CN106778674A - Fingerprint identification device and fingerprint identification method - Google Patents
Fingerprint identification device and fingerprint identification method Download PDFInfo
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- CN106778674A CN106778674A CN201611265368.6A CN201611265368A CN106778674A CN 106778674 A CN106778674 A CN 106778674A CN 201611265368 A CN201611265368 A CN 201611265368A CN 106778674 A CN106778674 A CN 106778674A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/56—Extraction of image or video features relating to colour
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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
- G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
- G06V40/1388—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using image processing
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention provides a kind of fingerprint identification device and fingerprint identification method.The fingerprint identification device includes the first detection module and the second detection module, wherein, the first detection module is used to detect the attribute of touching object, second detection module is used to recognize the lines information of the touching object, and the first detection module obtains the color information of the touching object for pressing on the fingerprint identification device；The color information includes the first pigment coordinate, and when the first pigment coordinate is not in the range of first threshold, then the attribute of the touching object is live body and output indication signal to the second detection module；The second detection module starts and senses the fingerprint image of the touching object according to indication signal.The fingerprint identification device energy consumption is relatively low.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of fingerprint identification device and fingerprint identification method.
Background technology
With the development of information technology and electronic technology, electronic equipment is (for example：Mobile phone, flat board etc.) with the day of people
Often live closely bound up, because electronic equipment can realize various functions, for example, make a phone call, take pictures, storing all kinds of texts
Part, instant messaging, on-line payment etc., people save all kinds of privacies on an electronic device to the dependence more and more higher of terminal
Information, the security that this allows for electronic equipment is particularly important.In the prior art, it is mounted with that fingerprint recognition is filled in the electronic device
Put, because fingerprint is the lines of the rough and uneven in surface formation of finger surface skin, and fingerprint characteristic has uniqueness, stability special
Point, therefore fingerprint sensor can be used to identifying user identity, to ensure the security of terminal.However, the finger of existing electronic equipment
Line identifying device there may be the more problem of power consumption.
The content of the invention
It is the more technical problem of the fingerprint identification device behaviour's power consumption for solving prior art electronic equipment, it is necessary to provide one
Plant power consumption less fingerprint identification device and fingerprint identification method.
A kind of fingerprint identification device, including the first detection module and the second detection module, wherein, the first detection module
Attribute for detecting touching object, the second detection module is used to recognize the lines information of the touching object,
The first detection module obtains the color information of the touching object for pressing on the fingerprint identification device；
The color information includes the first pigment coordinate, when the first pigment coordinate is not in the range of first threshold, then
The attribute of the touching object is live body and output indication signal to the second detection module；
The second detection module starts and senses the fingerprint image of the touching object according to indication signal.
In one embodiment, the second detection module is capacitance type fingerprint detection.
In one embodiment, the first detection module includes the first colour model, and first colour model is used
Image and the first pigment coordinate is exported in the touch is analyzed, wherein, the first colour model of institute is RGB color mould
Type.
In one embodiment, the first detection module also compares module including first, and the first pigment coordinate includes
Red wavelength curve, green wavelength curve and blue wavelength curve, described first compares module for the red wavelength is bent
The control signal that line is compared and exports respectively with institute green wavelength curve, blue wavelength curve, when red wavelength curve
During with blue wavelength curve and its overlapped blue wavelength curve, represent the first pigment coordinate not in first threshold scope
Interior, first compares module then exports the first control signal；When red wavelength curve and blue wavelength curve and the blue wavelength
When the difference of curve is in the range of first threshold, first compares module exports the second control signal.
In one embodiment, the first detection module also includes the second colour model, when the first detection module is defeated
When going out the second control signal, the first pigment Coordinate Conversion is the second pigment mark by the second color module.
In one embodiment, the first detection module also compares module including second, and described second compares module
Second pigment coordinate is compared with Second Threshold, when the second pigment coordinate is in Second Threshold scope, described second
Compare module and export the 3rd control signal, and using the 3rd described control signal as described indication signal.
