CN107609540A - A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor - Google Patents
A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor Download PDFInfo
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- CN107609540A CN107609540A CN201710958400.7A CN201710958400A CN107609540A CN 107609540 A CN107609540 A CN 107609540A CN 201710958400 A CN201710958400 A CN 201710958400A CN 107609540 A CN107609540 A CN 107609540A
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- 241000208340 Araliaceae Species 0.000 description 2
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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 kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor, methods described includes：When detecting that calibration parameter obtains trigger event, judge whether fingerprint sensor surface has liquid based on default decision method；Calibration parameter value is preset according to corresponding to determining result of determination, to support to carry out the crawl of fingerprint image according to the default calibration parameter value.Technical scheme provided in an embodiment of the present invention, by judging whether fingerprint sensor surface has liquid, calibration parameter value is preset according to corresponding to result of determination determines fingerprint sensor to carry out the technological means of fingerprint image crawl, solve in the prior art no matter whether fingerprint sensor surface has liquid, all obtain the crawl that identical calibration parameter value carries out fingerprint image, cause the low technical problem of the calibration parameter accuracy rate of acquired crawl fingerprint image, improve the accuracy rate for the calibration parameter for obtaining fingerprint sensor, and the degree of accuracy of the fingerprint image of crawl.
Description
The application is divisional application, and the Application No. 201510680017.0 of original application, the applying date is October 19 in 2015
Day, entitled " a kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor.
Technical field
The present embodiments relate to technical field of mobile terminals, more particularly to a kind of calibration parameter of fingerprint sensor obtains
Take method, device and mobile terminal.
Background technology
With the development of mobile terminal technology and image processing techniques, fingerprint identification technology is higher as a kind of degree of safety
Identification technology has been applied to multiple fields, is not only that personal secret device band carrys out safeguard protection, more brings what user used
Convenience.For example, the application software on mobile terminal or mobile terminal or file are encrypted by fingerprint identification technology or
Person is unlocked, and good experience is brought for user.
In general, the fingerprint identification process of the fingerprint sensor of mobile terminal mainly includes following three steps：1st, it is right
Fingerprint sensor is calibrated and obtains calibration parameter；2nd, the crawl of fingerprint image is carried out according to calibration parameter；3rd, by crawl
Fingerprint image is matched with the fingerprint image prestored.Because the fingerprint image of user is being captured by fingerprint sensor
When need user by finger contact mobile terminal fingerprint sensor surface, to capture the finger print information of user, unavoidably
Ground, fingerprint sensor surface can there are the situation of liquid.In the prior art, no matter whether fingerprint sensor surface has liquid,
After user contacts fingerprint sensing, the crawl that identical calibration parameter value carries out fingerprint image is all obtained, causes the finger of crawl
The accuracy rate of print image is low, and then causes the fingerprint image to be unmatched with the fingerprint image prestored, reduces fingerprint
Discrimination.
The content of the invention
The embodiment of the present invention provides a kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor, with
Lifting obtains the accuracy rate of the calibration parameter of fingerprint sensor.
In a first aspect, the embodiments of the invention provide a kind of acquisition methods of the calibration parameter of fingerprint sensor, including：
When detecting that calibration parameter obtains trigger event, whether fingerprint sensor surface is judged based on default decision method
There is liquid；
Calibration parameter value is preset according to corresponding to determining result of determination, to support to carry out according to the default calibration parameter value
The crawl of fingerprint image.
In second aspect, the embodiment of the present invention provides a kind of acquisition device of the calibration parameter of fingerprint sensor, including：
Determination module, for when detecting that calibration parameter obtains trigger event, judging fingerprint based on default decision method
Whether sensor surface has liquid；
Calibration parameter value determining module, for presetting calibration parameter value corresponding to being determined according to result of determination, to support root
The crawl of fingerprint image is carried out according to the default calibration parameter value.
In the third aspect, the embodiment of the present invention also provides a kind of mobile terminal, including the device that second aspect provides.
Acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor provided in an embodiment of the present invention, pass through
Judge whether fingerprint sensor surface has liquid, preset according to corresponding to result of determination determines fingerprint sensor calibration parameter value with
The technological means of fingerprint image crawl is carried out, solves in the prior art no matter whether fingerprint sensor surface has liquid, all obtains
Take identical calibration parameter value to carry out the crawl of fingerprint image, cause the calibration parameter accuracy rate of acquired crawl fingerprint image
Low technical problem, improve obtain fingerprint sensor calibration parameter accuracy rate, and crawl fingerprint image it is accurate
Degree.
