CN110287922A

CN110287922A - Fingerprint identification method and Related product

Info

Publication number: CN110287922A
Application number: CN201910581186.7A
Authority: CN
Inventors: 吴安平
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2019-09-27
Anticipated expiration: 2039-06-29
Also published as: CN110287922B

Abstract

The embodiment of the present application discloses a kind of fingerprint identification method and Related product, is applied to electronic equipment, and the electronic equipment includes ultrasonic fingerprint identification mould group, and wherein method includes: to identify that mould group obtains the first fingerprint image by the ultrasonic fingerprint；Image quality evaluation is carried out to first fingerprint image, obtains evaluation result；When the evaluation result is that fingerprint collecting fails, the running parameter of the ultrasonic fingerprint identification mould group is adjusted, target operating parameters are obtained；The ultrasonic fingerprint identification mould group is controlled according to the target operating parameters and carries out fingerprint collecting, obtains the second fingerprint image, second fingerprint image is operated for fingerprint recognition.The intelligence of ultrasonic fingerprint identification technology is able to ascend using the embodiment of the present application.

Description

Fingerprint identification method and Related product

Technical field

This application involves technical field of electronic equipment, and in particular to a kind of fingerprint identification method and Related product.

Background technique

With a large amount of popularization and applications of electronic equipment (such as mobile phone, tablet computer), what electronic equipment can be supported is answered With more and more, function is stronger and stronger, and electronic equipment develops towards diversification, personalized direction, becomes in user's life Indispensable appliance and electronic.

Fingerprint identification technology also becomes the standard configuration technology of electronic equipment, with the development of fingerprint identification technology, at present, Ultrasonic fingerprint identification mould group is increasingly by the favor of supplier, but ultrasonic fingerprint identifies the inadequate intelligence of mould group fingerprint collecting Energyization.

Summary of the invention

The embodiment of the present application provides a kind of fingerprint identification method and Related product, can promote ultrasonic fingerprint identification skill The intelligence of art.

In a first aspect, the embodiment of the present application provides a kind of electronic equipment, the electronic equipment includes processing circuit, Yi Jiyu The ultrasonic fingerprint of the processing circuit connection identifies mould group, wherein

The ultrasonic fingerprint identifies mould group, for obtaining the first fingerprint image；

The processing circuit obtains evaluation result for carrying out image quality evaluation to first fingerprint image；Institute When to state evaluation result be fingerprint collecting failure, the running parameter of ultrasonic fingerprint identification mould group is adjusted, target operation is obtained Parameter；

The ultrasonic fingerprint identifies mould group, is also used to control the ultrasonic fingerprint according to the target operating parameters and know Other mould group carries out fingerprint collecting, obtains the second fingerprint image, and second fingerprint image is operated for fingerprint recognition.

Second aspect, the embodiment of the present application provide a kind of fingerprint identification method and are applied to electronic equipment, the electronic equipment Mould group is identified including ultrasonic fingerprint；The described method includes:

Identify that mould group obtains the first fingerprint image by the ultrasonic fingerprint；

Image quality evaluation is carried out to first fingerprint image, obtains evaluation result；

When the evaluation result is that fingerprint collecting fails, the running parameter of the ultrasonic fingerprint identification mould group is adjusted, Obtain target operating parameters；

The ultrasonic fingerprint identification mould group is controlled according to the target operating parameters and carries out fingerprint collecting, obtains the second finger Print image, second fingerprint image are operated for fingerprint recognition.

The third aspect, the embodiment of the present application provide a kind of fingerprint identification device, are applied to electronic equipment, and the electronics is set Standby includes that ultrasonic fingerprint identifies mould group；Described device includes: acquiring unit, evaluation unit, adjustment unit, wherein

The acquiring unit, for identifying that mould group obtains the first fingerprint image by the ultrasonic fingerprint；

The evaluation unit obtains evaluation result for carrying out image quality evaluation to first fingerprint image；

The adjustment unit, for adjusting the ultrasonic fingerprint and knowing when the evaluation result is that fingerprint collecting fails The running parameter of other mould group, obtains target operating parameters；

The acquiring unit is also used to control the ultrasonic fingerprint identification mould group according to the target operating parameters and carries out Fingerprint collecting, obtains the second fingerprint image, and second fingerprint image is operated for fingerprint recognition.

Fourth aspect, the embodiment of the present application provide a kind of electronic equipment, including processor, memory, communication interface and One or more programs, wherein said one or multiple programs are stored in above-mentioned memory, and are configured by above-mentioned It manages device to execute, above procedure is included the steps that for executing the instruction in the embodiment of the present application second aspect.

5th aspect, the embodiment of the present application provide a kind of computer readable storage medium, wherein above-mentioned computer-readable Storage medium storage is used for the computer program of electronic data interchange, wherein above-mentioned computer program executes computer such as Step some or all of described in the embodiment of the present application second aspect.

6th aspect, the embodiment of the present application provide a kind of computer program product, wherein above-mentioned computer program product Non-transient computer readable storage medium including storing computer program, above-mentioned computer program are operable to make to calculate Machine executes the step some or all of as described in the embodiment of the present application second aspect.The computer program product can be one A software installation packet.

Implement the embodiment of the present application, have it is following the utility model has the advantages that

As can be seen that fingerprint identification method and Related product described in the embodiment of the present application, are applied to electronic equipment, The electronic equipment includes ultrasonic fingerprint identification mould group, identifies that mould group obtains the first fingerprint image by ultrasonic fingerprint, to the One fingerprint image carries out image quality evaluation, obtains evaluation result, when evaluation result is that fingerprint collecting fails, adjusts ultrasonic wave The running parameter of fingerprint recognition mould group obtains target operating parameters, identifies mould according to target operating parameters control ultrasonic fingerprint Group carries out fingerprint collecting, obtains the second fingerprint image, and the second fingerprint image is operated for fingerprint recognition, be so, it is possible in fingerprint When acquisition failure, the running parameter of adjustment ultrasonic fingerprint identification mould group is able to ascend fingerprint and adopts to carry out fingerprint collecting again Collect efficiency, improves the intelligence of ultrasonic fingerprint identification technology.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Figure 1A is the structural schematic diagram of a kind of electronic equipment provided by the embodiments of the present application；

Figure 1B is the structural schematic diagram of another electronic equipment provided by the embodiments of the present application；

Fig. 1 C is a kind of flow diagram of fingerprint identification method provided by the embodiments of the present application；

Fig. 1 D is the demonstration schematic diagram in fingerprint collecting region provided by the embodiments of the present application；

Fig. 2 is the flow diagram of another fingerprint identification method provided by the embodiments of the present application；

Fig. 3 is the structural schematic diagram of a kind of electronic equipment provided by the embodiments of the present application；

Fig. 4 A is a kind of functional unit composition block diagram of fingerprint identification device provided by the embodiments of the present application；

Fig. 4 B is a kind of functional unit composition block diagram of fingerprint identification device provided by the embodiments of the present application；

Fig. 4 C is a kind of functional unit composition block diagram of fingerprint identification device provided by the embodiments of the present application.

