CN106056073B - A kind of unlocked by fingerprint method and equipment - Google Patents
A kind of unlocked by fingerprint method and equipment Download PDFInfo
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- CN106056073B CN106056073B CN201610369580.0A CN201610369580A CN106056073B CN 106056073 B CN106056073 B CN 106056073B CN 201610369580 A CN201610369580 A CN 201610369580A CN 106056073 B CN106056073 B CN 106056073B
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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
- G06V40/1347—Preprocessing; Feature extraction
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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
-
- 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
Abstract
The embodiment of the invention discloses a kind of unlocked by fingerprint method and equipment, the realization of wherein method includes：Original fingerprint image is obtained, and is determined and the registered fingerprint corresponding to the original fingerprint image；Following two alignments are performed parallel：It is compared using the original fingerprint image with the registered fingerprint；And feature enhanced processing is carried out to the original fingerprint image first and obtains fingerprint analogue data, then it is compared using the fingerprint analogue data with the registered fingerprint；If any alignments comparison result in both the above alignments is by terminating another alignments.Parallel perform two kinds of unlocked by fingerprint modes can obtain higher unblock success rate, take into account in addition original fingerprint picture quality it is higher in the case of, use the alignment algorithm of lower complexity, so as to save the time of unlocked by fingerprint, improve unlocked by fingerprint efficiency.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of unlocked by fingerprint method and equipment.
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 the skin of bumps
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 are 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 unblock and the wake-up of mobile terminal, and the ring that mobile payment is important.Fingerprint, which is paid, 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 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 using the fingerprint after feature amplification
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 of technical staff's research from unlocked by fingerprint efficiency is improved.
The content of the invention
The embodiments of the invention provide a kind of unlocked by fingerprint method and equipment, for improving unlocked by fingerprint efficiency.
On the one hand the embodiments of the invention provide a kind of unlocked by fingerprint method, including：
Original fingerprint image is obtained, and is determined and the registered fingerprint corresponding to the original fingerprint image；
Following two alignments are performed parallel：It is compared using the original fingerprint image with the registered fingerprint；
And feature enhanced processing is carried out to the original fingerprint image first and obtains fingerprint analogue data, then using the fingerprint
Analogue data is compared with the registered fingerprint；
If any alignments comparison result in both the above alignments is by terminating another alignments.
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 target pixel points, and the pixel value of 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；
It is being calculated in the original fingerprint image after the grey decision-making of each pixel, is determining the original fingerprint image
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 obtains, 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 are the odd number more than 1.
In an optional implementation, the acquisition original fingerprint image includes：
Original fingerprint image is received, or, original fingerprint image is collected by the fingerprint collecting equipment of local.
The aspect of the embodiment of the present invention two provides a kind of unlocked by fingerprint equipment, including：
Fingerprint acquiring unit, for obtaining original fingerprint image；
Fingerprint determining unit, for determining and the registered fingerprint corresponding to the original fingerprint image；
Fingerprint processing unit, fingerprint analogue data is obtained for carrying out feature enhanced processing to the original fingerprint image；
Fingerprint comparison unit, for performing following two alignments parallel：Using the original fingerprint image with it is described
Registered fingerprint is compared；And it is compared using the fingerprint analogue data with the registered fingerprint；If both the above ratio
It is by terminating another alignments to any alignments comparison result in mode.
In an optional implementation, the fingerprint processing unit, including：
Pixel value acquiring unit, for obtaining the pixel value of 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, calculate 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 calculated 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, adopted specifically for obtaining fingerprint collecting equipment
Collect the capacitance of each pixel in the fingerprint image that the original fingerprint image obtains, or the weighted value of capacitance.
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 are the odd number more than 1.
In an optional implementation, the fingerprint acquiring unit, specifically for receiving original fingerprint image, or
Person, original fingerprint image is collected by the fingerprint collecting equipment of local.