Brief description of the drawings
Fig. 1 is the flow chart of the acquisition methods of the calibration parameter for the fingerprint sensor that the embodiment of the present invention one provides；
Fig. 2 is the flow chart of the acquisition methods of the calibration parameter for the fingerprint sensor that the embodiment of the present invention two provides；
Fig. 3 is the flow chart of the acquisition methods of the calibration parameter for the fingerprint sensor that the embodiment of the present invention three provides；
Fig. 4 is the structural representation of the acquisition device of the calibration parameter for the fingerprint sensor that the embodiment of the present invention four provides.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings to the specific reality of the present invention
Example is applied to be described in further detail.It is understood that specific embodiment described herein is used only for explaining the present invention,
Rather than limitation of the invention.It also should be noted that for the ease of describing, illustrate only in accompanying drawing related to the present invention
Part rather than full content.It should be mentioned that some exemplary realities before exemplary embodiment is discussed in greater detail
Apply processing or method that example is described as describing as flow chart.Although operations (or step) are described as order by flow chart
Processing, but many of which operation can be implemented concurrently, concomitantly or simultaneously.In addition, the order of operations
It can be rearranged.The processing can be terminated when its operations are completed, it is also possible to being not included in accompanying drawing
Additional step.The processing can correspond to method, function, code, subroutine, subprogram etc..
Embodiment one
Fig. 1 gives the flow chart of the acquisition methods of the calibration parameter of the fingerprint sensor of the offer of the embodiment of the present invention one,
This method can be performed by the acquisition device of the calibration parameter of fingerprint sensor.Described device can be real by software and/or hardware
It is existing, it can be built in as a part for mobile terminal inside mobile terminal.As shown in figure 1, the fingerprint that the present embodiment provides passes
The acquisition methods of the calibration parameter of sensor specifically comprise the following steps：
Step 101, detect calibration parameter obtain trigger event when, based on default decision method judge fingerprint sensor
Whether surface has liquid.
Mobile terminal described in the present embodiment includes but is not limited to mobile phone, tablet personal computer, notebook.
Wherein, it can be arbitrarily to detect that user acts on fingerprint sensor that the calibration parameter, which obtains trigger event,
The event of some preset instructions is detected before operation, for example, in running of mobile terminal application software, for example wechat is paid
When, before user acts on fingerprint sensor, as long as detecting that wechat pays dependent instruction, then it can generate calibration parameter acquisition
Trigger event, calibration parameter is obtained before user acts on sensor.
Wherein, the liquid can be water.
Step 102, calibration parameter value is preset according to corresponding to determining result of determination, to support to join according to the default calibration
Numerical value carries out the crawl of fingerprint image.
The parameter preset according to corresponding to determining result of determination can be：There is no liquid on the fingerprint sensor surface
When, it is determined that corresponding default calibration parameter value is the first default calibration parameter value；When having liquid on the fingerprint sensor surface,
It is determined that corresponding default calibration parameter value is the second default calibration parameter value.Can also be：According to fingerprint sensing in result of determination
The humidity of device, it is determined that corresponding default calibration parameter value is default calibration parameter value corresponding with humidity, wherein, the humidity can
To be divided into multiple grades, the corresponding default calibration parameter value of each humidity level.The default calibration parameter value is advance
Set and store the calibration parameter value in system, the benefit so set is：Can solve in the prior art in crawl fingerprint
The problem of fingerprint sensor prover time caused by automatic calibration generation calibration parameter is needed before image is longer.
After calibration parameter value is determined, if detecting, user acts on the operational order of fingerprint sensor, basis
The default calibration parameter value carries out the crawl of fingerprint image.
The acquisition methods of the calibration parameter for the fingerprint sensor that the embodiment of the present invention one provides, by judging fingerprint sensor
Whether surface has liquid, and calibration parameter value is preset according to corresponding to result of determination determines fingerprint sensor and is grabbed with carrying out fingerprint image
The technological means taken, solve in the prior art no matter whether fingerprint sensor surface has liquid, all obtain identical calibration ginseng
Numerical value carries out the crawl of fingerprint image, causes the low technical problem of the calibration parameter accuracy rate of acquired crawl fingerprint image,
Improve the accuracy rate for the calibration parameter for obtaining fingerprint sensor, and the degree of accuracy of the fingerprint image of crawl.
