CN106355144A - The fingerprint image acquisition method, device and mobile terminal - Google Patents
The fingerprint image acquisition method, device and mobile terminal Download PDFInfo
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- CN106355144A CN106355144A CN201610737236.2A CN201610737236A CN106355144A CN 106355144 A CN106355144 A CN 106355144A CN 201610737236 A CN201610737236 A CN 201610737236A CN 106355144 A CN106355144 A CN 106355144A
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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
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Abstract
The invention discloses a method, device and mobile terminal for collecting fingerprint image. The method comprises the following steps: determine the area of finger with or without liquid; obtain the corresponding value of the first calibration parameters from the liquid region, and obtain the corresponding value of the second calibration parameters from region without liquid; acquire fingerprint image according to the first calibration parameter values and second calibration parameters; This method improve the accuracy of fingerprint image acquisition, collection efficiency and the accuracy of fingerprint identification.
Description
Technical field
The present invention relates to technical field of mobile terminals, more particularly, to a kind of acquisition method of fingerprint image, device and shifting
Dynamic terminal.
Background technology
With the fast development of mobile terminal technology and image processing techniquess, fingerprint identification technology is as a kind of degree of safety
Higher technology of identification has been applied to multiple fields, is not only personal privately owned device and brings safeguard protection, more carries to user
Come using upper convenience.For example, by fingerprint identification technology to the application software on mobile terminal or mobile terminal or file
It is encrypted or unlocks, be that user brings good experience.
However, needing user to contact in mobile terminal by finger when gathering the fingerprint image of user by fingerprint module
The surface of fingerprint module, to capture the finger print information of user, but inevitably, the finger of user is moist larger sometimes
The situation of (finger as user belongs to moist fingerprint, or contains liquid etc. in the finger of user).In correlation technique, no matter finger
It is moist fingerprint or finger surface has liquid, after user's finger contacts fingerprint module, all obtain identical calibration parameter
Value carries out the collection of fingerprint image, so can reduce the accuracy rate of the fingerprint image of collection, leads to fingerprint image and registered fingerprint
Image mismatches, and reduces the accuracy rate of fingerprint recognition.
Content of the invention
The purpose of the present invention is intended at least solve to a certain extent one of above-mentioned technical problem.
For this reason, the first of the present invention purpose is to propose a kind of acquisition method of fingerprint image.The method can improve
The accuracy rate of collection fingerprint image, improves collecting efficiency, and improves the accuracy rate of fingerprint recognition.
Second object of the present invention is to propose a kind of harvester of fingerprint image.
Third object of the present invention is to propose a kind of mobile terminal.
Fourth object of the present invention is to propose another kind of mobile terminal.
For reaching above-mentioned purpose, the acquisition method of the fingerprint image of first aspect present invention embodiment, comprising: determine finger area
In domain containing liquid regions and do not contain liquid regions；Obtain corresponding first calibration parameter value according to described containing liquid regions, and
Obtain corresponding second calibration parameter value according to described without liquid regions；According to described first calibration parameter value and described second
Calibration parameter value carries out the collection of fingerprint image to described finger areas.
The acquisition method of fingerprint image according to embodiments of the present invention is it may be determined that touch the finger areas on fingerprint module
In containing liquid regions and do not contain liquid regions, afterwards, obtain corresponding first calibration parameter value, and root according to containing liquid regions
Obtain corresponding second calibration parameter value according to without liquid regions, finally, according to the first calibration parameter value and the second calibration parameter
Value carries out the collection of fingerprint image to finger areas.I.e. in the gatherer process of fingerprint image, when determination finger areas include containing
Liquid regions and during without liquid regions, by way of the adjustment using local gain parameter, realize not same district to finger
Domain adopts different calibration parameters, gathers corresponding finger-print region according to different calibration parameters, finally by regional simultaneously
Fingerprint image synthesized to obtain the final fingerprint image of this finger, improve collection fingerprint image accuracy rate, improve
Collecting efficiency, and improve the accuracy rate of fingerprint recognition.
According to one embodiment of present invention, described according to described first calibration parameter value with described second calibration parameter value
Described finger areas are carried out with the collection of fingerprint image, comprising: according to described first calibration parameter value collection, contain fluid zone
First fingerprint image in domain, and the second fingerprint image without liquid regions according to described second calibration parameter value collection；
Described first fingerprint image and described second fingerprint image are synthesized to generate the fingerprint image of described finger areas.
According to one embodiment of present invention, described first calibration parameter value includes the first yield value and the first deviant,
Described second calibration parameter value includes the second yield value and the second deviant, and described first yield value is more than the second yield value.
According to one embodiment of present invention, methods described also includes: controls fingerprint module to heat up, described contains liquid to remove
Liquid in body region；Obtain corresponding 3rd calibration parameter value according to the finger areas removing after liquid, and according to described the
The fingerprint image of the finger areas after three calibration parameter value collection described removal liquid.