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：Due to latter unlocked by fingerprint side
Formula amount of calculation is bigger, therefore former unlocked by fingerprint mode can terminate first, but second-rate due to original fingerprint image
It can lead to not identify.Therefore latter approach can solve caused unlocked by fingerprint failure in this case.It is parallel to perform two
Kind unlocked by fingerprint mode can obtain higher unblock success rate, take into account the higher situation of original fingerprint picture quality in addition
Under, using the alignment algorithm of lower complexity, so as to save the time of unlocked by fingerprint, improve unlocked by fingerprint efficiency.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make 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 is unlocked by fingerprint device structure schematic diagram of the embodiment of the present invention；
Fig. 9 is unlocked by fingerprint device structure schematic diagram 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, the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail, it is clear that the described embodiment only a part of embodiment of the present invention, 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 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 obtains；Registered fingerprint is storage
Used fingerprint is compared for inputting fingerprint to user in local, is typically preset by user, corresponding to behaviour
Make the certification of authority.
102：Following two alignments are performed parallel：Compared using above-mentioned original fingerprint image with above-mentioned registered fingerprint
It is right；And feature enhanced processing is carried out to above-mentioned original fingerprint image first and obtains fingerprint analogue data, then using above-mentioned finger
Line analogue data is compared with above-mentioned registered fingerprint；
In the present embodiment, the hand dried for hands wet with perspiration or especially, for this kind of user, their unlocked by fingerprint success
Rate can be very low；But for those more moderate users, using original fingerprint image also have higher unlocked by fingerprint into
Power.It is parallel to perform both the above alignments, i.e., two kinds of unlocked by fingerprint modes are employed simultaneously, for different users
Speech, both the above unlocked by fingerprint mode can't compare simultaneously to be passed through.
103：If any alignments comparison result in both the above alignments is by the way that end is another to compare other side
Formula.
In embodiments of the present invention, because latter unlocked by fingerprint mode amount of calculation is bigger, therefore former unlocked by fingerprint
Mode can terminate first, but because the second-rate of original fingerprint image can lead to not identify.Therefore latter approach can
To solve caused unlocked by fingerprint failure in this case.Higher unblock can be obtained by performing two kinds of unlocked by fingerprint modes parallel
Success rate, take into account in addition original fingerprint picture quality it is higher in the case of, using the alignment algorithm of lower complexity, so as to save
The time of unlocked by fingerprint is saved, improves unlocked by fingerprint efficiency.
In the embodiment of the present invention feature amplification can include fingerprint image is become relatively sharp, feature become apparent with
And fingerprint image is carried out to all image processing algorithms of the closer real fingerprint image of repairing acquisition, this gives
One of them is preferably illustrated, 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 target pixel points, and the pixel value of 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；
It is being calculated in above-mentioned original fingerprint image after the grey decision-making of each pixel, is determining above-mentioned original fingerprint image
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, it is the parameter for being used to measure each pixel in fingerprint image 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 be corresponding with different pixel values, not make uniqueness restriction to this embodiment of the present invention.
Grey decision-making be pixel it is most dark it is black to it is most bright it is white between brightness hierarchical relationship；In Windows
In, usually 256 rank, digit are 8, and a value in 0~255, referred to as grey decision-making are corresponded to per single order.
Gray scale is the black of the different saturation on the basis of black, is had differences between 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, be
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 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, the grey decision-making of each pixel value is obtained,
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, fingerprint analogue data can be made relative to the more close real fingerprint image of original fingerprint image
Picture, and make the feature of fingerprint analogue data more prominent, so as to be advantageous to improve 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 obtains, or electric capacity
The weighted value of value.
It is understood that different fingerprint image acquisition technologies can be corresponding with different pixel values, therefore with electric capacity
Value, or the pixel value exemplified by the weighted value of capacitance, it 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 value of the pixel adjacent with above-mentioned target pixel points, 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, pixel value corresponding to the maximum pixel of pixel value be max pixel value, pixel value minimum
Pixel corresponding to pixel value 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 are the odd number more than 1.
In the present embodiment, n values are the odd number more than 1, can so make target pixel points positioned at participation grey decision-making meter
The center of calculation, be advantageous 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,
It can be used using 5 or 7 as compared with the figure of merit.
Alternatively, above-mentioned acquisition original fingerprint image includes：
Original fingerprint image is received, or, original fingerprint image is collected by the fingerprint collecting equipment of local.
In the present embodiment, original fingerprint image is obtained, refers to receive the original fingerprint image that other equipment is sent, in fingerprint
Identify under application scenarios, the executive agent of the present embodiment can be terminal device or server；So server can receive
The original fingerprint image of fingerprint collecting equipment collection from terminal device, terminal device can also receive fingerprint collecting equipment and adopt
The original fingerprint image of collection, or the original fingerprint image of the fingerprint collecting equipment collection of other-end.