Specific embodiment

In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.

The description and claims of this application and term " first " in above-mentioned attached drawing, " second " etc. are for distinguishing Different objects, are not use to describe a particular order.In addition, term " includes " and " having " and their any deformations, it is intended that It is to cover and non-exclusive includes.Such as the process, method, system, product or equipment for containing a series of steps or units do not have It is defined in listed step or unit, but optionally further comprising the step of not listing or unit, or optionally also wrap Include other step or units intrinsic for these process, methods, product or equipment.

Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and Implicitly understand, embodiment described herein can be combined with other embodiments.

Electronic equipment involved by the embodiment of the present application may include the various handheld devices with wireless communication function, Mobile unit, wearable device (smartwatch, Intelligent bracelet, wireless headset, augmented reality/virtual reality device, Brilliant Eyes Mirror), calculate equipment or be connected to radio modem other processing equipments and various forms of user equipment (user Equipment, UE), mobile station (mobile station, MS), terminal device (terminal device) etc..For convenience Description, apparatus mentioned above are referred to as electronic equipment.

It describes in detail below to the embodiment of the present application.

Figure 1A is please referred to, Figure 1A is the structural schematic diagram of a kind of electronic equipment disclosed in the embodiment of the present application, electronic equipment 100 include storage and processing circuit 110, and the sensor 170 connecting with the storage and processing circuit 110, in which:

Electronic equipment 100 may include control circuit, which may include storage and processing circuit 110.This is deposited Storage and processing circuit 110 can store device, such as hard drive memory, nonvolatile memory (such as flash memory or it is used for shape At other electrically programmable read only memories etc. of solid state drive), volatile memory (such as either statically or dynamically arbitrary access Memory etc.) etc., the embodiment of the present application is with no restriction.Processing circuit in storage and processing circuit 110 can be used for controlling electricity The operating of sub- equipment 100.The processing circuit can microprocessor based on one or more, microcontroller, digital signal processor, Baseband processor, power management unit, audio codec chip, specific integrated circuit, display-driver Ics etc. come It realizes.

Storage and processing circuit 110 can be used for running the software in electronic equipment 100, such as the Internet browser application journey Sequence, voice over internet protocol (Voice over Internet Protocol, VOIP) call application program, Email Application program, media play-back application, operation system function etc..These softwares can be used for executing some control operations, example Such as, based on the Image Acquisition of camera, the ambient light measurement based on ambient light sensor, based on proximity sensor close to sensing Device measurement, the information display function that the positioning indicators such as status indicator lamp based on light emitting diode are realized, based on touch The touch event of sensor detects, and in the associated function of multiple (such as layering) display information displayed on screen, with execution The associated operation of wireless communication function, operation associated with collecting and generating audio signal, is pressed with collection and treatment button Other functions etc. in the associated control operation of event data and electronic equipment 100 are pressed, the embodiment of the present application does not limit System.

Electronic equipment 100 may include input-output circuit 150.Input-output circuit 150 can be used for making electronic equipment 100 realization data are output and input, i.e. permission electronic equipment 100 allows electronic equipment from outer equipment receiving data and also 100 export data to external equipment from electronic equipment 100.Input-output circuit 150 may further include sensor 170. Sensor 170 may include ultrasonic fingerprint identification mould group, can also include ambient light sensor, close based on light and capacitor Sensor, touch sensor is (for example, be based on light touch sensor and/or capacitive touch sensors, wherein touch sensor The a part that can be touching display screen can also be used as a touch sensor arrangement and independently use), acceleration transducer, With other sensors etc., ultrasonic fingerprint identification mould group be can integrate below screen, alternatively, ultrasonic fingerprint identification mould group can It to be set to the side or the back side of electronic equipment, is not limited thereto, ultrasonic fingerprint identification mould group can be used for acquiring Fingerprint image.

Input-output circuit 150 can also include one or more display screens, such as display screen 130.Display screen 130 can To include liquid crystal display, organic light-emitting diode (OLED) display screen, electric ink display screen, plasma panel, using other aobvious Show combination one or several kinds of in the display screen of technology.Display screen 130 may include touch sensor array (that is, display screen 130 can be touching display screen).Touch sensor can be by transparent touch sensor electrode (such as tin indium oxide (ITO) Electrode) capacitive touch sensors that array is formed, or it can be the touch sensor formed using other touching techniques, example Such as sound wave touch-control, pressure sensible touch, resistive touch, optical touch etc., the embodiment of the present application is with no restriction.

Electronic equipment 100 can also include audio component 140.Audio component 140 can be used for providing for electronic equipment 100 Audio input and output function.Audio component 140 in electronic equipment 100 may include loudspeaker, microphone, buzzer, sound Adjust generator and other for generating and detecting the component of sound.

Telecommunication circuit 120 can be used for providing the ability with external device communication for electronic equipment 100.Telecommunication circuit 120 It may include analog- and digital- input-output interface circuit, and the radio communication circuit based on radiofrequency signal and/or optical signal. Radio communication circuit in telecommunication circuit 120 may include radio-frequency transceiver circuitry, power amplifier circuit, low noise amplification Device, switch, filter and antenna.For example, the radio communication circuit in telecommunication circuit 120 may include for passing through transmitting The circuit of near-field communication (Near Field Communication, NFC) is supported with near-field coupling electromagnetic signal is received.Example Such as, telecommunication circuit 120 may include near-field communication aerial and near-field communication transceiver.Telecommunication circuit 120 can also include honeycomb Telephone transceiver and antenna, wireless lan transceiver circuit and antenna etc..

