WO2021017815A1 - 指纹识别方法及相关产品 - Google Patents

指纹识别方法及相关产品 Download PDF

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Publication number
WO2021017815A1
WO2021017815A1 PCT/CN2020/101851 CN2020101851W WO2021017815A1 WO 2021017815 A1 WO2021017815 A1 WO 2021017815A1 CN 2020101851 W CN2020101851 W CN 2020101851W WO 2021017815 A1 WO2021017815 A1 WO 2021017815A1
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WIPO (PCT)
Prior art keywords
fingerprint
area
image
preset
matching
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Application number
PCT/CN2020/101851
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English (en)
French (fr)
Inventor
吴安平
Original Assignee
Oppo广东移动通信有限公司
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Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2021017815A1 publication Critical patent/WO2021017815A1/zh

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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
    • 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
    • G06V40/1365—Matching; Classification

Definitions

  • This application relates to the technical field of electronic equipment, in particular to a fingerprint identification method and related products.
  • Fingerprint recognition technology has also become the standard technology of electronic equipment. With the development of fingerprint recognition technology, ultrasonic fingerprint recognition technology is more and more favored by suppliers. However, when there are stains on the display, it may affect The efficiency of fingerprint recognition.
  • the embodiments of the present application provide a fingerprint identification method and related products, which can improve the efficiency of fingerprint identification when stains are stuck on the display screen.
  • an embodiment of the present application provides an electronic device that includes a processing circuit and a display screen module connected to the processing circuit, the display screen module includes a display screen and an ultrasonic module, wherein ,
  • the ultrasonic module is used to obtain a first fingerprint image when the first position of the display screen is in a touched state
  • the processing circuit is configured to match the first fingerprint image with a preset fingerprint template to obtain a first matching result; if the first matching result is a matching failure, a prompt message is issued, and the prompt information is used for prompting
  • the target object adjusts the position of the finger touch;
  • the ultrasonic module is also used to obtain a second fingerprint image, the second fingerprint image corresponding to a second position of the display screen;
  • the processing circuit is further configured to match the second fingerprint image with the preset fingerprint template to obtain a second matching result; if the second matching result is a matching failure, according to the first matching result and The second matching result determines whether the fingerprint recognition is successful, and if the fingerprint recognition is successful, a preset unlocking operation is performed.
  • an embodiment of the present application provides a fingerprint identification method applied to an electronic device, the electronic device includes a display screen module, the display screen module includes an ultrasonic module and a display screen; the method includes:
  • the first fingerprint image is matched with the preset fingerprint template to obtain the first matching result; if the first matching result is that the matching fails, a prompt message is issued, and the prompt message is used to prompt the target object to adjust the finger touch position;
  • the second fingerprint image is matched with the preset fingerprint template to obtain a second matching result; if the second matching result is a matching failure, the fingerprint is determined according to the first matching result and the second matching result Whether the recognition is successful, and if the fingerprint recognition is successful, perform a preset unlocking operation.
  • an embodiment of the present application provides a fingerprint identification device, which is applied to an electronic device, the electronic device includes a display screen module, the display screen module includes an ultrasonic module and a display screen; the device includes:
  • An acquiring unit configured to acquire a first fingerprint image through the ultrasonic module when the first position of the display screen is in a touched state
  • the matching unit is configured to match the first fingerprint image with a preset fingerprint template to obtain a first matching result; if the first matching result is a matching failure, a prompt message is issued, and the prompt message is used to prompt the target object Adjust the position of the finger touch;
  • the acquiring unit is further configured to acquire a second fingerprint image through the ultrasonic module, the second fingerprint image corresponding to a second position of the display screen;
  • the matching unit is further configured to match the second fingerprint image with the preset fingerprint template to obtain a second matching result; if the second matching result is a matching failure, according to the first matching result and The second matching result determines whether the fingerprint recognition is successful, and if the fingerprint recognition is successful, a preset unlocking operation is performed.
  • an embodiment of the present application provides an electronic device, including a display screen, an ultrasound module, a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory , And is configured to be executed by the foregoing processor, and the foregoing program includes instructions for executing the steps in the second aspect of the embodiments of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the foregoing computer-readable storage medium stores a computer program for electronic data exchange, wherein the foregoing computer program enables a computer to execute Part or all of the steps described in the two aspects.
  • the embodiments of the present application provide a computer program product, wherein the above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the above-mentioned computer program is operable to cause a computer to execute as implemented in this application.
  • the computer program product may be a software installation package.
  • the fingerprint identification method and related products described in the embodiments of the present application are applied to electronic equipment, which includes a display module, and the display module includes an ultrasonic module and a display screen.
  • the first position of the screen is in the state of being touched, the first fingerprint image is obtained through the ultrasonic module, and the first fingerprint image is matched with the preset fingerprint template to obtain the first matching result; if the first matching result is that the matching failed, send Prompt information to prompt the target object to adjust the position of the finger touch, obtain the second fingerprint image through the ultrasonic module, and match the second fingerprint image with the preset fingerprint template to obtain the second matching result; if the second matching result is a matching failure , Determine whether the fingerprint recognition is successful according to the first matching result and the second matching result.
  • the fingerprint recognition is successful, perform the preset unlocking operation. In this way, when there is a stain on the display screen, the user is prompted to move the finger, and according to the two fingerprint images The matching result determines the final fingerprint recognition result, thereby improving fingerprint recognition efficiency.
  • FIG. 1A is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 1B is a schematic structural diagram of another electronic device provided by an embodiment of the present application.
  • FIG. 1C is a schematic flowchart of a fingerprint identification method provided by an embodiment of the present application.
  • FIG. 1D is a schematic diagram illustrating that the electronic device detects that the finger moves from a first position to a second position according to an embodiment of the present application
  • FIG. 1E is a schematic diagram of a demonstration of dividing a first fingerprint image into multiple first fingerprint regions according to an embodiment of the present application
  • FIG. 1F is a schematic diagram of a demonstration of stitching non-overlapping areas in at least one successfully matched first fingerprint area and at least one successfully matched second fingerprint area according to an embodiment of the present application;
  • FIG. 2 is a schematic flowchart of another fingerprint identification method provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • Fig. 4 is a block diagram of functional units of a fingerprint identification device provided by an embodiment of the present application.
  • the electronic devices involved in the embodiments of this application may include various handheld devices with wireless communication functions, 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, as well as various forms of user equipment (UE), mobile stations (mobile stations, MS), terminal devices (terminal devices), and so on.
  • UE user equipment
  • MS mobile stations
  • terminal devices terminal devices
  • 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, wherein:
  • the electronic device 100 may include a control circuit, and the control circuit may include a storage and processing circuit 110.
  • the storage and processing circuit 110 can be memory, such as hard disk drive memory, non-volatile memory (such as flash memory or other electronic programmable read-only memory used to form a solid-state drive, etc.), volatile memory (such as static or dynamic random access memory). Access to memory, etc.), etc., are not limited in the embodiment of the application.
  • the processing circuit in the storage and processing circuit 110 may be used to control the operation of the electronic device 100.
  • the processing circuit can 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, etc.
  • the storage and processing circuit 110 can be used to run software in the electronic device 100, such as Internet browsing applications, Voice over Internet Protocol (VOIP) telephone call applications, email applications, media playback applications, and operating system functions Wait. These softwares can be used to perform some control operations, for example, camera-based image capture, ambient light measurement based on ambient light sensors, proximity sensor measurement based on proximity sensors, and information based on status indicators such as LED status indicators Display functions, touch event detection based on touch sensors, functions associated with displaying information on multiple (for example, layered) display screens, operations associated with performing wireless communication functions, associated with collecting and generating audio signals Operations, control operations associated with collecting and processing button press event data, and other functions in the electronic device 100 are not limited in the embodiment of the present application.
  • VOIP Voice over Internet Protocol
  • the electronic device 100 may include an input-output circuit 150.
  • the input-output circuit 150 can be used to enable the electronic device 100 to implement data input and output, that is, allow the electronic device 100 to receive data from an external device and also 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 a display screen module, and the display screen module may include a display screen and an ultrasonic module.
  • the ultrasonic module may be integrated under the display screen, or the ultrasonic module may be installed on the side or back of the electronic device. Without limitation, the ultrasonic module can be used to collect fingerprint images.
  • the display screen module may include one or more display screens, such as the display screen 130.
  • the display screen 130 may include one or a combination of a liquid crystal display screen, an organic light emitting diode display screen, an electronic ink display screen, a plasma display screen, and a display screen using other display technologies.
  • the display screen 130 may include a touch sensor array (ie, the display screen 130 may be a touch display screen).
  • the touch sensor can be a capacitive touch sensor formed by an array of transparent touch sensor electrodes (such as indium tin oxide (ITO) electrodes), or can be a touch sensor formed using other touch technologies, such as sonic touch, pressure-sensitive touch, and resistance Touch, optical touch, etc., are not limited in the embodiment of the present application.
  • the sensor 170 may also include an ambient light sensor, a proximity sensor based on light and capacitance, and a touch sensor (for example, a light-based touch sensor and/or a capacitive touch sensor, where the touch sensor may be a part of a touch screen or as a A touch sensor structure can be used independently), acceleration sensor, and other sensors.
