CN108509874A - A kind of data processing method and electronic equipment, computer storage media - Google Patents
A kind of data processing method and electronic equipment, computer storage media Download PDFInfo
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- CN108509874A CN108509874A CN201810219303.0A CN201810219303A CN108509874A CN 108509874 A CN108509874 A CN 108509874A CN 201810219303 A CN201810219303 A CN 201810219303A CN 108509874 A CN108509874 A CN 108509874A
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- fingerprint image
- fingerprint
- video file
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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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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- Theoretical Computer Science (AREA)
- Collating Specific Patterns (AREA)
- Image Input (AREA)
Abstract
The invention discloses a kind of data processing method and electronic equipment, computer storage media, the method includes：Sensor acquires the finger print data in the first duration, and video file is generated based on the finger print data in first duration；The video file is encrypted in first processor, and the encrypted video file is sent to host driver；The host driver obtains fingerprint image from the video file, and the quality based on the fingerprint image determines whether using the fingerprint image as fingerprint template.
Description
Technical field
The present invention relates to fingerprinting technique fields more particularly to a kind of data processing method and electronics about fingerprint to set
Standby, computer storage media.
Background technology
More and more electronic equipments have fingerprint recognition (FPR, Finger Print Recognition) function, FPR
For personal device (such as mobile phone), security function and abundant user experience, such as mobile phone unlocking function, movement are realized
Payment function etc..During FPR is designed, how balancing safety function, properties of product and product cost are to need to solve
Certainly the problem of.
Invention content
In order to solve the above technical problems, an embodiment of the present invention provides a kind of data processing method and electronic equipment, calculating
Machine storage medium.
Data processing method provided in an embodiment of the present invention, including：
Sensor acquires the finger print data in the first duration, and video text is generated based on the finger print data in first duration
Part；
The video file is encrypted in first processor, and the encrypted video file is sent to host and is driven
Dynamic device；
The host driver obtains fingerprint image from the video file, and the quality based on the fingerprint image is true
Whether determine using the fingerprint image as fingerprint template.
In the embodiment of the present invention, described first when, a length of target object touched the duration of the sensor；
The sensor acquires the finger print data in the first duration, is regarded based on the finger print data generation in first duration
Frequency file, including：
The sensor acquires the finger print data in the first duration, is generated based on the finger print data in first duration
Mpeg file.
In the embodiment of the present invention, the method further includes：
The video file is sent to the first processor by the sensor, by the first processor to described
Video file is stored.
In the embodiment of the present invention, the quality based on the fingerprint image determines whether using the fingerprint image as referring to
Line template, including：
If the quality for stating fingerprint image meets goal condition, stored the fingerprint image as fingerprint template
In fingerprint database；
If the quality of the fingerprint image is unsatisfactory for the goal condition, the fingerprint image is deleted.
In the embodiment of the present invention, the method further includes：
If the quality of the fingerprint image is unsatisfactory for the goal condition, the host driver is to user interface
(UI) module sends the first instruction information, and the first instruction information is used to indicate user and re-types finger print information.
In the embodiment of the present invention, the method further includes：
The host driver sends the second instruction information to the sensor, and the second instruction information is used to indicate institute
State sensor preparation for acquiring finger print data.
Electronic equipment provided in an embodiment of the present invention, including：Sensor, first processor, host driver；
Wherein,
The sensor, for acquiring the finger print data in the first duration, based on the finger print data in first duration
Generate video file；
The first processor is sent out for the video file to be encrypted, and by the encrypted video file
Give host driver；
The host driver, for obtaining fingerprint image from the video file, and based on the fingerprint image
Quality determines whether using the fingerprint image as fingerprint template.
In the embodiment of the present invention, storage unit, the sensor, for being regarded by described in are provided on the first processor
Frequency file is sent to the first processor, is stored the video file to storage list by the first processor
Member.