Electronic equipment 100 can further include battery, power management circuitry and other input-output units 160.It is defeated Enter-output unit 160 may include button, control stick, click wheel, scroll wheel, touch tablet, keypad, keyboard, camera, hair Optical diode and other positioning indicators etc..

User can input a command for the operation of controlling electronic devices 100 by input-output circuit 150, and can be with Status information and other outputs from electronic equipment 100 are received using the output data of input-output circuit 150 to realize.

In a possible example, by taking ultrasonic fingerprint identification mould group is located at below screen as an example, as shown in Figure 1B, figure 1B is a kind of structural schematic diagram of electronic equipment, and electronic equipment 100 may include glass cover-plate (Cover glass) 210, display Shield (OLED) 220, adhesive layer (Adhesive) 230, substrate (TFT Glass) 240, pixel layer (Pixel) 250, piezoelectric material Layer (Copolymer) 260, Ag Ink layer 270, solidification glue-line (DAF) 280.Certainly, can also include above above-mentioned glass cover-plate Film layer (film), film layer can be tempering film, be used to protect the display screen of electronic equipment.

Further, ultrasonic fingerprint identification mould group may include: Glass layer of TFT, Pixel layers, Ink layers of Ag and coagulate Solid glue layer.Glass layers of TFT for metal wiring, material coating；Pixel layers, for the Metal electricity on TFT Glass Piezoelectric energy-conversion material is also as ultrasonic wave transmitting/received cathode, Copolymer in pole, can " material deformation-voltage " phase Mutually conversion；Ink layers of Ag, it is used as ultrasonic wave transmitting/received anode；DAF is freezing plastic, for protecting ultrasonic fingerprint to identify Mould group；Adhesive layers are to identify mould group station in the viscose glue of OLED screen bottom ultrasonic fingerprint.

In the specific implementation, ultrasonic fingerprint identification mould group may include 2 states, TX state (for emitting ultrasonic wave) and RX state (for receiving ultrasonic wave).

Under TX state, pass through electrode (Pixel negative electrode and the Ag Ink positive electricity at Copolymer (piezoelectric material) both ends Pole) high-frequency (usually 10MHz rank) oscillator signal, such as sine wave are provided, Copolymer can generate the vibration of response frequency And ultrasonic wave is issued, the ultrasonic wave transmitted upwards reaches the fingerprint contacted with screen surface, due to fingerprint after through OLED screen When paddy ridge is bonded with screen, since the acoustic resistance characteristic and screen surfaces glass acoustic resistance different from those of the air in fingerprint valley are larger, refer to The acoustic resistance characteristic of the skin histology of wrinkle ridge and screen surfaces glass acoustic resistance property difference are relatively large, and therefore, fingerprint valley ridge is to ultrasound The reflected signal strength of wave is different.

Under RX state, ultrasonic fingerprint identification mould group is reached when reflected ultrasonic wave again passes through display screen After (Pixel-Copolymer-Ag Ink), Copolymer vibration is caused to generate electric signal, the fingerprint valley ridge of different location is corresponding The region pixel Copolymer oscillation intensity it is of different sizes, therefore the potential difference that receives of different location Pixel also not phase With (Ag Ink is equipotential), potential difference is converted into two-dimensional picture signal, thus obtains ultrasonic fingerprint image.

Based on electronic equipment described in above-mentioned Figure 1A and Figure 1B, following function can be used to implement:

In a possible example, image quality evaluation is carried out to first fingerprint image described, is evaluated As a result aspect, the processing circuit are specifically used for:

Feature point extraction is carried out to first fingerprint image, obtains multiple characteristic points；

Image segmentation is carried out to first fingerprint image, obtains finger-print region image；

Determine the corresponding target area of the finger-print region image；

The corresponding target feature point of first fingerprint image is determined according to the target area and the multiple characteristic point Distribution density；

According to the mapping relations between preset characteristic point distribution density and evaluation of estimate, the target feature point distribution is determined The corresponding objective appraisal value of density；

When the objective appraisal value is in preset range, confirm the evaluation result for fingerprint collecting success；

When the objective appraisal value is not at the preset range, confirm the evaluation result for fingerprint collecting failure.

In a possible example, in the running parameter of the adjustment ultrasonic fingerprint identification mould group, mesh is obtained In terms of marking running parameter, the processing circuit is specifically used for:

Determine that the target difference between the objective appraisal value and target value, the target value are in the preset range Any value；

According to the mapping relations between preset difference and regulation coefficient, the corresponding target adjustment of the target difference is determined Coefficient；

According to the running parameter of the identification mould group of ultrasonic fingerprint described in the target adjustment coefficient adjustment, the target is obtained Running parameter.

In a possible example, the evaluation result further include: target fingerprint acquires failure cause type；

The processing circuit also particularly useful for:

According between preset fingerprint collecting failure cause type and the running parameter of ultrasonic fingerprint identification mould group Mapping relations, determine the corresponding running parameter to be adjusted of target fingerprint acquisition failure cause type；

It is described in terms of obtaining target operating parameters in the running parameter of the adjustment ultrasonic fingerprint identification mould group Processing circuit is used for:

The running parameter to be adjusted is adjusted, the target operating parameters are obtained.

In a possible example, the ultrasonic fingerprint identifies mould group, is also used to carry out proximity test；And it is examining When measuring close to the distance between object and ultrasonic fingerprint identification mould group less than pre-determined distance, obtain described close to object Target image；

The processing circuit is also used to carry out contours extract to the target image, obtains objective contour image；

By ultrasonic fingerprint identification mould group when the objective contour image meets preset requirement, confirm described close Object is finger, executes described the step of identifying mould group the first fingerprint image of acquisition by the ultrasonic fingerprint.

As can be seen that electronic equipment described in the embodiment of the present application, which includes ultrasonic fingerprint identification Mould group identifies that mould group obtains the first fingerprint image by ultrasonic fingerprint, carries out image quality evaluation to the first fingerprint image, obtain To evaluation result, when evaluation result is that fingerprint collecting fails, the running parameter of adjustment ultrasonic fingerprint identification mould group obtains mesh Running parameter is marked, fingerprint collecting is carried out according to target operating parameters control ultrasonic fingerprint identification mould group, obtains the second fingerprint image Picture, the second fingerprint image are operated for fingerprint recognition, so, it is possible when fingerprint collecting fails, adjustment ultrasonic fingerprint identification The running parameter of mould group is able to ascend fingerprint collecting efficiency to carry out fingerprint collecting again, improves ultrasonic fingerprint identification skill The intelligence of art.