In one embodiment, second colour model is cmyk color model, YUV colour models, CIE XYZ colors
Color model or HSV colour models.
In one embodiment, the first detection module includes live body sensor, and the second detection module includes
Fingerprint sensor, the live body sensor and the separate setting of the fingerprint sensor, wherein, the live body sensor is used for
The color information is obtained, the fingerprint sensor is used to receive the fingerprint image.
In one embodiment, the fingerprint identification device also includes processor, and the processor is used to receive described
Color information and the fingerprint image, and whether the first pigment coordinate described in comparative analysis is in the first threshold scope, with
And whether the second pigment coordinate is analyzed in the Second Threshold scope.
A kind of fingerprint identification method, including step：
Obtain the touch image of touching object；
Obtain it is described touch image the first color and its corresponding first pigment coordinate, when the first pigment coordinate not
In the range of first threshold, then the attribute of the touching object is live body and output indication signal；
The fingerprint image of the touching object is sensed according to indication signal.
In one embodiment, fingerprint image is detected using capacitance variations.
In one embodiment, analyze the touch image and export the first pigment coordinate, wherein, institute first
Colour model is RGB color model.
In one embodiment, the first pigment coordinate includes red wavelength curve, green wavelength curve and blue wavelength
Curve；The control that the red wavelength curve and institute green wavelength curve, blue wavelength curve are compared and exported respectively
Signal processed, when red wavelength curve and blue wavelength curve and its overlapped blue wavelength curve, represents the first pigment
Coordinate exports the first control signal not in the range of first threshold；When red wavelength curve and blue wavelength curve and the indigo plant
When the difference of color wavelength curve is in the range of first threshold, the second control signal is exported.
In one embodiment, when the first detection module exports the second control signal, by the first pigment coordinate
The second pigment coordinate, relatively more described second pigment coordinate and Second Threshold scope are converted to, when the second pigment coordinate is in
Second Threshold scope, exports the 3rd control signal, and the 3rd described control signal is used as described indication signal.
Compared to prior art, the present invention carries out Treatment Analysis by the color information to the touch main body, can be with standard
Really judge fingerprint to be identified to be is live body people's fingerprint, can be used to identifying user identity, to ensure the security of the electronic equipment,
Can prevent fingerprint film and other fingerprints from pretending to be.
Brief description of the drawings
In order to illustrate more clearly of embodiment of the present invention or technical scheme of the prior art, below will be to implementation method
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the dimensional structure diagram of the electronic equipment of first embodiment of the invention；
Fig. 2 is the three-dimensional exploded view of electronic equipment shown in Fig. 1；
Fig. 3 is the generalized section of button module shown in Fig. 2；
Fig. 4 is the circuitry block schematic diagram of electronic equipment of the present invention；
Fig. 5 is the structural representation of the fingerprint sensor of fingerprint identification device shown in Fig. 3-4；
Fig. 6 is the fingerprint identification method flow chart of the fingerprint identification device that Fig. 1-4 is applied to electronic equipment；
Fig. 7 is the touch operation schematic diagram that electronic equipment receives touching object；
Fig. 8 is the image that correspondence touches the reflection light composition that main body optical sensor is received；
Fig. 9 is the first chromaticity coordinate axle schematic diagram of image shown in Fig. 8；
Figure 10 is the first chromaticity coordinate axle schematic diagram of the touching object for forging finger；
Figure 11 is the second chromaticity coordinate axle schematic diagram of actual fingerprint；
Figure 12 is the second chromaticity coordinate axle schematic diagram for forging fingerprint.
Main element symbol description
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described implementation method is only a part of implementation method of the invention, rather than whole realities
Apply mode.Based on the implementation method in the present invention, those of ordinary skill in the art institute under the premise of creative work is not paid
The every other implementation method for obtaining, belongs to the scope of protection of the invention.