According to one embodiment of present invention, described control fingerprint module heats up, comprising: increase the work(of described fingerprint module
Rate, so that described fingerprint module heats up；Or, control the corresponding heater element of described fingerprint module that described fingerprint module is carried out
Heating, so that described fingerprint module heats up.
For reaching above-mentioned purpose, the harvester of the fingerprint image of second aspect present invention embodiment, comprising: determining module,
For determine in finger areas containing liquid regions and do not contain liquid regions；Acquisition module, for according to described containing liquid regions
Obtain corresponding first calibration parameter value, and obtain corresponding second calibration parameter value according to described without liquid regions；Collection
Module, for carrying out fingerprint image according to described first calibration parameter value and described second calibration parameter value to described finger areas
Collection.
The harvester of fingerprint image according to embodiments of the present invention, can determine containing in finger areas by determining module
Liquid regions and do not contain liquid regions, acquisition module according to containing liquid regions acquisition corresponding first calibration parameter value, and according to
Obtain corresponding second calibration parameter value without liquid regions, acquisition module is according to the first calibration parameter value and the second calibration parameter
Value carries out the collection of fingerprint image to finger areas.I.e. in the gatherer process of fingerprint image, if finger areas are included containing liquid
Body region and during without liquid regions, by way of the adjustment using local gain parameter, realizes zones of different to finger
Using different calibration parameters, corresponding finger-print region is gathered according to different calibration parameters, finally by regional simultaneously
Fingerprint image is synthesized to obtain the final fingerprint image of this finger, improves the accuracy rate of collection fingerprint image, improves
Collecting efficiency, and improve the accuracy rate of fingerprint recognition.
According to one embodiment of present invention, described acquisition module includes: collecting unit, for according to the described first calibration
Described the first fingerprint image containing liquid regions of parameter value collection, and do not contain liquid according to described second calibration parameter value collection
Second fingerprint image of body region；Image composing unit, for entering described first fingerprint image and described second fingerprint image
Row synthesis is to generate the fingerprint image of described finger areas.
According to one embodiment of present invention, described first calibration parameter value includes the first yield value and the first deviant,
Described second calibration parameter value includes the second yield value and the second deviant, and described first yield value is more than the second yield value.
According to one embodiment of present invention, described device also includes: control module, for controlling fingerprint module to heat up,
To remove the described liquid containing in liquid regions；Wherein, described acquisition module is additionally operable to: according to the finger areas removing after liquid
Obtain corresponding 3rd calibration parameter value；Described acquisition module is additionally operable to: goes according to described 3rd calibration parameter value collection
Fingerprint image except the finger areas after liquid.
According to one embodiment of present invention, described control module includes: power increases unit, for increasing described fingerprint
The power of module, so that described fingerprint module heats up；Or, control unit, for controlling the corresponding heating of described fingerprint module
Device heats to described fingerprint module, so that described fingerprint module heats up.
For reaching above-mentioned purpose, the mobile terminal of third aspect present invention embodiment, comprising: second aspect present invention embodiment
Fingerprint image harvester.
Mobile terminal according to embodiments of the present invention, can be determined in finger areas by the determining module in harvester
Containing liquid regions with without liquid regions, acquisition module obtains corresponding first calibration parameter value according to containing liquid regions, and root
Obtain corresponding second calibration parameter value according to without liquid regions, acquisition module is according to the first calibration parameter value and the second calibration ginseng
Numerical value carries out the collection of fingerprint image to finger areas.I.e. in the gatherer process of fingerprint image, if finger areas include containing
Liquid regions and during without liquid regions, by way of the adjustment using local gain parameter, realize not same district to finger
Domain adopts different calibration parameters, gathers corresponding finger-print region according to different calibration parameters, finally by regional simultaneously
Fingerprint image synthesized to obtain the final fingerprint image of this finger, improve collection fingerprint image accuracy rate, improve
Collecting efficiency, and improve the accuracy rate of fingerprint recognition.
For reaching above-mentioned purpose, the mobile terminal of fourth aspect present invention embodiment, comprising: one or more processor；
Memorizer；One or more program, one or more of program storages in which memory, when by one or
Proceed as follows during the multiple computing device of person: determine in finger areas containing liquid regions and do not contain liquid regions；According to
Described containing liquid regions obtain corresponding first calibration parameter value, and according to described without liquid regions obtain corresponding second school
Quasi- parameter value；Fingerprint image is carried out to described finger areas according to described first calibration parameter value and described second calibration parameter value
Collection.
