CN110443019B - Fingerprint identification method and related product - Google Patents

Fingerprint identification method and related product Download PDF

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Publication number
CN110443019B
CN110443019B CN201910731425.2A CN201910731425A CN110443019B CN 110443019 B CN110443019 B CN 110443019B CN 201910731425 A CN201910731425 A CN 201910731425A CN 110443019 B CN110443019 B CN 110443019B
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target
area
unlocking success
fingerprint
historical
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CN110443019A (en
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吴安平
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/25—Determination of region of interest [ROI] or a volume of interest [VOI]
    • 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
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing

Abstract

The embodiment of the application discloses fingerprint identification method and related products, is applied to electronic equipment, and this electronic equipment includes temperature sensor, display screen and ultrasonic wave module, and the display screen includes a plurality of regions, and the ultrasonic wave module is including setting up a plurality of ultrasonic wave sensor in the display screen below, and each region corresponds at least one ultrasonic wave sensor, and this method includes: the target temperature parameters detected by the temperature sensors are acquired, the target areas in the multiple areas are determined according to the target temperature parameters, the target areas are areas corresponding to the temperature parameters and having the highest unlocking success rate, the target areas are highlighted through the display screen to indicate fingers of target objects to touch the target areas, the target ultrasonic sensors corresponding to the target areas are started, and fingerprint collection is performed on the target areas through the target ultrasonic sensors, so that the influence of temperature factors on fingerprint identification can be reduced, and the accuracy of the fingerprint identification is improved.

Description

Fingerprint identification method and related product
Technical Field
The application relates to the technical field of fingerprint identification, in particular to a fingerprint identification method and a related product.
Background
With the widespread use of electronic devices (such as mobile phones, tablet computers, and the like), the electronic devices have more and more applications and more powerful functions, and the electronic devices are developed towards diversification and personalization, and become indispensable electronic products in the life of users.
The fingerprint identification technology also becomes the unlocking technology that electronic equipment is comparatively commonly used, along with the development of fingerprint identification technology, at present, ultrasonic fingerprint identification technology receives the favor of supplier more and more, but, the result of ultrasonic fingerprint identification can receive the influence of temperature factor, therefore, how to improve the problem of the accuracy of ultrasonic fingerprint identification result and await solution urgently.
Disclosure of Invention
The embodiment of the application provides a fingerprint identification method and a related product, which can reduce the influence of temperature factors on fingerprint identification and improve the accuracy of fingerprint identification.
In a first aspect, an embodiment of the present application provides an electronic device, which includes a processing circuit, and a temperature sensor, a display screen, and an ultrasonic module connected to the processing circuit, where the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, each of the regions corresponds to at least one of the ultrasonic sensors, and where,
the processing circuit is used for acquiring a target temperature parameter detected by the temperature sensor; determining a target area in the plurality of areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
the display screen is used for highlighting the target area to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area and carrying out fingerprint collection on the target area through the target ultrasonic sensor.
In a second aspect, an embodiment of the present application provides a fingerprint identification method, which is applied to an electronic device, where the electronic device includes a temperature sensor, an ultrasonic module, and a display screen, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, and each region corresponds to at least one ultrasonic sensor; the method comprises the following steps:
acquiring a target temperature parameter detected by the temperature sensor;
determining a target area in the plurality of areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
highlighting the target area through the display screen to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area, and performing fingerprint acquisition on the target area through the target ultrasonic sensor.
In a third aspect, an embodiment of the present application provides a fingerprint identification device, which is applied to an electronic device, where the electronic device includes a temperature sensor, an ultrasonic module, and a display screen, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, and each region corresponds to at least one ultrasonic sensor; the device comprises:
the acquisition unit is used for acquiring a target temperature parameter detected by the temperature sensor;
the determining unit is used for determining a target area in the multiple areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
the display unit is used for highlighting the target area through the display screen so as to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area and carrying out fingerprint collection on the target area through the target ultrasonic sensor.
In a fourth aspect, embodiments of the present application provide an electronic device, including a temperature sensor, a display screen, an ultrasound module, a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for performing the steps in the second aspect of the embodiments of the present application.
In a fifth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the second aspect of the present application.
In a sixth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in the second aspect of embodiments of the present application. The computer program product may be a software installation package.
The embodiment of the application has the following beneficial effects:
it can be seen that the fingerprint identification method and the related product described in the embodiments of the present application are applied to an electronic device, the electronic device includes a temperature sensor, a display screen and an ultrasonic module, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, each region corresponds to at least one of the ultrasonic sensors, a target region in the plurality of regions is determined according to a target temperature parameter detected by the temperature sensor by obtaining the target temperature parameter, the target region is a region with the highest unlocking success rate corresponding to the temperature parameter, the target region is highlighted by the display screen to indicate a finger of a target object to touch the target region, the target ultrasonic sensor corresponding to the target region is turned on, and the target ultrasonic sensor performs fingerprint collection on the target region, therefore, the target area can be determined through the target temperature parameter, the user is indicated to touch the target area, and then fingerprint collection is carried out on the target area, so that the influence of temperature factors on fingerprint identification can be reduced, and the accuracy of fingerprint identification is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1A is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 1B is a schematic structural diagram of another electronic device provided in the embodiment of the present application;
fig. 1C is a schematic flowchart of a fingerprint identification method according to an embodiment of the present application;
FIG. 1D is a schematic illustration showing a display screen of an electronic device divided into a plurality of regions according to an embodiment of the present application;
FIG. 1E is a schematic illustration of an embodiment of the present application showing a target area of a display screen in a highlighted manner;
FIG. 2 is a schematic flowchart of another fingerprint identification method provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 4A is a block diagram illustrating functional units of a fingerprint identification device according to an embodiment of the present disclosure;
FIG. 4B is a modified structure of the fingerprint recognition device shown in FIG. 4A according to the embodiment of the present application;
fig. 4C is a modified structure of the fingerprint recognition device shown in fig. 4B according to the embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The electronic device related to the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices (smart watches, smart bracelets, wireless headsets, augmented reality/virtual reality devices, smart glasses), computing devices or other processing devices connected to wireless modems, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like, which have wireless communication functions. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.
The following describes embodiments of the present application in detail.
Referring to fig. 1A, fig. 1A is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application, the electronic device 100 includes a storage and processing circuit 110, and a sensor 170 connected to the storage and processing circuit 110, where:
the electronic device 100 may include control circuitry, which may include storage and processing circuitry 110. The storage and processing circuitry 110 may be a memory, such as a hard drive memory, a non-volatile memory (e.g., flash memory or other electronically programmable read-only memory used to form a solid state drive, etc.), a volatile memory (e.g., static or dynamic random access memory, etc.), etc., and the embodiments of the present application are not limited thereto. Processing circuitry in storage and processing circuitry 110 may be used to control the operation of electronic device 100. The processing circuitry may be implemented based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, display driver integrated circuits, and the like.
