it is above-mentioned
Original fingerprint image can be identified, then be compared using above-mentioned original fingerprint image and above-mentioned registered fingerprint；If above-mentioned knowledge
Other determining unit 803 determines that being unsatisfactory for above-mentioned prerequisite determines that above-mentioned original fingerprint image can not be identified, then using upper
Fingerprint analogue data is stated to be compared with above-mentioned registered fingerprint.
In the present embodiment, original fingerprint image is the fingerprint image for subsequent fingerprint analogue data, can be with
It is the fingerprint image that other equipment is sent or the fingerprint image that local device collection is obtained；Registered fingerprint is storage
It is typically to be preset by user, corresponding to behaviour local for used fingerprint to be compared to user's input fingerprint
Make the certification of authority.
Validity feature point is the obvious characteristic point of those features in fingerprint image, can using single feature point as judge according to
According to individually judging whether each characteristic point is obvious, it is then determined that whether the characteristic point of whole fingerprint image is obvious；Can also be
Directly judged by foundation of the validity feature point of overall original fingerprint image, for example：When finger humidity is too high, original finger
Print image can be rendered as the small overall feature of peak valley difference；When finger humidity is too low, original fingerprint image can be presented fingerprint and not connect
It is continuous, the characteristics of peak valley of characteristic point disconnects more.Preset condition then can respective settings accordingly.Due to judging original fingerprint figure
Seem the no mode that can be identified, there are different algorithms available based on different characteristic point judgment modes, the present invention is real
Exhaustion can not be carried out to it by applying example, therefore the embodiment of the present invention does not make uniqueness restriction to this.
In the present embodiment, primarily determine that can original fingerprint image be known by the validity feature point of original fingerprint image
Do not come out, so as to select the unlocked by fingerprint mode being more suitable for；Wherein, the characteristic point in original fingerprint image is less or unobvious
In the case of preferably used the mode compared after the amplification of first feature and ensure to unlock success rate；In the characteristic point of original fingerprint image
In the case of being substantially identified, it is possible to reduce the processing procedure such as feature amplification, so as to save the time of unlocked by fingerprint, improve
Unlocked by fingerprint efficiency.
Can the embodiment of the present invention gives one can by as the determination original fingerprint image of preferred implementation scheme
Identification and the implementation of alignment schemes selection, it is specific as follows：Alternatively, as shown in Figure 8 B, above-mentioned fingerprint acquiring unit
801, for obtaining original fingerprint image by the fingerprint collecting equipment of terminal device；
The said equipment also includes：
Humidity sensor 806, the finger humidity for obtaining the above-mentioned original fingerprint image of input；
Above-mentioned fingerprint comparison unit 805, if being more than first for the above-mentioned finger humidity that above-mentioned humidity sensor 806 is obtained
Threshold value then determines that above-mentioned validity feature point is unsatisfactory for above-mentioned prerequisite and determines above-mentioned original fingerprint less than Second Threshold
Image can not be identified, then perform the above-mentioned fingerprint analogue data of above-mentioned use and be compared with above-mentioned registered fingerprint.
In the present embodiment, terminal device has fingerprint collecting equipment and humidity sensor, it is to be appreciated that first
Threshold value is that, for determining the overly wet critical value that may result in original fingerprint image None- identified of finger, Second Threshold is then used for
Determine the too dry critical value that may result in original fingerprint image None- identified of finger；Therefore, first threshold can be much larger than second
Threshold value；If finger humidity is between first threshold and Second Threshold, two kinds of alignments can be arbitrarily selected, in addition can also
The other modes recorded by previous embodiment predict original fingerprint figure to determine whether characteristic point meets other prerequisites
Seem that no can be identified.The citing of the present embodiment can be integrated with the prerequisite in previous embodiment and used, and
Prerequisite is not unique in previous embodiment, and the citing of the present embodiment should not be construed as the uniqueness limit to the embodiment of the present invention
It is fixed.
