CN106778557B - Fingerprint identification device and method - Google Patents

Fingerprint identification device and method Download PDF

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CN106778557B
CN106778557B CN201611092724.9A CN201611092724A CN106778557B CN 106778557 B CN106778557 B CN 106778557B CN 201611092724 A CN201611092724 A CN 201611092724A CN 106778557 B CN106778557 B CN 106778557B
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fingerprint information
touch operation
fingerprint
area
sub
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CN106778557A (en
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里强
邱情
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Nubia Technology Co Ltd
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Nubia Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1347—Preprocessing; Feature extraction
    • 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

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Telephone Function (AREA)
  • Image Input (AREA)

Abstract

The invention discloses a fingerprint identification device, comprising: the mobile terminal comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring fingerprint information corresponding to a touch operation in one sub-area of a fingerprint identification area when the touch operation of the fingerprint identification area of the mobile terminal is received; the comparison module is used for comparing the acquired fingerprint information with prestored fingerprint information; the recording module is used for recording the matching times when the pre-stored fingerprint information is matched with the acquired fingerprint information; and the processing module is used for controlling the acquisition module to acquire the fingerprint information corresponding to the touch operation in the adjacent subareas of the subareas when the matching times do not reach the preset times threshold, and the comparison module and the recording module continue to execute corresponding operations until the fingerprint identification is determined to be successful when the matching times reach the preset times threshold. The invention also discloses a fingerprint identification method. The invention improves the efficiency of fingerprint identification.

Description

Fingerprint identification device and method
Technical Field
The invention relates to the technical field of mobile terminals, in particular to a fingerprint identification device and a fingerprint identification method.
Background
With the rapid development of science and technology, mobile terminals such as smart phones and PADs (tablets) have become indispensable devices in user life, for example, a user can conveniently and rapidly perform payment transaction, instant messaging and the like through a smart phone. While providing convenience to users, the security of personal information and property is becoming an increasing concern for users. Due to the uniqueness of the fingerprint, the fingerprint lock is widely applied to the mobile terminal, and the mobile terminal can be unlocked only when the fingerprint of the user is matched with the fingerprint which is input in advance. When a user fingerprint is identified, the whole fingerprint information corresponding to the user fingerprint is usually compared with the fingerprint information of the input fingerprint, for example, all feature points of the user fingerprint are extracted, and fingerprint identification is performed through feature point comparison. Because the whole fingerprint information needs to be compared in the fingerprint identification process, the efficiency of fingerprint identification is not high.
Disclosure of Invention
The invention mainly aims to provide a fingerprint identification device and a fingerprint identification method, and aims to solve the technical problem that the efficiency of fingerprint identification in the prior art is low.
In order to achieve the above object, the present invention provides a fingerprint recognition device, including:
the mobile terminal comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring fingerprint information corresponding to a certain sub-area of a fingerprint identification area of the mobile terminal when touch operation of the fingerprint identification area is received, and the fingerprint identification area comprises a plurality of sub-areas;
the comparison module is used for comparing the acquired fingerprint information with prestored fingerprint information;
the recording module is used for recording the matching times when the pre-stored fingerprint information is matched with the acquired fingerprint information;
the processing module is used for controlling the acquisition module to acquire the fingerprint information corresponding to the touch operation in the adjacent subareas of the subareas when the matching times do not reach the preset times threshold value, the comparison module compares the acquired fingerprint information with the prestored fingerprint information, and the recording module records the matching times when the prestored fingerprint information is matched with the acquired fingerprint information until the matching times reach the preset times threshold value, and the fingerprint identification is determined to be successful.
Optionally, the obtaining module is configured to:
when a touch operation of a fingerprint identification area of a mobile terminal is received, fingerprint information corresponding to the touch operation in a first sub-area of the fingerprint identification area is obtained, wherein the first sub-area is a sub-area which is firstly contacted in the fingerprint identification area by the touch operation.
Optionally, the obtaining module includes:
the determining unit is used for determining the adjacent sub-area of the sub-area when the matching times do not reach a preset time threshold;
and the acquisition unit is used for acquiring the fingerprint information corresponding to the touch operation in the adjacent sub-areas.
Optionally, if there are a plurality of adjacent sub-regions of the sub-region, the obtaining unit is configured to:
selecting one adjacent sub-area from a plurality of adjacent sub-areas of the sub-areas, wherein the contact area of the touch operation in the selected adjacent sub-area is larger than the contact area of the touch operation in other unselected adjacent sub-areas; and acquiring fingerprint information corresponding to the touch operation in the selected adjacent sub-area.
Optionally, the fingerprint identification device further includes:
the judging module is used for judging the type of the touch operation, wherein the type comprises a left finger touch operation and a right finger touch operation;
the comparison module is used for comparing the acquired fingerprint information with the first fingerprint information group when the touch operation is a left finger touch operation; and when the touch operation is right finger touch operation, comparing the acquired fingerprint information with the second fingerprint information group.
In addition, in order to achieve the above object, the present invention further provides a fingerprint identification method, including the steps of:
when a touch operation of a fingerprint identification area of a mobile terminal is received, acquiring fingerprint information corresponding to the touch operation in a certain sub-area of the fingerprint identification area, wherein the fingerprint identification area comprises a plurality of sub-areas;
comparing the acquired fingerprint information with prestored fingerprint information;
when pre-stored fingerprint information is matched with the acquired fingerprint information, recording the matching times;
when the matching times do not reach a preset time threshold value, acquiring fingerprint information corresponding to the touch operation in adjacent sub-areas of the sub-areas, and returning to execute the step of comparing the acquired fingerprint information with prestored fingerprint information;
and when the matching times reach the preset time threshold value, determining that the fingerprint identification is successful.