Fig. 1 C is please referred to, Fig. 1 C is a kind of flow diagram of fingerprint identification method provided by the embodiments of the present application, is such as schemed Shown, applied to electronic equipment as shown in Figure 1A, the electronic equipment includes ultrasonic fingerprint identification mould group, this fingerprint recognition Method includes:

101, identify that mould group obtains the first fingerprint image by the ultrasonic fingerprint.

Wherein, in the embodiment of the present application, ultrasonic fingerprint identification mould group be can integrate below display screen, such as Fig. 1 D institute Show, ultrasonic fingerprint identification mould group corresponds to fingerprint collecting region, and fingerprint collecting region corresponds to the touching of all or part of display screen Region is controlled, fingerprint collecting region, which can be realized, carries out fingerprint collecting to one or more finger.Finger touch to or connect The touch area of the corresponding display screen in nearly fingerprint collecting region, then electronic equipment can identify that mould group carries out by ultrasonic fingerprint Fingerprint collecting obtains target fingerprint image.

In a possible example, above-mentioned steps 101 identify that mould group obtains the first fingerprint by the ultrasonic fingerprint Image may include steps of:

11, when detecting the touch control operation for the fingerprint collecting region, the target for being directed to the display screen is obtained Touch parameter；

12, it is closed according to the mapping between preset touch parameter and the running parameter of ultrasonic fingerprint identification mould group System, determines the corresponding target operating parameters of the target touch parameter；

13, it controls the ultrasonic fingerprint identification mould group and carries out fingerprint collecting according to the target operating parameters, obtain institute State the first fingerprint image.

Wherein, above-mentioned touch parameter can be following at least one: touch-control dynamics, the touch display screen of touch display screen It touch-control time, the touch-control area of touch display screen, the touch point number of touch display screen etc., is not limited thereto.Ultrasonic wave The running parameter of fingerprint recognition mould group can be following at least one: ultrasonic fingerprint identifies the transmission power of mould group, ultrasonic wave The work of the working frequency of fingerprint recognition mould group, the operating current of ultrasonic fingerprint identification mould group, ultrasonic fingerprint identification mould group The operating power etc. of voltage and ultrasonic fingerprint identification mould group, is not limited thereto.

In the specific implementation, preset touch parameter and ultrasonic fingerprint identification mould group can be stored in advance in electronic equipment Mapping relations between running parameter, electronic equipment can be obtained when detecting the touch control operation for fingerprint collecting region The corresponding target operating parameters of target touch parameter are determined according to the mapping relations for the target touch parameter of display screen, according to Fingerprint collecting is carried out according to the target operating parameters, obtains the first fingerprint image.Due to the work ginseng of ultrasonic fingerprint identification mould group Number is closely bound up with touch parameter, and therefore, available running parameter corresponding with touch control operation carries out fingerprint collecting, obtains figure The better fingerprint image of image quality amount, for example, touch-control dynamics is too light, possible details in fingerprint is unintelligible, then can be super by being promoted The transmission power of sound wave fingerprint recognition mould group, can promote fingerprint image quality to a certain extent.

In a possible example, before above-mentioned steps 101, it can also include the following steps:

A1, identify that mould group carries out proximity test by the ultrasonic fingerprint；

A2, detect be less than pre-determined distance close at a distance between object and the ultrasonic fingerprint identification mould group when, Obtain the target image close to object；

A3, contours extract is carried out to the target image, obtains objective contour image；

A4, when the objective contour image meets preset requirement, confirm that described close to object is finger, execute described logical Cross the step of ultrasonic fingerprint identification mould group obtains the first fingerprint image.

Wherein, pre-determined distance can be by user's self-setting or system default.It is above-mentioned close to object can be finger Or other objects.Above-mentioned preset requirement can also be by user's self-setting or system default, for example, objective contour image Shape is finger contours shape, then confirms that objective contour image meets preset requirement, in another example, the average width of objective contour image Degree is in preset range, then confirms that objective contour image meets preset requirement etc., in the specific implementation, electronic equipment can pass through Ultrasonic fingerprint identifies that mould group carries out proximity test, identifies at a distance between mould group detecting close to object and ultrasonic fingerprint When less than pre-determined distance, then the available target image close to object can carry out contours extract to target image in turn, Specifically, Hough transformation can be carried out to target image, obtains objective contour image, meets preset requirement in objective contour image When, confirmation is that finger can carry out fingerprint collecting in turn close to object.

102, image quality evaluation is carried out to first fingerprint image, obtains evaluation result.

Wherein, evaluation result reflects the quality of fingerprint image to a certain extent, and certainly, evaluation result can also reflect Other characteristics of fingerprint image, for example, whether fingerprint image from dry finger, wet finger, in another example, the acquisition of fingerprint image Condition or acquisition environment, in another example, whether fingerprint image can also reflect fingerprint from adult or child.Specific implementation In, electronic equipment can carry out image quality evaluation to the first fingerprint image using at least one image quality evaluation index, obtain To evaluation result, image quality evaluation index can be following at least one: average gray, edge conservation degree, clarity, information Entropy etc. is not limited thereto, can when carrying out image quality evaluation to fingerprint image using multiple images quality evaluation index The corresponding weighted value of each image quality evaluation index is arranged, in turn, by a series of ranking operation, final comment is obtained Valence result.

In a possible example, above-mentioned steps 102 carry out image quality evaluation to first fingerprint image, obtain To evaluation result, may include steps of:

21, feature point extraction is carried out to first fingerprint image, obtains multiple characteristic points；

22, image segmentation is carried out to first fingerprint image, obtains finger-print region image；

23, the corresponding target area of the finger-print region image is determined；

24, the corresponding target signature of first fingerprint image is determined according to the target area and the multiple characteristic point Point distribution density；

25, according to the mapping relations between preset characteristic point distribution density and evaluation of estimate, the target feature point is determined The corresponding objective appraisal value of distribution density；

26, when the objective appraisal value is in preset range, confirm the evaluation result for fingerprint collecting success；

27, when the objective appraisal value is not at the preset range, confirm the evaluation result for fingerprint collecting mistake It loses.