It should be noted that the term for using in embodiments of the present invention be only merely for description particular implementation
Purpose, and it is not intended to be limiting the present invention.Singulative used in embodiment of the present invention and appended claims
" one kind ", " described " and " being somebody's turn to do " is also intended to include most forms, unless context clearly shows that other implications.Should also manage
Solution, term "and/or" used herein refers to and can comprising one or more associated any or all of project listed
Can combination.In addition, term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing etc. be for
Different objects are distinguished, rather than for describing particular order.Additionally, term " comprising " and " having " and their any deformations,
It is intended to cover non-exclusive including.For example contain the process of series of steps or unit, method, system, product or set
It is standby to be not limited to the step of having listed or unit, but alternatively also include the step of not listing or unit, or alternatively
Also include for these processes, method, product or other intrinsic steps of equipment or unit.
The electronic equipment that embodiment of the present invention is related to can be any equipment for possessing communication and store function, for example：
Panel computer, mobile phone, electronic reader, remote control, personal computer (Personal Computer, PC), notebook computer,
The smart machine with network function such as mobile unit, Web TV, wearable device.
Fig. 1 is referred to, Fig. 1 is the dimensional structure diagram of the first embodiment of electronic equipment of the present invention 100.This embodiment party
In formula, the electronic equipment 100 is mobile phone.Specifically, the electronic equipment 100 has display surface 101 and positioned at the display
The back side 102 of face opposite side.The display surface 101 includes generally rectangular shaped viewing area 103 and positioned at the viewing area
The non-display area 104 of 103 peripheries.Further, the electronic equipment 100 is located at the non-display area of the downside of the viewing area 103
104 are additionally provided with button module 120.Present embodiment, the button module 120 includes fingerprint identification device 130, the fingerprint
Sensor 130 is capacitive fingerprint sensing device, and is arranged in the perforate of the protecgulum of the electronic equipment 100.
Fig. 2 is referred to, Fig. 2 is the three-dimensional exploded view of electronic equipment 100 shown in Fig. 1.The electronic equipment 100 also includes preceding
Lid (cover lens) 111, touch-control display module 112, center 113, frame 114, main circuit board 115 and bonnet 116.It is described
Protecgulum 111, the touch-control display module 112, the center 113, the main circuit board 115 and the bonnet 116 are from top to bottom
Sequentially set, the frame 114 is located on outside the touch-control display module 112, the center 113, the main circuit board 115
Enclose, the touch-control display module 112, the center 113 and the main circuit board 115 are housed and the protecgulum 111, the bonnet
116 and the receiving space that surrounds of the frame 114 in.
The protecgulum 111 can include transparency carrier 117 and be covered at least part of screening in the inner side of the transparency carrier 117
Cover layer 118.The transparency carrier 117 can be the one of which base in glass substrate, sapphire substrate and transparent resin substrate
Plate, but it is not limited to aforesaid substrate.The transparency carrier 117 can be divided into the perspective portion 105 of the correspondence viewing area 103 and right
Answer the periphery 106 of the non-display area 104.The perspective portion 105 of the transparency carrier 117 is not provided with the shielding layer 118, institute
The picture for stating the display of touch-control display module 112 can be supplied to user through the perspective portion 105, the transparency carrier 117
The inner side of periphery 106 is provided with shielding layer 118, is carried out for regions such as the periphery wirings to the touch-control display module 112
Block.Preferably, the material of the shielding layer 118 includes ink, and its color can be white or black, but be not limited to
State color.
In present embodiment, the protecgulum 111 also includes the perforate through the transparency carrier 117, and the perforate is set
In the periphery 106, specifically, the perforate is located at the middle position of the periphery 106 of the downside of the perspective portion 105.Institute
The fingerprint identification device 130 for stating button module 120 is exposed by the perforate so that user can pass through and be pressed described in tap operation
Key module 120 and the use fingerprint identification device 130.