Feature amplification in the embodiment of the present invention can comprising making fingerprint image become relatively sharp, feature become apparent with
And fingerprint image is subjected to all image processing algorithms that repairing obtains closer real fingerprint image, this gives
One of them preferred citing, it is specific as follows：As shown in figure 9, above-mentioned fingerprint processing unit 804, including：
Pixel value acquiring unit 901, the pixel value for obtaining each pixel in above-mentioned original fingerprint image；
Grey decision-making computing unit 902 is and adjacent with above-mentioned target pixel points for the pixel value according to target pixel points
Pixel pixel value, calculate the grey decision-making of above-mentioned target pixel points；Above-mentioned target pixel points belong to above-mentioned original fingerprint figure
Pixel as in；
Series determining unit 903, for being obtained in above-mentioned original fingerprint image after the grey decision-making of each pixel, really in calculating
The series of the grey decision-making of fixed above-mentioned original fingerprint image；
Image conversion unit 904, the series of the grey decision-making for improving above-mentioned original fingerprint image, by above-mentioned original fingerprint
Image is converted to fingerprint analogue data.
Pixel point value, is the parameter for being used in fingerprint image measure each pixel in fingerprint image, with capacitive fingerprint
Exemplified by collecting device, the pixel value can be the capacitance after capacitance or weighting.Different fingerprint image acquisition skills
Art can not make uniqueness restriction to that should have different pixel values to this embodiment of the present invention.
Grey decision-making be pixel it is most dark it is black to most it is bright it is white between brightness hierarchical relationship；In Windows
In, usually 256 rank, digit is 8, a value per single order in correspondence 0~255, referred to as grey decision-making.
Gray scale is had differences between the black of the different saturation on the basis of black, gray scale, by 100% black with
Saturation degree between 0% black (white) is divided into multiple levels, then each species saturation can correspond to one of level, is
Grey decision-making；The quantity of all different grey decision-makings being related to of one image is the series of grey decision-making.At present in computer technology
Field uses binary system, and grey decision-making is represented with digit, it is assumed that digit is m, then the m power GTGs that can have 2 are expressed.Example
Such as：8 can represent 256 grey decision-makings.Understood based on described above：The series of grey decision-making can be set, however it is not limited to
One fixed value.
The embodiment of the present invention, by the processing of the pixel value to original fingerprint image, obtains the grey decision-making of each pixel value,
And the series of the grey decision-making of the original fingerprint image has been determined therefrom that, the series of the grey decision-making by improving the original fingerprint image
Fingerprint analogue data is obtained, can make fingerprint analogue data relative to original fingerprint image closer to real fingerprint image
Picture, and make the feature of fingerprint analogue data more prominent, so that be conducive to improving the discrimination of fingerprint image, and it is further favourable
In the raising of unblock rate and authentication efficiency.
Alternatively, above-mentioned pixel value acquiring unit 901, above-mentioned original fingerprint is gathered specifically for obtaining fingerprint collecting equipment
Image obtain fingerprint image in each pixel capacitance, or capacitance weighted value.
It is understood that different fingerprint image acquisition technologies can be to that should have different pixel values, therefore with electric capacity
Value, or the pixel value exemplified by the weighted value of capacitance, should not be construed as the uniqueness restriction to the embodiment of the present invention.
Alternatively, the present embodiment additionally provides the circular of grey decision-making, specific as follows：Above-mentioned grey decision-making calculates single
Member 902, the central point pixel value in default size contiguous range specifically for determining above-mentioned target pixel points, max pixel value
And minimum pixel value；
The grey decision-making for calculating above-mentioned target pixel points is：A* (central point pixel value-minimum pixel value)/(maximum pixel
Value-minimum pixel value), wherein 200≤A≤255.
In above-mentioned target pixel points and the pixel adjacent with above-mentioned target pixel points, positioned at the pixel of central point
Pixel value be central point pixel value, the maximum corresponding pixel value of pixel of pixel value is max pixel value, and pixel value is minimum
The corresponding pixel value of pixel be minimum pixel value.Pixel can be taken into full account by the calculation of the embodiment of the present invention
With the difference between surrounding pixel point, so that it is determined that a relatively reasonable grey decision-making.