  • an ambient light sensor for example, a light-based touch sensor and/or a capacitive touch sensor, where the touch sensor may be a part of a touch screen or as a A touch sensor structure can be used independently
  • acceleration sensor for example, acceleration sensor, and other sensors.
  • the electronic device 100 may also include an audio component 140.
  • the audio component 140 may be used to provide audio input and output functions for the electronic device 100.
  • the audio component 140 in the electronic device 100 may include a speaker, a microphone, a buzzer, a tone generator, and other components for generating and detecting sounds.
  • the communication circuit 120 may be used to provide the electronic device 100 with the ability 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 circuit in the communication circuit 120 may include a radio frequency transceiver circuit, a power amplifier circuit, a low noise amplifier, a switch, a filter, and an antenna.
  • the wireless communication circuit in the communication circuit 120 may include a circuit for supporting Near Field Communication (NFC) by transmitting and receiving near-field coupled electromagnetic signals.
  • the communication circuit 120 may include a near field communication antenna and a near field communication transceiver.
  • the communication circuit 120 may also include a cellular phone transceiver and antenna, a wireless local area network transceiver circuit and antenna, and so on.
  • the electronic device 100 may further include a battery, a power management circuit, 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.
  • the user can input commands through the input-output circuit 150 to control the operation of the electronic device 100, and can use the output data of the input-output circuit 150 to realize receiving status information and other outputs from the electronic device 100.
  • FIG. 1B is a schematic structural diagram of an electronic device.
  • the electronic device 100 may include a cover glass 210, a display A screen (OLED) 220, an adhesion layer (Adhesive) 230, a substrate (TFT Glass) 240, a pixel layer (Pixel) 250, a piezoelectric material layer (Copolymer) 260, an Ag Ink layer 270, and a coagulant layer (DAF) 280.
  • the above-mentioned glass cover plate may also include a film, and the film may be a tempered film, which is used to protect the display screen of the electronic device.
  • the ultrasonic module may include: a TFT Glass layer, a Pixel layer, an Ag Ink layer, and a coagulant layer.
  • the TFT Glass layer is used for metal wiring and material coating;
  • the Pixel layer is used for the Metal electrode embedded on the TFT Glass, which serves as the negative electrode for ultrasonic emission/receiving, Copolymer, also called piezoelectric transducer material, which can be used for material deformation-voltage "Mutual conversion;
  • Ag Ink layer used as the positive electrode of ultrasonic transmission/reception;
  • DAF is a coagulant, used to protect the ultrasonic module;
  • Adhesive layer is the glue that puts the ultrasonic module on the bottom of the OLED screen.
  • the ultrasonic module can include two states, TX state (used to transmit ultrasonic waves) and RX state (used to receive ultrasonic waves).
  • the electrodes Panel negative electrode and Ag Ink positive electrode
  • the Polymer piezoelectric material
  • a high frequency (usually 10MHz level) oscillating signal such as a sine wave
  • the Polymer will generate vibrations in response to the frequency and emit Ultrasound
  • the upwardly transmitted ultrasonic wave passes through the OLED screen and reaches the fingerprint that is in contact with the surface of the display.
  • the acoustic resistance of the air in the fingerprint valley is different from that of the glass on the screen surface. Larger, the acoustic resistance characteristic of the skin tissue of the fingerprint ridge and the acoustic resistance characteristic of the glass surface of the screen are relatively large, so the reflected signal intensity of the fingerprint valley ridge to the ultrasonic wave is different.
  • the ultrasonic module is used to obtain a first fingerprint image when the first position of the display screen is in a touched state
  • the processing circuit is configured to match the first fingerprint image with a preset fingerprint template to obtain a first matching result; if the first matching result is a matching failure, a prompt message is issued, and the prompt information is used for prompting
  • the target object adjusts the position of the finger touch;
  • the ultrasonic module is also used to obtain a second fingerprint image, the second fingerprint image corresponding to a second position of the display screen;
  • the processing circuit is further configured to match the second fingerprint image with the preset fingerprint template to obtain a second matching result; if the second matching result is a matching failure, according to the first matching result and The second matching result determines whether the fingerprint recognition is successful, and if the fingerprint recognition is successful, a preset unlocking operation is performed.
  • the processing circuit is specifically configured to:
  • the first area area corresponding to the at least one first fingerprint area that is successfully matched and the first image area of the first fingerprint image are greater than the first preset threshold, it is determined that the first fingerprint image matches Success, if the first proportion is less than or equal to the first preset threshold, it is determined that the first fingerprint image matching fails.
  • the processing circuit is specifically configured to:
  • the first fingerprint image is divided into multiple first fingerprint regions according to the distribution of the multiple feature matching results corresponding to the multiple first feature points in the first feature point set.
  • the processing circuit is specifically configured to:
  • At least one first fingerprint area corresponding to at least one area matching result that is successfully matched among the plurality of area matching results is determined.
  • the processing circuit is specifically configured to:
  • the processing circuit is specifically configured to:
  • the target proportion is greater than a second preset threshold, it is determined that the fingerprint identification is successful; if the target proportion is less than or equal to the second preset threshold, it is determined that the fingerprint identification fails.
  • the display screen is also used for:
  • the area of the preset area is greater than a preset area threshold, and the first fingerprint image corresponds to the preset area. Assuming the first position of the area, the second fingerprint image corresponds to the second position of the preset area.
  • the electronic device described in the embodiment of the present application includes an ultrasonic module and a display screen.
  • the first fingerprint image is acquired through the ultrasonic module when the first position of the display screen is in a touched state, Match the first fingerprint image with the preset fingerprint template to obtain the first matching result; if the first matching result is that the matching fails, a prompt message is issued to prompt the target object to adjust the position of the finger touch, and the second fingerprint is obtained through the ultrasonic module Image, the second fingerprint image is matched with the preset fingerprint template to obtain the second matching result; if the second matching result is a matching failure, the first matching result and the second matching result are used to determine whether the fingerprint recognition is successful, if the fingerprint recognition is successful , Perform a preset unlocking operation, so that when there is a stain on the display screen, the user is prompted to move the finger, and the final fingerprint recognition result is determined according to the matching result of the two fingerprint images, thereby improving the efficiency of fingerprint recognition.
  • FIG. 1C is a schematic flowchart of a fingerprint identification method provided by an embodiment of the present application. As shown in the figure, it is applied to the electronic device shown in FIG. 1A, and the electronic device includes an ultrasonic module and a display screen.
  • This fingerprint identification method includes:
  • the ultrasonic module can be integrated under the display screen, the ultrasonic module corresponds to the fingerprint collection area, the fingerprint collection area corresponds to all or part of the touch area of the display screen, and the fingerprint collection area can realize the fingerprint collection of one or more fingers.
  • the electronic device can perform fingerprint collection through the ultrasonic module to obtain the first fingerprint image.
  • the area of the preset area is greater than a preset area threshold, and the first fingerprint image corresponds to the preset area. Assuming the first position of the area, the second fingerprint image corresponds to the second position of the preset area.
  • the aforementioned preset area is a part of the touch area on the display screen corresponding to the ultrasonic module.
  • the ultrasonic module can be set corresponding to the preset area, and further, the touch operation of the user's finger touching the display screen can be detected through the display screen.
  • the finger contact is detected in the preset area on the display screen, It is determined that the display screen is being touched.
  • the electronic device may pre-store a preset fingerprint template. If the first matching result is that the matching fails, a prompt message may be issued, and the prompt message may be at least one of the following: text information, audio information, pattern information, identification information, and so on. Therefore, the target object can be prompted to adjust the position of the finger touch, so that the user can move the finger from the first position to the second position.
  • FIG. 1D is an electronic device provided by an embodiment of the application that detects that the finger moves from the first position. Demonstration diagram of moving to the second position.
  • matching the first fingerprint image with a preset fingerprint template to obtain a first matching result may include the following steps 21 to 23:
  • the method for dividing the first fingerprint image into multiple first fingerprint regions can be preset.
  • the first fingerprint image can be divided into multiple equal first fingerprint regions on average, for example,
  • the first fingerprint image is divided into 9 grids, and each grid corresponds to a first fingerprint area, and all the first fingerprint areas have the same area and shape.
  • a plurality of first fingerprint areas can be divided according to the distribution of pixels in the first fingerprint image. For example, generally speaking, the pixels of the fingerprint area corresponding to the area near the middle of the finger in the first fingerprint image are relatively clear and close to the finger. The pixel points of the fingerprint area corresponding to the edge area are relatively fuzzy. Therefore, the first fingerprint image can be divided into a plurality of first fingerprint areas according to the difference between the middle and the edge of the first fingerprint image. The first fingerprint area corresponds to the middle area of the finger, and part of the first fingerprint area corresponds to the edge area of the finger.
  • dividing the first fingerprint image into multiple first fingerprint regions may include the following steps:
  • A1. Perform feature extraction on the first fingerprint image to obtain a first feature point set
  • A2 Divide the first fingerprint image into multiple first fingerprint regions according to the distribution of multiple feature matching results corresponding to multiple first feature points in the first feature point set.
  • the first fingerprint image in order to divide the first fingerprint image into multiple first fingerprint regions more reasonably and accurately, the first fingerprint image may be feature extracted to obtain a first feature point set.