Mobile terminal according to embodiments of the present invention, can first determine in finger areas containing liquid regions and do not contain fluid zone
Domain, afterwards, can obtain corresponding first calibration parameter value according to containing liquid regions, and corresponding according to obtaining without liquid regions
Finger areas finally, are carried out fingerprint image according to the first calibration parameter value and the second calibration parameter value by the second calibration parameter value
Collection.I.e. in the gatherer process of fingerprint image, if finger areas include containing liquid regions and do not contain liquid regions, lead to
Cross by the way of the adjustment of local gain parameter, realize the zones of different to finger and adopt different calibration parameters, root simultaneously
Gather corresponding finger-print region according to different calibration parameters, finally synthesized the fingerprint image of regional to obtain this hands
The final fingerprint image referring to, improves the accuracy rate of collection fingerprint image, improves collecting efficiency, and improve fingerprint recognition
Accuracy rate.
The aspect that the present invention adds and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and easy to understand, wherein:
Fig. 1 is the flow chart of the acquisition method of fingerprint image according to an embodiment of the invention；
Fig. 2 is the flow chart of the acquisition method of fingerprint image in accordance with another embodiment of the present invention；
Fig. 3 is the structural representation of the harvester of fingerprint image according to an embodiment of the invention；
Fig. 4 is the structural representation of the harvester of the fingerprint image according to one specific embodiment of the present invention；
Fig. 5 is the structural representation of the harvester of the fingerprint image according to another specific embodiment of the present invention；
Fig. 6 is the structural representation of the harvester of the fingerprint image according to another specific embodiment of the present invention；
Fig. 7 is the structural representation of the harvester of the fingerprint image according to another specific embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings acquisition method, device and the mobile terminal of the fingerprint image of the embodiment of the present invention are described.
Fig. 1 is the flow chart of the acquisition method of fingerprint image according to an embodiment of the invention.It should be noted that this
The acquisition method of the fingerprint image of inventive embodiments can be applicable to the harvester of fingerprint image, the harvester of this fingerprint image
Can be configured in mobile terminal.It is appreciated that can have fingerprint module in this mobile terminal to realize by fingerprint recognition
The functions such as encrypting fingerprint, unblock, payment.Wherein, this mobile terminal can be mobile phone, panel computer, palm PC, individual digital
Assistant etc. has the hardware device of various operations.
As shown in figure 1, the acquisition method of this fingerprint image may include that
S110, determine in finger areas containing liquid regions and do not contain liquid regions.
It should be noted that the acquisition method of the fingerprint image of the embodiment of the present invention can be to the fingerprint image of pressure fingerprint
It is acquired, can also be that the fingerprint image to general fingerprint is acquired, the present invention is not specifically limited to this.Wherein, when
The acquisition method of the fingerprint image of the embodiment of the present invention is applied to the fingerprint image of pressure fingerprint is acquired, i.e. fingerprint module
In containing pressure elements with realize pressure fingerprint function when, the operation of above-mentioned touch can be that pressing touches, and for example, user presses
Pressure touches fingerprint module；When the acquisition method of the fingerprint image of the embodiment of the present invention is applied to the fingerprint image of general fingerprint is entered
Row collection, do not contain pressure elements in fingerprint module, be now accomplished that general fingerprint acquisition function when, above-mentioned touch
Operation is common touch, if do not used pressure to be directly put into finger on the surface of fingerprint module.
It is appreciated that in the fingerprint identification process of fingerprint module in mobile terminal, fingerprint image is being carried out to user's finger
Collection when, need first fingerprint module to be calibrated to obtain corresponding calibration parameter, and gathered according to this calibration parameter
The fingerprint image of user's finger.Finger due to user sometimes can contain liquid, so, in order to ensure to gather fingerprint image
The accuracy rate of picture, in trigger event calibration parameter acquisition is detected, currently triggers the event needing to obtain calibration parameter
When, can determine whether now to touch whether the finger areas in fingerprint module surface are included containing liquid regions with without liquid regions.
As a kind of example, finger areas that above-mentioned judgement touches in fingerprint module surface whether include containing liquid regions and
The process that implements without liquid regions can be as follows: can first obtain the capacitance present value of fingerprint module, and calculate capacitance present
Value and the difference of predetermined capacitive reference value, if difference is in preset range, judge to touch in the finger on fingerprint module surface
Region includes liquid regions and does not contain liquid regions, that is, judge now to touch the finger in fingerprint module surface and contained liquid
Region and do not contain liquid regions.
Wherein, in an embodiment of the present invention, above-mentioned preset range can be a value range, touch in finger for instruction
The whether existing liquid regions of finger areas on stricture of vagina module surface have a limit value of dry finger-print region, for example, above-mentioned difference again
When in this preset range, can determine that the existing liquid regions of this finger areas have dry finger-print region again；When above-mentioned difference is not at this
In preset range, and when this difference is more than the maximum in this preset range, can determine whether that this touches in the handss on fingerprint module surface
Referring to region is without liquid regions, and that is, this finger is dryness finger, and finger areas do not have liquid；When above-mentioned difference is not pre- at this
If in scope, and when this difference is less than the minima in this preset range, can determine whether that this touches in the finger on fingerprint module surface
Region is containing liquid regions, and that is, this finger is wet finger, and that is, this finger is higher containing amount of liquid, has such as just washed finger of handss etc..