Fig. 3 is referred to, Fig. 3 is the structural representation of the fingerprint identification device 130 of button module shown in Fig. 2 120.The finger
Line identifying device 130 includes substrate 135, fingerprint sensor 131, live body sensor 132, retainer ring 134 and protective layer 133.This
In implementation method, the fingerprint sensor 131 is packaged together with the live body sensor 132.Specifically, the fingerprint sensing
Device 131 may be contained within the substrate 135 with the live body sensor 132, and the retainer ring 135 is sheathed on the fingerprint sensing
The periphery of device 131, the live body sensor 132 and the substrate 135, the protective layer 133 is covered in the retainer ring 134
Side by the fingerprint sensor 131, the live body sensor 132 so that be packaged in the protective layer 133, the retainer ring 134
And in the receiving space that surrounds of the substrate 135.The live body sensor 133 can be optical profile type live body sensor, and it can be with
Signal projector and signal receiver (non-label) including being respectively arranged at the both sides of the fingerprint sensor 131.
The fingerprint sensor 131 is used to detect the operating body (such as finger of user) applied to the electronic equipment 100
Touch or finger print information.Wherein, the detection after working condition is entered of the fingerprint sensor 131 is applied to the fingerprint
Touch action or fingerprint characteristic on sensor 131, the fingerprint sensor 131 are not performed when in a dormant state
Detection is applied to the action of the touch action or fingerprint characteristic on the fingerprint sensor 131.Specifically, the fingerprint sensor
131 can be capacitive fingerprint sensing device, but be not limited to capacitive fingerprint sensing device.
Whether the operating body that the live body sensor 132 is used to detect the operation electronic equipment 100 is live body.The work
Body sensor 132 can also be set on the fingerprint sensor 131, be further used for fixing and protecting the fingerprint sensor
131.Specifically, the live body sensor 132 can be heart rate sensor, blood pressure sensor, body temperature trans, blood oxygen sensing
At least one in device, EGC sensor.Wherein, the heart rate sensor can be optical profile type heart rate sensor but be not limited to light
Formula heart rate sensor.In a preferred embodiment, the fingerprint sensor 131 and live body sensor 132 can be
It is integrated with the biometric sensor component of fingerprint sensor and two kinds of sensors of heart rate sensor.
In the present embodiment, the protective layer 133 is a cover sheet, and the cover sheet can be adhered to institute by colloid
State the upper surface of fingerprint sensor 131.The cover sheet can include transparent base (such as sapphire substrate) and as described in being arranged at
Dyed layer (such as black or white ink layer) on the inside of transparent base.
Further, Fig. 4 is referred to, Fig. 4 is the circuitry block schematic diagram of electronic equipment of the present invention 100, and the electronics sets
Standby 100 also include the detection detection module 160 of module 150 and second of processor 140, first.Wherein, the first detection module 150 is used
In the attribute of detection touching object 20, the second detection module 160 is used to recognize the lines information of the touching object.Wherein,
One detection module 150 includes the fingerprint sensor 131 and fingerprint sensing drive circuit 151；Second detection module 160 includes work
Body sensor 132 senses drive circuit 161 with live body.It is appreciated that fingerprint sensing drive circuit 151 drives electricity with live body sensing
Road 161 is arranged on the main circuit board 115.
Specifically, the processor 140 electrically connects the fingerprint sensor 131 with the live body sensor 132.The place
Reason device 140 is used to receive the detection signal of the output of live body sensor element 132, and judges whether according to the detection signal
There is live body user to operate the fingerprint identification device 130；The processor 140 also controls the fingerprint to pass according to judged result
Sensor 131 enters working condition or resting state, wherein, the fingerprint sensor 131 is detected after working condition is entered and applied
Touch action or fingerprint characteristic on to the fingerprint sensor 131, the fingerprint sensor 131 when in a dormant state,
Perform detection is not applied to the action of the touch action or fingerprint characteristic on the fingerprint sensor 131.