Optionally, when a touch operation of a fingerprint identification area of the mobile terminal is received, the step of acquiring fingerprint information corresponding to the touch operation in a certain sub-area of the fingerprint identification area includes:
when a touch operation of a fingerprint identification area of a mobile terminal is received, fingerprint information corresponding to the touch operation in a first sub-area of the fingerprint identification area is obtained, wherein the first sub-area is a sub-area which is firstly contacted in the fingerprint identification area by the touch operation.
Optionally, when the matching times do not reach a preset time threshold, the step of obtaining fingerprint information corresponding to the touch operation in an adjacent sub-area of the sub-area includes:
when the matching times do not reach a preset time threshold value, determining adjacent sub-regions of the sub-regions;
and acquiring fingerprint information corresponding to the touch operation in the adjacent sub-area.
Optionally, if there are a plurality of adjacent sub-areas of the sub-area, before the step of obtaining the fingerprint information corresponding to the touch operation in the adjacent sub-area, the method further includes:
selecting one adjacent sub-area from a plurality of adjacent sub-areas of the sub-areas, wherein the contact area of the touch operation in the selected adjacent sub-area is larger than the contact area of the touch operation in other unselected adjacent sub-areas;
the step of acquiring fingerprint information corresponding to the touch operation in the adjacent sub-area comprises:
and acquiring fingerprint information corresponding to the touch operation in the selected adjacent sub-area.
Optionally, the pre-stored fingerprint information includes a first fingerprint information group corresponding to a left finger of a user and a second fingerprint information group corresponding to a right finger of the user, and before the step of comparing the acquired fingerprint information with the pre-stored fingerprint information, the method further includes:
judging the type of the touch operation, wherein the type comprises a left finger touch operation and a right finger touch operation;
the step of comparing the acquired fingerprint information with pre-stored fingerprint information comprises:
when the touch operation is a left finger touch operation, comparing the acquired fingerprint information with the first fingerprint information group;
and when the touch operation is right finger touch operation, comparing the acquired fingerprint information with the second fingerprint information group.
When receiving a touch operation of a user in a fingerprint identification area of a mobile terminal, an acquisition module firstly acquires fingerprint information corresponding to the touch operation in a sub-area of the fingerprint identification area, then a comparison module compares the acquired fingerprint information with prestored fingerprint information, when the prestored fingerprint information is matched with the acquired fingerprint information, a recording module records the matching times, when the matching times does not reach a preset time threshold value, a processing module controls the acquisition module to acquire the fingerprint information corresponding to the touch operation in an adjacent sub-area of the sub-area, a comparison module compares the acquired fingerprint information with the prestored fingerprint information, and when the prestored fingerprint information is matched with the acquired fingerprint information, the recording module records the matching times and updates the matching times. If the recorded matching times still do not reach the preset time threshold, the processing module continues to control each module to execute corresponding operations until the recorded matching times reach the preset time threshold, that is, the local fingerprint information corresponding to the user fingerprint is matched, and at this time, the processing module determines that the fingerprint identification is successful. Therefore, only local fingerprint information is compared in the fingerprint identification process, and the comparison of the whole fingerprint information is avoided, so that the fingerprint identification efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of an alternative mobile terminal for implementing various embodiments of the present invention;
FIG. 2 is a diagram of a wireless communication system for the mobile terminal shown in FIG. 1;
FIG. 3 is a block diagram of a fingerprint recognition device according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative method of obtaining fingerprint information according to the present invention;
FIG. 5 is a block diagram of an acquisition module in a second embodiment of the fingerprint recognition device according to the present invention;
FIG. 6 is a flowchart illustrating a first exemplary embodiment of a fingerprint recognition method according to the present invention;
fig. 7 is a schematic flow chart illustrating a process of acquiring fingerprint information corresponding to the touch operation in an adjacent sub-area of the sub-area according to the second embodiment of the fingerprint identification method of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A mobile terminal implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The mobile terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.
Fig. 1 is a schematic hardware configuration of a mobile terminal implementing various embodiments of the present invention.
The mobile terminal 100 may include a wireless communication unit 110, an a/V (audio/video) input unit 120, a user input unit 130, an output unit 150, a memory 160, a controller 180, and a power supply unit 190, etc. Fig. 1 illustrates a mobile terminal having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. Elements of the mobile terminal will be described in detail below.
The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication device or network. For example, the wireless communication unit may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.
The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel and/or a terrestrial channel. The broadcast management server may be a server that generates and transmits a broadcast signal and/or broadcast associated information or a server that receives a previously generated broadcast signal and/or broadcast associated information and transmits it to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. The broadcast associated information may also be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), an Electronic Service Guide (ESG) of digital video broadcasting-handheld (DVB-H), and the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting devices. In particular, the broadcast receiving module 111 may receive a broadcast signal by using a signal such as multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO)@) A digital broadcasting apparatus such as a digital broadcasting apparatus, a terrestrial digital broadcasting integrated service (ISDB-T), etc. receives digital broadcasting. The broadcast receiving module 111 may be constructed as various broadcasting devices suitable for providing broadcast signals as well as the above-described digital broadcasting device. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored inIn memory 160 (or other type of storage medium).
