CN105814585A - Fingerprint processing method and device, fingerprint recognition system, and electronic equipment - Google Patents
Fingerprint processing method and device, fingerprint recognition system, and electronic equipment Download PDFInfo
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- 238000012545 processing Methods 0.000 claims abstract description 88
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 112
- 238000010200 validation analysis Methods 0.000 claims description 13
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1347—Preprocessing; Feature extraction
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Abstract
The invention discloses a fingerprint processing method for a fingerprint recognition system, and the fingerprint recognition system comprises a press-type fingerprint sensor, and the press-type fingerprint sensor comprises a sensing electrode array. When the fingerprint recognition works in a mode of fingerprint registration, the method comprises the steps: obtaining a plurality of fingerprint images scanned by the press-type fingerprint sensor when a finger of a user slides from the sensing electrode array; screening the plurality of obtained fingerprint images; extracting the characteristic values of the screened fingerprint images; removing one group of the screened binary fingerprint images with the same characteristic values; storing the characteristic values of the fingerprint images after removing into a registration template. The invention also discloses a fingerprint processing device, a finger recognition system, and electronic equipment.
Description
Technical field
The present invention relates to fingerprint sensing technical field, particularly relate to a kind of finger prints processing method, finger prints processing device, fingerprint recognition system and there is the electronic equipment of described fingerprint recognition system.
Background technology
Along with the development of safe practice, fingerprint recognition obtains everybody attention gradually, and its application is more and more wider.At present, the fingerprint recognition system of electronic equipment needs user first to carry out fingerprint register, forms fingerprint template.After fingerprint register success, when user is as used unlocked by fingerprint, fingerprint recognition system is by scanning the fingerprint that is currently entered of user, and compares confirmations with the fingerprint template of earlier registration, and when comparison success, then unlocked by fingerprint is successful, and otherwise unlocked by fingerprint is failed.
At present, the fingerprint recognition system of electronic equipment generally adopts pressing type fingerprint sensor, such as, the mobile terminals such as iPhone5s, iPhone6, iPhone6s of American apple company are employing pressing type fingerprint sensor, when performing fingerprint register, described fingerprint recognition system only obtains a fingerprint image for user's touch operation on pressing type fingerprint sensor every time, after user needs tens times even touch operation of twenties times, fingerprint recognition system just can get abundant fingerprint image to be spliced into the fingerprint template that subsequent fingerprint checking needs.The time that such registration process needs cost user more carries out fingerprint register, therefore, has the electronic equipment hommization not enough of described fingerprint recognition system.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of shorter finger prints processing method of fingerprint register time, finger prints processing device, fingerprint recognition system and electronic equipment.
For achieving the above object, the present invention provides following technical scheme:
A kind of finger prints processing method of fingerprint recognition system, described fingerprint recognition system includes pressing type fingerprint sensor, described pressing type fingerprint sensor includes sensor electrode array, and when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method includes:
When the finger of user is out-of-date from sensor electrode array slip up, obtain multiple fingerprint images obtained by described pressing type fingerprint sensor scans；
Multiple fingerprint images described in acquiring are screened；
Extract the eigenvalue of the fingerprint image after screening；
In the same characteristic features value of two adjacent fingerprint images after rejecting screening one group；
Store the eigenvalue of the fingerprint image after rejecting processes in enrollment.
Alternatively, described fingerprint image is screened, including:
Calculate, according to multiple fingerprint images described in acquiring, the distance that the finger of user slides on pressing type fingerprint sensor, carry out the screening of fingerprint image according to the distance of described slip；Or
The time slided on pressing type fingerprint sensor according to finger carries out the screening of fingerprint image；Or
The distance slided on pressing type fingerprint sensor according to finger and the time of slip carry out the screening of fingerprint image；Or
The screening of fingerprint image is carried out according to the equitant area of adjacent fingerprint image acquired.
Alternatively, when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method farther includes:
By described pressing type fingerprint sensor scans fingerprint, after judging that the finger of user is placed on described sensor electrode array according to the fingerprint situation scanned, user is pointed out to slide finger.
Alternatively, when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method farther includes:
By described pressing type fingerprint sensor scans fingerprint, after judging that according to the fingerprint situation that scans finger is placed on described sensor electrode array and finger covers the predetermined percentage of area that the area of described pressing type fingerprint sensor is not less than described pressing type fingerprint sensor, user is pointed out to slide finger.
Alternatively, described predetermined percentage is 50%.
Alternatively, when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method farther includes:
Judging that whether the quantity of information of the fingerprint image after screening is enough, if enough, prompting is succeeded in registration, and otherwise points out the renewal of registration or re-registers；
Wherein, described quantity of information include screening after fingerprint image number whether more than predetermined number or/and whether the fingerprint image after screening obtains the area of fingerprint image more than predetermined area after splicing.
Alternatively, when fingerprint recognition system is operated in fingerprint authentication pattern, described finger prints processing method includes:
When the finger of user touches or presses described pressing type fingerprint sensor, obtain the fingerprint image obtained by described pressing type fingerprint sensor scans；With
When under Validation Mode obtain fingerprint image or the eigenvalue of fingerprint image corresponding with the eigenvalue of the fingerprint image in enrollment or fingerprint image compared with meet predetermined condition time, then confirm authentication pass through, otherwise confirm authentication failure.