Further, processor 140 includes the first treatment module 141 and second processing module 142, wherein, the first treatment mould
Group 141 is used to carry out data process＆analysis for the information in fingerprint of the output of fingerprint sensor 131, and then obtains touch objects
The finger print information of body 20.The second processing module 142 is used for the color of the touch main body 20 obtained for live body sensor 132
Information carries out Treatment Analysis, and then judges to touch the attribute of main body 20, and exports corresponding indication signal.Specifically, second
Treatment module 142 includes that the first colour model 14a, the second colour model 14b, first are compared module 14c and compare module with second
14d。
First colour model 14a is used to analyze the touch corresponding color information of main body 20 and export first color
Plain coordinate, wherein, the first colour model of institute is RGB color model.Wherein, the first pigment coordinate include red wavelength curve,
Green wavelength curve and blue wavelength curve.
First compares module 14c is used for the red wavelength curve and the green wavelength curve, blue wavelength curve
It is compared and difference output control signal, when red wavelength curve and blue wavelength curve and the blue wavelength curve phase
When mutually overlapping, the first pigment coordinate is represented not in first threshold Z, first compares module 14c then exports the first control signal；When
When the difference of red wavelength curve and blue wavelength curve and the blue wavelength curve is in first threshold Z, first compares mould
Group 14c exports the second control signal.
Second colour model 14b is used to compare first pigment when module 14c exports the second control signal when first
Coordinate Conversion is the second pigment coordinate.The second colour model 14b is cmyk color model, YUV colour models, CIE XYZ
Colour model or HSV colour models.
Second compares module 14d for the second pigment coordinate to be compared with Second Threshold, when second pigment is sat
Mark is in Second Threshold scope, and described second compares module 14d exports the 3rd control signal, and the 3rd described control is believed
Indication signal number described in.
Refer to Fig. 5, the structural representation of Fig. 5 fingerprint sensors 131 of the fingerprint identification device 130 as shown in Figure 3-4
Figure.The fingerprint sensor 131 includes multiple pixels 1311.When the fingerprint identification device 130 is with the first precision acquisition fingerprint
During information, the multiple pixel 1311 gathers fingerprint and exports fingerprint signal, and the processor 140 is according to the multiple picture
The fingerprint signal of the output of element 1311 obtains the first finger print information, and first finger print information and preset fingerprint information are compared,
Controlled whether by fingerprint authentication with according to comparison result.
In one embodiment, it is the multiple when the fingerprint identification device 130 is with the second precision acquisition finger print information
Pixel 1311 is divided into multiple pixel groups 1312, and each pixel groups 1312 includes some pixels 1311 being disposed adjacent, each picture
Element group at least one of 1312 pixel 1311 collection fingerprint and export fingerprint signal (such as only one pixel 1311 output fingerprint letter
Number, other pixel dormancy without output fingerprint signal), the processor 140 according to the multiple pixel groups 1312 export it is many
Individual fingerprint signal obtains the second finger print information, and second finger print information is considered as into common touching signals and controls execution described
The corresponding control function of common touching signals.
It is described many when the fingerprint identification device 130 is with the second precision acquisition finger print information in another embodiment
Individual pixel 1311 is divided into multiple pixel groups 1312, all in each pixel groups 1312 under the control of the processor 140
Pixel 1311 is applied in drive signal simultaneously and (all pixels 1311 of the pixel groups 1312 are exported while exporting fingerprint signal
Identical fingerprint signal), the processor 140 obtains the second fingerprint according to the fingerprint signal that the multiple pixel groups 1312 are exported
Second finger print information is simultaneously considered as common touching signals and controls to perform the corresponding control of the common touching signals by information
Function.
Further, in one embodiment, after the fingerprint sensor 131 enters working condition, the processor
140 also control to apply pumping signal or ground signalling to coordinate the fingerprint sensor 131 to recognize to the live body sensor 132
Touch action or fingerprint characteristic.It is appreciated that the pumping signal can be radiofrequency signal.
Figure Fig. 6 is referred to, its fingerprint recognition side that the fingerprint identification device 130 of electronic equipment 100 is applied to by Fig. 1-4
Method flow chart.
Step S1：Obtain the corresponding color information of touching object 20.Specifically, the step is by the second detection module 160
Live body sensor 132 and live body sensing drive circuit 161 perform.