The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.
The wireless internet module 113 supports wireless internet access of the mobile terminal. The module may be internally or externally coupled to the terminal. The wireless internet access technology to which the module relates may include WLAN (wireless LAN) (Wi-Fi), Wibro (wireless broadband), Wimax (worldwide interoperability for microwave access), HSDPA (high speed downlink packet access), and the like.
The short-range communication module 114 is a module for supporting short-range communication. Some examples of short-range communication technologies include bluetoothTMRadio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), zigbeeTMAnd so on.
The location information module 115 is a module for checking or acquiring location information of the mobile terminal. A typical example of the location information module is a GPS (global positioning device). According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites and applies triangulation to the calculated information, thereby accurately calculating three-dimensional current location information according to longitude, latitude, and altitude. Currently, a method for calculating position and time information uses three satellites and corrects an error of the calculated position and time information by using another satellite. In addition, the GPS module 115 can calculate speed information by continuously calculating current position information in real time.
The a/V input unit 120 is used to receive an audio or video signal. The a/V input unit 120 may include a camera 121 and a microphone 122, and the camera 121 processes image data of still pictures or video obtained by an image capturing apparatus in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 151. The image frames processed by the cameras 121 may be stored in the memory 160 (or other storage medium) or transmitted via the wireless communication unit 110, and two or more cameras 121 may be provided according to the construction of the mobile terminal. The microphone 122 may receive sounds (audio data) via the microphone in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the mobile communication module 112 in case of a phone call mode. The microphone 122 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The user input unit 130 may generate key input data according to a command input by a user to control various operations of the mobile terminal. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.
The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.
Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.
The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a microphone, a buzzer, and the like.
The memory 160 may store software programs and the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, and the like) that has been or will be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.
The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
The controller 180 generally controls the overall operation of the mobile terminal. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for reproducing (or playing back) multimedia data, and the multimedia module 181 may be constructed within the controller 180 or may be constructed separately from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
The power supply unit 190 receives external power or internal power and provides appropriate power required to operate various elements and components under the control of the controller 180.
The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.
Up to this point, mobile terminals have been described in terms of their functionality. Hereinafter, a slide-type mobile terminal among various types of mobile terminals, such as a folder-type, bar-type, swing-type, slide-type mobile terminal, and the like, will be described as an example for the sake of brevity. Accordingly, the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.
The mobile terminal 100 as shown in fig. 1 may be configured to operate with communication means such as wired and wireless communication means and satellite-based communication means that transmit data via frames or packets.
A communication apparatus in which a mobile terminal according to the present invention is operable will now be described with reference to fig. 2.
Such communication devices may use different air interfaces and/or physical layers. For example, the air interface used by the communication device includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and universal mobile telecommunications device (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and so forth. The following description relates to a CDMA communication device, as a non-limiting example, but such teachings are equally applicable to other types of devices.
Referring to fig. 2, the CDMA wireless communication apparatus may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station BS270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that an apparatus as shown in fig. 2 may include a plurality of BSCs 275.
Each BS270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz,5MHz, etc.).
The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS270 may also be referred to as a base transceiver sub-assembly (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each sector of a particular BS270 may be referred to as a plurality of cell sites.
As shown in fig. 2, a Broadcast Transmitter (BT)295 transmits a broadcast signal to the mobile terminal 100 operating within the apparatus. A broadcast receiving module 111 as shown in fig. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 2, several global positioning device (GPS) satellites 300 are shown. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.
In fig. 2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1 is generally configured to cooperate with satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.
As a typical operation of the wireless communication apparatus, the BS270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS270 to transmit forward link signals to the mobile terminal 100.
Based on the above mobile terminal hardware structure and communication system, the present invention provides various embodiments of the fingerprint identification device.
As shown in fig. 3, in a first embodiment, the fingerprint recognition device includes:
the system comprises an acquisition module 10, a processing module and a processing module, wherein the acquisition module is used for acquiring fingerprint information corresponding to a certain sub-area of a fingerprint identification area of a mobile terminal when a touch operation of the fingerprint identification area is received, and the fingerprint identification area comprises a plurality of sub-areas;
with the rapid development of science and technology, mobile terminals such as smart phones and PADs (tablets) have become indispensable devices in user life, for example, a user can conveniently and rapidly perform payment transaction, WeChat chat and the like through a smart phone. While providing convenience to users, the security of personal information and property is becoming an increasing concern for users. Due to the uniqueness of the fingerprint, the fingerprint lock is widely applied to the mobile terminal, and the mobile terminal can be unlocked only when the fingerprint of the user is matched with the fingerprint which is input in advance. When the user fingerprint is identified, the whole fingerprint information corresponding to the user fingerprint is compared with the fingerprint information of the input fingerprint, for example, all feature points of the user fingerprint are extracted, fingerprint identification is performed by comparing the feature points, and since all feature points are required to be compared, the efficiency of fingerprint identification is not high. When a user unlocks the mobile terminal through the fingerprint, the user generally needs to wait for a period of time, so that the user experience is poor.