Wherein, above-mentioned preset range can be by user's self-setting or system default.In the specific implementation, characteristic point is more Few, the distribution density of characteristic point reflects the quality of picture quality to a certain extent.The algorithm of feature point extraction can for Lower at least one: Scale invariant features transform (scale invariant feature transform, SIFT), the angle harris Point detection algorithm, SURF algorithm etc., are not limited thereto.The corresponding algorithm of image segmentation can be following at least one: threshold It is worth partitioning algorithm, Region Segmentation Algorithm and edge partitioning algorithm, is not limited thereto.

In the specific implementation, electronic equipment can carry out feature point extraction to the first fingerprint image, multiple characteristic points are obtained, it is right First fingerprint image carries out image segmentation, obtains finger-print region image, can determine the area of finger-print region image, obtain mesh Area is marked, according to target area, multiple characteristic points, can determine the corresponding target feature point distribution density of the first fingerprint image, That is target feature point distribution density=multiple characteristic points sum/target area can be stored in advance in electronic equipment preset Mapping relations between characteristic point distribution density and evaluation of estimate determine that target feature point distribution is close according to the mapping relations in turn Corresponding objective appraisal value is spent, when objective appraisal value is in preset range, then confirms that evaluation result is successful for fingerprint collecting, instead It then confirms evaluation result for fingerprint collecting failure when objective appraisal value is not at preset range.

103, when the evaluation result is that fingerprint collecting fails, the work ginseng of the ultrasonic fingerprint identification mould group is adjusted Number, obtains target operating parameters.

Wherein, the running parameter of ultrasonic fingerprint identification mould group can be following at least one: ultrasonic fingerprint identifies mould Operating current, the ultrasonic wave of the transmission power of group, the working frequency of ultrasonic fingerprint identification mould group, ultrasonic fingerprint identification mould group The operating power etc. of operating voltage and ultrasonic fingerprint the identification mould group of fingerprint recognition mould group, is not limited thereto.

In a possible example, in the running parameter of the adjustment ultrasonic fingerprint identification mould group, mesh is obtained In terms of marking running parameter, above-mentioned steps 103 be may include steps of:

31, determine that the target difference between the objective appraisal value and target value, the target value are the preset range Interior any value；

32, according to the mapping relations between preset difference and regulation coefficient, the corresponding target of the target difference is determined Regulation coefficient；

33, the running parameter according to the identification mould group of ultrasonic fingerprint described in the target adjustment coefficient adjustment obtains described Target operating parameters.

Wherein, electronic equipment can choose a target value, and target value is any value in preset range, determine that target is commented Be worth the target difference between target value, can also be stored in advance between preset difference and regulation coefficient in electronic equipment Mapping relations can determine that the corresponding target adjustment coefficient of target difference, regulation coefficient are real according to the mapping relations in turn Number, the value range of regulation coefficient are following at least one: [- 1,1], [0,1], [0,1], [- 1,1], [1,10] etc., herein It is not construed as limiting.It is possible to further the work according to target adjustment coefficient adjustment ultrasonic fingerprint identification mould group, target work is obtained Make parameter, specifically, target operating parameters=running parameter * target adjustment coefficient, alternatively, target operating parameters=running parameter + target adjustment coefficient, is not limited thereto.

In a possible example, the evaluation result further include: target fingerprint acquires failure cause type；It can be with Include the following steps:

Then, above-mentioned steps 103 adjust the running parameter of the ultrasonic fingerprint identification mould group, obtain target operating parameters, It can implement as follows:

Wherein, in the embodiment of the present application, it can be following at least one: characteristic point that target fingerprint, which acquires failure cause type, Less, non-fingerprint image, the fingerprint image of low temperature acquisition, the fingerprint image of dry finger, fingerprint image of wet finger etc., herein It is not construed as limiting.During fingerprint collecting, different fingerprint collecting failure cause types does not need to adjust all work ginsengs Number, but it is directed to different reasons, adjust corresponding running parameter.Therefore, preset finger can be stored in advance in electronic equipment Line acquires the mapping relations between failure cause type and the running parameter of ultrasonic fingerprint identification mould group, which can be with Obtained by lot of experimental data, in turn, according to the mapping relations determine target fingerprint acquisition failure cause type it is corresponding to Adjustment running parameter adjusts the running parameter to be adjusted in turn, and specific adjustment means may refer to above-mentioned steps 31- step 33, Available target operating parameters, target operating parameters may include work to be adjusted adjusted, and not need to adjust originally Whole running parameter.

104, ultrasonic fingerprint identification mould group is controlled according to the target operating parameters and carry out fingerprint collecting, obtain the Two fingerprint images, second fingerprint image are operated for fingerprint recognition.

Wherein, it since the running parameter of ultrasonic fingerprint identification mould group is adjusted, so, it is possible to promote ultrasonic fingerprint Identify the fingerprint collecting efficiency of mould group, electronic equipment can control ultrasonic fingerprint identification mould group according to target operating parameters and carry out Fingerprint collecting obtains the second fingerprint image, which can be used for fingerprint recognition operation, for example, this second is referred to Print image is matched with preset fingerprint template, or, using second fingerprint image as preset fingerprint template etc..

In a possible example, after above-mentioned steps 104, it can also include the following steps:

B1, second fingerprint image is matched with preset fingerprint template；

B2, second fingerprint image and the preset fingerprint template matching success when, execute unlock operation.

Wherein, unlock operation can be following at least one: enter homepage by screen locking or blank screen, alternatively, by screen locking Or the default application of blank screen starting, alternatively, executing predetermined registration operation, predetermined registration operation can be following at least one: delete operation is repaired Change operation, squeeze operation, choose operation, photographing operation, delivery operation etc., is not limited thereto.In the specific implementation, second When fingerprint image is with the success of preset fingerprint template matching, then unlock operation can be executed, conversely, in the second fingerprint image and presetting Fingerprint template then prompts user fingerprints recognition failures when it fails to match, alternatively, prompt user re-starts fingerprint input.