Specifically, the finger areas in fingerprint module surface are existing has without fluid zone containing liquid regions again judging to touch
The capacitance size of zones of different in finger areas during domain, can be detected by fingerprint module, handss are determined according to capacitance size
Refer to region in containing liquid regions and do not contain liquid regions
S120, obtains corresponding first calibration parameter value according to containing liquid regions, and right according to obtaining without liquid regions
The second calibration parameter value answered.
It is appreciated that the calibration parameter of crawl fingerprint image be mainly adc shift, adc gain and pixel gain,
Wherein, adc shift refers to the side-play amount of digital-to-analogue converter, for example, 56*172 pixel pixel, each point is adopting figure
When have a corresponding value, then be exactly altogether 10752 pixel values, and major part be distributed in the appearance of 0.4-0.8, when
When the numerical value of a lot of points are the same, a scattergram will be formed, shift has several gears, and gear is higher, then pixel
The integral value of scattergram is bigger, and image will show more black；Adc gain refers to the gain of digital-to-analogue converter, and yield value is got over
Greatly, then scattergram will more disperse, and yield value is less, then scattergram will more be concentrated, more disperse if image contrast just
Higher, such as black is more black, and white is whiter.Pixel gain is the gain of pixel, and this is by the shunt capacitance of amplifier
Determine, multiple electric capacity in parallel, and be controlled the number of shunt capacitance by switch, it is more that switch closes, and gain is bigger,
Pixel value is bigger, and signal intensity is stronger.
In the control process of analog-digital converter in fingerprint module, the parameter of pixel gain is typically all to fix in fact
, mainly debug adc shift and adc gain, a position being to adjust whole scattergram, one is to adjust scattergram
Collection neutralization deployment conditions, and everyone finger is different, needs different calibration parameters to debug collection image.
For this reason, being based on above-mentioned characteristic, the present invention combines whether the finger areas judging to touch in fingerprint module surface include
Judged result containing liquid regions with without liquid regions, respectively in finger areas, zones of different obtains different calibration parameters
Value, such as obtains corresponding first calibration parameter value according to containing liquid regions, and obtains corresponding second according to without liquid regions
Calibration parameter value.Wherein, in one embodiment of the invention, the first calibration parameter value includes the first yield value and the first skew
Value, the second calibration parameter value includes the second yield value and the second deviant, and the first yield value is more than the second yield value.Because,
When fingerprint module surface does not have liquid, when user's finger acts on fingerprint module, the capacitance variations of fingerprint module are big, corresponding
The yield value for gathering fingerprint image little, when there is liquid on fingerprint module surface, the capacitance variations of fingerprint module are little,
The corresponding yield value for gathering fingerprint image is big.
That is, judging that the finger areas that this touches in fingerprint module surface include containing liquid regions and do not contain liquid
The adjustment mode of local gain parameter during region, can be adopted, be respectively the not same district that this touches the finger in fingerprint module surface
Domain obtain corresponding calibration parameter value so that by using different calibration parameter value gather simultaneously in finger areas containing liquid
Body region and without liquid regions fingerprint image, for example, in finger areas containing liquid regions adopt the first calibration parameter value, handss
Refer to region in without liquid regions adopt the second calibration parameter value.
Finger areas are carried out the collection of fingerprint image according to the first calibration parameter value and the second calibration parameter value by s130.
Specifically, in one embodiment of the invention, first liquid regions can be contained according to the first calibration parameter value collection
The first fingerprint image, and the second fingerprint image without liquid regions according to the second calibration parameter value collection, afterwards, can be by the
One fingerprint image and the second fingerprint image are synthesized to generate the fingerprint image of finger areas.
More specifically, including containing liquid regions with without fluid zone in the finger areas on fingerprint module surface judging to touch
During domain, can contain liquid regions and do not contain by the way of local gain parameter adjustment, by scanning the different region of finger
Liquid regions, and the calibration parameter value according to corresponding to this different region carries out fingerprint image to respective region and grabs respectively
Take, now can obtain the fingerprint image containing liquid regions and the fingerprint image without liquid regions, finally, by this different area
Fingerprint image corresponding to domain is synthesized to obtain the fingerprint image of this finger areas.Thus, in the collection of fingerprint image
Cheng Zhong, by the adjustment using local gain parameter, realizes the zones of different to finger and adopts different calibration parameters, root simultaneously
Gather corresponding finger-print region according to different calibration parameters, finally synthesized the fingerprint image of regional to obtain this hands
The final fingerprint image referring to, improves the accuracy rate of collection fingerprint image, improves collecting efficiency.