In order to improve user experience, in this embodiment, fingerprint identification is performed by performing partition comparison on fingerprints. Specifically, the fingerprint identification area of the mobile terminal is divided into a plurality of sub-areas in advance, that is, the fingerprint identification area of the mobile terminal includes a plurality of different sub-areas. When a user wants to unlock the fingerprint of the mobile terminal, the user performs a touch operation in the fingerprint identification area of the mobile terminal, and when the touch operation performed in the fingerprint identification area by the user is received, the obtaining module 10 first obtains only the fingerprint information corresponding to the touch operation in one of the sub-areas of the fingerprint identification area. The fingerprint information may be data information of a fingerprint, and those skilled in the art can understand that the fingerprint information may also be image information of a fingerprint, etc.
Optionally, the obtaining module 10 is configured to:
when a touch operation of a fingerprint identification area of a mobile terminal is received, fingerprint information corresponding to the touch operation in a first sub-area of the fingerprint identification area is obtained, wherein the first sub-area is a sub-area which is firstly contacted in the fingerprint identification area by the touch operation.
Because the touch operation executed by the user on the fingerprint identification area is a dynamic process, the touch operation is not simultaneously contacted with all the sub-areas at one time, but has a sequence, some sub-areas are contacted firstly, and some sub-areas are contacted later. When receiving a touch operation of a fingerprint identification area of a mobile terminal, the obtaining module 10 first obtains fingerprint information corresponding to the touch operation on a sub-area which is first contacted by the touch operation. For example, if the first sub-region of the touch operation in the fingerprint identification region is the first sub-region, the obtaining module 10 first obtains the fingerprint information corresponding to the touch operation in the first sub-region.
A comparison module 20, configured to compare the acquired fingerprint information with pre-stored fingerprint information;
the recording module 30 is configured to record matching times when there is a match between pre-stored fingerprint information and the acquired fingerprint information;
the processing module 40 is used for controlling the acquisition module to acquire the fingerprint information corresponding to the touch operation in the adjacent subareas of the subareas when the matching times do not reach the preset times threshold, the comparison module compares the acquired fingerprint information with the pre-stored fingerprint information, and the recording module records the matching times when the pre-stored fingerprint information is matched with the acquired fingerprint information until the matching times reach the preset times threshold, and the fingerprint identification is determined to be successful.
The user inputs the fingerprint of the finger of the user in the mobile terminal in advance, and a plurality of fingerprint information corresponding to the fingerprint of the finger of the user are prestored in the mobile terminal. After the obtaining module 10 obtains the fingerprint information corresponding to the touch operation on the sub-region, the comparing module 20 compares the currently obtained fingerprint information with the pre-stored fingerprint information, when there is a match between the pre-stored fingerprint information and the currently obtained fingerprint information, the recording module 30 records the matching times, for example, sets the initial value of the matching times to 0, and when the matching is successful at this time, the recording module 30 adds 1 to the initial value of the matching times, that is, updates the matching times to 1. When there is no match between the pre-stored fingerprint information and the currently acquired fingerprint information, that is, the currently identified fingerprint of the mobile terminal is different from the pre-entered fingerprint, at this time, the processing module 40 determines that the fingerprint identification fails, and the fingerprint identification operation is finished.
Due to the uniqueness of fingerprints, if the fingerprint information corresponding to a local area of a fingerprint is matched, the fingerprint is basically a matched fingerprint. Therefore, in this embodiment, a preset number threshold corresponding to fingerprint information matching is preset, for example, the preset number threshold is preset to be 3, it can be understood that a specific numerical value of the preset number threshold can be flexibly set according to an actual situation, and is not limited herein.
After the recording module 30 records the matching times, the processing module 40 compares the recorded matching times with a preset time threshold, and when the recorded matching times does not reach the preset time threshold, that is, when it is indicated that fingerprint information comparison needs to be continued, at this time, the processing module 40 controls the obtaining module 10 to obtain the fingerprint information corresponding to the touch operation in the adjacent sub-area of the sub-area where the fingerprint information has been obtained. The comparison module 20 compares the acquired fingerprint information with pre-stored fingerprint information, and when the pre-stored fingerprint information is matched with the acquired fingerprint information, the recording module 30 records the matching times and updates the matching times. If the recorded matching times do not reach the preset time threshold, the processing module 40 continues to control the modules to execute corresponding operations until the recorded matching times reach the preset time threshold, that is, the fingerprint information corresponding to the touch operation on the adjacent sub-areas is matched, and at this time, the processing module 40 determines that the fingerprint identification is successful. When the fingerprint identification is determined to be successful, the processing module 40 may perform an unlocking operation, and after the unlocking operation is completed, the user may perform various operations on the mobile terminal.