Alternatively, when registration mode, when the finger of user is out-of-date from sensor electrode array slip up, obtain and scanned, by all or part of scanning area on described pressing type fingerprint sensor, multiple fingerprint images obtained.
Alternatively, when registration mode, fingerprint image after screening includes multiple, overlap between fingerprint image adjacent in multiple fingerprint images after described screening, or, have non-overlapping between fingerprint image adjacent in multiple fingerprint images after described screening, or, overlap is had between the fingerprint image that in multiple fingerprint images after described screening, part is adjacent, non-overlapping between the fingerprint image that part is adjacent.
A kind of finger prints processing device of fingerprint recognition system, described fingerprint recognition system includes pressing type fingerprint sensor, described pressing type fingerprint sensor includes sensor electrode array, described finger prints processing device includes acquisition module, processing module and memory module, described processing module includes the first sub-processing module, the second sub-processing module and the 3rd sub-processing module, when fingerprint recognition system is operated in fingerprint register pattern:
Described acquisition module is for when the finger of user is out-of-date from sensor electrode array slip up, obtain multiple fingerprint images obtained by described pressing type fingerprint sensor scans；
Described first sub-processing module is for screening multiple fingerprint images described in acquiring；
Described second sub-processing module is used for the eigenvalue of multiple characteristic points of the fingerprint image after extracting screening；With
Described 3rd sub-processing module is for a group in the same characteristic features value of two adjacent fingerprint images after rejecting screening；With
Described memory module is used for the eigenvalue storing the fingerprint image after the 3rd sub-processing module rejecting processes in enrollment.
Alternatively, described first sub-processing module according to:
Multiple fingerprint images described acquired calculate the distance that the finger of user slides on pressing type fingerprint sensor, carry out the screening of fingerprint image according to the distance of described slip；Or
The time that finger slides on pressing type fingerprint sensor carries out the screening of fingerprint image；Or
The time of the distance that finger slides on pressing type fingerprint sensor and slip carries out the screening of fingerprint image；Or
The equitant area of adjacent fingerprint image acquired is to carry out the screening of fingerprint image.
Alternatively, described finger prints processing device farther includes reminding module, when fingerprint recognition system is operated in fingerprint register pattern, by described pressing type fingerprint sensor scans fingerprint, after judging that the finger of user is placed on described sensor electrode array according to the fingerprint situation that scans, described reminding module is used for pointing out user to slide finger.
Alternatively, described finger prints processing device farther includes reminding module, when fingerprint recognition system is operated in fingerprint register pattern, by described pressing type fingerprint sensor scans fingerprint, after pressing type fingerprint sensor or finger prints processing device judge that according to the fingerprint situation scanned the finger of user is placed on described sensor electrode array and finger covers the predetermined percentage of area that the area of described pressing type fingerprint sensor is not less than described pressing type fingerprint sensor, described reminding module prompting user slides finger.
Alternatively, described predetermined percentage is 50%.
Alternatively, described processing module farther includes the 4th sub-processing module, when fingerprint recognition system is operated in fingerprint register pattern, whether described 4th sub-processing module is enough for the quantity of information judging the fingerprint image after screening, if enough, reminding module then points out user registration success, and otherwise, reminding module is then pointed out user's renewal of registration or re-registers；
Wherein, described quantity of information include screening after fingerprint image number whether more than predetermined number or/and whether the fingerprint image after screening obtains the area of fingerprint image more than predetermined area after splicing.
Alternatively, under Validation Mode:
Described acquisition module is further used for when the finger of user touches or presses described pressing type fingerprint sensor, obtains the fingerprint image obtained by described pressing type fingerprint sensor scans；
Described processing module is for whether the eigenvalue of eigenvalue and the fingerprint image in enrollment or fingerprint image that correspondence compares fingerprint image or the fingerprint image obtained under described Validation Mode meets predetermined condition, if meeting, then confirm that authentication is passed through, otherwise, confirm authentication failure.
Alternatively, when registration mode, when the finger of user is out-of-date from sensor electrode array slip up, described acquisition module obtains and is scanned, by all or part of scanning area on described pressing type fingerprint sensor, multiple fingerprint images obtained.
Alternatively, when registration mode, fingerprint image after processing module screening includes multiple, overlap between fingerprint image adjacent in multiple fingerprint images after described screening, or, have non-overlapping between fingerprint image adjacent in multiple fingerprint images after described screening, or, overlap is had between the fingerprint image that in multiple fingerprint images after described screening, part is adjacent, non-overlapping between the fingerprint image that part is adjacent.
A kind of fingerprint recognition system, including:
Pressing type fingerprint sensor, including sensor electrode array, described pressing type fingerprint sensor is used for:
When registration mode, when the finger of user is at the out-of-date execution finger scan of described sensor electrode array slip up, so that described finger prints processing device obtains multiple fingerprint images；And
When Validation Mode, perform finger scan when the finger of user touches or is pressed against on described sensor electrode array, so that described finger prints processing device obtains fingerprint image；With
Finger prints processing device, for the finger prints processing device described in above-mentioned middle any one.