  • the first feature point set includes multiple
  • matching can be performed on multiple first feature points to obtain matching results of multiple first feature points, specifically, for multiple first features
  • Any first feature point in the points any first feature point can be matched with a feature sample point in the preset fingerprint template, if there is a difference between the preset fingerprint template and the any first feature point
  • it can be determined that the feature matching result of any first feature point is a successful match. In this way, multiple feature matching results corresponding to multiple first feature points can be obtained.
  • the first fingerprint image can be divided into multiple first fingerprint regions according to the distribution of multiple feature matching results.
  • FIG. 1E is a method for dividing the first fingerprint image into multiple regions according to an embodiment of the application.
  • Demonstration diagram of a first fingerprint area in which part of the first fingerprint area is a concentrated area where the feature matching result is mainly a plurality of first feature points that are successfully matched, and another part of the first fingerprint area is a concentrated area where the feature matching is gathered
  • the result is mainly a concentrated area of multiple first features that failed to match. In this way, it can be more intuitive to see which areas in the first fingerprint image match successfully and which areas fail to match.
  • the region matching result of each first fingerprint region in the plurality of first fingerprint regions can be determined, and a plurality of region matching results can be obtained. Furthermore, the region matching result can be selected as the matching successful At least one first fingerprint area.
  • determining at least one first fingerprint area that is successfully matched among the plurality of first fingerprint areas may include the following steps:
  • each first fingerprint area multiple first feature points may be included, and each first feature point corresponds to a feature matching result, and the multiple feature matching results of the multiple first feature points may include successfully matched
  • the feature matching result and the feature matching result of the matching failure therefore, the proportion of the feature matching results that are successfully matched and the proportion of the feature matching results that have failed to match among the multiple feature matching results corresponding to each first fingerprint region can be determined, and obtain Feature matching results with the largest proportion.
  • the multiple feature matching results of the multiple first feature points of the first fingerprint area can be counted. If the proportion of the feature matching results that are successfully matched is the largest, then The area matching result of the first fingerprint area is a successful match. If the proportion of the feature matching results that failed to match is the largest, then the area matching result of the first fingerprint area is a matching failure. In this way, multiple first fingerprint areas corresponding to Multiple region matching results are obtained, and at least one first fingerprint region corresponding to at least one region matching result that is successfully matched is obtained.
  • first area area corresponding to the at least one first fingerprint area that is successfully matched and the first image area of the first fingerprint image are greater than the first preset threshold, determine the first fingerprint If the image matching is successful, if the first proportion is less than or equal to the first preset threshold, it is determined that the first fingerprint image matching fails.
  • the area of the first area is the sum of the areas of at least one first fingerprint area that is successfully matched.
  • the area of the first area corresponding to the at least one first fingerprint area that is successfully matched may be determined. Specifically, At least one area corresponding to the at least one first fingerprint area is added to obtain the first area area. Then, the first area of the first area and the first proportion of the first image area are determined, and if the first proportion is greater than the first predetermined area, By setting a threshold, it can be determined that the first fingerprint image is matched successfully, and then a preset unlocking operation can be performed; otherwise, it is determined that the first fingerprint image has failed to match, and then a prompt message is issued.
  • the user may be prompted to move the finger to the second position, and then the second fingerprint image at the second position where the finger touches the second position is obtained.
  • the second fingerprint image is matched with the preset fingerprint template to obtain the specific implementation details of the second matching result.
  • the specific implementation details are not limited here.
  • the unlocking operation can be performed directly, and if the second matching result is also a matching failure, it can be determined whether the fingerprint recognition is successful according to the first matching result and the second matching result
  • the first matching result may also include at least one first fingerprint region that is successfully matched in the first fingerprint image
  • the second matching result may also include at least one second fingerprint region that is successfully matched in the second fingerprint image
  • matching the second fingerprint image with the preset fingerprint template to obtain a second matching result may include the following steps:
  • Determining whether the fingerprint recognition is successful according to the first matching result and the second matching result may include the following steps:
  • the target proportion is greater than a second preset threshold, it is determined that the fingerprint identification is successful; if the target proportion is less than or equal to the second preset threshold, it is determined that the fingerprint identification fails.
  • the method of dividing the second fingerprint image into multiple second fingerprint regions is the same as the method of dividing the first fingerprint image into multiple first fingerprint regions. In this way, it can be ensured that the first matching result and the second The matching result determines the accuracy of the result of whether the fingerprint recognition is successful.
  • FIG. 1F is a method provided by an embodiment of this application for matching successfully at least one first fingerprint area.
  • the fingerprint feature points in the fingerprint area image are all fingerprint feature points that have been successfully matched.
  • the target image area of the fingerprint area image and the target proportion of the preset image area of the preset fingerprint template can be determined. If the target proportion is greater than the second preset threshold, it is determined that the fingerprint recognition is successful; if the target proportion is less than or equal to The second preset threshold determines that the fingerprint recognition fails.
  • the first preset threshold is set to 85%
  • the first ratio of the area of an area to the area of the first image of the first fingerprint image is 70%.
  • the second proportion of the image area is 75%, and then the result of fingerprint recognition failure is obtained based on the matching result of the first fingerprint image or the second fingerprint image alone, and further, the at least one first fingerprint area that is successfully matched can be matched with the successful matching result.
  • At least one non-overlapping area in the second fingerprint area is spliced to obtain a fingerprint area image.
  • the second preset threshold is set to 90%. If it is determined that the target image area of the fingerprint area image is consistent with the preset fingerprint template Assuming that the target proportion of the image area is 91%, it indicates that the target proportion is greater than the second preset threshold, and furthermore, it can be determined that the fingerprint recognition is successful. In this way, the final fingerprint recognition result can be determined according to the first matching result and the second matching result, It is not necessary to collect a fingerprint image again to confirm that the fingerprint identification is successful, thereby reducing the number of times of collecting fingerprint images and improving the efficiency of fingerprint identification.
  • the fingerprint identification method described in the embodiment of the present application is applied to an electronic device.
  • the electronic device includes a display screen module.
  • the display screen module includes an ultrasonic module and a display screen.
  • the first fingerprint image is obtained through the ultrasonic module, and the first fingerprint image is matched with the preset fingerprint template to obtain the first matching result; if the first matching result is that the matching failed, a prompt message is issued, Prompt the target object to adjust the position of the finger touch, obtain the second fingerprint image through the ultrasonic module, and match the second fingerprint image with the preset fingerprint template to obtain the second matching result; if the second matching result is that the matching failed, according to the first
  • the first matching result and the second matching result determine whether the fingerprint recognition is successful.
  • the preset unlocking operation is performed. In this way, when there is a stain on the display screen, the user is prompted to move the finger, and according to the matching result of the two fingerprint images Determine the final fingerprint recognition result, thereby improving fingerprint recognition efficiency.
  • FIG. 2 is a schematic flowchart of a fingerprint identification method provided by an embodiment of the present application, as shown in the figure, applied to the electronic device shown in FIG. 1A ,
  • the electronic device includes a display screen module, the display screen module includes an ultrasonic module and a display screen; the fingerprint identification method includes:
  • first area area corresponding to the at least one first fingerprint area that is successfully matched and the first image area of the first fingerprint image are greater than a first preset threshold, determine the first fingerprint The image is matched successfully, and the preset unlock operation is performed.
  • the first proportion is less than or equal to the first preset threshold, it is determined that the first fingerprint image fails to match, and a prompt message is issued, and the prompt message is used to prompt the target object to adjust the position of the finger touch.
  • the second matching result is a matching failure, splicing non-overlapping regions in the at least one successfully matched first fingerprint region and the at least one successfully matched second fingerprint region to obtain a fingerprint region image.
  • the target proportion is greater than a second preset threshold, determine that the fingerprint recognition is successful, and perform a preset unlocking operation; if the target proportion is less than or equal to the second preset threshold, determine the fingerprint Recognition failed.
  • the fingerprint identification method described in the embodiment of this application is applied to an electronic device, the electronic device includes a display screen module, the display screen module includes an ultrasonic module and a display screen, the first fingerprint image Divide into multiple first fingerprint areas, and then determine the matching result of the first fingerprint image according to the area matching results of the multiple first fingerprint areas. In this way, the accuracy of fingerprint recognition can be improved. In addition, there may be stains on the display screen. When the matching result between the first fingerprint image and the second fingerprint image fails, the final fingerprint identification result is determined according to the at least one first fingerprint area that is successfully matched and the at least one second fingerprint area that is successfully matched, so as to improve fingerprint identification efficiency.
  • FIG. 3 is a schematic structural diagram of an electronic device 300 provided by an embodiment of the present application.
  • the electronic device 300 includes a processor 310, a memory 320, and a communication interface 330. And one or more programs 321.
  • the electronic device includes an ultrasound module 340 and a display screen 350.
  • the one or more programs are stored in the memory and are configured to be executed by the processor.
  • the aforementioned program 321 includes instructions for performing the following steps:
  • the first fingerprint image is matched with the preset fingerprint template to obtain the first matching result; if the first matching result is that the matching fails, a prompt message is issued, and the prompt message is used to prompt the target object to adjust the finger touch position;
  • the second fingerprint image is matched with the preset fingerprint template to obtain a second matching result; if the second matching result is a matching failure, the fingerprint is determined according to the first matching result and the second matching result Whether the recognition is successful, and if the fingerprint recognition is successful, perform a preset unlocking operation.