For example, as shown in fig. 4, if the fingerprint identification area of the mobile terminal includes a sub-area a, a sub-area B, a sub-area C, and a sub-area D, the preset threshold of times is 3. After the obtaining module 10 first obtains the first fingerprint information of the touch operation in the sub-area a, if the first fingerprint information is not matched with the pre-stored fingerprint information, the processing module 40 determines that the fingerprint identification fails, and the fingerprint identification operation is finished; if the first fingerprint information matches with the pre-stored fingerprint information, the recording module 30 records that the matching frequency is 1, and at this time, the recorded matching frequency does not reach the threshold of the preset frequency, and the processing module 40 controls the obtaining module 10 to obtain the second fingerprint information corresponding to the touch operation on the adjacent sub-area (sub-area B) of the sub-area a. If the second fingerprint information does not match the pre-stored fingerprint information, the processing module 40 determines that the fingerprint identification fails, and the fingerprint identification operation is finished; if the second fingerprint information matches with the pre-stored fingerprint information, the recording module 30 updates the matching times, records the matching times as 2, and at this time, the recorded matching times still do not reach the preset time threshold, and the processing module 40 continues to control the obtaining module 10 to obtain the third fingerprint information corresponding to the touch operation on the adjacent sub-area (sub-area C) of the sub-area B. If the third fingerprint information does not match the pre-stored fingerprint information, the processing module 40 determines that the fingerprint identification fails, and the fingerprint identification operation is finished; if the third fingerprint information matches with the pre-stored fingerprint information, the recording module 30 updates the matching times, records the matching times as 3, and at this time, the recorded matching times reach a preset time threshold, and the processing module 40 determines that the fingerprint identification is successful.
The proposal of the embodiment comprises that when receiving the touch operation of the user in the fingerprint identification area of the mobile terminal, the obtaining module 10 first obtains the fingerprint information corresponding to the touch operation in a sub-area of the fingerprint identification area, the comparison module 20 then compares the acquired fingerprint information with the pre-stored fingerprint information, and when there is a match between the pre-stored fingerprint information and the acquired fingerprint information, the recording module 30 records the number of matches, when the matching times does not reach the preset times threshold, the processing module 40 controls the obtaining module 10 to obtain the fingerprint information corresponding to the touch operation in the adjacent sub-area of the sub-area, the comparing module 20 compares the obtained fingerprint information with the pre-stored fingerprint information, when there is a match between the pre-stored fingerprint information and the acquired fingerprint information, the recording module 30 records the matching times and updates the matching times. If the recorded matching times do not reach the preset time threshold, the processing module 40 continues to control each module to execute corresponding operations until the recorded matching times reach the preset time threshold, that is, it indicates that the plurality of local fingerprint information corresponding to the user fingerprint are all matched, and at this time, the processing module 40 determines that the fingerprint identification is successful. Therefore, the whole fingerprint information corresponding to the user fingerprint does not need to be compared in the fingerprint identification process, and the fingerprint identification efficiency is improved.
Further, as shown in fig. 5, a second embodiment of the fingerprint recognition device of the present invention is proposed. The second embodiment of the fingerprint recognition device differs from the first embodiment of the fingerprint recognition device in that, in the second embodiment of the fingerprint recognition device, the obtaining module 10 comprises:
the determining unit 11 is configured to determine an adjacent sub-region of the sub-region when the matching frequency does not reach a preset frequency threshold;
an obtaining unit 12, configured to obtain fingerprint information corresponding to the touch operation in the adjacent sub-area.
When the recorded matching times do not reach the preset time threshold, that is, the fingerprint information comparison needs to be continued, at this time, the processing module 40 controls the obtaining module 10 to obtain the fingerprint information corresponding to the touch operation in the adjacent sub-area of the sub-area where the fingerprint information has been obtained. Specifically, the determination unit 11 first determines a neighboring sub-area of the sub-area where the fingerprint information has been acquired, and then the acquisition unit 12 acquires the fingerprint information corresponding to the touch operation in the determined neighboring sub-area. It is understood that the adjacent sub-area determined by the determining unit 11 may be one or more. If there is exactly one adjacent sub-area, the obtaining unit 12 directly obtains the fingerprint information corresponding to the touch operation in the determined adjacent sub-area. If there are a plurality of adjacent sub-regions, the obtaining unit 12 is further configured to:
selecting one adjacent sub-area from a plurality of adjacent sub-areas of the sub-areas, wherein the contact area of the touch operation in the selected adjacent sub-area is larger than the contact area of the touch operation in other unselected adjacent sub-areas; and acquiring fingerprint information corresponding to the touch operation in the selected adjacent sub-area.
When there are a plurality of adjacent sub-regions, the obtaining unit 12 selects an adjacent sub-region from the plurality of adjacent sub-regions, for example, because the contact area of the touch operation on each adjacent sub-region is different, the adjacent sub-region with the largest contact area of the touch operation can be selected from the plurality of adjacent sub-regions, that is, the contact area of the touch operation in the selected adjacent sub-region is larger than the contact area of the touch operation in other unselected adjacent sub-regions. The obtaining unit 12 then obtains the fingerprint information corresponding to the touch operation in the selected adjacent sub-area. It will be understood by those skilled in the art that one adjacent sub-region may be selected from the plurality of adjacent sub-regions in other manners, for example, one adjacent sub-region with the largest number of feature points is selected from the plurality of adjacent sub-regions according to the feature point information, and the selection manner of the adjacent sub-region is not limited herein.
Further, because the user can type left hand fingerprint and right hand fingerprint usually when typing the fingerprint, in this embodiment, the fingerprint information of prestoring includes the first fingerprint information group that the user left finger corresponds and the second fingerprint information group that the right finger corresponds. The fingerprint identification device further comprises:
the judging module is used for judging the type of the touch operation, wherein the type comprises a left finger touch operation and a right finger touch operation;
the alignment module 20 is configured to:
when the touch operation is a left finger touch operation, comparing the acquired fingerprint information with the first fingerprint information group;
and when the touch operation is right finger touch operation, comparing the acquired fingerprint information with the second fingerprint information group.