A kind of electronic equipment, including above-mentioned fingerprint recognition system.
Owing to the finger prints processing method of the application, finger prints processing device, fingerprint recognition system and electronic equipment obtain multiple fingerprint images when user slips over the sensor electrode array of pressing type fingerprint sensor, namely the mode of slip is adopted to obtain multiple fingerprint images on pressing type fingerprint sensor, and not such as a fingerprint image of prior art, therefore, the time less that user spends in the process of fingerprint register.
Although disclosing multiple embodiment, including its change, but by illustrate and describing the following detailed description of illustrative embodiment disclosed by the invention, other embodiments disclosed by the invention will be readily apparent to those skilled in the art.It will be recognized that disclosure can various apparent in amendment, all modifications is all without departing from the spirit and scope of the present invention.Correspondingly, accompanying drawing and detailed description substantially should be considered illustrative and not restrictive.
Accompanying drawing explanation
Its example embodiment, inventive feature and advantage are described in detail by referring to accompanying drawing will be apparent from.
Fig. 1 is the structural representation of an embodiment of fingerprint recognition system of the present invention.
Fig. 2 is the structural representation of electronic equipment of the present invention.
Fig. 3 is the flow chart of the fingerprint recognition system of present invention finger prints processing method when being operated in fingerprint register pattern.
Fig. 4 is the flow chart of the fingerprint recognition system of present invention finger prints processing method when being operated in fingerprint authentication pattern.
Detailed description of the invention
It is described more fully with example embodiment referring now to accompanying drawing.But, example embodiment can be implemented in a variety of forms, and is not understood as limited to embodiment set forth herein；On the contrary, it is provided that these embodiments make the present invention will fully and completely, and the design of example embodiment is conveyed to those skilled in the art all sidedly.
Additionally, described feature, structure can be combined in one or more embodiment in any suitable manner.In the following description, it is provided that many details are thus providing fully understanding embodiments of the present invention.But, one of ordinary skill in the art would recognize that, it does not have one or more in described specific detail, or adopt other structure, constituent element etc., it is also possible to put into practice technical scheme.In other cases, known features or operation are not shown in detail or describe to avoid the fuzzy present invention.
Further, in describing the invention, it is to be understood that: " multiple " include two and more than two, unless the present invention separately has clearly concrete restriction.It addition, words such as " first ", " second " that occur in each element title is not the sequencing that restriction element occurs, but for convenience of element name, each element of clear differentiation so that describe more succinct.
Refer to the structural representation that Fig. 1, Fig. 1 are fingerprint recognition system of the present invention.Described fingerprint recognition system 100 includes pressing type fingerprint sensor 10 and finger prints processing device 20.Described pressing type fingerprint sensor 10 is connected with described finger prints processing device 20.
Described fingerprint recognition system 100 is used for performing fingerprint sensing, it mainly includes three kinds of mode of operations, respectively fingerprint register pattern, fingerprint authentication pattern and fingerprint nullify pattern, and these three mode of operation can be also simply referred to as registration mode, Validation Mode and cancellation pattern.Wherein, the fingerprint image of new user collected or the eigenvalue of fingerprint image, for increasing the fingerprint of new user, are stored in enrollment or fingerprint database by fingerprint register pattern.Fingerprint authentication pattern is by mating corresponding with fingerprint database to the fingerprint image of user or the eigenvalue of the fingerprint image fingerprint image of storage or the eigenvalue of fingerprint image, thus verifying whether user fingerprints is the fingerprint once registered.Fingerprint nullifies pattern for the fingerprint image of registered mistake or the eigenvalue of fingerprint image being deleted from fingerprint database.
Described pressing type fingerprint sensor 10 includes sensor electrode array 11.Described sensor electrode array 11 includes multiple electrode 111.The plurality of sensing electrode 111 is for receiving the fingerprint input of user.Described pressing type fingerprint sensor 10 is such as capacitive fingerprint sensing device, optical fingerprint sensor, ultrasonic type fingerprint sensor etc..For capacitive fingerprint sensing device, the plurality of sensing electrode 111 is for forming electric capacity respectively with the ridge of the finger print of user and paddy, different by the electric capacity of formation between ridge, paddy and sensing electrode 111, the scanning of described capacitive fingerprint sensing device correspondence obtains fingerprint image.The operation principle of the fingerprint sensor that optical fingerprint sensor and ultrasonic type fingerprint sensor etc. have sensor electrode array repeats no more herein.
When registration mode, described pressing type fingerprint sensor 10 is for being scanned the finger print slipped on sensor electrode array 11, so that described finger prints processing device 20 obtains multiple fingerprint pictures.When registration mode, the region at described sensor electrode array 11 place is scanning area.So, change ground, in other embodiments, the subregion in the region at described sensor electrode array 11 place be scanning area it is also possible that.
When Validation Mode, described pressing type fingerprint sensor 10 is for being scanned the finger print touching on sensor electrode array 11 or pressing, so that finger prints processing device 20 obtains the fingerprint image for verifying.Validation Mode, described pressing type fingerprint sensor 10 touching or pressing one fingerprint image of collection for user's finger every time.Wherein, described touch such as includes slide.