The storage and processing circuitry 110 may be used to run software in the electronic device 100, such as an Internet browsing application, a Voice Over Internet Protocol (VOIP) telephone call application, an email application, a media playing application, operating system functions, and so forth. Such software may be used to perform control operations such as, for example, camera-based image capture, ambient light measurement based on an ambient light sensor, proximity sensor measurement based on a proximity sensor, information display functionality based on status indicators such as status indicator lights of light emitting diodes, touch event detection based on a touch sensor, functionality associated with displaying information on multiple (e.g., layered) display screens, operations associated with performing wireless communication functionality, operations associated with collecting and generating audio signals, control operations associated with collecting and processing button press event data, and other functions in the electronic device 100, to name a few.
The electronic device 100 may include input-output circuitry 150. The input-output circuit 150 may be used to enable the electronic device 100 to input and output data, i.e., to allow the electronic device 100 to receive data from an external device and also to allow the electronic device 100 to output data from the electronic device 100 to the external device. The input-output circuit 150 may further include a sensor 170. The sensor 170 may include an ultrasonic module and a temperature sensor, and may further include an ambient light sensor, a proximity sensor based on light and capacitance, a touch sensor (for example, based on an optical touch sensor and/or a capacitive touch sensor, where the touch sensor may be a part of a touch display screen, or may be used independently as a touch sensor structure), an acceleration sensor, and other sensors, and the ultrasonic module may be integrated below the display screen, or the ultrasonic module may be disposed on a side surface or a back surface of the electronic device, which is not limited herein, and the ultrasonic module may be used to collect a fingerprint image.
Input-output circuit 150 may also include one or more display screens, such as display screen 130. The display 130 may include one or a combination of liquid crystal display, organic light emitting diode display, electronic ink display, plasma display, display using other display technologies. The display screen 130 may include an array of touch sensors (i.e., the display screen 130 may be a touch display screen). The touch sensor may be a capacitive touch sensor formed by a transparent touch sensor electrode (e.g., an Indium Tin Oxide (ITO) electrode) array, or may be a touch sensor formed using other touch technologies, such as acoustic wave touch, pressure sensitive touch, resistive touch, optical touch, and the like, and the embodiments of the present application are not limited thereto.
The electronic device 100 may also include an audio component 140. The audio component 140 may be used to provide audio input and output functionality for the electronic device 100. The audio components 140 in the electronic device 100 may include a speaker, a microphone, a buzzer, a tone generator, and other components for generating and detecting sound.
The communication circuit 120 may be used to provide the electronic device 100 with the capability to communicate with external devices. The communication circuit 120 may include analog and digital input-output interface circuits, and wireless communication circuits based on radio frequency signals and/or optical signals. The wireless communication circuitry in communication circuitry 120 may include radio-frequency transceiver circuitry, power amplifier circuitry, low noise amplifiers, switches, filters, and antennas. For example, the wireless Communication circuitry in Communication circuitry 120 may include circuitry to support Near Field Communication (NFC) by transmitting and receiving Near Field coupled electromagnetic signals. For example, the communication circuit 120 may include a near field communication antenna and a near field communication transceiver. The communications circuitry 120 may also include a cellular telephone transceiver and antenna, a wireless local area network transceiver circuitry and antenna, and so forth.
The electronic device 100 may further include a battery, power management circuitry, and other input-output units 160. The input-output unit 160 may include buttons, joysticks, click wheels, scroll wheels, touch pads, keypads, keyboards, cameras, light emitting diodes and other status indicators, and the like.
A user may input commands through input-output circuitry 150 to control the operation of electronic device 100, and may use output data of input-output circuitry 150 to enable receipt of status information and other outputs from electronic device 100.
In a possible example, taking the ultrasonic module below the display screen as an example, as shown in fig. 1B, fig. 1B is a schematic structural diagram of an electronic device, and the electronic device 100 may include a Glass Cover plate (Cover Glass)210, a display screen (OLED)220, an adhesion layer (Adhesive)230, a substrate (TFT Glass)240, a Pixel layer (Pixel)250, a piezoelectric material layer (polymer) 260, an Ag Ink layer 270, and a solidified glue layer (DAF) 280. Of course, the glass cover plate may further include a film layer (film), which may be a tempered film for protecting the display screen of the electronic device.
Further, the ultrasonic module may include: the TFT Glass layer, the Pixel layer, the Ag Ink layer and the solidification glue layer. The TFT Glass layer is used for metal wiring and material coating; the Pixel layer is used for embedding a Metal electrode on the TFT Glass, is used as a cathode for ultrasonic transmission/reception and is also called a piezoelectric transduction material, and can realize material deformation-voltage interconversion; an Ag Ink layer used as a positive electrode for ultrasonic transmission/reception; the DAF is a solidified glue and is used for protecting the ultrasonic module; the Adhesive layer is the Adhesive for standing the ultrasonic module at the bottom of the OLED screen.
In a specific implementation, the ultrasound module may include 2 states, a TX state (for transmitting ultrasound) and an RX state (for receiving ultrasound).
In a TX state, high-frequency (usually 10MHz level) oscillation signals such as sine waves are provided through electrodes (a Pixel negative electrode and an Ag Ink positive electrode) at two ends of a Copolymer (piezoelectric material), the Copolymer can generate vibration of response frequency and emit ultrasonic waves, the ultrasonic waves transmitted upwards reach fingerprints in contact with the surface of a display screen after penetrating through an OLED screen, and when a fingerprint valley ridge is attached to the display screen, the difference between the acoustic resistance characteristic of air in the fingerprint valley and the acoustic resistance characteristic of glass on the surface of the screen is large, the difference between the acoustic resistance characteristic of skin tissues of the fingerprint ridge and the acoustic resistance characteristic of the glass on the surface of the screen is large, and therefore the intensity of reflection signals of the fingerprint ridge to the ultrasonic waves is different.
In an RX state, after reflected ultrasonic waves pass through the display screen again and reach the ultrasonic module (Pixel-Copolymer-Ag Ink), the Copolymer is caused to vibrate to generate electric signals, the vibration intensity of the Copolymer in Pixel areas corresponding to fingerprint valley ridges at different positions is different, so that potential differences received by the pixels at different positions are different (the Ag Ink is equal potential), the potential differences are converted into two-dimensional image signals, and an ultrasonic fingerprint image is obtained.
The electronic device described with reference to fig. 1A and 1B may be configured to implement the following functions:
the processing circuit is used for acquiring a target temperature parameter detected by the temperature sensor; determining a target area in the plurality of areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
the display screen is used for highlighting the target area to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area and carrying out fingerprint collection on the target area through the target ultrasonic sensor.