In embodiments of the present invention, fingerprint collecting equipment is main is gone to gather fingerprint image, fingerprint image by fingerprint chip
The principle of acquisition is that fingerprint chip internal pixel (pixel) as m*n array forms, as shown in Fig. 2 shown in dotted line frame
Region is fingerprint chip, and the array in Fig. 2 has a 56*192, and one shares 10752 pixel points, during fingerprint collecting, can be adopted
Collect 10752 pixel values, corresponding each pixel values can be showed by the form of image；
When finger down fingerprint chip 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 core
Sector-meeting forms a rough three-dimensional surface according to the capacitance size of 10752 pixels, is 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 relative to the flat of 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.
For user when unlocked by fingerprint, pressing is overweight or kicks the beam and can all cause fogging image, and unblock mortality carries
Rise, also user easily occurs weighing the situation while light, cause image uniform when strip fingerprint chip is pressed
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 introduce influence of the GTG to fingerprint image.
GTG refer to it is most dark it is black to it is most 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, it is 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 the design of whole fingerprint chip, square chip package is often square into module
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 heavy (left side is light, right side weight), caused fingerprint image is uneven, in circular and square finger
Line chip, same similar uneven phenomenon also occurs.It can cause to unlock mortality raising.
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 to illustrate, other neighborhoods such as 5*5 or 7*7.
602：Pixel points in this neighborhood are counted；
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, if the value being calculated has decimal so to need to take it
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, for example is originally that 6 are quantified as 8
GTG, the definition of image more preferably, are more nearly actual fingerprint, improve 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 participate in calculating grey decision-making using the pixel value after raising digit；The calculation of other above-mentioned calculating grey decision-making
255 value can determine 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 equipment, as shown in figure 8, 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；
Fingerprint processing unit 803, fingerprint simulation number is obtained for carrying out feature enhanced processing to above-mentioned original fingerprint image
According to；
Fingerprint comparison unit 804, for performing following two alignments parallel：Using above-mentioned original fingerprint image with it is upper
Registered fingerprint is stated to be compared；And it is compared using above-mentioned fingerprint analogue data with above-mentioned registered fingerprint；If both the above
Any alignments comparison result in alignments is by terminating another alignments.
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 obtains；Registered fingerprint is storage
Used fingerprint is compared for inputting fingerprint to user in local, is typically preset by user, corresponding to behaviour
Make the certification of authority.
In the present embodiment, the hand dried for hands wet with perspiration or especially, for this kind of user, their unlocked by fingerprint success
Rate can be very low；But for those more moderate users, using original fingerprint image also have higher unlocked by fingerprint into
Power.It is parallel to perform both the above alignments, i.e., two kinds of unlocked by fingerprint modes are employed simultaneously, for different users
Speech, both the above unlocked by fingerprint mode can't compare simultaneously to be passed through.Because latter unlocked by fingerprint mode amount of calculation is bigger, because
This former unlocked by fingerprint mode can terminate first, but because the second-rate of original fingerprint image can lead to not identify.
Therefore latter approach can solve caused unlocked by fingerprint failure in this case.Performing two kinds of unlocked by fingerprint modes parallel can
To obtain higher unblock success rate, take into account in addition original fingerprint picture quality it is higher in the case of, use lower complexity
Alignment algorithm, so as to save the time of unlocked by fingerprint, improve unlocked by fingerprint efficiency.
In the embodiment of the present invention feature amplification can include fingerprint image is become relatively sharp, feature become apparent with
And fingerprint image is carried out to all image processing algorithms of the closer real fingerprint image of repairing acquisition, this gives
One of them is preferably illustrated, specific as follows：As shown in figure 9, above-mentioned fingerprint processing unit 803, including：
Pixel value acquiring unit 901, for obtaining the pixel value of 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-makings 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 calculated in above-mentioned original fingerprint image after the grey decision-making of each pixel, really
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, it is the parameter for being used to measure each pixel in fingerprint image 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 be corresponding with different pixel values, not make uniqueness restriction to this embodiment of the present invention.
Grey decision-making be pixel it is most dark it is black to it is most bright it is white between brightness hierarchical relationship；In Windows
In, usually 256 rank, digit are 8, and a value in 0~255, referred to as grey decision-making are corresponded to per single order.