In a possible example, above-mentioned steps B1 be may include steps of:

B11, image segmentation is carried out to second fingerprint image, obtains target fingerprint area image；

The characteristic point distribution of B12, the analysis target fingerprint area image；

B13, circular image interception is carried out to the target fingerprint area image according to a not concentric of M, obtains M circle Finger-print region image, the M are the integer greater than 3；

B14, target circle finger-print region image is selected from described M round finger-print region image, the target is round The quantity for the characteristic point that finger-print region image is included is greater than other round fingerprint regions in described M round finger-print region image Area image；

B15, the target circle finger-print region image is divided to obtain N number of annulus, the ring width of N number of annulus is identical；

B16, since N number of annulus the smallest annulus of radius, by N number of annulus successively with preset fingerprint template Carry out Feature Points Matching, and the accumulative matching value for having matched annulus；

B17, stop carrying out Feature Points Matching immediately when accumulative matching value is greater than preset matching threshold value, and export fingerprint Identify successful prompting message.

Wherein, electronic equipment can carry out image segmentation to the second fingerprint image, obtain target fingerprint area image, into And the characteristic point distribution of the target fingerprint area image is analyzed, the target fingerprint area image is carried out according to a not concentric of M Circular image interception obtains M round finger-print region image, and M is the integer greater than 3, selects from M round finger-print region image Target circle finger-print region image out, the quantity for the characteristic point that target circle finger-print region image is included are greater than M circle and refer to Other round finger-print region images in line area image, divide target circle finger-print region image to obtain N number of annulus, N number of The ring width of annulus is identical, and since N number of annulus the smallest annulus of radius, N number of annulus is successively carried out with preset fingerprint template Feature Points Matching, and the accumulative matching value for having matched annulus, in this way, in fingerprint identification process, can by different location or The characteristic point of different fingerprints is equivalent to and samples to entire fingerprint image, and the sampling can cover entire finger for matching Line region, thus, corresponding characteristic features can be found from each region to be used to match, when accumulative matching value is big Stop carrying out Feature Points Matching immediately when preset matching threshold value, and export the successful prompting message of fingerprint recognition, so, it is possible Quickly and precisely identify fingerprint recognition.

As can be seen that fingerprint identification method described in the embodiment of the present application, is applied to electronic equipment, the electronic equipment Mould group is identified including ultrasonic fingerprint, identifies that mould group obtains the first fingerprint image by ultrasonic fingerprint, to the first fingerprint image Image quality evaluation is carried out, evaluation result is obtained, when evaluation result is that fingerprint collecting fails, adjustment ultrasonic fingerprint identifies mould The running parameter of group obtains target operating parameters, carries out fingerprint according to target operating parameters control ultrasonic fingerprint identification mould group Acquisition obtains the second fingerprint image, and the second fingerprint image is operated for fingerprint recognition, so, it is possible when fingerprint collecting fails, The running parameter of ultrasonic fingerprint identification mould group is adjusted to carry out fingerprint collecting again, fingerprint collecting efficiency is able to ascend, is promoted The intelligence of ultrasonic fingerprint identification technology.

Consistently with embodiment shown in above-mentioned Fig. 1 C, referring to Fig. 2, Fig. 2 is a kind of finger provided by the embodiments of the present application The flow diagram of line recognition methods, as shown, being applied to electronic equipment as shown in Figure 1A, the electronic equipment includes super Sound wave fingerprint recognition mould group；This fingerprint identification method includes:

201, identify that mould group carries out proximity test by the ultrasonic fingerprint.

202, detect be less than pre-determined distance close at a distance between object and the ultrasonic fingerprint identification mould group when, Obtain the target image close to object.

203, contours extract is carried out to the target image, obtains objective contour image.

204, when the objective contour image meets preset requirement, confirm it is described close to object be finger, by described Ultrasonic fingerprint identifies that mould group obtains the first fingerprint image.

205, image quality evaluation is carried out to first fingerprint image, obtains evaluation result.

206, when the evaluation result is that fingerprint collecting fails, the work ginseng of the ultrasonic fingerprint identification mould group is adjusted Number, obtains target operating parameters.

207, ultrasonic fingerprint identification mould group is controlled according to the target operating parameters and carry out fingerprint collecting, obtain the Two fingerprint images, second fingerprint image are operated for fingerprint recognition.

Wherein, the specific descriptions of above-mentioned steps 201- step 207 are referred to fingerprint recognition side described in above-mentioned Fig. 1 C The corresponding steps of method, details are not described herein.

As can be seen that fingerprint identification method described in the embodiment of the present application, is applied to electronic equipment, the electronic equipment Mould group is identified including ultrasonic fingerprint, can not only identify that mould group carries out proximity test by ultrasonic fingerprint, it is in one's hands detecting When finger, carry out fingerprint image acquisition, can fingerprint collecting fail when, adjustment ultrasonic fingerprint identification mould group running parameter with Fingerprint collecting is carried out again, is able to ascend fingerprint collecting efficiency, improves the intelligence of ultrasonic fingerprint identification technology.

Consistently with above-described embodiment, referring to Fig. 3, Fig. 3 is the knot of a kind of electronic equipment provided by the embodiments of the present application Structure schematic diagram, as shown, the electronic equipment includes processor, memory, communication interface and one or more program, it is described Electronic equipment includes ultrasonic fingerprint identification mould group, and said one or multiple programs are stored in above-mentioned memory, and by Configuration is executed by above-mentioned processor, and in the embodiment of the present application, above procedure includes the instruction for executing following steps:

In a possible example, image quality evaluation is carried out to first fingerprint image described, is evaluated As a result aspect, above procedure includes the instruction for executing following steps:

Determine the corresponding target area of the finger-print region image；

In a possible example, in the running parameter of the adjustment ultrasonic fingerprint identification mould group, mesh is obtained In terms of marking running parameter, above procedure includes the instruction for executing following steps:

Above procedure further includes the instruction for executing following steps:

The running parameter of the adjustment ultrasonic fingerprint identification mould group, obtains target operating parameters, comprising:

In a possible example, above procedure further includes the instruction for executing following steps:

Identify that mould group carries out proximity test by the ultrasonic fingerprint；

Detect be less than pre-determined distance close at a distance between object and the ultrasonic fingerprint identification mould group when, obtain The target image close to object；

Contours extract is carried out to the target image, obtains objective contour image；

When the objective contour image meets preset requirement, confirms that described close to object is finger, pass through described in execution The step of ultrasonic fingerprint identification mould group obtains the first fingerprint image.