The multiple regions correspond to multiple preset mapping relationships one to one, each mapping relationship is a mapping relationship between a temperature parameter and an unlocking success rate, and in the aspect of determining a target region in the multiple regions according to the target temperature parameter, the processing circuit is specifically configured to:
determining a reference unlocking success rate of a corresponding area under the target temperature parameter according to each mapping relation in the plurality of mapping relations to obtain a plurality of reference unlocking success rates, wherein the plurality of reference unlocking success rates correspond to the plurality of areas one to one;
and determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
In one possible example, the processing circuit is further to:
acquiring a plurality of historical fingerprint unlocking records, wherein each historical fingerprint unlocking record comprises a historical matching result, a historical temperature parameter and a historical fingerprint area, wherein the historical fingerprint result is that a fingerprint is successfully matched or the fingerprint is not matched, and the historical fingerprint area is one of the plurality of areas;
determining a plurality of historical unlocking success rates of each area in the plurality of areas under a plurality of historical temperature parameters according to the plurality of historical fingerprint unlocking records, wherein each historical temperature parameter corresponds to one historical unlocking success rate;
and establishing a mapping relation between the temperature parameters and the unlocking success rate according to a plurality of historical temperature parameters and a plurality of historical unlocking success rates corresponding to each of the plurality of regions to obtain a plurality of mapping relations, wherein each mapping relation corresponds to one region.
In one possible example, the target temperature parameter includes a current ambient temperature and a current display screen temperature, and in the determining the target area of the plurality of areas according to the target temperature parameter, the processing circuit is specifically configured to:
determining a first unlocking success rate of each area in a plurality of areas on the display screen at the current ambient temperature to obtain a plurality of first unlocking success rates;
determining a first area corresponding to a maximum target first unlocking success rate in the plurality of first unlocking success rates;
determining a second unlocking success rate corresponding to each area in the plurality of areas under the current display screen temperature to obtain a plurality of second unlocking success rates;
determining a second area corresponding to a maximum target second unlocking success rate in the plurality of second unlocking success rates;
and if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, taking the first area as the target area, and if the target first unlocking success rate is less than the target second unlocking success rate, taking the second area as the target area.
In one possible example, in said highlighting the target area, the display screen is specifically configured to:
displaying the target area with first display brightness when the display screen is in a screen-off state;
and displaying the target area with second display brightness when the display screen is in a bright screen state, wherein the second display brightness is greater than the first display brightness.
In one possible example, the ultrasound module is configured to acquire a first fingerprint image for the target area;
the processing circuit is further configured to match the first fingerprint image with a preset fingerprint template, and execute a preset unlocking operation if the first fingerprint image is successfully matched with the preset fingerprint template.
It can be seen that, the electronic device described in the embodiments of the present application includes a temperature sensor, a display screen, and an ultrasonic module, where the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, each region corresponds to at least one ultrasonic sensor, a target region in the plurality of regions is determined according to a target temperature parameter detected by the temperature sensor by obtaining the target temperature parameter, the target region is a region with the highest unlocking success rate corresponding to the temperature parameter, the target region is highlighted by the display screen to indicate a finger of a target object to touch the target region, the target ultrasonic sensor corresponding to the target region is turned on, and a fingerprint of the target region is acquired by the target ultrasonic sensor, so that the target region can be determined according to the target temperature parameter, indicate user's finger touch-control target area, and then carry out fingerprint collection to the target area to, reducible temperature factor improves fingerprint identification's degree of accuracy to fingerprint identification's influence.
Referring to fig. 1C, fig. 1C is a schematic flow chart of a fingerprint identification method according to an embodiment of the present disclosure, and as shown in the drawing, the fingerprint identification method is applied to the electronic device shown in fig. 1A, where the electronic device includes a temperature sensor, an ultrasonic module, and a display screen, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, and each region corresponds to at least one ultrasonic sensor, and the fingerprint identification method includes:
101. and acquiring a target temperature parameter detected by the temperature sensor.
Wherein the target temperature parameter may include at least one of: ambient temperature, display screen temperature, temperature inside the electronic device, etc.
In the embodiment of the application, the temperature sensor in the accessible electronic equipment detects target temperature parameter to, electronic equipment can acquire the target temperature sensor that temperature sensor detected, wherein, can set up temperature sensor in the display screen below, detects the display screen temperature through the temperature sensor who sets up in the display screen below.
102. And determining a target area in the plurality of areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate.
In the embodiment of the application, as shown in fig. 1D, the display screen may be divided into a plurality of regions in advance, so that a target region in the plurality of regions may be determined according to the target temperature parameter, and a region with the highest unlocking success rate corresponding to the target temperature parameter is used as the target region.
Optionally, the multiple regions correspond to multiple preset mapping relationships one to one, each mapping relationship is a mapping relationship between a temperature parameter and an unlocking success rate, and the determining, in the step 102, a target region in the multiple regions according to the target temperature parameter may include the following steps 21 to 22:
21. determining a reference unlocking success rate of a corresponding area under the target temperature parameter according to each mapping relation in the plurality of mapping relations to obtain a plurality of reference unlocking success rates, wherein the plurality of reference unlocking success rates correspond to the plurality of areas one to one;
22. and determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
In the embodiment of the application, a memory of the electronic device may store a plurality of mapping relationships in advance, the plurality of regions correspond to a plurality of preset mapping relationships one to one, and the mapping relationship corresponding to each region is a mapping relationship between a temperature parameter and an unlocking success rate, so that, for each region in the plurality of regions, a reference unlocking success rate corresponding to a target temperature parameter may be determined according to the mapping relationship corresponding to the region, and further, a plurality of reference unlocking success rates corresponding to the plurality of regions may be determined. Further, the area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates can be determined as the target area.
Optionally, in this embodiment of the present application, the following steps may also be included:
a1, acquiring a plurality of historical fingerprint unlocking records, wherein each historical fingerprint unlocking record comprises a historical matching result, a historical temperature parameter and a historical fingerprint area, and the historical fingerprint area is one of the plurality of areas;
a2, determining a plurality of historical unlocking success rates of each area in the plurality of areas under a plurality of historical temperature parameters according to the plurality of historical fingerprint unlocking records, wherein each historical temperature parameter corresponds to one historical unlocking success rate;
a3, establishing a mapping relation between the temperature parameter and the unlocking success rate according to a plurality of historical temperature parameters and a plurality of historical unlocking success rates corresponding to each of the plurality of areas to obtain a plurality of mapping relations, wherein each mapping relation corresponds to one area.