Gray scale is the black of the different saturation on the basis of black, is had differences between 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, be
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 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, the grey decision-making of each pixel value is obtained,
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, fingerprint analogue data can be made relative to the more close real fingerprint image of original fingerprint image
Picture, and make the feature of fingerprint analogue data more prominent, so as to be advantageous to improve 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
The capacitance of each pixel in the fingerprint image that image obtains, or the weighted value of capacitance.
It is understood that different fingerprint image acquisition technologies can be corresponding with different pixel values, therefore with electric capacity
Value, or the pixel value exemplified by the weighted value of capacitance, it 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, pixel value corresponding to the maximum pixel of pixel value be max pixel value, pixel value minimum
Pixel corresponding to pixel value 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 are the odd number more than 1.
In the present embodiment, n values are the odd number more than 1, can so make target pixel points positioned at participation grey decision-making meter
The center of calculation, be advantageous 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,
It can be used using 5 or 7 as compared with the figure of merit.
Alternatively, above-mentioned acquisition original fingerprint image includes：
Above-mentioned fingerprint acquiring unit 801, specifically for receiving original fingerprint image, or, pass through the fingerprint collecting of local
Equipment collects original fingerprint image.
In the present embodiment, original fingerprint image is obtained, refers to receive the original fingerprint image that other equipment is sent, in fingerprint
Identify under application scenarios, the executive agent of the present embodiment can be terminal or server；So server can be received and come from
The original fingerprint image of the fingerprint collecting equipment collection of terminal, terminal device can also receive the original of fingerprint collecting equipment collection
Fingerprint image, or the original fingerprint image of the fingerprint collecting equipment collection of other-end.
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
Processor 1001 performs the memory space of the data of data processing calling and the result data of acquisition；Can modeling as one
Block, terminal device can also include fingerprint collecting equipment 1003；It should be noted that if original fingerprint image comes from it
The fingerprint image of his equipment collection, local terminal can not have the fingerprint collecting equipment 1003；
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；Following two alignments are performed parallel：Carried out using above-mentioned original fingerprint image and above-mentioned registered fingerprint
Compare；And feature enhanced processing is carried out to above-mentioned original fingerprint image first and obtains fingerprint analogue data, then using above-mentioned
Fingerprint analogue data is compared with above-mentioned registered fingerprint；If any alignments comparison result in both the above alignments
For by terminating another alignments.
In the present embodiment, the hand dried for hands wet with perspiration or especially, for this kind of user, their unlocked by fingerprint success
Rate can be very low；But for those more moderate users, using original fingerprint image also have higher unlocked by fingerprint into
Power.It is parallel to perform both the above alignments, i.e., two kinds of unlocked by fingerprint modes are employed simultaneously, for different users
Speech, both the above unlocked by fingerprint mode can't compare simultaneously to be passed through.Because latter unlocked by fingerprint mode amount of calculation is bigger, because
This former unlocked by fingerprint mode can terminate first, but because the second-rate of original fingerprint image can lead to not identify.
Therefore latter approach can solve caused unlocked by fingerprint failure in this case.Performing two kinds of unlocked by fingerprint modes parallel can
To obtain higher unblock success rate, take into account in addition original fingerprint picture quality it is higher in the case of, use lower complexity
Alignment algorithm, so as to save the time of unlocked by fingerprint, improve unlocked by fingerprint efficiency.
In the embodiment of the present invention feature amplification can include fingerprint image is become relatively sharp, feature become apparent with
And fingerprint image is carried out to all image processing algorithms of the closer real fingerprint image of repairing acquisition, this gives
One of them is preferably illustrated, specific as follows：Above-mentioned processor 1001, for carrying out feature amplification to above-mentioned original fingerprint image
Processing obtains fingerprint analogue data, including：
For obtaining the pixel value of each pixel in above-mentioned original fingerprint image；
According to the pixel value of target pixel points, and the pixel value of 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；
It is being calculated in above-mentioned original fingerprint image after the grey decision-making of each pixel, is determining above-mentioned original fingerprint image
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, the grey decision-making of each pixel value is obtained,
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, fingerprint analogue data can be made relative to the more close real fingerprint image of original fingerprint image
Picture, and make the feature of fingerprint analogue data more prominent, so as to be advantageous to improve 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 include：
The electric capacity of each pixel in fingerprint image for gathering above-mentioned original fingerprint image acquisition by fingerprint collecting equipment
Value, or the weighted value of capacitance.