Described finger prints processing device 20 includes acquisition module 21, processing module 23 and memory module 25.When registration mode, described acquisition module 21 is used for, when the finger of user is out-of-date from sensor electrode array 11 slip up, obtaining and being scanned, by described pressing type fingerprint sensor 10, multiple fingerprint images obtained.Described processing module 23 includes first sub-processing module the 230, second sub-processing module 231 and the 3rd sub-processing module 232.Described first sub-processing module 230 is for screening multiple fingerprint images described in acquiring.Described second sub-processing module 231 is used for the eigenvalue of multiple characteristic points of the fingerprint image after extracting screening.Described 3rd sub-processing module 232 is for a group in the same characteristic features value of two adjacent fingerprint images after rejecting screening.Described memory module 25 is used for the eigenvalue storing the fingerprint image after the 3rd sub-processing module 232 rejecting processes in enrollment.
Gather the mode of a fingerprint image compared to pressing type fingerprint sensor in prior art every time, the fingerprint recognition system 100 of the application can once obtain multiple fingerprint images by adopting the mode that slidingtype gathers fingerprint on pressing type fingerprint sensor 10, just can complete fingerprint register thereby through sliding once or several times, and then reduce hour of log-on.
Further, multiple fingerprint images got are screened by described finger prints processing device 20, extract the eigenvalue of multiple characteristic points of the fingerprint image after screening, and a group in the same characteristic features value of two adjacent fingerprint images after rejecting screening, and the eigenvalue of the fingerprint image that storage is after the 3rd sub-processing module 232 rejecting processes is in enrollment, registration step is also relatively simple, thus shortening the fingerprint register time further.
In the present embodiment, when the adjacent fingerprint image after screening has overlap, then a group in the same characteristic features value of adjacent fingerprint image overlapped region is rejected.
Fingerprint image after the screening of described processing module 23 such as includes multiple.So, the fingerprint image after the screening of described processing module 23 is alternatively one.
Such as overlap between fingerprint image adjacent in multiple fingerprint images after screening.So, also can be non-overlapping between adjacent fingerprint image.Also overlap can be had between partial fingerprints image between adjacent fingerprint image, non-overlapping between partial fingerprints image.
Described first processes submodule 230 basis:
Multiple fingerprint images described acquired calculate the distance that the finger of user slides on pressing type fingerprint sensor 10, carry out the screening of fingerprint image according to the distance of described slip；Or
The time that finger slides on pressing type fingerprint sensor 10 carries out the screening of fingerprint image；Or
The time of the distance that finger slides on pressing type fingerprint sensor 10 and slip carries out the screening of fingerprint image；Or
The equitant area of adjacent fingerprint image acquired is to carry out the screening of fingerprint image.
Wherein, the distance slided on pressing type fingerprint sensor 10 according to finger carries out the screening of fingerprint image, for instance, it is possible to screen a fingerprint image out every preset space length.
The time slided on pressing type fingerprint sensor 10 according to finger carries out the screening of fingerprint image, for instance, it is possible to screen a fingerprint image out every predetermined time interval.
The distance slided on pressing type fingerprint sensor 10 according to finger and the time of slip carry out the screening of fingerprint image, owing to knowing the time of distance that finger slides on pressing type fingerprint sensor 10 and slip, may thereby determine that the speed that finger slides on pressing type fingerprint sensor 10, therefore, the speed conditions can such as slided according to user again selects screening fingerprint image.
The screening of fingerprint image is carried out according to the equitant area of adjacent fingerprint image acquired, such as first fingerprint image and the second fingerprint image overlap, second fingerprint image and the 3rd fingerprint image overlap, when first fingerprint image and second equitant area of fingerprint image are more than first fingerprint image and the 3rd equitant area of fingerprint image, and equitant area is when being above predetermined value, then give up second fingerprint image.Simply illustrating, the equitant area of fingerprint image and the number given up are not particularly limited to by the application, can set according to the situation difference correspondence of such as product brand etc. herein.
Referring again to Fig. 1, described finger prints processing device 20 can farther include reminding module 27.Described reminding module 27 is for when entering registration mode, fingerprint is scanned by described pressing type fingerprint sensor 10, after according to the fingerprint situation scanned, described pressing type fingerprint sensor 10 judges that the finger of user is placed on described sensor electrode array 11, prompting user slides finger.
Described pressing type fingerprint sensor 10 can farther include scan module 13 and judge module 15.Described scan module 13 such as provides scanning signal to sensing electrode 111, drives sensing electrode 111 to perform fingerprint sensing, and the sensing signal according to sensing electrode 111 output obtains finger print information.The fingerprint situation that described judge module 15 obtains according to scan module 13 scanning judges whether the finger of user is placed on described sensor electrode array 11.When judging to learn that the finger of user is placed on described sensor electrode array 11, then output signal to reminding module 27, to point out user to slide finger；When judging to learn that the finger of user is not placed on described sensor electrode array 11, then do not output signal to reminding module 27.In this embodiment, described judge module 15 is arranged in described pressing type fingerprint sensor 10, so, changes ground, and in other embodiments, described judge module 15 may also be arranged in described finger prints processing device 20.