Alternatively, the above-mentioned pixel adjacent with above-mentioned target pixel points includes：
The n*n pixel put centered on above-mentioned target pixel points, above-mentioned n is the odd number more than 1.
In the present embodiment, n values are the odd number more than 1, and target pixel points can so be located at and participates in grey decision-making meter
The center of calculation, is conducive to the accurate grey decision-making for determining target pixel points；The common values of wherein n can be 3 or 5, also may be used
To be other values；Less n can improve computational efficiency, and larger n can make fingerprint image more balanced, both balances,
5 or 7 can be used as compared with the figure of merit.
The embodiment of the present invention additionally provides a kind of terminal device, as shown in Figure 10, including：Processor 1001 and memory
1002；The caching that wherein memory 1002 can be used for required for the execution data processing of processor 1001, can be also used for providing
Data and the memory space of the result data of acquisition that the execution data processing of processor 1001 is called；Can modeling as one
Block, terminal device can also include fingerprint collecting equipment 1003；If it should be noted that original fingerprint image comes from it
The fingerprint image of his equipment collection, local terminal can not have the fingerprint collecting equipment 1003；In addition, the present embodiment
In, humidity sensor 1004 can also be included, the purposes of wherein humidity sensor 1004 is described in detail in subsequent embodiment；
It should be noted that may not necessarily have humidity sensor 1004 according to the judgment mode of other validity feature points.
Wherein, above-mentioned processor 1001, for obtaining original fingerprint image, and determination and above-mentioned original fingerprint image institute are right
The registered fingerprint answered；The validity feature point of above-mentioned original fingerprint image is determined, determines whether above-mentioned validity feature point meets preset
Condition, above-mentioned prerequisite be for determine above-mentioned original fingerprint image whether the condition that can be correctly validated；If in satisfaction
State prerequisite and determine that above-mentioned original fingerprint image can be identified, then using above-mentioned original fingerprint image and above-mentioned registered fingerprint
It is compared；If being unsatisfactory for above-mentioned prerequisite determines that above-mentioned original fingerprint image can not be identified, first to above-mentioned original
Beginning fingerprint image carries out feature enhanced processing and obtains fingerprint analogue data, then using above-mentioned fingerprint analogue data and above-mentioned registration
Fingerprint is compared.
In the present embodiment, original fingerprint image is the fingerprint image for subsequent fingerprint analogue data, can be with
It is the fingerprint image that other equipment is sent or the fingerprint image that local device collection is obtained；Registered fingerprint is storage
It is typically to be preset by user, corresponding to behaviour local for used fingerprint to be compared to user's input fingerprint
Make the certification of authority.
Validity feature point is the obvious characteristic point of those features in fingerprint image, can using single feature point as judge according to
According to individually judging whether each characteristic point is obvious, it is then determined that whether the characteristic point of whole fingerprint image is obvious；Can also be
Directly judged by foundation of the validity feature point of overall original fingerprint image, for example：When finger humidity is too high, original finger
Print image can be rendered as the small overall feature of peak valley difference；When finger humidity is too low, original fingerprint image can be presented fingerprint and not connect
It is continuous, the characteristics of peak valley of characteristic point disconnects more.Preset condition then can respective settings accordingly.Due to judging original fingerprint figure
Seem the no mode that can be identified, there are different algorithms available based on different characteristic point judgment modes, the present invention is real
Exhaustion can not be carried out to it by applying example, therefore the embodiment of the present invention does not make uniqueness restriction to this.
In the present embodiment, primarily determine that can original fingerprint image be known by the validity feature point of original fingerprint image
Do not come out, so as to select the unlocked by fingerprint mode being more suitable for；Wherein, the characteristic point in original fingerprint image is less or unobvious
In the case of preferably used the mode compared after the amplification of first feature and ensure to unlock success rate；In the characteristic point of original fingerprint image
In the case of being substantially identified, it is possible to reduce the processing procedure such as feature amplification, so as to save the time of unlocked by fingerprint, improve
Unlocked by fingerprint efficiency.