Embodiment two
Fig. 2 gives the flow chart of the acquisition methods of the calibration parameter of the fingerprint sensor of the offer of the embodiment of the present invention two.
The present invention is optimized based on embodiment one, in the present embodiment, calibration will be preset according to corresponding to determining result of determination
Parameter value, to support specifically to be optimized for according to the crawl that the default calibration parameter value carries out fingerprint image：Passed in the fingerprint
When sensor surfaces do not have liquid, it is determined that corresponding default calibration parameter value is the first default calibration parameter value, to support according to institute
State the crawl that the first default calibration parameter value carries out fingerprint image；When having liquid on the fingerprint sensor surface, it is determined that corresponding
Default calibration parameter value be the second default calibration parameter value, to support to carry out fingerprint according to the described second default calibration parameter value
The crawl of image.
Accordingly, as shown in Fig. 2 the acquisition methods of the calibration parameter for the fingerprint sensor that the present embodiment provides are including following
Step：
Step 201, detect calibration parameter obtain trigger event when, based on default decision method judge fingerprint sensor
Whether surface has liquid.
Step 202, when there is no liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is first
Default calibration parameter value, to support to carry out the crawl of fingerprint image according to the described first default calibration parameter value.Wherein, described
One default calibration parameter value includes the first preset gain value and the first preset offset value.
Exemplary, the input signal of fingerprint image is x, is y according to the fingerprint image data that calibration parameter captures, then may be used
Meet linear equation y=kx+b the first default calibration parameter value k, b be present, wherein, k is the first preset gain value, b first
Preset offset value.The first preset gain value k is used to carry out the input signal of fingerprint image adjustment by a relatively large margin, described
First preset offset value b is used to be finely adjusted the input signal of fingerprint image.
Step 203, when having liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is second pre-
If calibration parameter value, to support to carry out the crawl of fingerprint image according to the described second default calibration parameter value.Wherein, described second
Default calibration parameter value includes the second preset gain value and the second preset offset value, and it is pre- that the first preset gain value is less than second
If yield value.Since when there is no liquid on fingerprint sensor surface, fingerprint sensor when user's finger acts on fingerprint sensor
Capacitance variations it is big, it is corresponding be used to capture fingerprint image yield value it is small, when having liquid on fingerprint sensor surface, refer to
The capacitance variations of line sensor are small, and the corresponding yield value for being used to capture fingerprint image will be greatly.
The present embodiment has liquid and without two kinds of liquid by whether fingerprint sensor surface has the result of determination of liquid to be divided into
Situation, each situation corresponds to a default calibration parameter value respectively, because having liquid and no liquid on fingerprint sensor surface
During body, corresponding two default calibration parameter values may differ by obvious, and its is wet when there is liquid on fingerprint sensor surface
It is not it is obvious that so having liquid according to fingerprint sensor surface and not having that calibration parameter value difference is preset corresponding to degree grade difference
Have and preset calibration parameter value corresponding to two kinds of result of determination determinations of liquid, the basis of acquisition calibration parameter accuracy rate can ensured
On, shorten the time for determining calibration parameter.
The acquisition methods of the calibration parameter for the fingerprint sensor that the embodiment of the present invention two provides, by judging fingerprint sensor
Whether surface has liquid, when not having liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is first
Default calibration parameter value, when having liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is second pre-
If calibration parameter value, to support to carry out fingerprint image according to the described first default calibration parameter value or the second default calibration parameter value
Crawl, solve in the prior art no matter whether fingerprint sensor surface has liquid, all obtain identical calibration parameter value enter
The crawl of row fingerprint image, cause the low technical problem of the calibration parameter accuracy rate of acquired crawl fingerprint image, improve
Obtain the accuracy rate of the calibration parameter of fingerprint sensor, and the degree of accuracy of the fingerprint image of crawl.
Embodiment three
Fig. 3 gives the flow chart of the acquisition methods of the calibration parameter of the fingerprint sensor of the offer of the embodiment of the present invention three.