In order to further improve the efficiency of fingerprint identification, before the comparison module 10 compares the acquired fingerprint information with the pre-stored fingerprint information, the determination module first determines the type of touch operation of the user, where the type of touch operation includes a left-finger touch operation and a right-finger touch operation. For example, the type of the touch operation of the user may be determined according to a movement direction corresponding to the touch operation of the user, and when the movement direction corresponding to the touch operation is from left to right, the touch operation is determined as a right finger touch operation; and when the motion direction corresponding to the touch operation is from right to left, judging that the touch operation is left finger touch operation. It will be understood by those skilled in the art that the determination of the type of the touch operation of the user is not limited to the above-mentioned method, and the determination of the type of the touch operation of the user may be performed in other ways, which is not limited herein.
When the touch operation of the user is a left finger touch operation, the comparison module 20 compares the acquired fingerprint information with a pre-stored first fingerprint information group, but does not compare the acquired fingerprint information with a pre-stored second fingerprint information group; when the touch operation of the user is a right finger touch operation, the comparison module 20 compares the acquired fingerprint information with the pre-stored second fingerprint information group, instead of the pre-stored first fingerprint information group. Therefore, the range of fingerprint comparison is narrowed, and the efficiency of fingerprint identification is further improved.
According to the scheme provided by the embodiment, before comparing the acquired fingerprint information with the pre-stored fingerprint information, the judging module judges the type of the touch operation of the user firstly, and when the touch operation of the user is a left finger touch operation, the comparing module 20 compares the acquired fingerprint information with the pre-stored first fingerprint information group, but does not compare the acquired fingerprint information with the pre-stored second fingerprint information group; when the touch operation of the user is a right finger touch operation, the comparison module 20 only compares the acquired fingerprint information with the pre-stored second fingerprint information group, but does not compare the acquired fingerprint information with the pre-stored first fingerprint information group, so that the fingerprint comparison range is reduced, and the fingerprint identification efficiency is further improved.
The invention further provides a fingerprint identification method.
Referring to fig. 6, fig. 6 is a flowchart illustrating a first embodiment of a fingerprint identification method according to the present invention, wherein the fingerprint identification method includes the following steps:
step S10, when receiving a touch operation of a fingerprint identification area of the mobile terminal, acquiring fingerprint information corresponding to the touch operation in one sub-area of the fingerprint identification area, wherein the fingerprint identification area comprises a plurality of sub-areas;
with the rapid development of science and technology, mobile terminals such as smart phones and PADs (tablets) have become indispensable devices in user life, for example, a user can conveniently and rapidly perform payment transaction, WeChat chat and the like through a smart phone. While providing convenience to users, the security of personal information and property is becoming an increasing concern for users. Due to the uniqueness of the fingerprint, the fingerprint lock is widely applied to the mobile terminal, and the mobile terminal can be unlocked only when the fingerprint of the user is matched with the fingerprint which is input in advance. When the user fingerprint is identified, the whole fingerprint information corresponding to the user fingerprint is compared with the fingerprint information of the input fingerprint, for example, all feature points of the user fingerprint are extracted, fingerprint identification is performed by comparing the feature points, and since all feature points are required to be compared, the efficiency of fingerprint identification is not high. When a user unlocks the mobile terminal through the fingerprint, the user generally needs to wait for a period of time, so that the user experience is poor.
In order to improve user experience, in this embodiment, fingerprint identification is performed by performing partition comparison on fingerprints. Specifically, the fingerprint identification area of the mobile terminal is divided into a plurality of sub-areas in advance, that is, the fingerprint identification area of the mobile terminal includes a plurality of different sub-areas. When a user wants to unlock the fingerprint of the mobile terminal, the user executes touch operation in the fingerprint identification area of the mobile terminal, and when the mobile terminal receives the touch operation executed by the user in the fingerprint identification area, firstly, only fingerprint information corresponding to the touch operation in one sub-area of the fingerprint identification area is obtained. The fingerprint information may be data information of a fingerprint, and those skilled in the art can understand that the fingerprint information may also be image information of a fingerprint, etc.
Optionally, the step S10 includes:
when a touch operation of a fingerprint identification area of a mobile terminal is received, fingerprint information corresponding to the touch operation in a first sub-area of the fingerprint identification area is obtained, wherein the first sub-area is a sub-area which is firstly contacted in the fingerprint identification area by the touch operation.
Because the touch operation executed by the user on the fingerprint identification area is a dynamic process, the touch operation is not simultaneously contacted with all the sub-areas at one time, but has a sequence, some sub-areas are contacted firstly, and some sub-areas are contacted later. When a touch operation of a fingerprint identification area of the mobile terminal is received, the mobile terminal firstly acquires fingerprint information corresponding to the touch operation on a sub-area which is firstly contacted with the touch operation. For example, if the sub-area that the touch operation first contacts in the fingerprint identification area is the first sub-area, the mobile terminal first acquires the fingerprint information corresponding to the touch operation in the first sub-area.