The acquisition method of fingerprint image according to embodiments of the present invention, can first determine in finger areas containing liquid regions and
Without liquid regions, afterwards, obtain corresponding first calibration parameter value according to containing liquid regions, and obtain according to without liquid regions
Take corresponding second calibration parameter value, finally, according to the first calibration parameter value and the second calibration parameter value, finger areas are carried out
The collection of fingerprint image.I.e. in the gatherer process of fingerprint image, if finger areas include containing liquid regions and do not contain liquid
During region, by way of the adjustment using local gain parameter, realize the zones of different to finger and adopt different calibration ginsengs
Number, gathers corresponding finger-print region according to different calibration parameters simultaneously, is finally synthesized the fingerprint image of regional
To obtain the final fingerprint image of this finger, improve the accuracy rate of collection fingerprint image, improve collecting efficiency, and improve
The accuracy rate of fingerprint recognition.
Fig. 2 is the flow chart of the acquisition method of fingerprint image in accordance with another embodiment of the present invention.
In order to improve availability and feasibility, in an embodiment of the present invention, if touched in fingerprint module surface
Finger areas are containing liquid regions, then directly carry out fingerprint according to corresponding first calibration parameter value to the whole region of this finger
The collection of image；If touching the finger areas in fingerprint module surface is without liquid regions, directly according to corresponding
Two calibration parameter value carry out the collection of fingerprint image to the whole region of this finger.Specifically, as shown in Fig. 2 this fingerprint image
Acquisition method may include that
S210, when the trigger event of calibration parameter acquisition is detected, judges to touch in the finger area on fingerprint module surface
Whether domain includes containing liquid regions and does not contain liquid regions.
As a kind of example, finger areas that above-mentioned judgement touches in fingerprint module surface whether include containing liquid regions and
The process that implements without liquid regions can be as follows: can first obtain the capacitance present value of fingerprint module, and calculate capacitance present
Value and the difference of predetermined capacitive reference value, if difference is in preset range, judge to touch in the finger on fingerprint module surface
Region includes liquid regions and does not contain liquid regions, that is, judge now to touch the finger in fingerprint module surface and contained liquid
Region and do not contain liquid regions.
S220, if the finger areas touching in fingerprint module surface include containing liquid regions with without liquid regions,
Determine in finger areas containing liquid regions and do not contain liquid regions, and according to containing liquid regions obtain corresponding first calibration ginseng
Numerical value, and obtain corresponding second calibration parameter value according to without liquid regions.
Wherein, in one embodiment of the invention, the first calibration parameter value includes the first yield value and the first deviant,
Second calibration parameter value includes the second yield value and the second deviant, and the first yield value is more than the second yield value.
Finger areas are carried out the collection of fingerprint image according to the first calibration parameter value and the second calibration parameter value by s230.
Specifically, in one embodiment of the invention, first liquid regions can be contained according to the first calibration parameter value collection
The first fingerprint image, and the second fingerprint image without liquid regions according to the second calibration parameter value collection, afterwards, can be by the
One fingerprint image and the second fingerprint image are synthesized to generate the fingerprint image of finger areas.
S240, if touching the finger areas in fingerprint module surface is containing liquid regions, basis obtains containing liquid regions
Take corresponding first calibration parameter value, and gather the fingerprint image of finger areas according to the first calibration parameter value.
Specifically, when judging that the finger areas that this touches in fingerprint module surface are containing liquid regions, do not have in this finger
Have dry region, such as just washed handss finger when, liquid regions can be contained according to this and obtain corresponding first calibration parameter value, and according to
This first calibration parameter value directly gathers the fingerprint image of the whole region of this finger.
S250, if touching the finger areas in fingerprint module surface is without liquid regions, according to without fluid zone
Domain obtains corresponding second calibration parameter value, and gathers the fingerprint image of finger areas according to the second calibration parameter value.
Specifically, when judging that the finger areas that this touches in fingerprint module surface are without liquid regions, that is, in this finger
When there is no wet zone, liquid regions can not contained according to this and obtain corresponding second calibration parameter value, and according to this second calibration ginseng
Numerical value directly gathers the fingerprint image of the whole region of this finger.
In order to lift Consumer's Experience, improve the accuracy rate of collection fingerprint image, further, in an enforcement of the present invention
In example, the acquisition method of this fingerprint image may also include that control fingerprint module heats up, to remove containing the liquid in liquid regions；
Obtain corresponding 3rd calibration parameter value according to the finger areas removing after liquid, and removed according to the 3rd calibration parameter value collection
The fingerprint image of the finger areas after liquid.
That is, the fingerprint module in controllable mobile terminal carries out hyperthermic treatment, to remove containing in liquid regions
Liquid, afterwards, can obtain corresponding 3rd calibration parameter value according to the finger areas removing after liquid, finally, according to the 3rd
Calibration parameter value gathers the fingerprint image of this finger whole region.