It is above-mentioned that mainly the scheme of the embodiment of the present application is described from the angle of method side implementation procedure.It is understood that , in order to realize the above functions, it comprises execute the corresponding hardware configuration of each function and/or software mould for electronic equipment Block.Those skilled in the art should be readily appreciated that, in conjunction with each exemplary unit of embodiment description presented herein And algorithm steps, the application can be realized with the combining form of hardware or hardware and computer software.Some function actually with Hardware or computer software drive the mode of hardware to execute, the specific application and design constraint item depending on technical solution Part.Professional technician can specifically realize described function to each using distinct methods, but this reality Now it is not considered that exceeding scope of the present application.

The embodiment of the present application can carry out the division of functional unit according to above method example to electronic equipment, for example, can With each functional unit of each function division of correspondence, two or more functions can also be integrated in a processing unit In.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.It needs It is noted that be schematical, only a kind of logical function partition to the division of unit in the embodiment of the present application, it is practical real It is current that there may be another division manner.

Fig. 4 A is the functional unit composition block diagram of fingerprint identification device 400 involved in the embodiment of the present application.The fingerprint Identification device 400, is applied to electronic equipment, and the electronic equipment includes ultrasonic fingerprint identification mould group；Described device 400 is wrapped It includes: acquiring unit 401, evaluation unit 402 and adjustment unit 403, wherein

The acquiring unit 401, for identifying that mould group obtains the first fingerprint image by the ultrasonic fingerprint；

The evaluation unit 402 obtains evaluation result for carrying out image quality evaluation to first fingerprint image；

The adjustment unit 403, for adjusting the ultrasonic fingerprint when the evaluation result is that fingerprint collecting fails The running parameter for identifying mould group, obtains target operating parameters；

The acquiring unit 401 is also used to control the ultrasonic fingerprint identification mould group according to the target operating parameters Fingerprint collecting is carried out, the second fingerprint image is obtained, second fingerprint image is operated for fingerprint recognition.

As can be seen that fingerprint identification device described in the embodiment of the present application, is applied to electronic equipment, the electronic equipment Mould group is identified including ultrasonic fingerprint, identifies that mould group obtains the first fingerprint image by ultrasonic fingerprint, to the first fingerprint image Image quality evaluation is carried out, evaluation result is obtained, when evaluation result is that fingerprint collecting fails, adjustment ultrasonic fingerprint identifies mould The running parameter of group obtains target operating parameters, carries out fingerprint according to target operating parameters control ultrasonic fingerprint identification mould group Acquisition obtains the second fingerprint image, and the second fingerprint image is operated for fingerprint recognition, so, it is possible when fingerprint collecting fails, The running parameter of ultrasonic fingerprint identification mould group is adjusted to carry out fingerprint collecting again, fingerprint collecting efficiency is able to ascend, is promoted The intelligence of ultrasonic fingerprint identification technology.

In a possible example, image quality evaluation is carried out to first fingerprint image described, is evaluated As a result aspect, the evaluation unit 402 are specifically used for:

Determine the corresponding target area of the finger-print region image；

In a possible example, in the running parameter of the adjustment ultrasonic fingerprint identification mould group, mesh is obtained In terms of marking running parameter, the adjustment unit 403 is specifically used for:

In a possible example, the evaluation result further include: target fingerprint acquires failure cause type；Such as figure 4B, Fig. 4 B are that the another modification structures of fingerprint identification device described in Fig. 4 A can also include: true compared with Fig. 4 A Order member 404, specific as follows:

Determination unit 404, for identifying mould according to preset fingerprint collecting failure cause type and the ultrasonic fingerprint Mapping relations between the running parameter of group determine the corresponding work ginseng to be adjusted of the target fingerprint acquisition failure cause type Number；

It is described in terms of obtaining target operating parameters in the running parameter of the adjustment ultrasonic fingerprint identification mould group Adjustment unit 403 is specifically used for:

In a possible example, the evaluation result further include: target fingerprint acquires failure cause type；Such as figure 4C, Fig. 4 C are the another modification structures of fingerprint identification device described in Fig. 4 A, can also include: inspection compared with Fig. 4 A Unit 405 and extraction unit 406 are surveyed, specific as follows:

Detection unit 405, for identifying that mould group carries out proximity test by the ultrasonic fingerprint；

The acquiring unit 401, for detect close to object and the ultrasonic fingerprint identification mould group between away from When from being less than pre-determined distance, the target image close to object is obtained；

Extraction unit 406 obtains objective contour image for carrying out contours extract to the target image；

By the acquiring unit 401 when the objective contour image meets preset requirement, confirmation is described to be close to object Finger executes described the step of identifying mould group the first fingerprint image of acquisition by the ultrasonic fingerprint.

It is understood that the function of each program module of the fingerprint identification device of the present embodiment can be according to above method reality The method specific implementation in example is applied, specific implementation process is referred to the associated description of above method embodiment, herein no longer It repeats.

The embodiment of the present application also provides a kind of computer storage medium, wherein computer storage medium storage is for electricity The computer program of subdata exchange, the computer program make computer execute any as recorded in above method embodiment Some or all of method step, above-mentioned computer include electronic equipment.

The embodiment of the present application also provides a kind of computer program product, and above-mentioned computer program product includes storing calculating The non-transient computer readable storage medium of machine program, above-mentioned computer program are operable to that computer is made to execute such as above-mentioned side Some or all of either record method step in method embodiment.The computer program product can be a software installation Packet, above-mentioned computer includes electronic equipment.

It should be noted that for the various method embodiments described above, for simple description, therefore, it is stated as a series of Combination of actions, but those skilled in the art should understand that, the application is not limited by the described action sequence because According to the application, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know It knows, the embodiments described in the specification are all preferred embodiments, related actions and modules not necessarily the application It is necessary.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, reference can be made to the related descriptions of other embodiments.

In several embodiments provided herein, it should be understood that disclosed device, it can be by another way It realizes.For example, the apparatus embodiments described above are merely exemplary, such as the division of said units, it is only a kind of Logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine or can To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual Coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit, It can be electrical or other forms.