In the embodiment of the present invention, the host driver, for determining whether the quality of the fingerprint image meets target
Condition；If the quality for stating fingerprint image meets goal condition, the fingerprint image is stored in as fingerprint template
In fingerprint database；If the quality of the fingerprint image is unsatisfactory for the goal condition, the fingerprint image is deleted.
Computer storage media provided in an embodiment of the present invention, is stored thereon with computer executable instructions, the computer
Above-mentioned data processing method is realized when executable instruction is executed by processor.
In the technical solution of the embodiment of the present invention, sensor acquires the finger print data in the first duration, is based on described first
Finger print data in duration generates video file；The video file is encrypted in first processor, and by encrypted institute
It states video file and is sent to host driver；The host driver obtains fingerprint image from the video file, and is based on
The quality of the fingerprint image determines whether using the fingerprint image as fingerprint template.Using the technical side of the embodiment of the present invention
Case, 1) different types of fingerprint sensor can use identical encipherment scheme, compatibility stronger；2) performance of fingerprint sensor
Optimized；3) fingerprint sensor has higher safety and efficiency；3) cost of fingerprint sensor is relatively low.
Description of the drawings
Fig. 1 is communication scheme of the host (Host) between sensor；
Fig. 2 is the flow chart that MCU handles finger print data；
Fig. 3 is the flow diagram of the data processing method of the embodiment of the present invention；
Fig. 4 is the flow that the MCU in the embodiment of the present invention handles finger print data；
Fig. 5 is the structure composition schematic diagram of the electronic equipment of the embodiment of the present invention.
Specific implementation mode
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings to this hair
The realization of bright embodiment is described in detail, appended attached drawing purposes of discussion only for reference, is not used for limiting the embodiment of the present invention.
Fig. 1 is communication scheme of the host (Host) between sensor, as shown in Figure 1, sensor and host (Host)
Between be provided with microprocessor (MCU, Microcontroller Unit), wherein sensor is specially FPR sensors, Host
Can be the processing systems such as notebook, mobile phone, tablet computer, optional equipment (Option of the FPR sensors usually as Host
Device it) is communicated by MCU with Host.
In one example, the flow that MCU handles finger print data is as shown in Fig. 2, include the following contents：
1) user touches FPR sensors, and FPR sensors acquire the fingerprint initial data of user.
2) fingerprint initial data is encrypted in MCU.
Here, fingerprint initial data is the initial data of a fingerprint image, hereinafter referred to as image data.
3) encrypted image data is sent to Host drivers and handled by MCU.
4) encrypted image data is decrypted in Host drivers, an image data is obtained, to the image data
Picture quality is judged, if the picture quality of image data meets goal condition enough, described image data are stored in
It is used as fingerprint template in fingerprint database.
Here, the effect of fingerprint template is the fingerprint arrived for matching subsequent acquisition, according to matching result and then executes phase
The operation answered.
If 5) picture quality of image data is unsatisfactory for goal condition, Host drivers delete the image data.
6) Host drivers send a notification message to UI, and fingerprint is re-typed to indicate that UI is prompted the user with.
7) Host drivers send a notification message to FPR sensors, to indicate FPR sensor preparation for acquiring fingerprint original numbers
According to.
Fig. 3 is the flow diagram of the data processing method of the embodiment of the present invention, as shown in figure 3, the data processing side
Method includes the following steps：
Step 301：Sensor acquires the finger print data in the first duration, based on the finger print data life in first duration
At video file.
In the embodiment of the present invention, the sensor is FPR sensors, and FPR sensors press sensing principle, i.e. fingerprint imaging is former
Reason and technology are divided into optical fingerprint sensor, semicoductor capacitor sensor, semiconductor heat dependent sensor, semiconductor pressure sensitivity sensing
Device, ultrasonic sensor and radio frequency sensor etc..
In the embodiment of the present invention, what sensor acquired is the finger print data of one section of duration, the finger print data of this section of duration
Include actually several fingerprint images, the finger print data in collected first duration is converted to video file by sensor.