Change ground further, when registration mode, fingerprint is scanned by described pressing type fingerprint sensor 10, after judging that according to the fingerprint situation that scans the finger of user is placed on described sensor electrode array 11 and the area of the finger described pressing type fingerprint sensor 10 of covering is not less than the predetermined percentage of area of described pressing type fingerprint sensor 10, described reminding module 27 points out user to slide finger.Accordingly, whether described judge module 15 is not less than the predetermined percentage of the area of pressing type fingerprint sensor 10 except the area covering described pressing type fingerprint sensor 10 for judging whether the finger of user is placed on described sensor electrode array 11, be additionally operable to judge the finger of user.
Described percentage is as a numerical value in 40% to 100% scope, being such as specifically 50%, certainly, it is possible to be set as other appropriate percentage such as 40% or 60% according to demand.
Alternatively, described processing module 23 farther includes the 4th sub-processing module 231.Whether described 4th sub-processing module 231 is enough for the quantity of information judging the fingerprint image after screening, if enough, reminding module 27 then points out user registration success, and otherwise, reminding module 27 is then pointed out user's renewal of registration or re-registers.Wherein, described quantity of information include screening after fingerprint image number whether more than predetermined number or/and whether the fingerprint image after screening obtains the area of fingerprint image more than predetermined area after splicing.
It should be noted that, in the present embodiment, the fingerprint image that screening obtains first is stored in memory module 25 by processing module 23, then whether the quantity of information of the fingerprint image after judging screening is enough, as enough, then it is retained in the fingerprint image in memory module 25, otherwise, for instance the erasable fingerprint image stored.
So, changing ground, in other embodiments, processing module 23 also can first judge that whether the quantity of information of the fingerprint image after screening is enough, as enough, then storage fingerprint image is in memory module, otherwise, abandons the fingerprint image screened.It addition, processing module 23 is alternatively limit judges that whether the quantity of information of the fingerprint image after screening is enough, the fingerprint image after the storage screening of limit.
When Validation Mode, described acquisition module 21 is additionally operable to when the finger of user touches or presses described pressing type fingerprint sensor 10, obtains and scanned, by described pressing type fingerprint sensor 10, the fingerprint image obtained.
Described processing module 23 is additionally operable to whether the eigenvalue of eigenvalue and the fingerprint image in the stored enrollment of memory module 25 or fingerprint image that correspondence compares fingerprint image or the fingerprint image obtained under described Validation Mode meets predetermined condition, if meeting, then confirm that authentication is passed through, otherwise, authentication failure is confirmed.
The fingerprint recognition system 100 of the application adopts the mode slided to gather fingerprint image, and therefore, user slides once on pressing type fingerprint sensor 10 or several times finger can complete fingerprint register, thus shortening the fingerprint register time.Additionally, owing to the fingerprint image got is screened by the application when registered fingerprint template, and store the eigenvalue of the fingerprint image after screening or fingerprint image in enrollment, thus shorten the fingerprint register time further so that fingerprint recognition system 100 hommization more.
Refer to the structural representation of the embodiment that Fig. 2, Fig. 2 are electronic equipment of the present invention.Described electronic equipment 1 is as portable electronic product or household formula electronic product.Wherein, portable electronic product is as various mobile terminals, for instance, each electronic product such as mobile phone, panel computer, notebook computer and Wearable product；Household formula electronic product is as each electronic product such as intelligent door lock, TV, refrigerator, desktop computers.In the present embodiment, described electronic equipment 1 is to illustrate for mobile phone, so, from the foregoing it will be appreciated that described electronic equipment 1 is not limited to mobile phone, when the electronic equipment suitable for other, even if or when being mobile phone, the position of described fingerprint recognition system 100 is not limited to the position shown in Fig. 2, it is possible to for the position that other is suitable, it is not limited to the front of electronic equipment 1, it is possible to be arranged on inside or the back, side etc. of electronic equipment 1.
Described electronic equipment 1 includes described fingerprint recognition system 100.Described fingerprint recognition system 100 is used for performing fingerprint sensing, and described electronic equipment 1 controls whether to perform corresponding function according to the finger print information correspondence that described fingerprint recognition system 100 senses.Corresponding function such as includes solving screen, pays, starts application program (e.g., wechat etc.), logins file etc..
Refer to the flow chart of finger prints processing method when the fingerprint recognition system that Fig. 3, Fig. 3 are the present invention is operated in fingerprint register pattern.Described fingerprint recognition system is such as the fingerprint recognition system 100 shown in Fig. 1.When fingerprint recognition system 100 is operated in fingerprint register pattern, described finger prints processing method includes:
Step S102: when the finger of user is out-of-date from sensor electrode array 11 slip up, obtains and is scanned, by described pressing type fingerprint sensor 10, multiple fingerprint images obtained；
Step S103: multiple fingerprint images described in acquiring are screened；
Step S104: extract the eigenvalue of the fingerprint image after screening；
Step S105: a group in the same characteristic features value of two adjacent fingerprint images after rejecting screening；With
Step S106: store the eigenvalue of the fingerprint image after rejecting processes in enrollment.