The present embodiment is optimized based on embodiment one, in the present embodiment, school will be preset according to corresponding to determining result of determination
Quasi- parameter value, to support specifically to be optimized for according to the crawl that the default calibration parameter value carries out fingerprint image：In the fingerprint
When sensor surface does not have liquid, it is determined that corresponding default calibration parameter value is the first default calibration parameter value, to support basis
Described first default calibration parameter value carries out the crawl of fingerprint image；When having liquid on the fingerprint sensor surface, control refers to
Line sensor heats up, and it is first that calibration parameter value is preset to remove the liquid on the fingerprint sensor surface, and corresponding to determination
Default calibration parameter value, to support to carry out the crawl of fingerprint image according to the described first default calibration parameter value.
Accordingly, as shown in figure 3, the acquisition methods of the calibration parameter for the fingerprint sensor that the present embodiment provides are including following
Step：
Step 301, detect calibration parameter obtain trigger event when, based on default decision method judge fingerprint sensor
Whether surface has liquid.
The step can specifically include：When detecting that calibration parameter obtains trigger event, working as fingerprint sensor is obtained
Preceding capacitance；Calculate the difference of the capacitance present value and predetermined capacitive a reference value；If the difference is sentenced in predetermined threshold value
There is liquid on the fixed fingerprint sensor surface, otherwise judges that the fingerprint sensor surface does not have liquid.
Wherein, the predetermined capacitive a reference value be fingerprint sensor before dispatching from the factory, its surface is measured when not having liquid
Capacitance, and the predetermined capacitive a reference value is prestored in system.
Step 302, when there is no liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is first
Default calibration parameter value, to support to carry out the crawl of fingerprint image according to the described first default calibration parameter value.
Step 303, when having liquid on the fingerprint sensor surface, control fingerprint sensor heating, to remove the finger
The liquid of line sensor surface, and it is the first default calibration parameter value that calibration parameter value is preset corresponding to determination, to support basis
Described first default calibration parameter value carries out the crawl of fingerprint image.
Wherein, the control fingerprint sensor heating can include：Increase the power of the fingerprint sensor, so that described
Fingerprint sensor heats up；Or heater element corresponding to the control fingerprint sensor heats to the fingerprint sensor,
So that the fingerprint sensor heating.
Wherein, the power of the increase fingerprint sensor can increase speed with identical and increase the power, also may be used
To increase the power with the increase speed of stepped change；Heater element is to described corresponding to the control fingerprint sensor
It can add with identical heating rate fingerprint sensor or with stepped change that fingerprint sensor, which carries out heating,
Hot speed heats fingerprint sensor, and the present embodiment is not limited to this.
In addition, when having liquid on the fingerprint sensor surface, can also send fingerprint sensor surface has carrying for liquid
Show information, to prompt user to remove the liquid on the fingerprint sensor surface.
The acquisition methods of the calibration parameter for the fingerprint sensor that the embodiment of the present invention three provides, pass through fingerprint sensor electric capacity
Change judge whether fingerprint sensor surface has liquid, when there is no liquid on the fingerprint sensor surface, it is determined that corresponding
Default calibration parameter value is the first default calibration parameter value, when having liquid on the fingerprint sensor surface, controls fingerprint sensing
Device heats up, and it is the first default school that calibration parameter value is preset to remove the liquid on the fingerprint sensor surface, and corresponding to determination
Quasi- parameter value, to support to carry out the crawl of fingerprint image according to the described first default calibration parameter value, solve in the prior art
No matter whether fingerprint sensor surface has liquid, all obtains the crawl that identical calibration parameter value carries out fingerprint image immediately, leads
The low technical problem of the calibration parameter accuracy rate of acquired crawl fingerprint image is caused, improves the calibration for obtaining fingerprint sensor
The accuracy rate of parameter, and the degree of accuracy of the fingerprint image of crawl.
Example IV
Fig. 4 gives the structural representation of the acquisition device of the calibration parameter of the fingerprint sensor of the offer of the embodiment of the present invention four
Figure.As shown in figure 4, the acquisition device of the calibration parameter for the fingerprint sensor that the embodiment of the present invention four provides includes：
Determination module 41, for when detecting that calibration parameter obtains trigger event, judging to refer to based on default decision method
Whether line sensor surface has liquid；
Calibration parameter value determining module 42, for presetting calibration parameter value corresponding to being determined according to result of determination, to support
The crawl of fingerprint image is carried out according to the default calibration parameter value.