  • the electronic device described in the embodiment of the present application includes an ultrasonic module and a display screen.
  • the first fingerprint image is acquired through the ultrasonic module when the first position of the display screen is in a touched state, Match the first fingerprint image with the preset fingerprint template to obtain the first matching result; if the first matching result is that the matching fails, a prompt message is issued to prompt the target object to adjust the position of the finger touch, and the second fingerprint is obtained through the ultrasonic module Image, the second fingerprint image is matched with the preset fingerprint template to obtain the second matching result; if the second matching result is a matching failure, the first matching result and the second matching result are used to determine whether the fingerprint recognition is successful, if the fingerprint recognition is successful , Perform a preset unlocking operation, so that when there is a stain on the display screen, the user is prompted to move the finger, and the final fingerprint recognition result is determined according to the matching result of the two fingerprint images, thereby improving the efficiency of fingerprint recognition.
  • the program 321 includes instructions for executing the following steps:
  • the first area area corresponding to the at least one first fingerprint area that is successfully matched and the first image area of the first fingerprint image are greater than the first preset threshold, it is determined that the first fingerprint image matches Success, if the first proportion is less than or equal to the first preset threshold, it is determined that the first fingerprint image matching fails.
  • the program 321 includes instructions for executing the following steps:
  • the first fingerprint image is divided into multiple first fingerprint regions according to the distribution of the multiple feature matching results corresponding to the multiple first feature points in the first feature point set.
  • the program 321 includes instructions for executing the following steps:
  • At least one first fingerprint area corresponding to at least one area matching result that is successfully matched among the plurality of area matching results is determined.
  • the program 321 further includes instructions for executing the following steps:
  • the above program further includes instructions for executing the following steps:
  • the target proportion is greater than a second preset threshold, it is determined that the fingerprint identification is successful; if the target proportion is less than or equal to the second preset threshold, it is determined that the fingerprint identification fails.
  • the above program also includes instructions for performing the following steps:
  • the area of the preset area is greater than a preset area threshold, and the first fingerprint image corresponds to the preset area. Assuming the first position of the area, the second fingerprint image corresponds to the second position of the preset area.
  • the electronic device includes hardware structures and/or software modules corresponding to each function.
  • this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the electronic device into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of this application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the fingerprint identification device 400 is applied to an electronic device, the electronic device includes a display screen module, the display screen module includes an ultrasonic module and a display screen; the device 400 includes: an acquisition unit 401, a matching unit 402, and an execution Unit 403, in which,
  • the acquiring unit 401 is configured to acquire a first fingerprint image through the ultrasonic module when the first position of the display screen is in a touched state;
  • the matching unit 402 is configured to match the first fingerprint image with a preset fingerprint template to obtain a first matching result; if the first matching result is a matching failure, a prompt message is issued, and the prompt information is used to prompt the target
  • the object adjusts the position of the finger touch;
  • the acquiring unit 401 is further configured to acquire a second fingerprint image through the ultrasonic module, the second fingerprint image corresponding to a second position of the display screen;
  • the matching unit 402 is further configured to match the second fingerprint image with the preset fingerprint template to obtain a second matching result; if the second matching result is a matching failure, according to the first matching result And the second matching result to determine whether the fingerprint recognition is successful;
  • the execution unit 403 is configured to execute a preset unlocking operation when the fingerprint recognition is successful.
  • the fingerprint identification device described in the embodiment of the present application is applied to an electronic device that includes an ultrasonic module and a display screen.
  • the ultrasonic module Obtain the first fingerprint image, match the first fingerprint image with the preset fingerprint template, and obtain the first matching result; if the first matching result is that the matching fails, a prompt message is issued to prompt the target object to adjust the position of the finger
  • the module obtains the second fingerprint image, matches the second fingerprint image with the preset fingerprint template, and obtains the second matching result; if the second matching result is a matching failure, it determines whether the fingerprint recognition is based on the first matching result and the second matching result Successfully, if the fingerprint recognition is successful, perform the preset unlocking operation. In this way, when there are stains on the display, the user is prompted to move the finger, and the final fingerprint recognition result is determined according to the matching results of the two fingerprint images, thereby improving fingerprint recognition effectiveness.
  • the matching unit 402 is specifically configured to:
  • the first area area corresponding to the at least one first fingerprint area that is successfully matched and the first image area of the first fingerprint image are greater than the first preset threshold, it is determined that the first fingerprint image matches Success, if the first proportion is less than or equal to the first preset threshold, it is determined that the first fingerprint image matching fails.
  • the matching unit 402 is specifically configured to:
  • the first fingerprint image is divided into multiple first fingerprint regions according to the distribution of the multiple feature matching results corresponding to the multiple first feature points in the first feature point set.
  • the matching unit 402 is specifically configured to:
  • At least one first fingerprint area corresponding to at least one area matching result that is successfully matched among the plurality of area matching results is determined.
  • the matching unit 402 is specifically configured to:
  • the matching unit 402 is specifically configured to:
  • the target proportion is greater than a second preset threshold, it is determined that the fingerprint identification is successful; if the target proportion is less than or equal to the second preset threshold, it is determined that the fingerprint identification fails.
  • execution unit 403 is further configured to:
  • the area of the preset area is greater than a preset area threshold, and the first fingerprint image corresponds to the preset area. Assuming the first position of the area, the second fingerprint image corresponds to the second position of the preset area.
  • each program module of the fingerprint identification device of this embodiment can be implemented according to the method in the above method embodiment, and the specific implementation process can be referred to the relevant description of the above method embodiment, which will not be repeated here.
  • An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any method as recorded in the above method embodiment ,
  • the aforementioned computer includes electronic equipment.
  • the embodiments of the present application also provide a computer program product.
  • the above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program.
  • the above-mentioned computer program is operable to cause a computer to execute any of the methods described in the above-mentioned method embodiments. Part or all of the steps of the method.
  • the computer program product may be a software installation package, and the above-mentioned computer includes electronic equipment.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the above-mentioned units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable memory.
  • the technical solution of the present application essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, A number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the foregoing methods of the various embodiments of the present application.
  • the aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other various media that can store program codes.
  • the program can be stored in a computer-readable memory, and the memory can include: flash disk , Read-only memory (English: Read-Only Memory, abbreviated as: ROM), random access device (English: Random Access Memory, abbreviated as: RAM), magnetic disk or optical disc, etc.