In the embodiment of the present application, a plurality of historical fingerprint unlocking records may be obtained, where each historical fingerprint unlocking record may include a historical matching result, a historical temperature parameter, and a historical fingerprint area of successful fingerprint matching or failed fingerprint matching, and as shown in the following table, an example of a historical fingerprint unlocking record provided in the embodiment of the present application is provided:
serial number Historical temperatureDegree parameter Historical fingerprint area History matching results
1 25℃ Y1 Successful fingerprint matching
2 28℃ Y2 Successful fingerprint matching
3 10℃ Y8 Failure of fingerprint matching
4 5℃ Y4 Failure of fingerprint matching
5 38℃ Y5 Successful fingerprint matching
6 25℃ Y2 Failure of fingerprint matching
7 29℃ Y5 Successful fingerprint matching
8 28℃ Y9 Successful fingerprint matching
… … … …
Wherein, the display screen can be divided into 9 areas of Y1-Y9, and any area Y in the 9 areas of Y1-Y9iCan count the region YiIn the method, a plurality of history matching results corresponding to each history temperature parameter in a plurality of history temperature parameters can determine the history unlocking success rate corresponding to the history temperature parameter according to the plurality of history matching results corresponding to each history temperature parameter, and further, the area Y can be obtainediMultiple historical unlocking success rates corresponding to multiple historical temperature parameters, and further according to the region YiThe plurality of historical temperature parameters and the plurality of historical unlocking success rates establish a mapping relationship between the temperature parameters and the unlocking success rates. Further, a mapping relation between the temperature parameter and the unlocking success rate can be established for each of a plurality of areas of the display screen to obtain a plurality of mapping relations, and each mapping relation corresponds to one area.
Optionally, the step 102 of determining the target area of the plurality of areas according to the target temperature parameter may include the following steps:
23. determining a first unlocking success rate of each area in a plurality of areas on the display screen at the current ambient temperature to obtain a plurality of first unlocking success rates;
24. determining a first area corresponding to a maximum target first unlocking success rate in the plurality of first unlocking success rates;
25. determining a second unlocking success rate corresponding to each area in the plurality of areas under the current display screen temperature to obtain a plurality of second unlocking success rates;
26. determining a second area corresponding to a maximum target second unlocking success rate in the plurality of second unlocking success rates;
27. and if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, taking the first area as the target area, and if the target first unlocking success rate is less than the target second unlocking success rate, taking the second area as the target area.
In the embodiment of the present application, the target temperature parameter may include a current ambient temperature and a current display screen temperature, so that a target area among the plurality of areas may be determined according to the current ambient temperature and the current display screen temperature. Specifically, a memory of the electronic device may pre-store a plurality of first mapping relationships, each of the first mapping relationships being a mapping relationship between an ambient temperature and an unlocking success rate, and the plurality of first mapping relationships being in one-to-one correspondence with the plurality of regions, and further, for each of the plurality of regions, a first unlocking success rate corresponding to a current ambient temperature may be determined according to a preset first mapping relationship between the ambient temperature and the unlocking success rate, so that a first unlocking success rate corresponding to the current ambient temperature may be determined according to a first mapping relationship between the ambient temperature and the unlocking success rate corresponding to each of the plurality of regions, respectively, and a plurality of first unlocking success rates may be obtained.
Further, a first region corresponding to a maximum target first unlocking success rate among the plurality of first unlocking success rates may be determined.
In addition, the memory of the electronic device may further pre-store a plurality of second mapping relationships, each second mapping relationship being a mapping relationship between the display screen temperature and the unlocking success rate, the plurality of first mapping relationships corresponding to the plurality of areas one to one, and further, for each of the plurality of areas, the second unlocking success rate corresponding to the current display screen temperature may be determined according to a preset second mapping relationship between the display screen temperature and the unlocking success rate, so that the second unlocking success rate corresponding to the current display screen temperature in the area may be determined according to the second mapping relationship between the display screen temperature corresponding to each of the plurality of areas and the unlocking success rate, respectively, and the plurality of second unlocking success rates may be obtained.
Further, a second region corresponding to a maximum target second unlocking success rate among the plurality of second unlocking success rates may be determined.
If the first area and the second area are the same area on the display screen, the area can be directly determined as a target area, if the first area and the second area are not the same area, the first area or the second area can be further determined as the target area, specifically, if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, it is indicated that the unlocking success rate corresponding to the first area is higher, and further, the first area can be used as the target area; if the target first unlocking success rate is smaller than the target second unlocking success rate, the unlocking success rate corresponding to the second area is higher, and therefore the second area can be used as the target area.
103. Highlighting the target area through the display screen to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area, and performing fingerprint acquisition on the target area through the target ultrasonic sensor.
The target object refers to a user who performs fingerprint collection.
The target area is highlighted through the display screen, a user can be indicated to touch the target area through fingers, and then fingerprint collection is conducted on the target area through the ultrasonic module. Specifically, the display screen may highlight the target area, as shown in fig. 1E, which is a schematic illustration of a demonstration that the target area is highlighted according to an embodiment of the present application.
Furthermore, the target ultrasonic sensor corresponding to the target area can be started, when the finger of the target object touches the target area of the display screen, fingerprint collection can be carried out on the target area through the target ultrasonic sensor, therefore, fingerprint identification can be carried out on the target area with higher fingerprint unlocking success rate under the target temperature parameter, the influence of temperature factors on the fingerprint identification can be reduced, and the accuracy of the fingerprint identification is improved.
Optionally, in step 103, the highlighting the target area may include the following steps:
31. displaying the target area with first display brightness when the display screen is in a screen-off state;
32. and displaying the target area with second display brightness when the display screen is in a bright screen state, wherein the second display brightness is greater than the first display brightness.
In the embodiment of the application, it is considered that highlighting the target area affects the service life of the target area of the display screen, and therefore, when the display screen is in the off-screen state, the target area can be displayed with first display brightness, when the display screen is in the on-screen state, the target area is displayed with second display brightness, the second display brightness is greater than the first display brightness, when the first display brightness is lower, the user can clearly distinguish the target area on the display screen, when the display screen is in the on-screen state, the display brightness of the display screen is higher, and therefore, the target area can be displayed with the second display brightness, specifically, the difference between the display color of the target area and the display colors of other areas can be set to be larger, and thus, the user can quickly distinguish the target area from the display screen. The second display brightness is larger than the first display brightness, and the electric quantity consumption of the display screen in the screen-off state can be reduced.
Optionally, in this embodiment of the application, after the target area is highlighted on the display screen, the method may further include the following steps:
b1, acquiring a first fingerprint image aiming at the target area through the ultrasonic module;
and B2, matching the first fingerprint image with a preset fingerprint template, and if the first fingerprint image is successfully matched with the preset fingerprint template, executing a preset unlocking operation.
In the embodiment of the application, after the target area is highlighted through the display screen, if the target area is detected to be in a touched state, a first fingerprint image aiming at the target area can be acquired through the ultrasonic module.
The preset fingerprint template can be pre-stored in the electronic equipment. Furthermore, the first fingerprint image can be matched with a preset fingerprint template to obtain a matching result of successful matching or failed matching. If the first fingerprint image is successfully matched with the preset fingerprint template, the preset unlocking operation can be executed.