As shown in fig. 7, the touch operation schematic diagram of its to be electronic equipment 100 receive touching object 20, when finger conduct
The contact protection of touching object 20 layer 133, live body sensing drive circuit 161 drives live body sensor 132 to launch to touching object 20
Light.After light reflects via touching object 20, live body sensor 132 can receive the color information of corresponding reflection light,
And it is sent to the first treatment module 141.
As shown in Figure 8, it is the image of the reflection light composition received for 20 live body sensor of correspondence touch main body 132
30.The complete image of the correspondence touching object 20 is divided into multiple subgraphs 301 by the first treatment module 141 (Fig. 4).
Certainly, ground is changed, in other embodiment of the present invention, can be obtained including part zone line and part side
The image in edge region is divided into multiple subgraphs, is not limited thereto.
Step S2：Corresponding first pigment coordinate in the color information is obtained, when the first pigment coordinate is not
In one threshold range, then the attribute of the touching object is live body and output indication signal.The step specifically has the first treatment mould
The first colour model 14a in group 141 compares module 14c execution with first.
First colour model 14a is directed to those subgraphs 301, analyzes its color information and exports first pigment and sits
Mark, wherein, the first colour model of institute is RGB color model.Wherein, the first pigment coordinate includes red wavelength curve, green
Wavelength curve and blue wavelength curve.
As shown in figure 9, it is the first chromaticity coordinate axle schematic diagram of image as shown in Figure 8 30.The X of the first chromaticity coordinate axle
The resolution ratio of axial coordinate axle representative image, Y-axis reference axis represents pixel gray level.Curve R represents red wavelength, and curve G represents green
Color wavelength, curve B represents blue wavelength.The resolution ratio of foregoing X-axis reference axis can be 640x480, and it also can be 1080x720, can
Correspondence resolution ratio is selected according to actual demand cuts size.
Due to the live finger as touching object 20 colour of skin can be produced to change during protective layer 133 is pressed against,
That is, the blood of a finger part can be stayed at finger area pressed, remaining blood can then flow to from area pressed toward surrounding
Outside area pressed so that finger can form obvious colour of skin change in pressing.Therefore due to finger part blood stay in by
Factor at intermediate pressure section, as shown in Figure 10, in Y-axis reference axis numerically, red wavelength curve R can be significantly hotter than green wavelength
Curve G and blue wavelength curve B.
Based on above-mentioned principle, if being pressed against on the button module 120 with forging fingerprint, the first chromaticity coordinate axle it is red
Color wavelength curve R can not changed significantly.Refer to shown in Figure 10, be as forge finger touching object 20 first
Chromaticity coordinate axle schematic diagram.By be will be obvious in figure, because forging fingerprint does not have the characteristic of blood flow, also without the colour of skin
Change, so together with red wavelength curve R almost overlaps with green wavelength curve G, blue wavelength curve B, and then can sentence
Break to forge fingerprint.
Further, first compares module 14c by the red wavelength curve in the first chromaticity coordinate and institute's green
The control signal that wavelength curve, blue wavelength curve are compared and export respectively.Specifically, when red wavelength curve and indigo plant
The color wavelength curve and its blue wavelength curve is overlapped or difference is in first threshold scope, represents the first pigment coordinate
Not in the range of first threshold, the first control signal is exported, that is to say touching object 20 to forge fingerprint；When red wavelength curve
When difference with blue wavelength curve and the blue wavelength curve exceedes first threshold scope, the second control signal is exported,
It is that touching object 20 is true live finger.In present embodiment, first threshold Z is：10<Z<100.
Preferably, it is the second pigment coordinate by the first pigment Coordinate Conversion, relatively the second pigment coordinate and the
Two threshold ranges, when the second pigment coordinate is in Second Threshold scope, export the 3rd control signal, the 3rd described control
Signal is used as described indication signal.
It is the second pigment mark by the first pigment Coordinate Conversion.The second colour model 14b be cmyk color model,
YUV colour models, CIE XYZ colour models or HSV colour models.