Abstract

本申请实施例公开了一种指纹识别方法及相关产品，应用于电子设备，所述电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏；该方法包括：通过在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像，将第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若第一匹配结果为匹配失败，发出提示信息，提示目标对象调整手指触控的位置，通过超声波模组获取第二指纹图像，将第二指纹图像与预设指纹模板进行匹配，得到第二匹配结果；若第二匹配结果为匹配失败，根据第一匹配结果和第二匹配结果确定指纹识别是否成功，若指纹识别成功，执行预设解锁操作，如此，提高指纹识别效率。

Description

指纹识别方法及相关产品 技术领域
本申请涉及电子设备技术领域，具体涉及一种指纹识别方法及相关产品。
背景技术
随着电子设备(如手机、平板电脑等等)的大量普及应用，电子设备能够支持的应用越来越多，功能越来越强大，电子设备向着多样化、个性化的方向发展，成为用户生活中不可缺少的电子用品。
指纹识别技术也成为电子设备的标配技术，随着指纹识别技术的发展，目前来看，超声波指纹识别技术越来越受到供应商的青睐，但是，当显示屏上粘有污渍时，可能影响指纹识别的效率。
发明内容
本申请实施例提供了一种指纹识别方法及相关产品，可在显示屏上粘有污渍时，提高指纹识别的效率。
第一方面，本申请实施例提供一种电子设备，所述电子设备包括处理电路，以及与所述处理电路连接的显示屏模组，所述显示屏模组包括显示屏和超声波模组，其中，
所述超声波模组，用于在所述显示屏的第一位置处于被触摸状态时，获取第一指纹图像；
所述处理电路，用于将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
所述超声波模组，还用于获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
所述处理电路，还用于将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
第二方面，本申请实施例提供一种指纹识别方法，应用于电子设备，所述电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏；所述方法包括：
在所述显示屏的第一位置处于被触摸状态时，通过所述超声波模组获取第一指纹图像；
将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
第三方面，本申请实施例提供了一种指纹识别装置，应用于电子设备，所述电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏；所述装置包括：
获取单元，用于在所述显示屏的第一位置处于被触摸状态时，通过所述超声波模组获取第一指纹图像；
匹配单元，用于将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
所述获取单元，还用于通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
所述匹配单元，还用于将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
第四方面，本申请实施例提供一种电子设备，包括显示屏、超声波模组、处理器、存储器、通信接口以及一个或多个程序，其中，上述一个或多个程序被存储在上述存储器中，并且被配置由上述处理器执行，上述程序包括用于执行本申请实施例第二方面中的步骤的指令。
第五方面，本申请实施例提供了一种计算机可读存储介质，其中，上述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，上述计算机程序使得计算机执行如本申请实施例第二方面中所描述的部分或全部步骤。
第六方面，本申请实施例提供了一种计算机程序产品，其中，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如本申请实施例第二方面中所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
实施本申请实施例，具备如下有益效果：
可以看出，本申请实施例中所描述的指纹识别方法及相关产品，应用于电子设备，该电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏，通过在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像，将第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若第一匹配结果为匹配失败，发出提示信息，提示目标对象调整手指触控的位置，通过超声波模组获取第二指纹图像，将第二指纹图像与预设指纹模板进行匹配，得到第二匹配结果；若第二匹配结果为匹配失败，根据第一匹配结果和第二匹配结果确定指纹识别是否成功，若指纹识别成功，执行预设解锁操作，如此，能够在显示屏上存在污渍时，提示用户移动手指，并根据两个指纹图像的匹配结果确定最终的指纹识别结果，从而，提高指纹识别效率。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1A是本申请实施例提供的一种电子设备的结构示意图；
图1B是本申请实施例提供的另一种电子设备的结构示意图；
图1C是本申请实施例提供的一种指纹识别方法的流程示意图；
图1D是本申请实施例提供的电子设备检测到手指从第一位置移动到第二位置的演示示意图；
图1E是本申请实施例提供的一种将第一指纹图像划分为多个第一指纹区域的演示示意图；
图1F是本申请实施例提供的一种将匹配成功的至少一个第一指纹区域和匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接的演示示意图；
图2是本申请实施例提供的另一种指纹识别方法的流程示意图；
图3是本申请实施例提供的一种电子设备的结构示意图；
图4是本申请实施例提供的一种指纹识别装置的功能单元组成框图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
本申请实施例所涉及到的电子设备可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备(智能手表、智能手环、无线耳机、增强现实/虚拟现实设备、智能眼镜)、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备(user equipment，UE)，移动台(mobile station，MS)，终端设备(terminal device)等等。为方便描述，上面提到的设备统称为电子设备。
下面对本申请实施例进行详细介绍。
请参阅图1A，图1A是本申请实施例公开的一种电子设备的结构示意图，电子设备100包括存储和处理电路110，以及与所述存储和处理电路110连接的传感器170，其中：
电子设备100可以包括控制电路，该控制电路可以包括存储和处理电路110。该存储和处理电路110可以存储器，例如硬盘驱动存储器，非易失性存储器(例如闪存或用于形成固态驱动器的其它电子可编程只读存储器等)，易失性存储器(例如静态或动态随机存取存储器等)等，本申请实施例不作限制。存储和处理电路110中的处理电路可以用于控制电子设备100的运转。该处理电路可以基于一个或多个微处理器，微控制器，数字信号处理器，基带处理器，功率管理单元，音频编解码器芯片，专用集成电路，显示驱动器集成电路等来实现。
存储和处理电路110可用于运行电子设备100中的软件，例如互联网浏览应用程序，互联网协议语音(Voice over Internet Protocol,VOIP)电话呼叫应用程序，电子邮件应用程序，媒体播放应用程序，操作系统功能等。这些软件可以用于执行一些控制操作，例如，基于照相机的图像采集，基于环境光传感器的环境光测量，基于接近传感器的接近传感器测量，基于诸如发光二极管的状态指示灯等状态指示器实现的信息显示功能，基于触摸传感器的触摸事件检测，与在多个(例如分层的)显示屏上显示信息相关联的功能，与执行无线通信功能相关联的操作，与收集和产生音频信号相关联的操作，与收集和处理按钮按压事件数据相关联的控制操作，以及电子设备100中的其它功能等，本申请实施例不作限制。
电子设备100可以包括输入-输出电路150。输入-输出电路150可用于使电子设备100 实现数据的输入和输出，即允许电子设备100从外部设备接收数据和也允许电子设备100将数据从电子设备100输出至外部设备。输入-输出电路150可以进一步包括传感器170。
传感器170可以包括显示屏模组，该显示屏模组可包括显示屏和超声波模组，超声波模组可以集成于显示屏下方，或者，超声波模组可以设置于电子设备的侧面或者背面，在此不作限定，该超声波模组可以用于采集指纹图像。
显示屏模组可以包括一个或多个显示屏，例如显示屏130。显示屏130可以包括液晶显示屏，有机发光二极管显示屏，电子墨水显示屏，等离子显示屏，使用其它显示技术的显示屏中一种或者几种的组合。显示屏130可以包括触摸传感器阵列(即，显示屏130可以是触控显示屏)。触摸传感器可以是由透明的触摸传感器电极(例如氧化铟锡(ITO)电极)阵列形成的电容式触摸传感器，或者可以是使用其它触摸技术形成的触摸传感器，例如音波触控，压敏触摸，电阻触摸，光学触摸等，本申请实施例不作限制。
传感器170还可以包括环境光传感器，基于光和电容的接近传感器，触摸传感器(例如，基于光触摸传感器和/或电容式触摸传感器，其中，触摸传感器可以是触控显示屏的一部分，也可以作为一个触摸传感器结构独立使用)，加速度传感器，和其它传感器等。
电子设备100还可以包括音频组件140。音频组件140可以用于为电子设备100提供音频输入和输出功能。电子设备100中的音频组件140可以包括扬声器，麦克风，蜂鸣器，音调发生器以及其它用于产生和检测声音的组件。
通信电路120可以用于为电子设备100提供与外部设备通信的能力。通信电路120可以包括模拟和数字输入-输出接口电路，和基于射频信号和/或光信号的无线通信电路。通信电路120中的无线通信电路可以包括射频收发器电路、功率放大器电路、低噪声放大器、开关、滤波器和天线。举例来说，通信电路120中的无线通信电路可以包括用于通过发射和接收近场耦合电磁信号来支持近场通信(Near Field Communication，NFC)的电路。例如，通信电路120可以包括近场通信天线和近场通信收发器。通信电路120还可以包括蜂窝电话收发器和天线，无线局域网收发器电路和天线等。
电子设备100还可以进一步包括电池，电力管理电路和其它输入-输出单元160。输入-输出单元160可以包括按钮，操纵杆，点击轮，滚动轮，触摸板，小键盘，键盘，照相机，发光二极管和其它状态指示器等。
用户可以通过输入-输出电路150输入命令来控制电子设备100的操作，并且可以使用输入-输出电路150的输出数据以实现接收来自电子设备100的状态信息和其它输出。
在一个可能的示例中，以超声波模组位于显示屏下方为例，如图1B所示，图1B为电子设备的一种结构示意图，电子设备100可以包括玻璃盖板(Cover glass)210、显示屏(OLED)220、附着层(Adhesive)230、基板(TFT Glass)240、像素层(Pixel)250、压电材料层(Copolymer)260、Ag Ink层270、凝固胶层(DAF)280。当然，上述玻璃盖板上方还可以包括膜层(film)，膜层可以为钢化膜，其用于保护电子设备的显示屏。
进一步地，超声波模组可以包括：TFT Glass层、Pixel层、Ag Ink层和凝固胶层。TFT Glass层用于metal布线、材料涂布；Pixel层，用于嵌在TFT Glass上的Metal电极，作为超声波发射/接收的负极、Copolymer，也叫压电换能材料，可以“材料形变-电压”相互转换；Ag Ink层，用作超声波发射/接收的正极；DAF是凝固胶，用于保护超声波模组；Adhesive层是将超声波模组站在OLED屏底部的粘胶。
具体实现中，超声波模组可以包括2个状态，TX状态(用于发射超声波)和RX状态(用于接收超声波)。
TX状态下，通过在Copolymer(压电材料)两端的电极(Pixel负电极和Ag Ink正电极)提供高频率(通常为10MHz级别)振荡信号，如正弦波，Copolymer会产生响应频率的振动并发出超声波，向上传输的超声波在透过OLED屏后，到达与显示屏表面接触的指 纹，由于指纹谷脊与显示屏贴合时，由于指纹谷中的空气的声阻特性与屏表面玻璃声阻特性相差较大，指纹脊的皮肤组织的声阻特性与屏表面玻璃声阻特性差异相对较大，因此，指纹谷脊对超声波的反射信号强度不同。
RX状态下，当反射回来的超声波再次穿过显示屏到达超声波模组(Pixel-Copolymer-Ag Ink)后，引起Copolymer振动产生电信号，不同位置的指纹谷脊对应的pixel区域的Copolymer振动强度大小不同，因此不同位置Pixel接收到的电势差也不相同(Ag Ink为等电势)，将电势差转换为二维的图像信号，由此得到超声波指纹图像。
基于上述图1A以及图1B所描述的电子设备，可以用于实现如下功能：
所述超声波模组，用于在所述显示屏的第一位置处于被触摸状态时，获取第一指纹图像；
所述处理电路，用于将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
所述超声波模组，还用于获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
所述处理电路，还用于将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
在所述将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果方面，所述处理电路具体用于：