Above-mentioned unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.

If above-mentioned integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer-readable access to memory.Based on this understanding, the technical solution of the application substantially or Person says that all or part of the part that contributes to existing technology or the technical solution can body in the form of software products Reveal and, which is stored in a memory, including some instructions are used so that a computer equipment (can be personal computer, server or network equipment etc.) executes all or part of each embodiment above method of the application Step.And memory above-mentioned includes: USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory The various media that can store program code such as (RAM, Random Access Memory), mobile hard disk, magnetic or disk.

Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can It is completed with instructing relevant hardware by program, which can store in a computer-readable memory, memory May include: flash disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random access device (English: Random Access Memory, referred to as: RAM), disk or CD etc..

The embodiment of the present application is described in detail above, specific case used herein to the principle of the application and Embodiment is expounded, the description of the example is only used to help understand the method for the present application and its core ideas； At the same time, for those skilled in the art can in specific embodiments and applications according to the thought of the application There is change place, in conclusion the contents of this specification should not be construed as limiting the present application.

Claims

1. a kind of electronic equipment, which is characterized in that the electronic equipment includes processing circuit, and is connect with the processing circuit Ultrasonic fingerprint identify mould group, wherein

The processing circuit obtains evaluation result for carrying out image quality evaluation to first fingerprint image；In institute's commentary When valence result is that fingerprint collecting fails, the running parameter of the ultrasonic fingerprint identification mould group is adjusted, target operating parameters are obtained；

The ultrasonic fingerprint identifies mould group, is also used to control the ultrasonic fingerprint identification mould according to the target operating parameters Group carries out fingerprint collecting, obtains the second fingerprint image, and second fingerprint image is operated for fingerprint recognition.

2. electronic equipment according to claim 1, which is characterized in that carry out image to first fingerprint image described Quality evaluation, in terms of obtaining evaluation result, the processing circuit is specifically used for:

Determine the corresponding target area of the finger-print region image；

The corresponding target feature point distribution of first fingerprint image is determined according to the target area and the multiple characteristic point Density；

According to the mapping relations between preset characteristic point distribution density and evaluation of estimate, the target feature point distribution density is determined Corresponding objective appraisal value；

3. according to the method described in claim 2, it is characterized in that, identifying the work of mould group in the adjustment ultrasonic fingerprint Make parameter, in terms of obtaining target operating parameters, the processing circuit is specifically used for:

Determine that the target difference between the objective appraisal value and target value, the target value are any in the preset range Value；

According to the mapping relations between preset difference and regulation coefficient, the corresponding target adjustment system of the target difference is determined Number；

According to the running parameter of the identification mould group of ultrasonic fingerprint described in the target adjustment coefficient adjustment, the target operation is obtained Parameter.

4. according to the electronic equipment described in claim 2 or 3, which is characterized in that the evaluation result further include: target refers to Line acquires failure cause type；

The processing circuit also particularly useful for:

According to reflecting between preset fingerprint collecting failure cause type and the running parameter of ultrasonic fingerprint identification mould group Relationship is penetrated, determines the corresponding running parameter to be adjusted of the target fingerprint acquisition failure cause type；

In the running parameter of the adjustment ultrasonic fingerprint identification mould group, in terms of obtaining target operating parameters, the processing Circuit is used for:

5. electronic equipment according to claim 1-4, which is characterized in that wherein,

The ultrasonic fingerprint identifies mould group, is also used to carry out proximity test；And it is detecting close to object and the ultrasound When the distance between wave fingerprint recognition mould group is less than pre-determined distance, the target image close to object is obtained；

By ultrasonic fingerprint identification mould group when the objective contour image meets preset requirement, confirm described close to object For finger, described the step of mould group the first fingerprint image of acquisition is identified by the ultrasonic fingerprint is executed.

6. a kind of fingerprint identification method, which is characterized in that be applied to electronic equipment, the electronic equipment includes that ultrasonic fingerprint is known Other mould group；The described method includes:

When the evaluation result is that fingerprint collecting fails, the running parameter of the ultrasonic fingerprint identification mould group is adjusted, is obtained Target operating parameters；

The ultrasonic fingerprint identification mould group is controlled according to the target operating parameters and carries out fingerprint collecting, obtains the second fingerprint image Picture, second fingerprint image are operated for fingerprint recognition.

7. according to the method described in claim 6, it is characterized in that, described comment first fingerprint image progress picture quality Valence obtains evaluation result, comprising:

Determine the corresponding target area of the finger-print region image；

8. the method according to the description of claim 7 is characterized in that the work of the adjustment ultrasonic fingerprint identification mould group Parameter obtains target operating parameters, comprising:

9. according to method described in the claim 7 or 8, which is characterized in that the evaluation result further include: target fingerprint is adopted Collect failure cause type；

The method also includes:

10. the method according to claim 6, which is characterized in that the method also includes:

Detect be less than pre-determined distance close at a distance between object and the ultrasonic fingerprint identification mould group when, described in acquisition Close to the target image of object；

When the objective contour image meets preset requirement, confirms that described close to object is finger, execute described by described Ultrasonic fingerprint identifies the step of mould group obtains the first fingerprint image.

11. a kind of fingerprint identification device, which is characterized in that be applied to electronic equipment, the electronic equipment includes ultrasonic fingerprint Identify mould group；Described device includes: acquiring unit, evaluation unit and adjustment unit, wherein

The adjustment unit, for adjusting the ultrasonic fingerprint identification mould when the evaluation result is that fingerprint collecting fails The running parameter of group, obtains target operating parameters；

The acquiring unit is also used to control the ultrasonic fingerprint identification mould group according to the target operating parameters and carries out fingerprint Acquisition, obtains the second fingerprint image, and second fingerprint image is operated for fingerprint recognition.

12. a kind of electronic equipment, which is characterized in that including processor, memory, the memory is for storing one or more Program, and be configured to be executed by the processor, described program includes for executing as described in claim any one of 6-10 Method in step instruction.

13. a kind of computer readable storage medium, which is characterized in that storage is used for the computer program of electronic data interchange, In, the computer program makes computer execute such as the described in any item methods of claim 6-10.