Can the embodiment of the present invention gives one can by as the determination original fingerprint image of preferred implementation scheme
Identification and the implementation of alignment schemes selection, it is specific as follows：Alternatively, above-mentioned processor 1001, for obtaining original finger
Print image includes：For obtaining original fingerprint image by the fingerprint collecting equipment of terminal device；Above-mentioned processor 1001, is also used
In the finger humidity that the above-mentioned original fingerprint image of input is obtained by humidity sensor；If above-mentioned finger humidity is more than first threshold
Or then determine that above-mentioned validity feature point is unsatisfactory for above-mentioned prerequisite and determines above-mentioned original fingerprint image less than Second Threshold
It can not be identified, then perform the above-mentioned feature enhanced processing that carried out first to above-mentioned original fingerprint image and obtain fingerprint simulation number
According to being then compared using above-mentioned fingerprint analogue data and above-mentioned registered fingerprint.
In the present embodiment, terminal device has fingerprint collecting equipment and humidity sensor, it is to be appreciated that first
Threshold value is that, for determining the overly wet critical value that may result in original fingerprint image None- identified of finger, Second Threshold is then used for
Determine the too dry critical value that may result in original fingerprint image None- identified of finger；Therefore, first threshold can be much larger than second
Threshold value；If finger humidity is between first threshold and Second Threshold, two kinds of alignments can be arbitrarily selected, in addition can also
The other modes recorded by previous embodiment predict original fingerprint figure to determine whether characteristic point meets other prerequisites
Seem that no can be identified.The citing of the present embodiment can be integrated with the prerequisite in previous embodiment and used, and
Prerequisite is not unique in previous embodiment, and the citing of the present embodiment should not be construed as the uniqueness limit to the embodiment of the present invention
It is fixed.
Feature amplification in the embodiment of the present invention can comprising making fingerprint image become relatively sharp, feature become apparent with
And fingerprint image is subjected to all image processing algorithms that repairing obtains closer real fingerprint image, this gives
One of them preferred citing, it is specific as follows：Above-mentioned processor 1001, for carrying out feature amplification to above-mentioned original fingerprint image
Processing obtains fingerprint analogue data, including：
Pixel value for obtaining each pixel in above-mentioned original fingerprint image；
According to the pixel value of the pixel value of target pixel points, and the pixel adjacent with above-mentioned target pixel points, calculate
The grey decision-making of above-mentioned target pixel points；The pixel that above-mentioned target pixel points belong in above-mentioned original fingerprint image；
Obtain in above-mentioned original fingerprint image after the grey decision-making of each pixel, determining above-mentioned original fingerprint image calculating
The series of grey decision-making；
The series of the grey decision-making of above-mentioned original fingerprint image is improved, above-mentioned original fingerprint image is converted into fingerprint simulation number
According to.
The embodiment of the present invention, by the processing of the pixel value to original fingerprint image, obtains the grey decision-making of each pixel value,
And the series of the grey decision-making of the original fingerprint image has been determined therefrom that, the series of the grey decision-making by improving the original fingerprint image
Fingerprint analogue data is obtained, can make fingerprint analogue data relative to original fingerprint image closer to real fingerprint image
Picture, and make the feature of fingerprint analogue data more prominent, so that be conducive to improving the discrimination of fingerprint image, and it is further favourable
In the raising of unblock rate and authentication efficiency.
Alternatively, above-mentioned processor 1001, the pixel value for obtaining each pixel in above-mentioned original fingerprint image includes：
Electric capacity for gathering each pixel in the fingerprint image that above-mentioned original fingerprint image is obtained by fingerprint collecting equipment
Value, or capacitance weighted value.
It is understood that different fingerprint image acquisition technologies can be to that should have different pixel values, therefore with electric capacity
Value, or the pixel value exemplified by the weighted value of capacitance, should not be construed as the uniqueness restriction to the embodiment of the present invention.