将所述第一指纹图像划分为多个第一指纹区域；
确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域；
若所述匹配成功的至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败。
在一个可能的示例中，所述将所述第一指纹图像划分为多个第一指纹区域，所述处理电路具体用于：
将所述第一指纹图像进行特征提取，得到第一特征点点集；
根据所述第一特征点集中多个第一特征点的对应的多个特征匹配结果的分布情况将所述第一指纹图像划分为多个第一指纹区域。
在一个可能的示例中，在所述确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域方面，所述处理电路具体用于：
根据所述多个第一指纹区域中每一指纹区域包括的多个第一特征点的多个特征匹配结果中占比最大的特征匹配结果作为对应指纹区域的区域匹配结果，得到多个区域匹配结果；
确定所述多个区域匹配结果中匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
在一个可能的示例中，在所述将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果方面，所述处理电路具体用于：
将所述第二指纹图像划分为多个第二指纹区域；
确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域；
根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果；
在所述根据所述第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功方面，所述处理电路具体用于：
将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像；
确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比；
若所述目标占比大于第二预设阈值，确定所述指纹识别成功；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
在一个可能的示例中，所述显示屏还用于：
在检测到所述显示屏上的预设区域存在手指接触时，确定所述显示屏处于被触摸状态，所述预设区域的面积大于预设面积阈值，所述第一指纹图像对应所述预设区域的所述第一位置，所述第二指纹图像对应所述预设区域的所述第二位置。
可以看出，本申请实施例中所描述的电子设备，该电子设备包括超声波模组和显示屏，通过在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像，将第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若第一匹配结果为匹配失败，发出提示信息，提示目标对象调整手指触控的位置，通过超声波模组获取第二指纹图像，将第二指纹图像与预设指纹模板进行匹配，得到第二匹配结果；若第二匹配结果为匹配失败，根据第一匹配结果和第二匹配结果确定指纹识别是否成功，若指纹识别成功，执行预设解锁操作，如此，能够在显示屏上存在污渍时，提示用户移动手指，并根据两个指纹图像的匹配结果确定最终的指纹识别结果，从而，提高指纹识别效率。
请参阅图1C，图1C是本申请实施例提供的一种指纹识别方法的流程示意图，如图所示，应用于如图1A所示的电子设备，所述电子设备包括超声波模组和显示屏，本指纹识别方法包括：
101、在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像。
其中，超声波模组可以集成于显示屏下方，超声波模组对应指纹采集区域，指纹采集区域对应全部或者部分显示屏的触控区域，指纹采集区域能够实现对一个或者多个手指进行指纹采集。在手指触控到或者接近指纹采集区域对应的显示屏的触控区域，则电子设备可以通过超声波模组进行指纹采集，得到第一指纹图像。
可选地，本申请实施例中，还可包括以下步骤：
在检测到所述显示屏上的预设区域存在手指接触时，确定所述显示屏处于被触摸状态，所述预设区域的面积大于预设面积阈值，所述第一指纹图像对应所述预设区域的所述第一位置，所述第二指纹图像对应所述预设区域的所述第二位置。
其中，上述预设区域为显示屏上与超声波模组对应的部分触控区域。
本申请实施例中，可在预设区域对应设置超声波模组，进而，可通过显示屏检测用户的手指接触显示屏的触控操作，在检测到显示屏上的预设区域存在手指接触时，则确定显示屏处于被触摸状态。
102、将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置。
其中，电子设备中可以预先存储预设指纹模板。若第一匹配结果为匹配失败，可发出提示信息，提示信息可以为以下至少一种：文字信息、音频信息、图案信息、标识信息等等。从而，可提示目标对象调整手指触控的位置，使用户将手指从第一位置移动到第二位置，请参阅图1D，图1D为本申请实施例提供的电子设备检测到手指从第一位置移动到第二位置的演示示意图。
可选地，上述步骤102中，将所述第一指纹图像与预设指纹模板进行匹配，得到第一 匹配结果，可包括以下步骤21-步骤23：
21、将所述第一指纹图像划分为多个第一指纹区域；
其中，将第一指纹图像划分为多个第一指纹区域的方式可以预设设定，可选地，可将平均地第一指纹图像划分为多个相等的多个第一指纹区域，例如，将第一指纹图像划分为9格，每一格对应一个第一指纹区域，所有第一指纹区域的面积、形状相同。或者，还可根据第一指纹图像中像素点的分布划分多个第一指纹区域，例如，一般来说，第一指纹图像中靠近手指中间的区域对应的指纹区域的像素点比较清晰，靠近手指边缘的区域对应的指纹区域的像素点比较模糊，因此，可根据第一指纹图像中间和边缘的区别将第一指纹图像划分为多个第一指纹区域，其中，多个第一指纹区域中部分第一指纹区域对应手指中间的区域，部分第一指纹区域对应手指边缘的区域。
可选地，上述步骤21中，将所述第一指纹图像划分为多个第一指纹区域，可包括以下步骤：
A1、将所述第一指纹图像进行特征提取，得到第一特征点点集；
A2、根据所述第一特征点集中多个第一特征点的对应的多个特征匹配结果的分布情况将所述第一指纹图像划分为多个第一指纹区域。
本申请实施例中，为了更加合理、准确地将第一指纹图像划分为多个第一指纹区域，可将第一指纹图像进行特征提取，得到第一特征点点集，第一特征点点集中包括多个第一特征点，在对第一指纹图像进行指纹识别的过程中，可针对多个第一特征点进行匹配，得到多个第一特征点的匹配结果，具体地，针对多个第一特征点中任一第一特征点，可将任一第一特征点与预设指纹模板中的特征样本点进行匹配，该若该预设指纹模板中存在与该任一第一特征点之间的匹配值超过预设匹配值的样本特征点，可确定该任意第一特征点的特征匹配结果为匹配成功，如此，可得到多个第一特征点对应的多个特征匹配结果。进而，可根据多个特征匹配结果的分布情况将第一指纹图像划分为多个第一指纹区域，请参阅图1E，图1E为本申请实施例提供的一种将第一指纹图像划分为多个第一指纹区域的演示示意图，其中，部分的第一指纹区域为聚集了特征匹配结果主要为匹配成功的多个第一特征点的集中区域，另一部分的第一指纹区域是聚集了特征匹配结果主要为匹配失败的多个第一特征的集中区域，如此，可以较为直观地看出第一指纹图像中哪些区域匹配成功，哪些区域匹配失败。
22、确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域；
其中，在得到多个第一指纹区域后，可确定多个第一指纹区域中每一第一指纹区域的区域匹配结果，得到多个区域匹配结果，进而，可选取区域匹配结果为匹配成功的至少一个第一指纹区域。
可选地，上述步骤22中，确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域，可包括以下步骤：
B1、根据所述多个第一指纹区域中每一第一指纹区域包括的多个第一特征点的多个特征匹配结果中占比最大的特征匹配结果作为对应指纹区域的区域匹配结果，得到多个区域匹配结果；
B2、确定所述多个区域匹配结果中匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
其中，针对每一第一指纹区域中，可包括多个第一特征点，每一第一特征点对应一个特征匹配结果，多个第一特征点的多个特征匹配结果中可包括匹配成功的特征匹配结果和匹配失败的特征匹配结果，因此，可确定每一第一指纹区域对应的多个特征匹配结果中匹配成功的特征匹配结果的占比和匹配失败的特征匹配结果的占比，得到占比最大的特征匹配结果。
其中，针对多个第一指纹区域中每一第一指纹区域，可以统计该第一指纹区域的多个第一特征点的多个特征匹配结果，若匹配成功的特征匹配结果占比最大，则该第一指纹区域的区域匹配结果为匹配成功，若匹配失败的特征匹配结果占比最大，则该第一指纹区域的区域匹配结果为匹配失败，如此，可确定多个第一指纹区域对应的多个区域匹配结果，并得到匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
23、若匹配成功的所述至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败。
其中，第一区域面积为匹配成功的至少一个第一指纹区域的面积之和，本申请实施例中，可确定匹配成功的至少一个第一指纹区域对应的第一区域面积，具体地，可将至少一个第一指纹区域对应的至少一个区域子面积相加，得到第一区域面积，然后，确定第一区域面积和第一图像面积的第一占比，若该第一占比大于第一预设阈值，可确定第一指纹图像匹配成功，进而，可执行预设解锁操作，否则，确定第一指纹图像匹配失败，进而，发出提示信息。
103、通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置。
本申请实施例中，若第一指纹图像的第一匹配结果为匹配失败，可提示用户移动手指至第二位置，进而，获取手指触控第二位置的第二指纹图像。
104、将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
本申请实施例中，将第二指纹图像与预设指纹模板进行匹配，得到第二匹配结果的具体实施细节，可参考将第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果的具体实施细节，此处不作限制。
其中，若第二指纹图像的第二匹配结果为匹配成功，则可直接进行解锁操作，若第二匹配结果也为匹配失败，则可根据第一匹配结果和第二匹配结果确定指纹识别是否成功，具体地，第一匹配结果中还可包括第一指纹图像中匹配成功的至少一个第一指纹区域，第二匹配结果中还可包括第二指纹图像中匹配成功的至少一个第二指纹区域，由于第一指纹图像和第二指纹图像均为同一手指的指纹图像，可根据至少一个第一指纹区域和至少一个第二指纹区域确定指纹识别是否成功。
可选地，上述步骤104中，将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果，可以包括如下步骤：
41、将所述第二指纹图像划分为多个第二指纹区域；
42、确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域；
43、根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果；
根据所述第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功，可以包括如下步骤：
44、将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像；
45、确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比；
46、若所述目标占比大于第二预设阈值，确定所述指纹识别成功；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
其中，将第二指纹图像划分为多个第二指纹区域的方式与将第一指纹图像划分为多个 第一指纹区域的方式一致，如此，可保证后续根据第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功的结果的准确度。
其中，考虑到至少一个第一指纹区域对应的预设指纹模板中的模板区域与至少一个第二指纹区域对应的预设指纹模板中的模板区域不完全一样，因此，可将匹配成功的至少一个第一指纹区域和匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像，请参阅图1F，图1F为本申请实施例提供的一种将匹配成功的至少一个第一指纹区域和匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接的演示示意图，如此，可以得到指纹区域图像，指纹区域图像中的指纹特征点均为匹配成功的指纹特征点，进而，可确定指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比，若目标占比大于第二预设阈值，确定指纹识别成功；若目标占比小于或等于第二预设阈值，确定指纹识别失败。
举例说明，若针对每一指纹图像，例如第一指纹图像或第二指纹图像，设定了第一预设阈值为85％，则针对第一指纹图像，若至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比为70％，针对第二指纹图像，若指示一个第二指纹区域对应的第二区域面积与第二指纹图像的目标图像面积的第二占比为75％，则单独根据第一指纹图像或第二指纹图像的匹配结果，得到指纹识别失败的结果，进而，可将匹配成功的至少一个第一指纹区域和匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像，假定设定第二预设阈值为90％，若确定指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比为91％，表明目标占比大于第二预设阈值，进而，可确定指纹识别成功，如此，可根据第一匹配结果和第二匹配结果确定最终的指纹识别结果，不需要再一次采集一次指纹图像，即可确定指纹识别成功，从而，可减少采集指纹图像的次数，提高指纹识别的效率。