Second compares module 14d for the second pigment coordinate to be compared with Second Threshold, when second pigment is sat
Mark is in Second Threshold scope, and described second compares module 14d exports the 3rd control signal.
Refer to Figure 11 and Figure 12, Figure 11 and Figure 12 is respectively the second chromaticity coordinate axle schematic diagram of actual fingerprint of the present invention
With the second chromaticity coordinate axle schematic diagram for forging fingerprint.Second compares module 14d compares whether the second chromaticity coordinate axle meets pre-
If the second threshold values W, true and false fingerprint is judged with this.Wherein, Second Threshold scope W is：10<W<100.
Consequently, it is possible to if forge finger designs false capilary according to the first colour model (red bluish-green color model), though
Pseudo- can so produce red wavelength curve R apparently higher than green wavelength curve G and the situation of blue wavelength curve B, but still can be by
Whether with default second colour of skin threshold values of the second chromaticity coordinate axle, it is actual fingerprint to verify to proving program 153.If after conversion
Second chromaticity coordinate axle meets the second threshold range, then judge that finger is actual fingerprint.If the second chromaticity coordinate axle does not meet
Two colour of skin threshold values, then judge finger as fingerprint is forged.And then improve precision.
Step S3：The fingerprint image of the touching object 20 is sensed according to indication signal.By the second control signal or
Three control signals are exported to the second detection module 150 as indication signal, and the second detection module 150 obtains the finger for touching main body 20
Print image information, second processing module 142 is analyzed treatment for information in fingerprint, obtains the fingerprint for touching main body 20.
In sum, the driving method and associated electronic device 100 of the electronic equipment 100 that the present invention is provided, by described
Be acquired for the information in fingerprint by processor 140, the first detection module 150 and the second detection module 160
And treatment, it is live body people's fingerprint that can accurately judge that fingerprint to be identified is.
The first detection module 150 includes the fingerprint sensor 131, and the second detection module 160 includes described
Live body sensor 132, the first detection module 150 and the second detection module 160 obtain the information in fingerprint simultaneously
Transmit to the processor 140, the processor 140 is provided with the first treatment module 141 and the second processing module
142, it is described first treatment module 141 for the fingerprint sensor 131 output information in fingerprint carry out data processing with
Analysis, and then the finger print information of touching object 20 is obtained, the second processing module 142 is used to be obtained for live body sensor 132
The color information of the touch main body 20 for taking carries out Treatment Analysis, and then judges to touch the attribute of main body 20, and exports corresponding
The indication signal, the electronic equipment 100 determines to operate the button module 120 to live by detecting monologue story-telling with gestures indication signal
Body people.
The driving method and associated electronic device 100 of the electronic equipment 100 provided compared to prior art, the present invention, lead to
Cross set the second processing module 142 pairs it is described touch main body 20 color information carry out Treatment Analysis, can accurately judge
It is live body people's fingerprint that fingerprint to be identified is, can be used to identifying user identity, to ensure the security of the electronic equipment 100, can
Prevent fingerprint film and other fingerprints from pretending to be.
Claims (14)
1. a kind of fingerprint identification device, including the first detection module and the second detection module, wherein, the first detection module is used
In the attribute of detection touching object, the second detection module is used to recognize the lines information of the touching object, it is characterised in that：
The first detection module obtains the color information of the touching object for pressing on the fingerprint identification device；
The color information includes the first pigment coordinate, when the first pigment coordinate is not in the range of first threshold, then described
The attribute of touching object is live body and output indication signal to the second detection module；
The second detection module starts and senses the fingerprint image of the touching object according to indication signal.
2. according to the fingerprint identification device described in claim 1, it is characterised in that the second detection module is capacitance type fingerprint
Detection.
3. fingerprint identification device according to claim 1, it is characterised in that the first detection module includes the first color
Model, first colour model is used to analyze the touch image and export the first pigment coordinate, wherein, institute first
Colour model is RGB color model.