In one embodiment, described first when a length of target object touch the duration of the sensor, specifically, when with
When the finger at family is touched on a sensor, sensor starts continuous collecting finger print data, when the finger of user leaves sensor,
Sensor terminates to acquire finger print data.Finger print data collected in this way is a series of fingerprint images with time change, this
A little fingerprint images are different and different with the dynamics that user presses, also can be different and different with user's pressing angle of inclination, very
It is extremely different along with the movement of the finger of user.
In one embodiment, the sensor acquires the finger print data in the first duration, based in first duration
Finger print data generate mpeg file.
As shown in figure 4, the format of mpeg file includes：I frames, B frames, P frames, wherein I frames are intracoded frame, before P frames are
To encoded predicted frame, B frames are bi-directional predicted interpolation coding frame.
Step 302：The video file is encrypted in first processor, and the encrypted video file is sent
To host driver.
In the embodiment of the present invention, first processor can be MCU, after sensor has acquired finger print data, by mpeg file
Be sent to MCU, mpeg file is encrypted in MCU, here, no matter the collected fingerprint number of fingerprint sensor of which type
According to sensor is all converted into mpeg file, therefore MCU can be compatible with different types of sensor, using identical encryption
Mpeg file is encrypted in algorithm.
In the embodiment of the present invention, what is transmitted between MCU and Host drivers is encrypted mpeg file, has ensured fingerprint number
According to safety, and this cipher mode is without increasing additional cost, very practical.
In one embodiment, the video file is sent to the first processor by the sensor, by described
First processor stores the video file.Here, MCU is to judging whether the video file of storage reaches a fixed number
Amount, if reach certain amount, begin to all videos file of storage is encrypted and is sent to Host drivers into
Row processing, has accomplished the effect cached to video file.
Step 303：The host driver obtains fingerprint image from the video file, and is based on the fingerprint image
Quality determine whether using the fingerprint image as fingerprint template.
In the embodiment of the present invention, what Host drivers were received from MCU is encrypted mpeg file, is needed to mpeg file
It is decrypted, after successful decryption, the image data of each frame fingerprint is obtained from mpeg file, since mpeg file includes more
The image data of frame fingerprint, it is therefore desirable to the quality of the image of each frame image data be assessed, determine mass highest
A frame image after, then the picture quality of the frame image is judged, if the picture quality of the frame image meets target item
Part is then stored in the fingerprint image as fingerprint template in fingerprint database.
In said program, during primary acquisition, multiframe fingerprint image can be collected, fingerprint template is improved
Success rate is acquired, the typing that user repeatedly carries out fingerprint is avoided, improves the experience that user uses fingerprint function.
In one example, the assessment of picture quality may be employed without limitation of following manner：Fingerprint image is drawn first
It is divided into 32 × 32 sub-block, Fast Fourier Transform (FFT) (FFT) is done to each sub-block, the minimum rotation of calculation block frequency spectrum profile is used
Amount and eccentricity, the partial analysis result of block quality is obtained from these parameters；Then the frequency domain character parameter per block diagram picture is investigated
The relationship of (direction, frequency etc.) and its 8 neighborhood block relevant parameter, clusters to form the clear of image from the overall point of view of the streakline force and velocity of a current
Area and confusion region；The result for finally integrating partial analysis and global analysis, provides the quality evaluation of fingerprint image.
The flows handled finger print data of the MCU in the embodiment of the present invention are described below in conjunction with Fig. 4, including
The following contents：
1) user touches FPR sensors, and FPR sensors acquire the fingerprint initial data in one section of duration of user, and base
In fingerprint Raw Data Generation mpeg file.
2) mpeg file is encrypted in MCU.
Here, MCU includes mainly three modules, respectively：Memory module, encrypting module, communication module；Wherein, it stores
The mpeg file that module is used to send over FPR sensors caches, and encrypting module is used to that mpeg file to be encrypted,
And encrypted mpeg file is sent to by Host drivers by communication module.
In one embodiment, MCU can clear up the content stored in memory module, such as：When memory module
When capacity is full, part or all of stored mpeg file is deleted；Again for example：When certain partial content in memory module
Storage duration be more than threshold value when, delete this partial content.