As a kind of example, the process that implements that above-mentioned control fingerprint module heats up can be as follows: increases fingerprint module
Power, so that fingerprint module heats up；Or, control fingerprint module corresponding heater element that fingerprint module is heated, so that
Fingerprint module heats up.Wherein, the power increasing fingerprint module can increase this power with identical increase speed, can also be with ladder
The increase speed of change increases this power；Controlling the corresponding heater element of fingerprint module to carry out heating to fingerprint module can be identical
Heating rate's fingerprint module, can be with heating rate's fingerprint module of stepped change, the present invention does not make to this to have
Body limits.
The acquisition method of fingerprint image according to embodiments of the present invention, if touched in the finger areas on fingerprint module surface
It is containing liquid regions, then directly adopting of fingerprint image is carried out to the whole region of this finger according to corresponding first calibration parameter value
Collect, if touching the finger areas in fingerprint module surface is without liquid regions, directly according to the corresponding second calibration ginseng
Numerical value carries out the collection of fingerprint image to the whole region of this finger, adopts different strategies right according to different judged results
The fingerprint image of finger is acquired, and optimizes the acquisition mode of fingerprint image, improves availability and feasibility.
Corresponding with the acquisition method of the fingerprint image that above-mentioned several embodiments provide, a kind of embodiment of the present invention also carries
For a kind of harvester of fingerprint image, due to harvester and above-mentioned several realities of fingerprint image provided in an embodiment of the present invention
The acquisition method applying the fingerprint image of example offer is corresponding, and therefore the embodiment in the acquisition method of aforementioned fingerprint image is also fitted
The harvester of the fingerprint image providing for the present embodiment, is not described in detail in the present embodiment.Fig. 3 is according to the present invention
The structural representation of the harvester of the fingerprint image of one embodiment.As shown in figure 3, the harvester of this fingerprint image is permissible
Comprise determining that module 310, acquisition module 320 and acquisition module 330.
Specifically, it is determined that module 310 can be used for determine finger areas in containing liquid regions and do not contain liquid regions.
Acquisition module 320 can be used for obtaining corresponding first calibration parameter value according to containing liquid regions, and according to without liquid
Body region obtains corresponding second calibration parameter value.Wherein, in one embodiment of the invention, the first calibration parameter value can be wrapped
Include the first yield value and the first deviant, the second calibration parameter value includes the second yield value and the second deviant, and the first gain
Value is more than the second yield value.
Acquisition module 330 can be used for carrying out fingerprint according to the first calibration parameter value and the second calibration parameter value to finger areas
The collection of image.
Specifically, in one embodiment of the invention, as shown in figure 4, this acquisition module 330 may include collecting unit
331 and image composing unit 332.Wherein, collecting unit 331 can be used for according to the first calibration parameter value collection containing liquid regions
First fingerprint image, and the second fingerprint image without liquid regions according to the second calibration parameter value collection.Image composing unit
332 can be used for being synthesized the first fingerprint image and the second fingerprint image to generate the fingerprint image of finger areas.
In order to lift Consumer's Experience, improve the accuracy rate of collection fingerprint image, further, in an enforcement of the present invention
In example, as shown in figure 5, the harvester of this fingerprint image may also include that control module 340.Specifically, control module 340 can
For controlling fingerprint module to heat up, to remove containing the liquid in liquid regions.Wherein, in an embodiment of the present invention, obtain mould
Block 320 can be additionally used in: obtains corresponding 3rd calibration parameter value according to the finger areas removing after liquid.Acquisition module 330 is also
Can be used for: remove the fingerprint image of the finger areas after liquid according to the 3rd calibration parameter value collection.
As a kind of example, as shown in fig. 6, this control module 340 mays include: that power increases unit 341, power increases single
Unit 341 can be used for increasing the power of fingerprint module, so that fingerprint module heats up.
As another kind of example, as shown in fig. 7, this control module 340 mays include: control unit 342, control unit 342
Can be used for controlling fingerprint module corresponding heater element that fingerprint module is heated, so that fingerprint module heats up.
The harvester of fingerprint image according to embodiments of the present invention, can determine containing in finger areas by determining module
Liquid regions and do not contain liquid regions, acquisition module according to containing liquid regions acquisition corresponding first calibration parameter value, and according to
Obtain corresponding second calibration parameter value without liquid regions, acquisition module is according to the first calibration parameter value and the second calibration parameter
Value carries out the collection of fingerprint image to finger areas.I.e. in the gatherer process of fingerprint image, if finger areas are included containing liquid
Body region and during without liquid regions, by way of the adjustment using local gain parameter, realizes zones of different to finger
Using different calibration parameters, corresponding finger-print region is gathered according to different calibration parameters, finally by regional simultaneously
Fingerprint image is synthesized to obtain the final fingerprint image of this finger, improves the accuracy rate of collection fingerprint image, improves
Collecting efficiency, and improve the accuracy rate of fingerprint recognition.
In order to realize above-described embodiment, the invention allows for a kind of mobile terminal, this mobile terminal can include this
The harvester of the fingerprint image of bright any of the above-described embodiment.