It is understood that different fingerprint image acquisition technologies can be corresponding with different pixel values, therefore with electric capacity
Value, or the pixel value exemplified by the weighted value of capacitance, it 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 according to target pixel points, and the pixel value of 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, the pixel positioned at center
The pixel value of point is central point pixel value, and pixel value corresponding to the maximum pixel of pixel value is max pixel value, and pixel value is most
Pixel value corresponding to small pixel is minimum pixel value.Pixel can be taken into full account by the calculation of the embodiment of the present invention
Difference between point and 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 are the odd number more than 1.
In the present embodiment, n values are the odd number more than 1, can so make target pixel points positioned at participation grey decision-making meter
The center of calculation, be advantageous 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,
It can be used using 5 or 7 as compared with the figure of merit.
Above-mentioned processor 1001, include for obtaining original fingerprint image：
Original fingerprint image is received, or, original fingerprint image is collected by the fingerprint collecting equipment of local.
In the present embodiment, original fingerprint image is obtained, refers to receive the original fingerprint image that other equipment is sent, in fingerprint
Identify under application scenarios, the executive agent of the present embodiment can be terminal or server；So server can be received and come from
The original fingerprint image of the fingerprint collecting equipment collection of terminal, terminal device can also receive the original of fingerprint collecting equipment collection
Fingerprint image, or the original fingerprint image of the fingerprint collecting equipment collection of other-end.
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 do not disclose, refer to present invention method part.The terminal
Equipment 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 device 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 device provided in an embodiment of the present invention.Ginseng
Figure 11 is examined, mobile phone includes：Radio frequency (Radio Frequency, RF) circuit 1110, memory 1120, input block 1130, display
Unit 1140, sensor 1150, voicefrequency circuit 1160, Wireless Fidelity (Wireless Fidelity, WiFi) module 1170, place
Manage the part such as device 1180 and power supply 1190.It will be understood by those skilled in the art that the handset structure shown in Figure 11 not structure
The restriction of paired mobile phone, it can include than illustrating more or less parts, either combine some parts or different parts
Arrangement.
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 receives, handled to processor 1180；In addition, it is 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 led to 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 the various function application of mobile phone and data processing.Memory 1120 can be led
To include storing program area and storage data field, wherein, storing program area can storage program area, needed at least one function
Application program (such as sound-playing function, image player function etc.) etc.；Storage data field can store uses institute according to mobile phone
Data (such as voice data, phone directory etc.) of establishment etc..Stored in addition, memory 1120 can include high random access
Device, nonvolatile memory can also be included, a for example, at least disk memory, flush memory device or other volatibility are consolidated
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 key signals input that function control is relevant.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, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
Contact coordinate is converted into, then gives processor 1180, and the order sent of reception processing device 1180 and can be performed.In addition,
The polytypes such as resistance-type, condenser type, infrared ray and surface acoustic wave can be used to realize contact panel 1131.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 display by user input information or be supplied to user information and mobile phone it is each
Kind 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 detects
To after the touch operation on or near it, processor 1180 is sent to determine the type of touch event, is followed by subsequent processing device
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 the parts independent as two to realize the input of mobile phone and input function, but some
In embodiment, contact panel 1131 and display panel 1141 can be integrated and realize input and the output function of mobile phone.
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, size and the direction of gravity are can detect that when static, application (such as the 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 further to handle.
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 running or performing the software program and/or module that are stored in memory 1120, and call and be stored in memory 1120
Interior data, the various functions and processing data of mobile phone are performed, so as to carry out integral monitoring to mobile phone.Optionally, processor
1180 may include one or more processing units；Preferably, processor 1180 can integrate 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) to all parts power supply, 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 being not shown, mobile phone can also include camera, bluetooth module etc., will not be repeated here.