Optionally, in the step B2, the matching the first fingerprint image with a preset fingerprint template may include the following steps:
b21, performing feature extraction on the first fingerprint image to obtain a feature point set;
b22, analyzing the feature point distribution of a plurality of feature points in the feature point set on the first fingerprint image;
b23, performing circular image interception on the first fingerprint image according to M different circle centers to obtain M circular area images, wherein M is an integer greater than 3;
b24, selecting a target circular area image from the M circular area images, wherein the target circular area image contains a larger number of feature points than other circular area images in the M circular area images;
b25, dividing the target circular area image to obtain N circular rings, wherein the widths of the N circular rings are the same;
b26, starting from the circular ring with the smallest radius in the N circular rings, sequentially matching the N circular rings with the preset fingerprint template for feature points, and accumulating the matching values of the matched circular rings;
and B27, stopping feature point matching immediately when the accumulated matching value is larger than the preset matching threshold value, and outputting to confirm that the first fingerprint image is matched with the preset fingerprint template.
Wherein, the electronic device can extract the feature of the first fingerprint image to obtain a feature point set, further analyze the feature point distribution of the first fingerprint image, intercept the target area image according to M different circle centers to obtain M circular area images, M is an integer larger than 3, select the target circular area image from the M circular area images, the number of the feature points contained in the target circular area image is larger than that of other circular area images in the M circular area images, divide the target circular area image to obtain N circular rings, the ring widths of the N circular rings are the same, the N circular rings are sequentially matched with the feature points of the preset fingerprint template from the circular ring with the smallest radius in the N circular rings, and accumulate the matching values of the matched circular rings, thus, the feature points of different positions or different fingerprints can be used for matching, the fingerprint identification method based on the image matching is equivalent to sampling the whole first fingerprint image, the sampling can cover the whole fingerprint area, therefore, corresponding standard reaching characteristics can be found from each area for matching, when the accumulated matching value is larger than a preset matching threshold value, the characteristic point matching is immediately stopped, and a prompt message of successful fingerprint identification is output, so that the fingerprint identification can be quickly and accurately carried out.
It can be seen that the fingerprint identification method described in the embodiments of the present application is applied to an electronic device, the electronic device includes a temperature sensor, a display screen, and an ultrasonic module, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, each region corresponds to at least one of the ultrasonic sensors, a target region of the plurality of regions is determined according to a target temperature parameter detected by the temperature sensor by obtaining the target temperature parameter, the target region is a region with the highest unlocking success rate corresponding to the temperature parameter, the target region is highlighted by the display screen to indicate a finger of a target object to touch the target region, the target ultrasonic sensor corresponding to the target region is turned on, and the target ultrasonic sensor performs fingerprint acquisition on the target region, so that, the target area is confirmed to accessible target temperature parameter, instructs the user to point touch-control target area, and then carries out fingerprint collection to the target area to, reducible temperature factor improves fingerprint identification's the degree of accuracy.
Referring to fig. 2 in a manner consistent with the embodiment shown in fig. 1C, fig. 2 is a schematic flowchart of a fingerprint identification method provided in an embodiment of the present application, and as shown in the drawing, the fingerprint identification method is applied to the electronic device shown in fig. 1A, where the electronic device includes a temperature sensor, an ultrasonic module, and a display screen, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, and each region corresponds to at least one of the ultrasonic sensors; the fingerprint identification method comprises the following steps:
201. and acquiring a target temperature parameter detected by the temperature sensor.
202. The multiple regions correspond to a plurality of preset mapping relations one to one, each mapping relation is a mapping relation between a temperature parameter and an unlocking success rate, a reference unlocking success rate of the corresponding region under the target temperature parameter is determined according to each mapping relation in the multiple mapping relations, multiple reference unlocking success rates are obtained, and the multiple reference unlocking success rates correspond to the multiple regions one to one.
203. And determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
204. Highlighting the target area through a display screen to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area, and performing fingerprint acquisition on the target area through the target ultrasonic sensor.
205. Acquiring a first fingerprint image aiming at the target area through the ultrasonic module.
206. And matching the first fingerprint image with a preset fingerprint template, and executing a preset unlocking operation if the first fingerprint image is successfully matched with the preset fingerprint template.
For the detailed description of the steps 201 to 206, reference may be made to the corresponding steps of the fingerprint identification method described in the above fig. 1C, and details are not repeated here.
It can be seen that the fingerprint identification method described in the embodiments of the present application is applied to an electronic device, the electronic device includes a temperature sensor, a display screen, and an ultrasonic module, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, each region corresponds to at least one of the ultrasonic sensors, by obtaining a target temperature parameter detected by the temperature sensor, determining a reference unlocking success rate of the corresponding region under the target temperature parameter according to each of a plurality of preset mapping relationships, obtaining a plurality of reference unlocking success rates, determining a region corresponding to a maximum reference unlocking success rate among the plurality of reference unlocking success rates as a target region, highlighting the target region through the display screen to indicate a finger of a target object to touch the target region, and turning on the target ultrasonic sensor corresponding to the target region, and carry out fingerprint collection through target ultrasonic sensor to the target area, acquire the first fingerprint image to the target area through the ultrasonic wave module, match first fingerprint image with predetermineeing the fingerprint template, if first fingerprint image with predetermineeing the fingerprint template and match successfully, carry out and predetermine the unblock operation so, accessible target temperature parameter confirms the target area, instructs the user to point touch-control target area, and then carries out fingerprint collection to the target area to, reducible temperature factor improves fingerprint identification's the degree of accuracy.
Referring to fig. 3 in keeping with the above embodiments, fig. 3 is a schematic structural diagram of an electronic device 300 according to an embodiment of the present application, as shown in the figure, the electronic device 300 includes a processor 310, a memory 320, a communication interface 330, and one or more programs 321, the electronic device further includes an ultrasound module 340, a display 350, and a temperature sensor 360, the one or more programs are stored in the memory and configured to be executed by the processor, and in an embodiment of the present application, the programs 321 include instructions for performing the following steps:
acquiring a target temperature parameter detected by the temperature sensor;
determining a target area in the plurality of areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
highlighting the target area through the display screen to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area, and performing fingerprint acquisition on the target area through the target ultrasonic sensor.
It can be seen that the electronic device described in the embodiments of the present application includes a temperature sensor, a display screen, and an ultrasonic module, where the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, each region corresponds to at least one of the ultrasonic sensors, a target region in the plurality of regions is determined according to a target temperature parameter detected by the temperature sensor by obtaining the target temperature parameter, the target region is a region with the highest unlocking success rate corresponding to the temperature parameter, the target region is highlighted by the display screen to indicate a finger of a target object to touch the target region, the target ultrasonic sensor corresponding to the target region is turned on, and a fingerprint of the target region is collected by the target ultrasonic sensor, so that the target region can be determined by the target temperature parameter, indicate user's finger touch-control target area, and then carry out fingerprint collection to the target area to, reducible temperature factor improves fingerprint identification's degree of accuracy to fingerprint identification's influence.