Alternatively, the present embodiment additionally provides the circular of grey decision-making, specific as follows：Above-mentioned processor 1001,
For the pixel value of the pixel value according to target pixel points, and the pixel adjacent with above-mentioned target pixel points, calculate above-mentioned
The grey decision-making of target pixel points includes：
The central point pixel value in default size contiguous range, max pixel value for determining above-mentioned target pixel points with
And minimum pixel value；
The grey decision-making for calculating above-mentioned target pixel points is：A* (central point pixel value-minimum pixel value)/(maximum pixel
Value-minimum pixel value), wherein 200≤A≤255.
In above-mentioned target pixel points and the pixel adjacent with above-mentioned target pixel points, positioned at the pixel of central point
Pixel value be central point pixel value, the maximum corresponding pixel value of pixel of pixel value is max pixel value, and pixel value is minimum
The corresponding pixel value of pixel be minimum pixel value.Pixel can be taken into full account by the calculation of the embodiment of the present invention
With the difference between surrounding pixel point, so that it is determined that a relatively reasonable grey decision-making.
Alternatively, the above-mentioned pixel adjacent with above-mentioned target pixel points includes：
The n*n pixel put centered on above-mentioned target pixel points, above-mentioned n is the odd number more than 1.
In the present embodiment, n values are the odd number more than 1, and target pixel points can so be located at and participates in grey decision-making meter
The center of calculation, is conducive to the accurate grey decision-making for determining target pixel points；The common values of wherein n can be 3 or 5, also may be used
To be other values；Less n can improve computational efficiency, and larger n can make fingerprint image more balanced, both balances,
5 or 7 can be used as compared with the figure of merit.
The embodiment of the present invention additionally provides another terminal device, as shown in figure 11, for convenience of description, illustrate only with
The related part of the embodiment of the present invention, particular technique details is not disclosed, refer to present invention method part.The terminal
Can be to include mobile phone, tablet personal computer, PDA (Personal Digital Assistant, personal digital assistant), POS
Any terminal device such as (Point of Sales, point-of-sale terminal), vehicle-mounted computer, so that terminal is mobile phone as an example：
Figure 11 is illustrated that the block diagram of the part-structure of the mobile phone related to terminal provided in an embodiment of the present invention.With reference to figure
11, mobile phone includes：Radio frequency (Radio Frequency, RF) circuit 1110, memory 1120, input block 1130, display unit
1140th, sensor 1150, voicefrequency circuit 1160, Wireless Fidelity (wireless fidelity, WiFi) module 1170, processor
The part such as 1180 and power supply 1190.It will be understood by those skilled in the art that the handset structure shown in Figure 11 is not constituted pair
The restriction of mobile phone, can include than illustrating more or less parts, either combine some parts or different part cloth
Put.
Each component parts of mobile phone is specifically introduced with reference to Figure 11：
RF circuits 1110 can be used for receive and send messages or communication process in, the reception and transmission of signal, especially, by base station
After downlink information is received, handled to processor 1180；In addition, being sent to base station by up data are designed.Generally, RF circuits
1110 include but is not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier (Low Noise
Amplifier, LNA), duplexer etc..In addition, RF circuits 1110 can also be logical by radio communication and network and other equipment
Letter.Above-mentioned radio communication can use any communication standard or agreement, including but not limited to global system for mobile communications (Global
System of Mobile communication, GSM), general packet radio service (General Packet Radio
Service, GPRS), CDMA (Code Division Multiple Access, CDMA), WCDMA
(Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long Term Evolution,
LTE), Email, Short Message Service (Short Messaging Service, SMS) etc..
Memory 1120 can be used for storage software program and module, and processor 1180 is stored in memory by operation
1120 software program and module, so as to perform various function application and the data processing of mobile phone.Memory 1120 can be led
To include storing program area and storage data field, wherein, storing program area can be needed for storage program area, at least one function
Application program (such as sound-playing function, image player function etc.) etc.；Storage data field can store the use institute according to mobile phone
Data (such as voice data, phone directory etc.) of establishment etc..In addition, memory 1120 can include high random access storage
Device, can also include nonvolatile memory, and for example, at least one disk memory, flush memory device or other volatibility are solid
State memory device.