Preferably, the calibration parameter value determining module 42 is specifically used for：
When there is no liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is the first default calibration
Parameter value, to support to carry out the crawl of fingerprint image according to the described first default calibration parameter value；
When having liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is the second default calibration ginseng
Numerical value, to support to carry out the crawl of fingerprint image according to the described second default calibration parameter value.
Preferably, the calibration parameter value determining module 42 includes：
First calibration parameter value determining unit, during for not having liquid on the fingerprint sensor surface, it is determined that corresponding
Default calibration parameter value is the first default calibration parameter value, to support to carry out fingerprint image according to the described first default calibration parameter value
The crawl of picture；
Fingerprint sensor heats up unit, during for having liquid on the fingerprint sensor surface, controls fingerprint sensor liter
Temperature, to remove the liquid on the fingerprint sensor surface；
Second calibration parameter value determining unit, it is the first default calibration parameter for presetting calibration parameter value corresponding to determination
Value, to support to carry out the crawl of fingerprint image according to the described first default calibration parameter value.
Preferably, the described first default calibration parameter value includes the first preset gain value and the first preset offset value, institute
Stating the second default calibration parameter value includes the second preset gain value and the second preset offset value, and the first preset gain value is less than
Second preset gain value.
Preferably, the determination module 41 is specifically used for：
When detecting that calibration parameter obtains trigger event, the capacitance present value of fingerprint sensor is obtained；
Calculate the difference of the capacitance present value and predetermined capacitive a reference value；
If the difference in predetermined threshold value, judges that there is liquid on the fingerprint sensor surface, the finger is otherwise judged
Line sensor surface does not have liquid.
Preferably, the fingerprint sensor heating unit is specifically used for：
When having liquid on the fingerprint sensor surface, increase the power of the fingerprint sensor, so that the fingerprint passes
Sensor heats up；Or when on the fingerprint sensor surface having liquid, control heater element pair corresponding to the fingerprint sensor
The fingerprint sensor is heated, so that the fingerprint sensor heats up.
The executable present invention of the acquisition device of the calibration parameter of fingerprint sensor provided in an embodiment of the present invention is any to be implemented
The acquisition methods of the calibration parameter for the fingerprint sensor that example provides, possess the corresponding functional module of execution method and beneficial effect.
In addition, the embodiment of the present invention also provides a kind of mobile terminal, including the device that the embodiment of the present invention four provides, can
The method that the embodiment of the present invention one is provided to embodiment three is performed, possesses the corresponding functional module of execution method and beneficial to effect
Fruit.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (7)
- A kind of 1. acquisition methods of the calibration parameter of fingerprint sensor, it is characterised in that including：When detecting that calibration parameter obtains trigger event, judge whether fingerprint sensor surface has liquid based on default decision method Body；When there is no liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is the first default calibration parameter Value, to support to carry out the crawl of fingerprint image according to the described first default calibration parameter value；When having liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is the second default calibration parameter Value, to support to carry out the crawl of fingerprint image according to the described second default calibration parameter value.
- 2. according to the method for claim 1, it is characterised in that the described first default calibration parameter value includes the first default increasing Benefit value and the first preset offset value, the described second default calibration parameter value include the second preset gain value and the second default bias Value, the first preset gain value are less than the second preset gain value.
- 3. method according to claim 1 or 2, it is characterised in that described to detect calibration parameter acquisition trigger event When, judge whether fingerprint sensor surface has liquid to include based on default decision method：When detecting that calibration parameter obtains trigger event, the capacitance present value of fingerprint sensor is obtained；Calculate the difference of the capacitance present value and predetermined capacitive a reference value；If the difference in predetermined threshold value, judges that there is liquid on the fingerprint sensor surface, otherwise judge that the fingerprint passes Sensor surfaces do not have liquid.
- A kind of 4. acquisition device of the calibration parameter of fingerprint sensor, it is characterised in that including：Determination module, for when detecting that calibration parameter obtains trigger event, judging fingerprint sensing based on default decision method Whether device surface has liquid；Calibration parameter value determining module, during for not having liquid on the fingerprint sensor surface, it is determined that corresponding default calibration Parameter value is the first default calibration parameter value, to support to carry out grabbing for fingerprint image according to the described first default calibration parameter value Take；When having liquid on the fingerprint sensor surface, it is determined that corresponding default calibration parameter value is the second default calibration parameter value, To support to carry out the crawl of fingerprint image according to the described second default calibration parameter value.