In one possible example, the plurality of areas correspond to a plurality of preset mapping relationships one to one, each mapping relationship is a mapping relationship between a temperature parameter and an unlocking success rate, and in the aspect of determining a target area in the plurality of areas according to the target temperature parameter, the program 321 includes instructions for performing the following steps:
determining a reference unlocking success rate of a corresponding area under the target temperature parameter according to each mapping relation in the plurality of mapping relations to obtain a plurality of reference unlocking success rates, wherein the plurality of reference unlocking success rates correspond to the plurality of areas one to one;
and determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
In one possible example, the program 321 further includes instructions for performing the following steps:
acquiring a plurality of historical fingerprint unlocking records, wherein each historical fingerprint unlocking record comprises a historical matching result, a historical temperature parameter and a historical fingerprint area, wherein the historical fingerprint result is that a fingerprint is successfully matched or the fingerprint is not matched, and the historical fingerprint area is one of the plurality of areas;
determining a plurality of historical unlocking success rates of each area in the plurality of areas under a plurality of historical temperature parameters according to the plurality of historical fingerprint unlocking records, wherein each historical temperature parameter corresponds to one historical unlocking success rate;
and establishing a mapping relation between the temperature parameters and the unlocking success rate according to a plurality of historical temperature parameters and a plurality of historical unlocking success rates corresponding to each of the plurality of regions to obtain a plurality of mapping relations, wherein each mapping relation corresponds to one region.
In one possible example, the target temperature parameters include a current ambient temperature and a current display screen temperature, and in the determining the target area of the plurality of areas according to the target temperature parameters, the program 321 includes instructions for:
determining a first unlocking success rate of each area in a plurality of areas on the display screen at the current ambient temperature to obtain a plurality of first unlocking success rates;
determining a first area corresponding to a maximum target first unlocking success rate in the plurality of first unlocking success rates;
determining a second unlocking success rate corresponding to each area in the plurality of areas under the current display screen temperature to obtain a plurality of second unlocking success rates;
determining a second area corresponding to a maximum target second unlocking success rate in the plurality of second unlocking success rates;
and if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, taking the first area as the target area, and if the target first unlocking success rate is less than the target second unlocking success rate, taking the second area as the target area.
In one possible example, in said highlighting said target area, the program 321 above further comprises instructions for:
displaying the target area with first display brightness when the display screen is in a screen-off state;
and displaying the target area with second display brightness when the display screen is in a bright screen state, wherein the second display brightness is greater than the first display brightness.
In one possible example, the program further includes instructions for performing the steps of:
acquiring a first fingerprint image aiming at the target area through the ultrasonic module;
and matching the first fingerprint image with a preset fingerprint template, and executing a preset unlocking operation if the first fingerprint image is successfully matched with the preset fingerprint template.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the electronic device may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Fig. 4A is a block diagram of functional units of a fingerprint identification device 400 according to an embodiment of the present application. The fingerprint identification device 400 is applied to electronic equipment, wherein the electronic equipment comprises a temperature sensor, an ultrasonic module and a display screen, the display screen comprises a plurality of areas, the ultrasonic module comprises a plurality of ultrasonic sensors arranged below the display screen, and each area corresponds to at least one ultrasonic sensor; the apparatus 400 comprises: an acquisition unit 401, a determination unit 402, and a display unit 403, wherein,
the acquiring unit 401 is configured to acquire a target temperature parameter detected by the temperature sensor;
the determining unit 402 is configured to determine a target area in the multiple areas according to the target temperature parameter, where the target area is an area corresponding to the target temperature parameter and having a highest unlocking success rate;
the display unit 403 is configured to highlight the target area through the display screen to indicate a finger of a target object to touch the target area, turn on a target ultrasonic sensor corresponding to the target area, and perform fingerprint acquisition on the target area through the target ultrasonic sensor.
It can be seen that the fingerprint identification apparatus described in the embodiments of the present application is applied to an electronic device, the electronic device includes a temperature sensor, a display screen, and an ultrasonic module, the display screen includes a plurality of regions, the ultrasonic module includes a plurality of ultrasonic sensors disposed below the display screen, each region corresponds to at least one of the ultrasonic sensors, a target region of the plurality of regions is determined according to a target temperature parameter detected by the temperature sensor by obtaining the target temperature parameter, the target region is a region with a highest unlocking success rate corresponding to the temperature parameter, the target region is highlighted by the display screen to indicate a finger of a target object to touch the target region, the target ultrasonic sensor corresponding to the target region is turned on, and the target ultrasonic sensor performs fingerprint acquisition on the target region, so that, the target area is confirmed to accessible target temperature parameter, instructs the user to point touch-control target area, and then carries out fingerprint collection to the target area to, reducible temperature factor improves fingerprint identification's the degree of accuracy.
Optionally, the multiple regions correspond to a plurality of preset mapping relationships one to one, each mapping relationship is a mapping relationship between a temperature parameter and an unlocking success rate, and in the aspect of determining a target region in the multiple regions according to the target temperature parameter, the determining unit 402 is specifically configured to:
determining a reference unlocking success rate of a corresponding area under the target temperature parameter according to each mapping relation in the plurality of mapping relations to obtain a plurality of reference unlocking success rates, wherein the plurality of reference unlocking success rates correspond to the plurality of areas one to one;
and determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
Alternatively, as shown in fig. 4B, fig. 4B is a modified structure of the fingerprint recognition device shown in fig. 4A, and compared with fig. 4A, the device may further include: a setup unit 404 is provided, in which,
the obtaining unit 401 is further configured to obtain a plurality of historical fingerprint unlocking records, where each historical fingerprint unlocking record includes a historical matching result, a historical temperature parameter, and a historical fingerprint area, where a fingerprint matching is successful or a fingerprint matching is failed, and the historical fingerprint area is one of the plurality of areas;
the determining unit 402 is further configured to determine, according to the historical fingerprint unlocking records, multiple historical unlocking success rates of each of the multiple areas under multiple historical temperature parameters, where each of the historical temperature parameters corresponds to one historical unlocking success rate;
the establishing unit 404 is configured to establish a mapping relationship between the temperature parameter and the unlocking success rate according to a plurality of historical temperature parameters and a plurality of historical unlocking success rates corresponding to each of the plurality of regions, so as to obtain a plurality of mapping relationships, where each mapping relationship corresponds to one region.
Optionally, the target temperature parameter includes a current ambient temperature and a current display screen temperature, and in the aspect of determining the target area in the plurality of areas according to the target temperature parameter, the determining unit 402 is specifically configured to:
determining a first unlocking success rate of each area in a plurality of areas on the display screen at the current ambient temperature to obtain a plurality of first unlocking success rates;
determining a first area corresponding to a maximum target first unlocking success rate in the plurality of first unlocking success rates;
determining a second unlocking success rate corresponding to each area in the plurality of areas under the current display screen temperature to obtain a plurality of second unlocking success rates;
determining a second area corresponding to a maximum target second unlocking success rate in the plurality of second unlocking success rates;
and if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, taking the first area as the target area, and if the target first unlocking success rate is less than the target second unlocking success rate, taking the second area as the target area.