In previous embodiment, each step method flow can based on the terminal device structure realize.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 apparatus embodiments, included unit is simply patrolled according to function
Collect what is divided, but be not limited to above-mentioned division, as long as corresponding function can be realized；In addition, each function list
The specific name of member 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 realize all or part of step in above-mentioned each method embodiment
It is that by program the hardware of correlation can be instructed 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 preferable embodiment of the present invention 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 discloses
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)
- A kind of 1. unlocked by fingerprint method, it is characterised in that including：Original fingerprint image is obtained, and is determined and the registered fingerprint corresponding to the original fingerprint image；Following two alignments are performed parallel：It is compared using the original fingerprint image with the registered fingerprint；And The pixel value of each pixel in the original fingerprint image is obtained first；According to target pixel points pixel value, and with it is described The pixel value of the adjacent pixel of target pixel points, calculate the grey decision-making of the target pixel points；The target pixel points belong to Pixel in the original fingerprint image；It is being calculated in the original fingerprint image after the grey decision-making of each pixel, really The series of the grey decision-making of the fixed original fingerprint image；The series of the grey decision-making of the original fingerprint image is improved, by the original Beginning fingerprint image is converted to fingerprint analogue data, is then compared using the fingerprint analogue data with the registered fingerprint；If any alignments comparison result in both the above alignments is by terminating another alignments.
- 2. method according to claim 1, it is characterised in that the picture for obtaining each pixel in the original fingerprint image Plain value includes：The capacitance of each pixel in the fingerprint image that the fingerprint collecting equipment collection original fingerprint image obtains, or capacitance Weighted value.
- 3. method according to claim 1 or claim 2, it is characterised in that the pixel bag adjacent with the target pixel points Include：The n*n pixel put centered on the target pixel points, the n are the odd number more than 1.
- 4. method according to claim 1, it is characterised in that the acquisition original fingerprint image includes：Original fingerprint image is received, or, original fingerprint image is collected by the fingerprint collecting equipment of local.
- A kind of 5. unlocked by fingerprint equipment, it is characterised in that including：Fingerprint acquiring unit, for obtaining original fingerprint image；Fingerprint determining unit, for determining and the registered fingerprint corresponding to the original fingerprint image；Pixel value acquiring unit, for obtaining the pixel value of 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, calculate 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 calculated 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, the original fingerprint image is turned It is changed to fingerprint analogue data；Fingerprint comparison unit, for performing following two alignments parallel：Use the original fingerprint image and the registration Fingerprint is compared；And it is compared using the fingerprint analogue data with the registered fingerprint；If both the above compares other side Any alignments comparison result in formula is by terminating another alignments.
- 6. equipment according to claim 5, it is characterised in thatThe pixel value acquiring unit, the fingerprint for gathering the original fingerprint image specifically for obtaining fingerprint collecting equipment and obtaining The capacitance of each pixel in image, or the weighted value of capacitance.
- 7. according to the equipment of claim 5 or 6, it is characterised in that the pixel bag adjacent with the target pixel points Include：The n*n pixel put centered on the target pixel points, the n are the odd number more than 1.
- 8. equipment according to claim 5, it is characterised in thatThe fingerprint acquiring unit, specifically for receiving original fingerprint image, or, gathered by the fingerprint collecting equipment of local Obtain original fingerprint image.
- 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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| CN1152340C (en) * | 2001-11-29 | 2004-06-02 | 田捷 | Fingerprint image enhancement method based on knowledge |
| US20160125223A1 (en) * | 2014-10-30 | 2016-05-05 | Apple Inc. | Electronic device including multiple speed and multiple accuracy finger biometric matching and related methods |
| CN104766074B (en) * | 2015-04-29 | 2017-12-01 | 宁波摩米创新工场电子科技有限公司 | A kind of voltage bias type fingerprint recognition system of logic-based enhanced processing |
| CN204680034U (en) * | 2015-06-16 | 2015-09-30 | 迪安杰科技无锡有限公司 | Fingerprint recognition disposal system |
| CN105005776A (en) * | 2015-07-30 | 2015-10-28 | 广东欧珀移动通信有限公司 | Fingerprint identification method and device |
| CN105160303A (en) * | 2015-08-10 | 2015-12-16 | 上海闻泰电子科技有限公司 | Fingerprint identification method based on mixed matching |
| CN105243370A (en) * | 2015-10-19 | 2016-01-13 | 广东欧珀移动通信有限公司 | Fingerprint identification method, fingerprint identification device and mobile terminal |
| CN105426865B (en) * | 2015-12-07 | 2019-10-25 | 湖南融创微电子有限公司 | Fingerprint detection circuit, fingerprint sensor and fingerprint detection method |
| CN105550672B (en) * | 2016-01-28 | 2018-03-16 | 广东欧珀移动通信有限公司 | Recognition methods, identification device and electronic installation |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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Granted publication date: 20180123 |