- 5. device according to claim 4, it is characterised in that the described first default calibration parameter value includes the first default increasing Benefit value and the first preset offset value, the described second default calibration parameter value include the second preset gain value and the second default bias Value, the first preset gain value are less than the second preset gain value.
- 6. the device according to claim 4 or 5, it is characterised in that the determination module is specifically used for：When detecting that calibration parameter obtains trigger event, the capacitance present value of fingerprint sensor is obtained；Calculate the difference of the capacitance present value and predetermined capacitive a reference value；If the difference in predetermined threshold value, judges that there is liquid on the fingerprint sensor surface, otherwise judge that the fingerprint passes Sensor surfaces do not have liquid.
- 7. a kind of mobile terminal, it is characterised in that including any described devices of claim 4-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710958400.7A CN107609540B (en) | 2015-10-19 | 2015-10-19 | Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510680017.0A CN105303172B (en) | 2015-10-19 | 2015-10-19 | A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor |
| CN201710958400.7A CN107609540B (en) | 2015-10-19 | 2015-10-19 | Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal |
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| CN201510680017.0A Division CN105303172B (en) | 2015-10-19 | 2015-10-19 | A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor |
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| CN201510680017.0A Active CN105303172B (en) | 2015-10-19 | 2015-10-19 | A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108764015B (en) * | 2015-10-19 | 2021-03-02 | Oppo广东移动通信有限公司 | Method and device for acquiring fingerprint image to be identified and mobile terminal |
| CN107609540B (en) * | 2015-10-19 | 2024-01-23 | Oppo广东移动通信有限公司 | Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal |
| CN105975044B (en) * | 2016-04-25 | 2020-03-31 | Oppo广东移动通信有限公司 | Method and device for automatically controlling touch screen wet hand mode through fingerprint detection |
| CN105844262A (en) * | 2016-04-25 | 2016-08-10 | 广东欧珀移动通信有限公司 | Method and device for determination of touch position through combination of fingerprint in wet hand operation mode |
| CN105930809B (en) * | 2016-04-26 | 2018-01-19 | 广东欧珀移动通信有限公司 | Method for controlling fingerprint identification, fingerprint recognition control device and electronic installation |
| CN108491707B (en) * | 2016-05-30 | 2020-01-14 | Oppo广东移动通信有限公司 | Unlocking control method, terminal equipment and medium product |
| CN106096372B (en) * | 2016-06-21 | 2018-03-02 | 广东欧珀移动通信有限公司 | A kind of unlocked by fingerprint method and terminal |
| CN107563261A (en) * | 2016-07-01 | 2018-01-09 | 联想移动通信科技有限公司 | A kind of fingerprint identification device and mobile terminal device |
| CN106355144B (en) * | 2016-08-26 | 2019-08-20 | Oppo广东移动通信有限公司 | Acquisition method, device and the mobile terminal of fingerprint image |
| CN108573188B (en) * | 2017-03-07 | 2021-10-08 | 宏碁股份有限公司 | Fingerprint sensing device, electronic device and calibration method of fingerprint sensor |
| CN108391447B (en) * | 2018-03-01 | 2022-04-01 | 深圳市汇顶科技股份有限公司 | Capacitance fingerprint chip, mismatch adjustment method and terminal equipment |
| CN109492567B (en) * | 2018-10-31 | 2020-11-13 | 上海海栎创微电子有限公司 | Dynamic calibration method for fingerprint sensor |
| CN110298313B (en) * | 2019-06-28 | 2021-09-21 | Oppo广东移动通信有限公司 | Ultrasonic fingerprint identification method and device, electronic equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101027700A (en) * | 2004-01-27 | 2007-08-29 | 理查德·特纳 | Method and apparatus for detection and tracking of objects within a defined area |