Optionally, in terms of the highlighting the target area, the display unit 403 is specifically configured to:
displaying the target area with first display brightness when the display screen is in a screen-off state;
and displaying the target area with second display brightness when the display screen is in a bright screen state, wherein the second display brightness is greater than the first display brightness.
Alternatively, as shown in fig. 4C, fig. 4C is a modified structure of the fingerprint recognition device shown in fig. 4A or fig. 4B, which is compared with fig. 4B, the device may further include: a matching unit 405 and an execution unit 406, wherein,
the acquisition unit is further used for acquiring a first fingerprint image aiming at the target area through the ultrasonic module;
the matching unit 405 is configured to match the first fingerprint image with a preset fingerprint template, and if the first fingerprint image is successfully matched with the preset fingerprint template, the execution unit 406 executes a preset unlocking operation.
It can be understood that the functions of each program module of the fingerprint identification device of this embodiment may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the related description of the foregoing method embodiment, which is not described herein again.
Embodiments of the present application also provide a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, the computer program enabling a computer to execute part or all of the steps of any one of the methods described in the above method embodiments, and the computer includes an electronic device.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising an electronic device.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (20)

1. An electronic device, comprising a processing circuit, and a temperature sensor, a display screen and an ultrasonic module connected to the processing circuit, wherein the display screen comprises a plurality of regions, the ultrasonic module comprises a plurality of ultrasonic sensors disposed below the display screen, each region corresponds to at least one of the ultrasonic sensors, and wherein,
the processing circuit is used for acquiring a target temperature parameter detected by the temperature sensor; determining a target area in the plurality of areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
the display screen is used for highlighting the target area to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area and carrying out fingerprint collection on the target area through the target ultrasonic sensor.
2. The electronic device according to claim 1, wherein the plurality of regions correspond to a plurality of preset mapping relationships one to one, each mapping relationship is a mapping relationship between a temperature parameter and an unlocking success rate, and in the aspect of determining a target region among the plurality of regions according to the target temperature parameter, the processing circuit is specifically configured to:
determining a reference unlocking success rate of a corresponding area under the target temperature parameter according to each mapping relation in the plurality of mapping relations to obtain a plurality of reference unlocking success rates, wherein the plurality of reference unlocking success rates correspond to the plurality of areas one to one;
and determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
3. The electronic device of claim 2, wherein the processing circuit is further configured to:
acquiring a plurality of historical fingerprint unlocking records, wherein each historical fingerprint unlocking record comprises a historical matching result, a historical temperature parameter and a historical fingerprint area, wherein the historical fingerprint result is that a fingerprint is successfully matched or the fingerprint is not matched, and the historical fingerprint area is one of the plurality of areas;
determining a plurality of historical unlocking success rates of each area in the plurality of areas under a plurality of historical temperature parameters according to the plurality of historical fingerprint unlocking records, wherein each historical temperature parameter corresponds to one historical unlocking success rate;
and establishing a mapping relation between the temperature parameters and the unlocking success rate according to a plurality of historical temperature parameters and a plurality of historical unlocking success rates corresponding to each of the plurality of regions to obtain a plurality of mapping relations, wherein each mapping relation corresponds to one region.
4. The electronic device of claim 1, wherein the target temperature parameters include a current ambient temperature and a current display screen temperature, and wherein, in the determining the target one of the plurality of regions based on the target temperature parameters, the processing circuit is specifically configured to:
determining a first unlocking success rate of each area in a plurality of areas on the display screen at the current ambient temperature to obtain a plurality of first unlocking success rates;
determining a first area corresponding to a maximum target first unlocking success rate in the plurality of first unlocking success rates;
determining a second unlocking success rate corresponding to each area in the plurality of areas under the current display screen temperature to obtain a plurality of second unlocking success rates;
determining a second area corresponding to a maximum target second unlocking success rate in the plurality of second unlocking success rates;
and if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, taking the first area as the target area, and if the target first unlocking success rate is less than the target second unlocking success rate, taking the second area as the target area.
5. The electronic device according to any of claims 1-4, wherein in said highlighting the target area, the display is specifically configured to:
displaying the target area with first display brightness when the display screen is in a screen-off state;
and displaying the target area with second display brightness when the display screen is in a bright screen state, wherein the second display brightness is greater than the first display brightness.
6. The electronic device of any of claims 1-4,
the ultrasonic module is used for acquiring a first fingerprint image aiming at the target area;
the processing circuit is further configured to match the first fingerprint image with a preset fingerprint template, and execute a preset unlocking operation if the first fingerprint image is successfully matched with the preset fingerprint template.
7. The fingerprint identification method is applied to electronic equipment, the electronic equipment comprises a temperature sensor, an ultrasonic module and a display screen, the display screen comprises a plurality of areas, the ultrasonic module comprises a plurality of ultrasonic sensors arranged below the display screen, and each area corresponds to at least one ultrasonic sensor; the method comprises the following steps:
acquiring a target temperature parameter detected by the temperature sensor;
determining a target area in the plurality of areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
highlighting the target area through the display screen to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area, and performing fingerprint acquisition on the target area through the target ultrasonic sensor.
8. The method of claim 7, wherein the plurality of zones correspond to a plurality of preset mapping relationships one to one, each mapping relationship is a mapping relationship between a temperature parameter and an unlocking success rate, and determining a target zone of the plurality of zones according to the target temperature parameter comprises:
determining a reference unlocking success rate of a corresponding area under the target temperature parameter according to each mapping relation in the plurality of mapping relations to obtain a plurality of reference unlocking success rates, wherein the plurality of reference unlocking success rates correspond to the plurality of areas one to one;
and determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
9. The method of claim 8, further comprising:
acquiring a plurality of historical fingerprint unlocking records, wherein each historical fingerprint unlocking record comprises a historical matching result, a historical temperature parameter and a historical fingerprint area, wherein the historical fingerprint result is that a fingerprint is successfully matched or the fingerprint is not matched, and the historical fingerprint area is one of the plurality of areas;
determining a plurality of historical unlocking success rates of each area in the plurality of areas under a plurality of historical temperature parameters according to the plurality of historical fingerprint unlocking records, wherein each historical temperature parameter corresponds to one historical unlocking success rate;
and establishing a mapping relation between the temperature parameters and the unlocking success rate according to a plurality of historical temperature parameters and a plurality of historical unlocking success rates corresponding to each of the plurality of regions to obtain a plurality of mapping relations, wherein each mapping relation corresponds to one region.