Step S20, comparing the acquired fingerprint information with pre-stored fingerprint information;
step S30, when the pre-stored fingerprint information is matched with the acquired fingerprint information, recording the matching times;
the user inputs the fingerprint of the finger of the user in the mobile terminal in advance, and a plurality of fingerprint information corresponding to the fingerprint of the finger of the user are prestored in the mobile terminal. After the mobile terminal acquires the fingerprint information corresponding to the touch operation on the sub-area, comparing the currently acquired fingerprint information with the pre-stored fingerprint information, when the pre-stored fingerprint information is matched with the currently acquired fingerprint information, recording the matching times by the mobile terminal, for example, setting an initial value of the matching times to be 0, and when the matching is successful, adding 1 to the initial value of the matching times, namely updating the matching times to be 1. When the pre-stored fingerprint information does not match with the currently acquired fingerprint information, that is, the currently identified fingerprint of the mobile terminal is different from the pre-recorded fingerprint, at this time, it is determined that the fingerprint identification fails, and the fingerprint identification operation is finished.
Step S40, judging whether the matching times reach a preset time threshold value;
step S50, if not, acquiring the fingerprint information corresponding to the touch operation in the adjacent subarea of the subarea, and returning to execute the step S20;
and step S60, if yes, determining that the fingerprint identification is successful.
Due to the uniqueness of fingerprints, if the fingerprint information corresponding to a local area of a fingerprint is matched, the fingerprint is basically a matched fingerprint. Therefore, in this embodiment, a preset number threshold corresponding to fingerprint information matching is preset, for example, the preset number threshold is preset to be 3, it can be understood that a specific numerical value of the preset number threshold can be flexibly set according to an actual situation, and is not limited herein.
And after the matching times are recorded, comparing the recorded matching times with a preset time threshold, when the recorded matching times do not reach the preset time threshold, namely, the fingerprint information comparison is required to be continued, and at the moment, acquiring the fingerprint information corresponding to the touch operation in the adjacent subarea of the subarea where the fingerprint information is acquired. And returning to the step S20, and circularly executing the operations in steps S20-S50 until the recorded matching times reach a preset time threshold, that is, the fingerprint information corresponding to the touch operation on the adjacent sub-areas is all matched, at which time, it is determined that the fingerprint identification is successful. When the fingerprint identification is determined to be successful, the mobile terminal can execute the unlocking operation, and after the unlocking operation is completed, the user can perform various operations on the mobile terminal.
For example, as shown in fig. 4, if the fingerprint identification area of the mobile terminal includes a sub-area a, a sub-area B, a sub-area C, and a sub-area D, the preset threshold of times is 3. After the mobile terminal firstly acquires first fingerprint information of touch operation in the subarea A, if the first fingerprint information is not matched with the prestored fingerprint information, determining that fingerprint identification fails, and finishing fingerprint identification operation; if the first fingerprint information is matched with the pre-stored fingerprint information, the mobile terminal records that the matching times is 1, at this time, the recorded matching times does not reach a preset time threshold value, and the mobile terminal continues to acquire second fingerprint information corresponding to the touch operation on an adjacent sub-area (sub-area B) of the sub-area A. If the second fingerprint information is not matched with the prestored fingerprint information, determining that the fingerprint identification fails, and finishing the fingerprint identification operation; if the second fingerprint information is matched with the pre-stored fingerprint information, the mobile terminal updates the matching times, records the matching times as 2, at this time, the recorded matching times still do not reach a preset time threshold, and the mobile terminal continues to acquire third fingerprint information corresponding to the touch operation on an adjacent subregion (subregion C) of the subregion B. If the third fingerprint information is not matched with the prestored fingerprint information, determining that the fingerprint identification fails, and finishing the fingerprint identification operation; and if the third fingerprint information is matched with the prestored fingerprint information, updating the matching times by the mobile terminal, recording the matching times as 3, and determining that the fingerprint identification is successful by the mobile terminal when the recorded matching times reach a preset time threshold value.
According to the scheme provided by the embodiment, when the touch operation of a user in the fingerprint identification area of the mobile terminal is received, the fingerprint information corresponding to the touch operation in one sub-area of the fingerprint identification area is firstly acquired, then the acquired fingerprint information is compared with the pre-stored fingerprint information, when the pre-stored fingerprint information is matched with the acquired fingerprint information, the matching times are recorded, when the matching times do not reach the threshold value of the preset times, the fingerprint information corresponding to the touch operation in the adjacent sub-area of the sub-area is acquired, the acquired fingerprint information is compared with the pre-stored fingerprint information, the operation is circulated until the recorded matching times reach the threshold value of the preset times, namely, the plurality of local fingerprint information corresponding to the user fingerprints are all matched, and at this time, the fingerprint identification is determined to be successful. Therefore, the whole fingerprint information corresponding to the user fingerprint does not need to be compared in the fingerprint identification process, and the fingerprint identification efficiency is improved.
Further, as shown in fig. 7, a second embodiment of the fingerprint identification method of the present invention is proposed. The second embodiment of the fingerprint identification method differs from the first embodiment of the fingerprint identification method in that, in the second embodiment of the fingerprint identification method, the step S50 includes:
step S51, determining a neighboring subregion of the subregion;
step S52, acquiring fingerprint information corresponding to the touch operation in the adjacent sub-area.
When the recorded matching times do not reach the preset time threshold, that is, the fingerprint information comparison needs to be continued, at this time, the mobile terminal first determines the adjacent sub-area of the sub-area where the fingerprint information has been acquired, and then acquires the fingerprint information corresponding to the touch operation in the determined adjacent sub-area. It is understood that there may be one or more of the determined adjacent sub-regions. And if only one adjacent sub-area exists, directly acquiring the fingerprint information corresponding to the touch operation in the determined adjacent sub-area. If there are a plurality of adjacent sub-regions, before the step S52, the method further includes the steps of:
step a, selecting one adjacent sub-area from a plurality of adjacent sub-areas of the sub-areas, wherein the contact area of the touch operation in the selected adjacent sub-area is larger than the contact area of the touch operation in other unselected adjacent sub-areas;
the step S52 includes:
and acquiring fingerprint information corresponding to the touch operation in the selected adjacent sub-area.