Input block 1130 can be used for the numeral or character information for receiving input, and produce with the user of mobile phone set with
And the relevant key signals input of function control.Specifically, input block 1130 may include contact panel 1131 and other inputs
Equipment 1132.Contact panel 1131, also referred to as touch-screen, collect touch operation (such as user of the user on or near it
Use the behaviour of any suitable object such as finger, stylus or annex on contact panel 1131 or near contact panel 1131
Make), and corresponding attachment means are driven according to formula set in advance.Optionally, contact panel 1131 may include touch detection
Two parts of device and touch controller.Wherein, touch detecting apparatus detects the touch orientation of user, and detects touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
It is converted into contact coordinate, then gives processor 1180, and the order sent of reception processing device 1180 and can be performed.In addition,
Contact panel 1131 can be realized using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except touch surface
Plate 1131, input block 1130 can also include other input equipments 1132.Specifically, other input equipments 1132 can include
But it is not limited in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc.
It is one or more.
Display unit 1140 can be used for each of the information that is inputted by user of display or the information for being supplied to user and mobile phone
Plant menu.Display unit 1140 may include display panel 1141, optionally, can use liquid crystal display (Liquid
Crystal Display, LCD), the form such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED)
To configure display panel 1141.Further, contact panel 1131 can cover display panel 1141, when contact panel 1131 is detected
To after the touch operation on or near it, processor 1180 is sent to determine the type of touch event, with preprocessor
1180 provide corresponding visual output according to the type of touch event on display panel 1141.Although in fig. 11, touch surface
Plate 1131 and display panel 1141 are input and the input function that mobile phone is realized as two independent parts, but some
, can be by contact panel 1131 and the input that is integrated and realizing mobile phone of display panel 1141 and output function in embodiment.
Mobile phone may also include at least one sensor 1150, such as optical sensor, motion sensor and other sensors.
Specifically, optical sensor may include ambient light sensor and proximity transducer, wherein, ambient light sensor can be according to ambient light
Light and shade adjust the brightness of display panel 1141, proximity transducer can close display panel when mobile phone is moved in one's ear
1141 and/or backlight.As one kind of motion sensor, accelerometer sensor can detect in all directions (generally three axles) and add
The size of speed, can detect that size and the direction of gravity when static, application (the such as horizontal/vertical screen available for identification mobile phone posture
Switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；As for mobile phone also
The other sensors such as configurable gyroscope, barometer, hygrometer, thermometer, infrared ray sensor, will not be repeated here.
Voicefrequency circuit 1160, loudspeaker 1161, microphone 1162 can provide the COBBAIF between user and mobile phone.Audio
Electric signal after the voice data received conversion can be transferred to loudspeaker 1161, is changed by loudspeaker 1161 by circuit 1160
Exported for voice signal；On the other hand, the voice signal of collection is converted to electric signal by microphone 1162, by voicefrequency circuit 1160
Voice data is converted to after reception, then after voice data output processor 1180 is handled, through RF circuits 1110 to be sent to ratio
Such as another mobile phone, or voice data is exported to memory 1120 so as to further processing.
WiFi belongs to short range wireless transmission technology, and mobile phone can help user's transceiver electronicses postal by WiFi module 1170
Part, browse webpage and access streaming video etc., it has provided the user wireless broadband internet and accessed.Although Figure 11 is shown
WiFi module 1170, but it is understood that, it is simultaneously not belonging to must be configured into for mobile phone, can not change as needed completely
Become in the essential scope of invention and omit.
Processor 1180 is the control centre of mobile phone, using various interfaces and the various pieces of connection whole mobile phone,
By operation or perform and be stored in software program and/or module in memory 1120, and call and be stored in memory 1120
Interior data, perform the various functions and processing data of mobile phone, so as to carry out integral monitoring to mobile phone.Optionally, processor
1180 may include one or more processing units；It is preferred that, processor 1180 can integrated application processor and modulation /demodulation processing
Device, wherein, application processor mainly handles operating system, user interface and application program etc., and modem processor is mainly located
Manage radio communication.It is understood that above-mentioned modem processor can not also be integrated into processor 1180.