4. fingerprint identification device according to claim 3, it is characterised in that the first detection module also includes the first ratio
Compared with module, the first pigment coordinate includes red wavelength curve, green wavelength curve and blue wavelength curve, and described first compares mould
Group is for control that the red wavelength curve and institute green wavelength curve, blue wavelength curve are compared and are exported respectively
Signal processed, when red wavelength curve and blue wavelength curve and its overlapped blue wavelength curve, represents the first pigment
Not in the range of first threshold, first compares module then exports the first control signal to coordinate；When red wavelength curve and blue ripple
When the difference of curve long and the blue wavelength curve is in the range of first threshold, first compares module output the second control letter
Number.
5. fingerprint identification device according to claim 4, it is characterised in that the first detection module also includes the second color
Color model, when the first detection module exports the second control signal, the second color module turns the first pigment coordinate
It is changed to the second pigment mark.
6. fingerprint identification device according to claim 5, it is characterised in that the first detection module also includes the second ratio
Compared with module, described second compares module is compared the second pigment coordinate with Second Threshold, at the second pigment coordinate
In Second Threshold scope, described second compare module export the 3rd control signal, and using the 3rd described control signal as
Described indication signal.
7. fingerprint identification device according to claim 6, it is characterised in that second colour model is cmyk color mould
Type, YUV colour models, CIE XYZ colour models or HSV colour models.
8. the fingerprint identification device according to claim 1-7 any one, it is characterised in that the first detection module bag
Live body sensor is included, the second detection module includes fingerprint sensor, the live body sensor and the fingerprint sensor phase
Mutually it is independently arranged, wherein, the live body sensor is used to obtain the color information, and the fingerprint sensor is used to receive described
Fingerprint image.
9. fingerprint identification device according to claim 8, it is characterised in that the fingerprint identification device also includes treatment
Device, the processor is used to receive the color information and the fingerprint image, and the first pigment coordinate described in comparative analysis
Whether in the first threshold scope, and whether the second pigment coordinate is analyzed in the Second Threshold scope.
10. a kind of fingerprint identification method, including step：
Obtain the touch image of touching object；
First color and its corresponding first pigment coordinate for touching image is obtained, when the first pigment coordinate is not the
In one threshold range, then the attribute of the touching object is live body and output indication signal；
The fingerprint image of the touching object is sensed according to indication signal.
11. according to the fingerprint identification method described in claim 10, it is characterised in that detect fingerprint image using capacitance variations.
12. fingerprint identification methods according to claim 10, it is characterised in that analysis is described to be touched image and export institute
The first pigment coordinate is stated, wherein, the first colour model of institute is RGB color model.
13. fingerprint identification methods according to claim 12, it is characterised in that：
First pigment coordinate includes red wavelength curve, green wavelength curve and blue wavelength curve；
The control that the red wavelength curve and institute green wavelength curve, blue wavelength curve are compared and exported respectively
Signal, when red wavelength curve and blue wavelength curve and its overlapped blue wavelength curve, represents that the first pigment is sat
Mark exports the first control signal not in the range of first threshold；When red wavelength curve and blue wavelength curve and the blueness
When the difference of wavelength curve is in the range of first threshold, the second control signal is exported.
14. fingerprint identification methods according to claim 13, it is characterised in that when the first detection module output second is controlled
It is the second pigment coordinate by the first pigment Coordinate Conversion during signal, compares the second pigment coordinate and Second Threshold model
Enclose, when the second pigment coordinate is in Second Threshold scope, export the 3rd control signal, the 3rd described control signal conduct
Described indication signal.
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| CN110543864A (en) * | 2018-11-30 | 2019-12-06 | 神盾股份有限公司 | Sensor and fake finger identification method |
| CN110928216A (en) * | 2019-11-14 | 2020-03-27 | 深圳云天励飞技术有限公司 | Artificial intelligence device |
| CN110928216B (en) * | 2019-11-14 | 2020-12-15 | 深圳云天励飞技术有限公司 | Artificial intelligence device |
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