Multiple fingerprint images described in acquiring are screened by step S103, including:
Calculate, according to multiple fingerprint images described in acquiring, the distance that the finger of user slides on pressing type fingerprint sensor 10, carry out the screening of fingerprint image according to the distance of described slip；Or
The time slided on pressing type fingerprint sensor 10 according to finger carries out the screening of fingerprint image；Or
The distance slided on pressing type fingerprint sensor 10 according to finger and the time of slip carry out the screening of fingerprint image；Or
The screening of fingerprint image is carried out according to the equitant area of adjacent fingerprint image acquired.
Wherein, the distance slided on pressing type fingerprint sensor 10 according to finger carries out the screening of fingerprint image, for instance, it is possible to screen a fingerprint image out every preset space length.
The time slided on pressing type fingerprint sensor 10 according to finger carries out the screening of fingerprint image, for instance, it is possible to screen a fingerprint image out every predetermined time interval.
The distance slided on pressing type fingerprint sensor 10 according to finger and the time of slip carry out the screening of fingerprint image, owing to knowing the time of distance that finger slides on pressing type fingerprint sensor 10 and slip, may thereby determine that the speed that finger slides on pressing type fingerprint sensor 10, therefore, the speed conditions can such as slided according to user again selects screening fingerprint image.
The screening of fingerprint image is carried out according to the equitant area of adjacent fingerprint image acquired, such as first fingerprint image and the second fingerprint image overlap, second fingerprint image and the 3rd fingerprint image overlap, when first fingerprint image and second equitant area of fingerprint image are more than first fingerprint image and the 3rd equitant area of fingerprint image, and equitant area is when being above predetermined value, then give up second fingerprint image.Simply illustrating, the equitant area of fingerprint image and the number given up are not particularly limited to by the application, can set according to the situation difference correspondence of such as product brand etc. herein.
When fingerprint recognition system 100 is operated in fingerprint register pattern, described finger prints processing method such as can farther include:
Step S101: scan fingerprint by described pressing type fingerprint sensor 10, after judging that the finger of user is placed on described sensor electrode array 11 according to the fingerprint situation that scans, points out user to slide finger.
So, changing ground, for step S101, it is alternatively:
Fingerprint is scanned by described pressing type fingerprint sensor 10, after judging that according to the fingerprint situation that scans finger is placed on described sensor electrode array 11 and finger covers the predetermined percentage of area that the area of described pressing type fingerprint sensor 10 is not less than described pressing type fingerprint sensor 10, user is pointed out to slide finger.
Described percentage is as a numerical value in 40% to 100% scope, being such as specifically 50%, certainly, it is possible to be set as other appropriate percentage such as 40% or 60% according to demand.
Further, for step S105, when the adjacent fingerprint image after screening has overlap, then reject a group in the same characteristic features value of adjacent fingerprint image overlapped region.
When fingerprint recognition system 100 is operated in fingerprint register pattern, described finger prints processing method can farther include:
Step S107: judging that whether the quantity of information of the fingerprint image after screening is enough, if enough, prompting is succeeded in registration, and otherwise points out the renewal of registration or re-registers.
Wherein, described quantity of information include screening after fingerprint image number whether more than predetermined number or/and whether the fingerprint image after screening obtains the area of fingerprint image more than predetermined area after splicing.
It should be noted that, in the present embodiment, described finger prints processing method is first to store in enrollment by the fingerprint image that screening obtains, then whether the quantity of information of the fingerprint image after judging screening is enough, as enough, then retain the fingerprint image stored, otherwise, for instance the erasable fingerprint image stored.
So, changing ground, in other embodiments, described finger prints processing method also can first judge that whether the quantity of information of the fingerprint image after screening is enough, as enough, then storage fingerprint image is in memory module, otherwise, abandons the fingerprint image screened.It addition, described finger prints processing method is alternatively limit judges that whether the quantity of information of the fingerprint image after screening is enough, the fingerprint image after the storage screening of limit.
In step s 102, when the finger of user is out-of-date from sensor electrode array slip up, obtain and scanned, by all or part of scanning area on described pressing type fingerprint sensor 10, multiple fingerprint images obtained.
In step s 103, fingerprint image after screening includes multiple, overlap between fingerprint image adjacent in multiple fingerprint images after described screening, or, have non-overlapping between fingerprint image adjacent in multiple fingerprint images after described screening, or, there is overlap between the fingerprint image that in multiple fingerprint images after described screening, part is adjacent, non-overlapping between the fingerprint image that part is adjacent.
Refer to the flow chart of finger prints processing method when the fingerprint recognition system that Fig. 4, Fig. 4 are the present invention is operated in fingerprint authentication pattern.Described fingerprint recognition system is such as the fingerprint recognition system 100 shown in Fig. 1.Described finger prints processing method includes:
S201: when the finger of user touches or presses described pressing type fingerprint sensor 10, obtain and scanned, by described pressing type fingerprint sensor 10, the fingerprint image obtained；With
S202: when under Validation Mode obtain fingerprint image or the eigenvalue of fingerprint image corresponding with the eigenvalue of the fingerprint image in enrollment or fingerprint image compared with meet predetermined condition time, then confirm authentication pass through, otherwise confirm authentication failure.