Mobile phone also includes the power supply 1190 (such as battery) powered to all parts, it is preferred that power supply can pass through power supply
Management system and processor 1180 are logically contiguous, so as to realize management charging, electric discharge and power consumption pipe by power-supply management system
The functions such as reason.
Although not shown, mobile phone can also include camera, bluetooth module etc., will not be repeated here.
In previous embodiment, the structure realization that each step method flow can be based on the terminal device.Wherein sensor
1150 or contact panel 1131 can be used as fingerprint collecting equipment.
It is worth noting that, in above-mentioned unlocked by fingerprint control device embodiment, included unit is simply according to work(
Energy logic is divided, but is not limited to above-mentioned division, as long as corresponding function can be realized；In addition, each work(
The specific name of energy unit is also only to facilitate mutually distinguish, the protection domain being not intended to limit the invention.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in above-mentioned each method embodiment
It can be by program to instruct the hardware of correlation to complete, corresponding program can be stored in a kind of computer-readable recording medium
In, storage medium mentioned above can be read-only storage, disk or CD etc..
The present invention preferably embodiment is these are only, but protection scope of the present invention is not limited thereto, it is any
Those familiar with the art the change that can readily occur in or replaces in the technical scope that the embodiment of the present invention is disclosed
Change, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Enclose and be defined.
Claims (9)
1. a kind of unlocked by fingerprint control method, it is characterised in that including：
Original fingerprint image is obtained by the fingerprint collecting equipment of terminal device；And corresponding to determination and the original fingerprint image
Registered fingerprint；
The finger humidity for inputting the original fingerprint image is obtained by humidity sensor；
The validity feature point of the original fingerprint image is determined, determines whether the validity feature point meets prerequisite, it is described
Prerequisite be for determine the original fingerprint image whether the condition that can be correctly validated；
If meeting the prerequisite determines that the original fingerprint image can be identified, using the original fingerprint image with
The registered fingerprint is compared；
Determine that the validity feature point is unsatisfactory for if the finger humidity is more than first threshold or less than Second Threshold described
Prerequisite simultaneously determines that the original fingerprint image can not be identified, then obtains each pixel in the original fingerprint image first
The pixel value of point；According to the pixel value of the pixel value of target pixel points, and the pixel adjacent with the target pixel points, meter
Calculate the grey decision-making of the target pixel points；The pixel that the target pixel points belong in the original fingerprint image；Calculating
Obtain in the original fingerprint image after the grey decision-making of each pixel, determining the series of the grey decision-making of the original fingerprint image；
The series of the grey decision-making of the original fingerprint image is improved, the original fingerprint image fingerprint analogue data is converted into, then
It is compared using the fingerprint analogue data and the registered fingerprint.
2. method according to claim 1, it is characterised in that the picture of each pixel in the acquisition original fingerprint image
Plain value includes：
The capacitance of each pixel in the fingerprint image that the fingerprint collecting equipment collection original fingerprint image is obtained, or capacitance
Weighted value.
3. method according to claim 1, it is characterised in that the pixel value according to target pixel points, and with it is described
The pixel value of the adjacent pixel of target pixel points, calculating the grey decision-making of the target pixel points includes：
Determine central point pixel value, max pixel value and the minimum image in the default size contiguous range of the target pixel points
Element value；
The grey decision-making for calculating the target pixel points is：A* (central point pixel value-minimum pixel value)/(max pixel value-most
Small pixel value), wherein 200≤A≤255.
4. method according to claim 1, it is characterised in that the pixel adjacent with the target pixel points includes：
The n*n pixel put centered on the target pixel points, the n is the odd number more than 1.