3) encrypted mpeg file is sent to Host drivers and handled by MCU.
4) encrypted mpeg file is decrypted in Host drivers, obtains multiple image datas, assesses multiple picture numbers
According to picture quality, determine the highest fingerprint image of picture quality；Then, if the quality for stating fingerprint image meets mesh
The fingerprint image is then stored in as fingerprint template in fingerprint database by mark condition.
If the picture quality of image data meets goal condition enough, described image data are stored in fingerprint database
It is middle to be used as fingerprint template.
Here, the effect of fingerprint template is the fingerprint arrived for matching subsequent acquisition, according to matching result and then executes phase
The operation answered.
If 5) quality of the fingerprint image is unsatisfactory for the goal condition, Host drivers delete the fingerprint image
Picture.
If 6) quality of the fingerprint image is unsatisfactory for the goal condition, the Host drivers are sent out to UI modules
The first instruction information, the first instruction information is sent to be used to indicate user and re-type finger print information.
7) the Host drivers send the second instruction information to the sensor, and the second instruction information is used to indicate
The sensor preparation for acquiring finger print data.
Fig. 5 is the structure composition schematic diagram of the electronic equipment of the embodiment of the present invention, as shown in figure 5, the electronic equipment packet
It includes：Sensor 501, first processor 502, host driver 503；
Wherein,
The sensor 501, for acquiring the finger print data in the first duration, based on the fingerprint number in first duration
According to generation video file；
The first processor 502, for the video file to be encrypted, and by the encrypted video file
It is sent to host driver 503；
The host driver 503 for obtaining fingerprint image from the video file, and is based on the fingerprint image
Quality determine whether using the fingerprint image as fingerprint template.
In one embodiment, described first when a length of target object touch the duration of the sensor 501；The sensing
Device 501 generates mpeg file for acquiring the finger print data in the first duration based on the finger print data in first duration.
In one embodiment, storage unit is provided on the first processor 502, the sensor 501, being used for will
The video file is sent to the first processor 502, by the first processor 502 by the video file store to
The storage unit.
In one embodiment, the host driver 503, for determining whether the quality of the fingerprint image meets mesh
Mark condition；If the quality for stating fingerprint image meets goal condition, stored the fingerprint image as fingerprint template
In fingerprint database；If the quality of the fingerprint image is unsatisfactory for the goal condition, the fingerprint image is deleted.
In one embodiment, if the quality of the fingerprint image is unsatisfactory for the goal condition, the host drives
Dynamic device 503 is additionally operable to send the first instruction information to user interface UI modules, and the first instruction information is used to indicate user's weight
New typing finger print information.
In one embodiment, the host driver 503 is additionally operable to send the second instruction letter to the sensor 501
Breath, the second instruction information are used to indicate 501 preparation for acquiring finger print data of the sensor.
It will be appreciated by those skilled in the art that before the realization function of each module in electronic equipment shown in fig. 5 can refer to
It states the associated description of data processing method and understands.The function of each unit in electronic equipment shown in fig. 5 can be by running on
Program on processor and realize, can also be realized by specific logic circuit.
If the above-mentioned resource instruction device of the embodiment of the present invention is realized in the form of software function module and as independent
Product is sold or in use, can also be stored in a computer read/write memory medium.Based on this understanding, of the invention
Substantially the part that contributes to existing technology can embody the technical solution of embodiment in the form of software products in other words
Out, which is stored in a storage medium, including some instructions are used so that a computer equipment
(can be personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read Only Memory), magnetic disc
Or the various media that can store program code such as CD.In this way, the embodiment of the present invention is not limited to any specific hardware
It is combined with software.
Correspondingly, the embodiment of the present invention also provides a kind of computer storage media, wherein being stored with, computer is executable to be referred to
It enables, the above-mentioned resource indicating method of the embodiment of the present invention is realized when which is executed by processor.
It, in the absence of conflict, can be in any combination between technical solution recorded in the embodiment of the present invention.