10. The method of claim 7, wherein the target temperature parameters include a current ambient temperature and a current display screen temperature, and wherein determining the target area of the plurality of areas based on the target temperature parameters comprises:
determining a first unlocking success rate of each area in a plurality of areas on the display screen at the current ambient temperature to obtain a plurality of first unlocking success rates;
determining a first area corresponding to a maximum target first unlocking success rate in the plurality of first unlocking success rates;
determining a second unlocking success rate corresponding to each area in the plurality of areas under the current display screen temperature to obtain a plurality of second unlocking success rates;
determining a second area corresponding to a maximum target second unlocking success rate in the plurality of second unlocking success rates;
and if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, taking the first area as the target area, and if the target first unlocking success rate is less than the target second unlocking success rate, taking the second area as the target area.
11. The method of any of claims 7-10, wherein the highlighting the target region comprises:
displaying the target area with first display brightness when the display screen is in a screen-off state;
and displaying the target area with second display brightness when the display screen is in a bright screen state, wherein the second display brightness is greater than the first display brightness.
12. The method according to any one of claims 7-10, further comprising:
acquiring a first fingerprint image aiming at the target area through the ultrasonic module;
and matching the first fingerprint image with a preset fingerprint template, and executing a preset unlocking operation if the first fingerprint image is successfully matched with the preset fingerprint template.
13. The fingerprint identification device is characterized by being applied to electronic equipment, wherein the electronic equipment comprises a temperature sensor, an ultrasonic module and a display screen, the display screen comprises a plurality of areas, the ultrasonic module comprises a plurality of ultrasonic sensors arranged below the display screen, and each area corresponds to at least one ultrasonic sensor; the device comprises:
the acquisition unit is used for acquiring a target temperature parameter detected by the temperature sensor;
the determining unit is used for determining a target area in the multiple areas according to the target temperature parameter, wherein the target area is an area corresponding to the target temperature parameter and having the highest unlocking success rate;
the display unit is used for highlighting the target area through the display screen so as to indicate fingers of a target object to touch the target area, starting a target ultrasonic sensor corresponding to the target area and carrying out fingerprint collection on the target area through the target ultrasonic sensor.
14. The apparatus according to claim 13, wherein the plurality of zones correspond to a plurality of preset mapping relationships one to one, each mapping relationship is a mapping relationship between a temperature parameter and an unlocking success rate, and in the aspect of determining a target zone among the plurality of zones according to the target temperature parameter, the determining unit is specifically configured to:
determining a reference unlocking success rate of a corresponding area under the target temperature parameter according to each mapping relation in the plurality of mapping relations to obtain a plurality of reference unlocking success rates, wherein the plurality of reference unlocking success rates correspond to the plurality of areas one to one;
and determining an area corresponding to the largest reference unlocking success rate in the plurality of reference unlocking success rates as the target area.
15. The apparatus of claim 14, further comprising: a building unit is established, wherein,
the acquisition unit is further configured to acquire a plurality of historical fingerprint unlocking records, each historical fingerprint unlocking record includes a historical matching result, a historical temperature parameter and a historical fingerprint area, where a fingerprint matching is successful or a fingerprint matching is failed, and the historical fingerprint area is one of the plurality of areas;
the determining unit is further configured to determine, according to the historical fingerprint unlocking records, multiple historical unlocking success rates of each of the multiple areas under multiple historical temperature parameters, where each of the historical temperature parameters corresponds to one historical unlocking success rate;
the establishing unit is used for establishing a mapping relation between the temperature parameter and the unlocking success rate according to a plurality of historical temperature parameters and a plurality of historical unlocking success rates corresponding to each of the plurality of areas to obtain a plurality of mapping relations, and each mapping relation corresponds to one area.
16. The apparatus according to claim 13, wherein the target temperature parameters include a current ambient temperature and a current display screen temperature, and in the determining the target area of the plurality of areas according to the target temperature parameters, the determining unit is specifically configured to:
determining a first unlocking success rate of each area in a plurality of areas on the display screen at the current ambient temperature to obtain a plurality of first unlocking success rates;
determining a first area corresponding to a maximum target first unlocking success rate in the plurality of first unlocking success rates;
determining a second unlocking success rate corresponding to each area in the plurality of areas under the current display screen temperature to obtain a plurality of second unlocking success rates;
determining a second area corresponding to a maximum target second unlocking success rate in the plurality of second unlocking success rates;
and if the target first unlocking success rate is greater than or equal to the target second unlocking success rate, taking the first area as the target area, and if the target first unlocking success rate is less than the target second unlocking success rate, taking the second area as the target area.
17. The apparatus according to any of claims 13-16, wherein in said highlighting the target area, the display unit is specifically configured to:
displaying the target area with first display brightness when the display screen is in a screen-off state;
and displaying the target area with second display brightness when the display screen is in a bright screen state, wherein the second display brightness is greater than the first display brightness.
18. The apparatus of any one of claims 13-16, further comprising: a matching unit and an execution unit, wherein,
the acquisition unit is further used for acquiring a first fingerprint image aiming at the target area through the ultrasonic module;
the matching unit is used for matching the first fingerprint image with a preset fingerprint template, and if the first fingerprint image is successfully matched with the preset fingerprint template, the execution unit executes preset unlocking operation.
19. An electronic device comprising a temperature sensor, a display screen, an ultrasound module, a processor, a memory for storing one or more programs and configured for execution by the processor, the programs comprising instructions for performing the steps in the method of any of claims 7-12.
20. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any of the claims 7-12.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106782085A (en) * 2017-02-22 2017-05-31 北京小米移动软件有限公司 Display module and electronic equipment
CN107608576A (en) * 2017-10-10 2018-01-19 深圳天珑无线科技有限公司 A kind of display device
CN108594942A (en) * 2018-04-25 2018-09-28 维沃移动通信有限公司 A kind of personal identification method and mobile terminal
CN108763909A (en) * 2018-06-05 2018-11-06 北京小米移动软件有限公司 Touch-responsive method and device
CN109492472A (en) * 2017-09-12 2019-03-19 南昌欧菲生物识别技术有限公司 Ultrasonic fingerprint identifies mould group and electronic equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100296083A1 (en) * 2008-02-12 2010-11-25 Pranalytica, Inc. Detection and identification of solid matter
US8863268B2 (en) * 2008-10-29 2014-10-14 Dell Products, Lp Security module and method within an information handling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106782085A (en) * 2017-02-22 2017-05-31 北京小米移动软件有限公司 Display module and electronic equipment
CN109492472A (en) * 2017-09-12 2019-03-19 南昌欧菲生物识别技术有限公司 Ultrasonic fingerprint identifies mould group and electronic equipment
CN107608576A (en) * 2017-10-10 2018-01-19 深圳天珑无线科技有限公司 A kind of display device
CN108594942A (en) * 2018-04-25 2018-09-28 维沃移动通信有限公司 A kind of personal identification method and mobile terminal
CN108763909A (en) * 2018-06-05 2018-11-06 北京小米移动软件有限公司 Touch-responsive method and device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
指纹识别技术发展现状;顾陈磊等;《中国生物医学工程学报》;20170831;第36卷(第4期);第471-479页 *

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