5. a kind of unlocked by fingerprint control device, it is characterised in that including：
Fingerprint acquiring unit, for obtaining original fingerprint image by the fingerprint collecting equipment of terminal device；
Humidity sensor, the finger humidity for obtaining the input original fingerprint image；
Fingerprint determining unit, for determining and the registered fingerprint corresponding to the original fingerprint image；
Determining unit is recognized, whether the validity feature point for determining the original fingerprint image determines the validity feature point
Meet prerequisite, the prerequisite be for determine the original fingerprint image whether the condition that can be correctly validated；
Pixel value acquiring unit, the pixel value for obtaining each pixel in the original fingerprint image；
Grey decision-making computing unit, for the pixel value according to target pixel points, and the pixel adjacent with the target pixel points
The pixel value of point, calculates the grey decision-making of the target pixel points；The target pixel points belong in the original fingerprint image
Pixel；
Series determining unit, for being obtained in calculating in the original fingerprint image after the grey decision-making of each pixel, it is determined that described
The series of the grey decision-making of original fingerprint image；
Image conversion unit, the series of the grey decision-making for improving the original fingerprint image turns the original fingerprint image
It is changed to fingerprint analogue data；
Fingerprint comparison unit, if determining that meeting the prerequisite determines the original fingerprint figure for the identification determining unit
As that can be identified, then it is compared using the original fingerprint image and the registered fingerprint；If the humidity sensor is obtained
The finger humidity taken is more than first threshold or then to determine that the validity feature point is unsatisfactory for less than Second Threshold described pre-
Put condition and determine that the original fingerprint image can not be identified, entered using the fingerprint analogue data and the registered fingerprint
Row is compared.
6. equipment according to claim 5, it is characterised in that
The pixel value acquiring unit, the fingerprint that the original fingerprint image is obtained is gathered specifically for obtaining fingerprint collecting equipment
The capacitance of each pixel in image, or capacitance weighted value.
7. equipment according to claim 5, it is characterised in that
The grey decision-making computing unit, the central point in default size contiguous range specifically for determining the target pixel points
Pixel value, max pixel value and minimum pixel value；
The grey decision-making for calculating the target pixel points is：A* (central point pixel value-minimum pixel value)/(max pixel value-most
Small pixel value), wherein 200≤A≤255.
8. equipment according to claim 5, it is characterised in that the pixel adjacent with the target pixel points includes：
The n*n pixel put centered on the target pixel points, the n is the odd number more than 1.
9. a kind of terminal device, including：Processor and memory, wherein the processor, which is used for perform claim, requires that 1 to 4 is any
Method described in one.
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| CN106503525A (en) * | 2016-10-31 | 2017-03-15 | 三星电子（中国）研发中心 | Unlocked by fingerprint method, device and terminal |
| CN106803058A (en) * | 2016-11-30 | 2017-06-06 | 努比亚技术有限公司 | A kind of terminal and fingerprint identification method |
| WO2018107401A1 (en) * | 2016-12-14 | 2018-06-21 | 深圳市汇顶科技股份有限公司 | Method and device for detecting wet hand area in fingerprint image |
| CN106709459A (en) * | 2016-12-27 | 2017-05-24 | 努比亚技术有限公司 | Fingerprint identification method and mobile terminal |
| TWI650712B (en) * | 2017-09-30 | 2019-02-11 | 北京集創北方科技股份有限公司 | Fingerprint capture method and fingerprint capture module |
| CN112991594A (en) * | 2021-04-01 | 2021-06-18 | 德施曼机电（中国）有限公司 | Fingerprint lock and unlocking method thereof |
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| CN1538345A (en) * | 2003-04-18 | 2004-10-20 | ����ŷ�������ʽ���� | Fingerprinter image reading device |
| CN103065134A (en) * | 2013-01-22 | 2013-04-24 | 江苏超创信息软件发展股份有限公司 | Fingerprint identification device and method with prompt information |
| CN104766074A (en) * | 2015-04-29 | 2015-07-08 | 宁波摩米创新工场电子科技有限公司 | Bias voltage type fingerprint recognition system based on logic amplifying processing |
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