In several embodiments provided by the present invention, it should be understood that disclosed method and smart machine, Ke Yitong
Other modes are crossed to realize.Apparatus embodiments described above are merely indicative, for example, the division of the unit, only
Only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as：Multiple units or component can be tied
It closes, or is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each group
At the mutual coupling in part or direct-coupling or communication connection can be by some interfaces, equipment or unit it is indirect
Coupling or communication connection, can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be and be physically separated, aobvious as unit
The component shown can be or may not be physical unit, you can be located at a place, may be distributed over multiple network lists
In member；Some or all of wherein unit can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a second processing unit,
Can also be each unit individually as a unit, it can also be during two or more units be integrated in one unit；
The form that hardware had both may be used in above-mentioned integrated unit is realized, the form that hardware adds SFU software functional unit can also be used real
It is existing.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (10)
1. a kind of data processing method, the method includes：
Sensor acquires the finger print data in the first duration, and video file is generated based on the finger print data in first duration；
The video file is encrypted in first processor, and the encrypted video file is sent to host driven
Device；
The host driver obtains fingerprint image from the video file, and is based on the determination of the quality of the fingerprint image
It is no using the fingerprint image as fingerprint template.
2. according to the method described in claim 1, it is characterized in that, a length of target object of described first when touches the sensor
Duration；
The sensor acquires the finger print data in the first duration, and video text is generated based on the finger print data in first duration
Part, including：
The sensor acquires the finger print data in the first duration, and MPEG texts are generated based on the finger print data in first duration
Part.
3. according to the method described in claim 1, it is characterized in that, the method further includes：
The video file is sent to the first processor by the sensor, by the first processor to the video
File is stored.
4. according to the method described in claim 1, it is characterized in that, the quality based on the fingerprint image determine whether by
The fingerprint image as fingerprint template, including：
If the quality for stating fingerprint image meets goal condition, finger is stored in using the fingerprint image as fingerprint template
In line database；
If the quality of the fingerprint image is unsatisfactory for the goal condition, the fingerprint image is deleted.
5. according to the method described in claim 4, it is characterized in that, the method further includes：
If the quality of the fingerprint image is unsatisfactory for the goal condition, the host driver is to user interface UI modules
The first instruction information is sent, the first instruction information is used to indicate user and re-types finger print information.
6. according to the method described in claim 5, it is characterized in that, the method further includes：
The host driver sends the second instruction information to the sensor, and the second instruction information is used to indicate the biography
Sensor preparation for acquiring finger print data.
7. a kind of electronic equipment, the electronic equipment include：Sensor, first processor, host driver；Wherein,
The sensor is generated for acquiring the finger print data in the first duration based on the finger print data in first duration
Video file；
The first processor is sent to for the video file to be encrypted, and by the encrypted video file
Host driver；
The host driver, for obtaining fingerprint image from the video file, and based on the quality of the fingerprint image
Determine whether using the fingerprint image as fingerprint template.
8. electronic equipment according to claim 7, which is characterized in that it is provided with storage unit on the first processor,
The sensor is regarded by the first processor by described in for the video file to be sent to the first processor
Frequency file is stored to the storage unit.
9. electronic equipment according to claim 7, which is characterized in that the host driver, for determining the fingerprint
Whether the quality of image meets goal condition；If the quality for stating fingerprint image meets goal condition, by the fingerprint
Image is stored in as fingerprint template in fingerprint database；If the quality of the fingerprint image is unsatisfactory for the goal condition,
Then delete the fingerprint image.
10. a kind of computer storage media, is stored thereon with computer executable instructions, which is handled
Claim 1 to 6 any one of them method and step is realized when device executes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219303.0A CN108509874A (en) | 2018-03-16 | 2018-03-16 | A kind of data processing method and electronic equipment, computer storage media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219303.0A CN108509874A (en) | 2018-03-16 | 2018-03-16 | A kind of data processing method and electronic equipment, computer storage media |
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Family
ID=63376700
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