Owing to described finger prints processing method is when fingerprint register pattern, the method for slidingtype is adopted to gather fingerprint image at pressing type fingerprint sensor 10, such that it is able to reduce hour of log-on.Additionally, owing to the fingerprint image got is screened by described finger prints processing method when registered fingerprint template, and store the eigenvalue of the fingerprint image after screening or fingerprint image in enrollment, thus shorten the fingerprint register time further so that fingerprint recognition system 100 hommization more.
It should be noted that in other embodiments, the sequencing of the step of above-mentioned finger prints processing method also can corresponding adjust, additionally, it is possible to omits some of which step or increases other step.
Although being to describe disclosure with reference to each embodiment, it will be appreciated that these embodiments are illustrative, and the scope of the present invention is not limited only to them.Many changes, amendment, interpolation and improvement are all possible.More generally, describe in the context of specific embodiments according to each embodiment disclosed by the invention.Function in each embodiment disclosed by the invention during the course in a different manner separately or in combination, or can utilize different terms to describe.These and other change, amendment, add and improve can in the scope disclosed by the invention that such as following claims book is defined.
Claims (20)
1. the finger prints processing method of a fingerprint recognition system, described fingerprint recognition system includes pressing type fingerprint sensor, described pressing type fingerprint sensor includes sensor electrode array, and when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method includes:
When the finger of user is out-of-date from sensor electrode array slip up, obtain multiple fingerprint images obtained by described pressing type fingerprint sensor scans；
Multiple fingerprint images described in acquiring are screened；
Extract the eigenvalue of the fingerprint image after screening；
In the same characteristic features value of two adjacent fingerprint images after rejecting screening one group；
Store the eigenvalue of the fingerprint image after rejecting processes in enrollment.
2. finger prints processing method according to claim 1, it is characterised in that: multiple fingerprint images described in acquiring are screened, including:
Calculate, according to multiple fingerprint images described in acquiring, the distance that the finger of user slides on pressing type fingerprint sensor, carry out the screening of fingerprint image according to the distance of described slip；Or
The time slided on pressing type fingerprint sensor according to finger carries out the screening of fingerprint image；Or
The distance slided on pressing type fingerprint sensor according to finger and the time of slip carry out the screening of fingerprint image；Or
The screening of fingerprint image is carried out according to the equitant area of adjacent fingerprint image acquired.
3. finger prints processing method according to claim 1, it is characterised in that: when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method farther includes:
By described pressing type fingerprint sensor scans fingerprint, after judging that the finger of user is placed on described sensor electrode array according to the fingerprint situation scanned, user is pointed out to slide finger.
4. the finger prints processing method according to any one in claim 1-3, it is characterised in that: when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method farther includes:
By described pressing type fingerprint sensor scans fingerprint, after judging that according to the fingerprint situation that scans finger is placed on described sensor electrode array and finger covers the predetermined percentage of area that the area of described pressing type fingerprint sensor is not less than described pressing type fingerprint sensor, user is pointed out to slide finger.
5. finger prints processing method according to claim 4, it is characterised in that: described predetermined percentage is 50%.
6. the finger prints processing method according to any one in claim 1-3, it is characterised in that: when fingerprint recognition system is operated in fingerprint register pattern, described finger prints processing method farther includes:
Judging that whether the quantity of information of the fingerprint image after screening is enough, if enough, prompting is succeeded in registration, and otherwise points out the renewal of registration or re-registers；
Wherein, described quantity of information include screening after fingerprint image number whether more than predetermined number or/and whether the fingerprint image after screening obtains the area of fingerprint image more than predetermined area after splicing.
7. finger prints processing method according to claim 1, it is characterised in that: when fingerprint recognition system is operated in fingerprint authentication pattern, described finger prints processing method includes:
When the finger of user touches or presses described pressing type fingerprint sensor, obtain the fingerprint image obtained by described pressing type fingerprint sensor scans；With
When under Validation Mode obtain fingerprint image or the eigenvalue of fingerprint image corresponding with the eigenvalue of the fingerprint image in enrollment or fingerprint image compared with meet predetermined condition time, then confirm authentication pass through, otherwise confirm authentication failure.
8. finger prints processing method according to claim 1, it is characterized in that: when registration mode, when the finger of user is out-of-date from sensor electrode array slip up, obtain and scanned, by all or part of scanning area on described pressing type fingerprint sensor, multiple fingerprint images obtained.
9. finger prints processing method according to claim 1, it is characterized in that: when registration mode, fingerprint image after screening includes multiple, overlap between fingerprint image adjacent in multiple fingerprint images after described screening, or, have non-overlapping between fingerprint image adjacent in multiple fingerprint images after described screening, or, overlap is had between the fingerprint image that in multiple fingerprint images after described screening, part is adjacent, non-overlapping between the fingerprint image that part is adjacent.