Mobile terminal according to embodiments of the present invention, can be determined in finger areas by the determining module in harvester
Containing liquid regions with without liquid regions, acquisition module obtains corresponding first calibration parameter value according to containing liquid regions, and root
Obtain corresponding second calibration parameter value according to without liquid regions, acquisition module is according to the first calibration parameter value and the second calibration ginseng
Numerical value carries out the collection of fingerprint image to finger areas.I.e. in the gatherer process of fingerprint image, if finger areas include containing
Liquid regions and during without liquid regions, by way of the adjustment using local gain parameter, realize not same district to finger
Domain adopts different calibration parameters, gathers corresponding finger-print region according to different calibration parameters, finally by regional simultaneously
Fingerprint image synthesized to obtain the final fingerprint image of this finger, improve collection fingerprint image accuracy rate, improve
Collecting efficiency, and improve the accuracy rate of fingerprint recognition.
In order to realize above-described embodiment, the invention allows for another kind of mobile terminal, comprising: one or more process
Device；Memorizer；One or more program, one or more program storage in memory, at by one or more
Proceed as follows during reason device execution:
S110 ', determine in finger areas containing liquid regions and do not contain liquid regions.
S120 ', obtains corresponding first calibration parameter value according to containing liquid regions, and right according to obtaining without liquid regions
The second calibration parameter value answered.
Finger areas are carried out the collection of fingerprint image according to the first calibration parameter value and the second calibration parameter value by s130 '.
Mobile terminal according to embodiments of the present invention, can first determine in finger areas containing liquid regions and do not contain fluid zone
Domain, afterwards, obtains corresponding first calibration parameter value according to containing liquid regions, and obtains corresponding the according to without liquid regions
Finger areas finally, are carried out fingerprint image according to the first calibration parameter value and the second calibration parameter value by two calibration parameter value
Collection.I.e. in the gatherer process of fingerprint image, if finger areas include containing liquid regions and do not contain liquid regions, pass through
By the way of the adjustment of local gain parameter, realize the zones of different to finger and adopt different calibration parameters, basis simultaneously
Different calibration parameters gathers corresponding finger-print region, is finally synthesized the fingerprint image of regional to obtain this finger
Final fingerprint image, improve collection fingerprint image accuracy rate, improve collecting efficiency, and improve the standard of fingerprint recognition
Really rate.
In describing the invention it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can be expressed or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
In flow chart or here any process described otherwise above or method description are construed as, represent and include
The module of the code of executable instruction of one or more steps for realizing specific logical function or process, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by substantially simultaneously in the way of or in the opposite order, carry out perform function, this should be by the present invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or here logic described otherwise above and/or step, for example, it is possible to be considered as to use
In the order list of the executable instruction realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (system as computer based system, including processor or other can hold from instruction
Row system, device or equipment instruction fetch the system of execute instruction) use, or with reference to these instruction execution systems, device or set
Standby and use.For the purpose of this specification, " computer-readable medium " can any can be comprised, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress using with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following: has the electricity of one or more wirings
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (ram), read only memory
(rom), erasable edit read-only storage (eprom or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (cdrom).In addition, computer-readable medium can even is that the paper that can print described program thereon or other are suitable
Medium, because edlin, interpretation or if necessary with it can then be entered for example by carrying out optical scanning to paper or other media
His suitable method is processed to electronically obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realizing.For example, if realized with hardware, and the same in another embodiment, can use well known in the art under
Any one of row technology or their combination are realizing: have the logic gates for data signal is realized with logic function
Discrete logic, there is the special IC of suitable combinational logic gate circuit, programmable gate array (pga), scene
Programmable gate array (fpga) etc..
Those skilled in the art are appreciated that to realize all or part step that above-described embodiment method carries
Suddenly the program that can be by completes come the hardware to instruct correlation, and described program can be stored in a kind of computer-readable storage medium
In matter, this program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, can be integrated in a processing module in each functional unit in each embodiment of the present invention it is also possible to
It is that unit is individually physically present it is also possible to two or more units are integrated in a module.Above-mentioned integrated mould
Block both can be to be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.Described integrated module is such as
Fruit using in the form of software function module realize and as independent production marketing or use when it is also possible to be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read only memory, disk or CD etc..Although having shown that above and retouching
Embodiments of the invention are stated it is to be understood that above-described embodiment is exemplary it is impossible to be interpreted as the limit to the present invention
System, those of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
Claims (11)
1. a kind of acquisition method of fingerprint image is it is characterised in that comprise the following steps:
Determine in finger areas containing liquid regions and do not contain liquid regions；
Obtain corresponding first calibration parameter value according to described containing liquid regions, and corresponded to according to described acquisition without liquid regions
The second calibration parameter value；
Carry out fingerprint image according to described first calibration parameter value and described second calibration parameter value to described finger areas to adopt
Collection.