可以看出，本申请实施例中所描述的指纹识别方法，应用于电子设备，该电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏，通过在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像，将第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若第一匹配结果为匹配失败，发出提示信息，提示目标对象调整手指触控的位置，通过超声波模组获取第二指纹图像，将第二指纹图像与预设指纹模板进行匹配，得到第二匹配结果；若第二匹配结果为匹配失败，根据第一匹配结果和第二匹配结果确定指纹识别是否成功，若指纹识别成功，执行预设解锁操作，如此，能够在显示屏上存在污渍时，提示用户移动手指，并根据两个指纹图像的匹配结果确定最终的指纹识别结果，从而，提高指纹识别效率。
与上述图1C所示的实施例一致地，请参阅图2，图2是本申请实施例提供的一种指纹识别方法的流程示意图，如图所示，应用于如图1A所示的电子设备，所述电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏；本指纹识别方法包括：
201、在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像。
202、将所述第一指纹图像划分为多个第一指纹区域。
203、确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域。
204、若所述匹配成功的至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，执行预设解锁操作。
205、若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置。
206、通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的 第二位置。
207、将所述第二指纹图像划分为多个第二指纹区域。
208、确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域。
209、根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果。
210、若所述第二匹配结果为匹配失败，将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像。
211、确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比。
212、若所述目标占比大于第二预设阈值，确定所述指纹识别成功，并执行预设解锁操作；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
其中，上述步骤201-步骤212的具体描述可以参照上述图1C所描述的指纹识别方法的相应步骤，在此不再赘述。
可以看出，本申请实施例中所描述的指纹识别方法，应用于电子设备，该电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏，可将第一指纹图像划分为多个第一指纹区域，进而根据多个第一指纹区域的区域匹配结果确定第一指纹图像的匹配结果，如此，可提高指纹识别的准确性，此外，可在显示屏上存在污渍，导致第一指纹图像和第二指纹图像的匹配结果失败时，根据匹配成功的至少一个第一指纹区域和匹配成功的至少一个第二指纹区域确定最终的指纹识别结果，如此，提高指纹识别效率。
与上述实施例一致地，请参阅图3，图3是本申请实施例提供的一种电子设备300的结构示意图，如图所示，该电子设备300包括处理器310、存储器320、通信接口330以及一个或多个程序321，所述电子设备包括超声波模组340和显示屏350，上述一个或多个程序被存储在上述存储器中，并且被配置由上述处理器执行，本申请实施例中，上述程序321包括用于执行以下步骤的指令：
在所述显示屏的第一位置处于被触摸状态时，通过所述超声波模组获取第一指纹图像；
将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
可以看出，本申请实施例中所描述的电子设备，该电子设备包括超声波模组和显示屏，通过在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像，将第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若第一匹配结果为匹配失败，发出提示信息，提示目标对象调整手指触控的位置，通过超声波模组获取第二指纹图像，将第二指纹图像与预设指纹模板进行匹配，得到第二匹配结果；若第二匹配结果为匹配失败，根据第一匹配结果和第二匹配结果确定指纹识别是否成功，若指纹识别成功，执行预设解锁操作，如此，能够在显示屏上存在污渍时，提示用户移动手指，并根据两个指纹图像的匹配结果确定最终的指纹识别结果，从而，提高指纹识别效率。
在一个可能的示例中，在所述将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果方面，上述程序321包括用于执行以下步骤的指令：
将所述第一指纹图像划分为多个第一指纹区域；
确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域；
若所述匹配成功的至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败。
在一个可能的示例中，在所述将所述第一指纹图像划分为多个第一指纹区域方面，上述程序321包括用于执行以下步骤的指令：
将所述第一指纹图像进行特征提取，得到第一特征点点集；
根据所述第一特征点集中多个第一特征点的对应的多个特征匹配结果的分布情况将所述第一指纹图像划分为多个第一指纹区域。
在一个可能的示例中，在所述确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域方面，上述程序321包括用于执行以下步骤的指令：
根据所述多个第一指纹区域中每一指纹区域包括的多个第一特征点的多个特征匹配结果中占比最大的特征匹配结果作为对应指纹区域的区域匹配结果，得到多个区域匹配结果；
确定所述多个区域匹配结果中匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
在一个可能的示例中，在所述将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果方面，上述程序321还包括用于执行以下步骤的指令：
将所述第二指纹图像划分为多个第二指纹区域；
确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域；
根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果；
在所述根据所述第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功方面，上述程序还包括用于执行以下步骤的指令：
将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像；
确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比；
若所述目标占比大于第二预设阈值，确定所述指纹识别成功；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
在一个可能的示例中，上述程序还包括用于执行以下步骤的指令：
在检测到所述显示屏上的预设区域存在手指接触时，确定所述显示屏处于被触摸状态，所述预设区域的面积大于预设面积阈值，所述第一指纹图像对应所述预设区域的所述第一位置，所述第二指纹图像对应所述预设区域的所述第二位置。
上述主要从方法侧执行过程的角度对本申请实施例的方案进行了介绍。可以理解的是，电子设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所提供的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对电子设备进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实 现时可以有另外的划分方式。
图4是本申请实施例中所涉及的指纹识别装置400的功能单元组成框图。该指纹识别装置400，应用于电子设备，所述电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏；所述装置400包括：获取单元401、匹配单元402和执行单元403，其中，
所述获取单元401，用于在所述显示屏的第一位置处于被触摸状态时，通过所述超声波模组获取第一指纹图像；
匹配单元402，用于将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
所述获取单元401，还用于通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
所述匹配单元402，还用于将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功；
所述执行单元403，用于在所述指纹识别成功时，执行预设解锁操作。
可以看出，本申请实施例中所描述的指纹识别装置，应用于电子设备，该电子设备包括超声波模组和显示屏，通过在显示屏的第一位置处于被触摸状态时，通过超声波模组获取第一指纹图像，将第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若第一匹配结果为匹配失败，发出提示信息，提示目标对象调整手指触控的位置，通过超声波模组获取第二指纹图像，将第二指纹图像与预设指纹模板进行匹配，得到第二匹配结果；若第二匹配结果为匹配失败，根据第一匹配结果和第二匹配结果确定指纹识别是否成功，若指纹识别成功，执行预设解锁操作，如此，能够在显示屏上存在污渍时，提示用户移动手指，并根据两个指纹图像的匹配结果确定最终的指纹识别结果，从而，提高指纹识别效率。
可选地，在所述将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果方面，所述匹配单元402具体用于：
将所述第一指纹图像划分为多个第一指纹区域；
确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域；
若所述匹配成功的至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败。
可选地，在所述将所述第一指纹图像划分为多个第一指纹区域方面，所述匹配单元402具体用于：
将所述第一指纹图像进行特征提取，得到第一特征点点集；
根据所述第一特征点集中多个第一特征点的对应的多个特征匹配结果的分布情况将所述第一指纹图像划分为多个第一指纹区域。
可选地，在所述确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域方面，所述匹配单元402具体用于：
根据所述多个第一指纹区域中每一指纹区域包括的多个第一特征点的多个特征匹配结果中占比最大的特征匹配结果作为对应指纹区域的区域匹配结果，得到多个区域匹配结果；
确定所述多个区域匹配结果中匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
可选地，在所述将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结 果方面，所述匹配单元402具体用于：
将所述第二指纹图像划分为多个第二指纹区域；
确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域；
根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果；
在所述根据所述第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功方面，所述匹配单元402具体用于：
将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像；
确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比；
若所述目标占比大于第二预设阈值，确定所述指纹识别成功；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
可选地，所述执行单元403还用于：
在检测到所述显示屏上的预设区域存在手指接触时，确定所述显示屏处于被触摸状态，所述预设区域的面积大于预设面积阈值，所述第一指纹图像对应所述预设区域的所述第一位置，所述第二指纹图像对应所述预设区域的所述第二位置。
可以理解的是，本实施例的指纹识别装置的各程序模块的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
本申请实施例还提供一种计算机存储介质，其中，该计算机存储介质存储用于电子数据交换的计算机程序，该计算机程序使得计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤，上述计算机包括电子设备。