| US20080043027A1 (en) * | 2004-12-09 | 2008-02-21 | Makoto Shiomi | Image Data Processing Device, Liquid Crystal Display Apparatus Including Same, Display Apparatus Driving Device, Display Apparatus Driving Method, Program Therefor, And Storage Medium |
| JP2013008378A (en) * | 2006-01-18 | 2013-01-10 | Pfu Ltd | Device management system, device management method, and external device |
| CN103440474A (en) * | 2013-08-12 | 2013-12-11 | 江苏恒成高科信息科技有限公司 | Semiconductor fingerprint reading sensor device |
| CN104252399A (en) * | 2013-06-27 | 2014-12-31 | 中兴通讯股份有限公司 | Calibration processing method and device of touch screen, touch screen and terminal |
| CN104866140A (en) * | 2015-05-27 | 2015-08-26 | 小米科技有限责任公司 | Screen calibration method and screen calibration apparatus |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5177353A (en) * | 1990-07-31 | 1993-01-05 | Retrievex, Inc. | Finger surface image enhancement having liquid layer on finger touching surface of the plate |
| JP4068334B2 (en) * | 2001-11-26 | 2008-03-26 | 日本電気株式会社 | Fingerprint authentication method, fingerprint authentication system, and biometric authentication system |
| JP4169185B2 (en) * | 2002-02-25 | 2008-10-22 | 富士通株式会社 | Image linking method, program, and apparatus |
| CN100364480C (en) * | 2002-09-17 | 2008-01-30 | 富士通株式会社 | Biological information acquiring apparatus and authentication apparatus using biological information |
| WO2005024706A1 (en) * | 2003-09-11 | 2005-03-17 | Philips Intellectual Property & Standards Gmbh | Fingerprint detection using sweep-type imager with optoelectronic speed sensor |
| KR100575144B1 (en) * | 2004-03-10 | 2006-04-28 | 씨큐트로닉스 (주) | Fingerprint recognition apparatus for mobile device |
| CN101847202B (en) * | 2009-03-23 | 2012-11-28 | 凯迈(洛阳)电子有限公司 | Correction algorithm for image distortion of optical fingerprint collector |
| CN102929419B (en) * | 2011-08-10 | 2016-05-11 | 深圳市顶星数码网络技术有限公司 | A kind of automatic calibrating method, system and automatic calibration touch panel device of touch-screen |
| CN103488682A (en) * | 2012-02-28 | 2014-01-01 | 艾康生物技术(杭州)有限公司 | Biosensor detection system and method for automatically identifying identity information of biosensor |
| CN104700070B (en) * | 2015-01-13 | 2017-09-12 | 深圳市汇顶科技股份有限公司 | Fingerprint sensor and its bearing calibration |
| CN107609540B (en) * | 2015-10-19 | 2024-01-23 | Oppo广东移动通信有限公司 | Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal |
-
2015
- 2015-10-19 CN CN201710958400.7A patent/CN107609540B/en active Active
- 2015-10-19 CN CN201510680017.0A patent/CN105303172B/en active Active
-
2016
- 2016-07-26 WO PCT/CN2016/091803 patent/WO2017067259A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101027700A (en) * | 2004-01-27 | 2007-08-29 | 理查德·特纳 | Method and apparatus for detection and tracking of objects within a defined area |
| US20080043027A1 (en) * | 2004-12-09 | 2008-02-21 | Makoto Shiomi | Image Data Processing Device, Liquid Crystal Display Apparatus Including Same, Display Apparatus Driving Device, Display Apparatus Driving Method, Program Therefor, And Storage Medium |
| JP2013008378A (en) * | 2006-01-18 | 2013-01-10 | Pfu Ltd | Device management system, device management method, and external device |
| CN104252399A (en) * | 2013-06-27 | 2014-12-31 | 中兴通讯股份有限公司 | Calibration processing method and device of touch screen, touch screen and terminal |
| CN103440474A (en) * | 2013-08-12 | 2013-12-11 | 江苏恒成高科信息科技有限公司 | Semiconductor fingerprint reading sensor device |
| CN104866140A (en) * | 2015-05-27 | 2015-08-26 | 小米科技有限责任公司 | Screen calibration method and screen calibration apparatus |
Non-Patent Citations (1)
| Title |
|---|
| MEHMET KAYAOGLU等: "Biometric Matching and Fusion System for Fingerprints from Non-Distal Phalanges", 《ARXIV》, pages 1 - 22 * |
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| WO2017067259A1 (en) | 2017-04-27 |
| CN105303172B (en) | 2017-11-21 |
| CN107609540B (en) | 2024-01-23 |
| CN105303172A (en) | 2016-02-03 |
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