10. the finger prints processing device of a fingerprint recognition system, described fingerprint recognition system includes pressing type fingerprint sensor, described pressing type fingerprint sensor includes sensor electrode array, described finger prints processing device includes acquisition module, processing module and memory module, described processing module includes the first sub-processing module, the second sub-processing module and the 3rd sub-processing module, when fingerprint recognition system is operated in fingerprint register pattern:
Described acquisition module is for when the finger of user is out-of-date from sensor electrode array slip up, obtain multiple fingerprint images obtained by described pressing type fingerprint sensor scans；
Described first sub-processing module is for screening multiple fingerprint images described in acquiring；
Described second sub-processing module is used for the eigenvalue of multiple characteristic points of the fingerprint image after extracting screening；With
Described 3rd sub-processing module is for a group in the same characteristic features value of two adjacent fingerprint images after rejecting screening；With
Described memory module is used for the eigenvalue storing the fingerprint image after the 3rd sub-processing module rejecting processes in enrollment.
11. finger prints processing device according to claim 10, it is characterised in that: described processing module includes screening module, and described screening module is for screening acquired multiple fingerprint images obtained of acquisition module；Described screening module according to:
Multiple fingerprint images described acquired calculate the distance that the finger of user slides on pressing type fingerprint sensor, carry out the screening of fingerprint image according to the distance of described slip；Or
The time that finger slides on pressing type fingerprint sensor carries out the screening of fingerprint image；Or
The time of the distance that finger slides on pressing type fingerprint sensor and slip carries out the screening of fingerprint image；Or
The equitant area of adjacent fingerprint image acquired is to carry out the screening of fingerprint image.
12. finger prints processing device according to claim 10, it is characterized in that: described finger prints processing device farther includes reminding module, when fingerprint recognition system is operated in fingerprint register pattern, by described pressing type fingerprint sensor scans fingerprint, after judging that the finger of user is placed on described sensor electrode array according to the fingerprint situation that scans, described reminding module is used for pointing out user to slide finger.
13. the finger prints processing device according to any one in claim 10-12, it is characterized in that: described finger prints processing device farther includes reminding module, when fingerprint recognition system is operated in fingerprint register pattern, by described pressing type fingerprint sensor scans fingerprint, when according to the fingerprint situation scanned, pressing type fingerprint sensor or finger prints processing device judge that the finger of user is placed on described sensor electrode array, and finger covers after the area of described pressing type fingerprint sensor is not less than the predetermined percentage of area of described pressing type fingerprint sensor, described reminding module prompting user slide finger.
14. finger prints processing device according to claim 13, it is characterised in that: described predetermined percentage is 50%.
15. the finger prints processing device according to any one in claim 10-12, it is characterized in that: described processing module farther includes the 4th sub-processing module, when fingerprint recognition system is operated in fingerprint register pattern, whether described 4th sub-processing module is enough for the quantity of information judging the fingerprint image after screening, if enough, reminding module then points out user registration success, and otherwise, reminding module is then pointed out user's renewal of registration or re-registers；
Wherein, described quantity of information include screening after fingerprint image number whether more than predetermined number or/and whether the fingerprint image after screening obtains the area of fingerprint image more than predetermined area after splicing.
16. finger prints processing device according to claim 10, it is characterised in that: when fingerprint recognition system is operated in fingerprint authentication pattern:
Described acquisition module is further used for when the finger of user touches or presses described pressing type fingerprint sensor, obtains the fingerprint image obtained by described pressing type fingerprint sensor scans；
Described processing module is for whether the eigenvalue of eigenvalue and the fingerprint image in enrollment or fingerprint image that correspondence compares fingerprint image or the fingerprint image obtained under described Validation Mode meets predetermined condition, if meeting, then confirm that authentication is passed through, otherwise, confirm authentication failure.
17. finger prints processing device according to claim 10, it is characterized in that: when registration mode, when the finger of user is out-of-date from sensor electrode array slip up, described acquisition module obtains and is scanned, by all or part of scanning area on described pressing type fingerprint sensor, multiple fingerprint images obtained.
18. finger prints processing device according to claim 10, it is characterized in that: when registration mode, fingerprint image after processing module screening includes multiple, overlap between fingerprint image adjacent in multiple fingerprint images after described screening, or, have non-overlapping between fingerprint image adjacent in multiple fingerprint images after described screening, or, overlap is had between the fingerprint image that in multiple fingerprint images after described screening, part is adjacent, non-overlapping between the fingerprint image that part is adjacent.
19. a fingerprint recognition system, including:
Pressing type fingerprint sensor, including sensor electrode array, described pressing type fingerprint sensor is used for:
When registration mode, when the finger of user is at the out-of-date execution finger scan of described sensor electrode array slip up, so that described finger prints processing device obtains multiple fingerprint images；And
When Validation Mode, perform finger scan when the finger of user touches or is pressed against on described sensor electrode array, so that described finger prints processing device obtains fingerprint image；With
Finger prints processing device, for the finger prints processing device described in any one in claim 10-18.
20. an electronic equipment, including the fingerprint recognition system described in claim 19.
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| PCT/CN2016/076656 WO2017156753A1 (en) | 2016-03-17 | 2016-03-17 | Fingerprint processing method, fingerprint processing device, fingerprint recognition system, and electronic device |
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