本申请实施例还提供一种计算机程序产品，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤。该计算机程序产品可以为一个软件安装包，上述计算机包括电子设备。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本申请所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如上述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性或其它的形式。
上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
上述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储器中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储器中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本申请各个实施例上述方法的全部或部分步骤。而前述的存储器包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储器中，存储器可以包括：闪存盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取器(英文：Random Access Memory，简称：RAM)、磁盘或光盘等。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种电子设备，其特征在于，所述电子设备包括处理电路，以及与所述处理电路连接的显示屏模组，所述显示屏模组包括显示屏和超声波模组，其中，
    所述超声波模组，用于在所述显示屏的第一位置处于被触摸状态时，获取第一指纹图像；
    所述处理电路，用于将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
    所述超声波模组，还用于获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
    所述处理电路，还用于将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
  2. 根据权利要求1所述的电子设备，其特征在于，在所述将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果方面，所述处理电路具体用于：
    将所述第一指纹图像划分为多个第一指纹区域；
    确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域；
    若所述匹配成功的至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败。
  3. 根据权利要求2所述的电子设备，其特征在于，所述将所述第一指纹图像划分为多个第一指纹区域，所述处理电路具体用于：
    将所述第一指纹图像进行特征提取，得到第一特征点点集；
    根据所述第一特征点集中多个第一特征点的对应的多个特征匹配结果的分布情况将所述第一指纹图像划分为多个第一指纹区域。
  4. 根据权利要求2或3所述的电子设备，其特征在于，在所述确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域方面，所述处理电路具体用于：
    根据所述多个第一指纹区域中每一指纹区域包括的多个第一特征点的多个特征匹配结果中占比最大的特征匹配结果作为对应指纹区域的区域匹配结果，得到多个区域匹配结果；
    确定所述多个区域匹配结果中匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
  5. 根据权利要求2-4任一项所述的电子设备，其特征在于，在所述将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果方面，所述处理电路具体用于：
    将所述第二指纹图像划分为多个第二指纹区域；
    确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域；
    根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果；
    在所述根据所述第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功方面，所述处理电路具体用于：
    将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域 中不重叠的区域进行拼接，得到指纹区域图像；
    确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比；
    若所述目标占比大于第二预设阈值，确定所述指纹识别成功；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
  6. 根据权利要求1-5任一项所述的电子设备，其特征在于，所述超声波模组设置于所述显示屏的预设区域下方，所述显示屏还用于：
    在检测到所述显示屏上的预设区域存在手指接触时，确定所述显示屏处于被触摸状态，所述预设区域的面积大于预设面积阈值，所述第一指纹图像对应所述预设区域的所述第一位置，所述第二指纹图像对应所述预设区域的所述第二位置。
  7. 一种指纹识别方法，其特征在于，应用于电子设备，所述电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏；所述方法包括：
    在所述显示屏的第一位置处于被触摸状态时，通过所述超声波模组获取第一指纹图像；
    将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
    通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
    将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功，若所述指纹识别成功，执行预设解锁操作。
  8. 根据权利要求7所述的方法，其特征在于，所述将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果，包括：
    将所述第一指纹图像划分为多个第一指纹区域；
    确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域；
    若所述匹配成功的至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败。
  9. 根据权利要求8所述的方法，其特征在于，所述将所述第一指纹图像划分为多个第一指纹区域，包括：
    将所述第一指纹图像进行特征提取，得到第一特征点点集；
    根据所述第一特征点集中多个第一特征点的对应的多个特征匹配结果的分布情况将所述第一指纹图像划分为多个第一指纹区域。
  10. 根据权利要求8或9所述的方法，其特征在于，所述确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域，包括：
    根据所述多个第一指纹区域中每一指纹区域包括的多个第一特征点的多个特征匹配结果中占比最大的特征匹配结果作为对应指纹区域的区域匹配结果，得到多个区域匹配结果；
    确定所述多个区域匹配结果中匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
  11. 根据权利要求8-10任一项所述的方法，其特征在于，所述将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果，包括：
    将所述第二指纹图像划分为多个第二指纹区域；
    确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域；
    根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果；
    所述根据所述第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功，包括：
    将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像；
    确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比；
    若所述目标占比大于第二预设阈值，确定所述指纹识别成功；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
  12. 根据权利要求7-11任一项所述的方法，其特征在于，所述超声波模组设置于所述显示屏的预设区域下方，所述方法还包括：
    在检测到所述显示屏上的预设区域存在手指接触时，确定所述显示屏处于被触摸状态，所述预设区域的面积大于预设面积阈值，所述第一指纹图像对应所述预设区域的所述第一位置，所述第二指纹图像对应所述预设区域的所述第二位置。
  13. 一种指纹识别装置，其特征在于，应用于电子设备，所述电子设备包括显示屏模组，所述显示屏模组包括超声波模组和显示屏；所述装置包括：
    获取单元，用于在所述显示屏的第一位置处于被触摸状态时，通过所述超声波模组获取第一指纹图像；
    匹配单元，用于将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果；若所述第一匹配结果为匹配失败，发出提示信息，所述提示信息用于提示目标对象调整手指触控的位置；
    所述获取单元，还用于通过所述超声波模组获取第二指纹图像，所述第二指纹图像对应所述显示屏的第二位置；
    所述匹配单元，还用于将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果；若所述第二匹配结果为匹配失败，根据所述第一匹配结果和所述第二匹配结果确定指纹识别是否成功；
    执行单元，用于在所述指纹识别成功时，执行预设解锁操作。
  14. 根据权利要求13所述的装置，其特征在于，在所述将所述第一指纹图像与预设指纹模板进行匹配，得到第一匹配结果方面，所述匹配单元具体用于：
    将所述第一指纹图像划分为多个第一指纹区域；
    确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域；
    若所述匹配成功的至少一个第一指纹区域对应的第一区域面积与所述第一指纹图像的第一图像面积的第一占比大于第一预设阈值，确定所述第一指纹图像匹配成功，若所述第一占比小于或等于所述第一预设阈值，确定所述第一指纹图像匹配失败。
  15. 根据权利要求14所述的装置，其特征在于，在所述将所述第一指纹图像划分为多个第一指纹区域方面，所述匹配单元具体用于：
    将所述第一指纹图像进行特征提取，得到第一特征点点集；
    根据所述第一特征点集中多个第一特征点的对应的多个特征匹配结果的分布情况将所述第一指纹图像划分为多个第一指纹区域。
  16. 根据权利要求14或15所述的装置，其特征在于，在所述确定所述多个第一指纹区域中匹配成功的至少一个第一指纹区域方面，所述匹配单元具体用于：
    根据所述多个第一指纹区域中每一指纹区域包括的多个第一特征点的多个特征匹配结果中占比最大的特征匹配结果作为对应指纹区域的区域匹配结果，得到多个区域匹配结果；
    确定所述多个区域匹配结果中匹配成功的至少一个区域匹配结果对应的至少一个第一指纹区域。
  17. 根据权利要求14-16任一项所述的装置，其特征在于，在所述将所述第二指纹图像与所述预设指纹模板进行匹配，得到第二匹配结果方面，所述匹配单元具体用于：
    将所述第二指纹图像划分为多个第二指纹区域；
    确定所述多个第二指纹区域中匹配成功的至少一个第二指纹区域；
    根据该匹配成功的至少一个第二指纹区域确定所述第二指纹图像的第二匹配结果；
    在所述根据所述第一匹配结果和所述第二匹配结果确定所述指纹识别是否成功方面，所述匹配单元具体用于：
    将所述匹配成功的至少一个第一指纹区域和所述匹配成功的至少一个第二指纹区域中不重叠的区域进行拼接，得到指纹区域图像；
    确定所述指纹区域图像的目标图像面积与所述预设指纹模板的预设图像面积的目标占比；
    若所述目标占比大于第二预设阈值，确定所述指纹识别成功；若所述目标占比小于或等于所述第二预设阈值，确定所述指纹识别失败。
  18. 根据权利要求13-17任一项所述的装置，其特征在于，所述超声波模组设置于所述显示屏的预设区域下方，所述执行单元还用于：
    在检测到所述显示屏上的预设区域存在手指接触时，确定所述显示屏处于被触摸状态，所述预设区域的面积大于预设面积阈值，所述第一指纹图像对应所述预设区域的所述第一位置，所述第二指纹图像对应所述预设区域的所述第二位置。
  19. 一种电子设备，其特征在于，包括显示屏、超声波模组、处理器、存储器，所述存储器用于存储一个或多个程序，并且被配置由所述处理器执行，所述程序包括用于执行如权利要求7-12任一项所述的方法中的步骤的指令。
  20. 一种计算机可读存储介质，其特征在于，存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如权利要求7-12任一项所述的方法。
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