2. the method for claim 1 it is characterised in that described according to described first calibration parameter value with described second school
Quasi- parameter value carries out the collection of fingerprint image to described finger areas, comprising:
The first fingerprint image containing liquid regions according to described first calibration parameter value collection, and according to the described second calibration
Described the second fingerprint image without liquid regions of parameter value collection；
Described first fingerprint image and described second fingerprint image are synthesized to generate the fingerprint image of described finger areas.
3. the method for claim 1 is it is characterised in that described first calibration parameter value includes the first yield value and first
Deviant, described second calibration parameter value includes the second yield value and the second deviant, and described first yield value is more than second
Yield value.
4. the method for claim 1 is it is characterised in that methods described also includes:
Fingerprint module is controlled to heat up, to remove the described liquid containing in liquid regions；
Obtain corresponding 3rd calibration parameter value according to the finger areas removing after liquid, and according to described 3rd calibration parameter value
The fingerprint image of the finger areas after collection described removal liquid.
5. method as claimed in claim 4 is it is characterised in that described control fingerprint module heats up, comprising:
Increase the power of described fingerprint module, so that described fingerprint module heats up；Or
Control the corresponding heater element of described fingerprint module that described fingerprint module is heated, so that described fingerprint module liter
Temperature.
6. a kind of harvester of fingerprint image is it is characterised in that include:
Determining module, for determine in finger areas containing liquid regions and do not contain liquid regions；
Acquisition module, for obtaining corresponding first calibration parameter value according to described containing liquid regions, and according to described without liquid
Body region obtains corresponding second calibration parameter value；
Acquisition module, for carrying out to described finger areas according to described first calibration parameter value and described second calibration parameter value
The collection of fingerprint image.
7. device as claimed in claim 6 is it is characterised in that described acquisition module includes:
Collecting unit, for the first fingerprint image containing liquid regions according to described first calibration parameter value collection, and root
According to described the second fingerprint image without liquid regions of described second calibration parameter value collection；
Image composing unit, for being synthesized described first fingerprint image and described second fingerprint image to generate described handss
Refer to the fingerprint image in region.
8. device as claimed in claim 6 is it is characterised in that described first calibration parameter value includes the first yield value and first
Deviant, described second calibration parameter value includes the second yield value and the second deviant, and described first yield value is more than second
Yield value.
9. device as claimed in claim 6 is it is characterised in that described device also includes:
Control module, for controlling fingerprint module to heat up, to remove the described liquid containing in liquid regions；
Wherein, described acquisition module is additionally operable to: obtains corresponding 3rd calibration parameter value according to the finger areas removing after liquid；
Described acquisition module is additionally operable to: according to the described finger removing the finger areas after liquid of described 3rd calibration parameter value collection
Print image.
10. device as claimed in claim 9 is it is characterised in that described control module includes:
Power increases unit, for increasing the power of described fingerprint module, so that described fingerprint module heats up；Or
Control unit, for controlling the corresponding heater element of described fingerprint module that described fingerprint module is heated, so that institute
State fingerprint module to heat up.
A kind of 11. mobile terminals are it is characterised in that include: the adopting of the fingerprint image as any one of claim 6 to 10
Acquisition means.
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| CN108573188A (en) * | 2017-03-07 | 2018-09-25 | 宏碁股份有限公司 | The calibration method of fingerprint acquisition apparatus, electronic device and fingerprint sensing device |
| CN110674686A (en) * | 2019-08-19 | 2020-01-10 | 华为技术有限公司 | Fingerprint identification device and electronic equipment |
| CN112580605A (en) * | 2020-12-31 | 2021-03-30 | 敦泰电子（深圳）有限公司 | Fingerprint image acquisition method and device, electronic equipment and storage medium |
| CN113282317A (en) * | 2019-06-18 | 2021-08-20 | Oppo广东移动通信有限公司 | Optical fingerprint parameter upgrading method and related product |
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| CN108573188A (en) * | 2017-03-07 | 2018-09-25 | 宏碁股份有限公司 | The calibration method of fingerprint acquisition apparatus, electronic device and fingerprint sensing device |
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| CN113282317A (en) * | 2019-06-18 | 2021-08-20 | Oppo广东移动通信有限公司 | Optical fingerprint parameter upgrading method and related product |
| CN113282317B (en) * | 2019-06-18 | 2022-10-21 | Oppo广东移动通信有限公司 | Optical fingerprint parameter upgrading method and related product |
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| CN110674686B (en) * | 2019-08-19 | 2022-08-26 | 华为技术有限公司 | Fingerprint identification device and electronic equipment |
| CN112580605A (en) * | 2020-12-31 | 2021-03-30 | 敦泰电子（深圳）有限公司 | Fingerprint image acquisition method and device, electronic equipment and storage medium |
| CN112580605B (en) * | 2020-12-31 | 2024-05-24 | 敦泰电子（深圳）有限公司 | Fingerprint image acquisition method and device, electronic equipment and storage medium |
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