When there are a plurality of adjacent sub-regions, one adjacent sub-region is selected from the plurality of adjacent sub-regions, for example, because the contact area of the touch operation on each adjacent sub-region is different, one adjacent sub-region with the largest contact area of the touch operation can be selected from the plurality of adjacent sub-regions, that is, the contact area of the touch operation in the selected adjacent sub-region is larger than the contact area of the touch operation in other unselected adjacent sub-regions. And then acquiring fingerprint information corresponding to the touch operation in the selected adjacent sub-area. It will be understood by those skilled in the art that one adjacent sub-region may be selected from the plurality of adjacent sub-regions in other manners, for example, one adjacent sub-region with the largest number of feature points is selected from the plurality of adjacent sub-regions according to the feature point information, and the selection manner of the adjacent sub-region is not limited herein.
Further, because the user can type left hand fingerprint and right hand fingerprint usually when typing the fingerprint, in this embodiment, the fingerprint information of prestoring includes the first fingerprint information group that the user left finger corresponds and the second fingerprint information group that the right finger corresponds. Before the step S20, the method further includes:
b, judging the type of the touch operation, wherein the type comprises a left finger touch operation and a right finger touch operation;
the step S20 includes:
step c, when the touch operation is a left finger touch operation, comparing the acquired fingerprint information with the first fingerprint information group;
and d, comparing the acquired fingerprint information with the second fingerprint information group when the touch operation is a right finger touch operation.
In order to further improve the efficiency of fingerprint identification, before comparing the acquired fingerprint information with the pre-stored fingerprint information, the type of touch operation of a user is determined, wherein the type of touch operation includes a left finger touch operation and a right finger touch operation. For example, the type of the touch operation of the user may be determined according to a movement direction corresponding to the touch operation of the user, and when the movement direction corresponding to the touch operation is from left to right, the touch operation is determined as a right finger touch operation; and when the motion direction corresponding to the touch operation is from right to left, judging that the touch operation is left finger touch operation. It will be understood by those skilled in the art that the determination of the type of the touch operation of the user is not limited to the above-mentioned method, and the determination of the type of the touch operation of the user may be performed in other ways, which is not limited herein.
When the touch operation of the user is left finger touch operation, comparing the acquired fingerprint information with a prestored first fingerprint information group instead of a prestored second fingerprint information group; when the touch operation of the user is the right finger touch operation, the acquired fingerprint information is compared with the prestored second fingerprint information group, but not with the prestored first fingerprint information group. Therefore, the range of fingerprint comparison is narrowed, and the efficiency of fingerprint identification is further improved.
According to the scheme provided by the embodiment, before the acquired fingerprint information is compared with the pre-stored fingerprint information, the type of the touch operation of the user is judged, and when the touch operation of the user is a left finger touch operation, only the acquired fingerprint information is compared with a pre-stored first fingerprint information group, but not compared with a pre-stored second fingerprint information group; when the touch operation of the user is the right finger touch operation, the acquired fingerprint information is only compared with the prestored second fingerprint information group, but not with the prestored first fingerprint information group, so that the fingerprint comparison range is reduced, and the fingerprint identification efficiency is further improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. A fingerprint recognition apparatus, comprising:
the mobile terminal comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring fingerprint information corresponding to a certain sub-area of a fingerprint identification area of the mobile terminal when touch operation of the fingerprint identification area is received, and the fingerprint identification area comprises a plurality of sub-areas;
the comparison module is used for comparing the acquired fingerprint information with prestored fingerprint information;
the recording module is used for recording the matching times when the pre-stored fingerprint information is matched with the acquired fingerprint information;
the processing module is used for controlling the acquisition module to acquire fingerprint information corresponding to the touch operation in adjacent sub-areas of the sub-areas when the matching times do not reach a preset time threshold, the comparison module compares the acquired fingerprint information with pre-stored fingerprint information, and the recording module records the matching times when the pre-stored fingerprint information is matched with the acquired fingerprint information until the matching times reach the preset time threshold, and the fingerprint identification is determined to be successful;
wherein the acquisition module comprises:
the determining unit is used for determining the adjacent sub-area of the sub-area when the matching times do not reach a preset time threshold;
and the acquisition unit is used for acquiring the fingerprint information corresponding to the touch operation in the adjacent sub-areas.
2. The fingerprint recognition device of claim 1, wherein the acquisition module is configured to:
when a touch operation of a fingerprint identification area of a mobile terminal is received, fingerprint information corresponding to the touch operation in a first sub-area of the fingerprint identification area is obtained, wherein the first sub-area is a sub-area which is firstly contacted in the fingerprint identification area by the touch operation.
3. The fingerprint recognition apparatus according to claim 1, wherein if there are a plurality of adjacent sub-areas of the sub-areas, the obtaining unit is configured to:
selecting one adjacent sub-area from a plurality of adjacent sub-areas of the sub-areas, wherein the contact area of the touch operation in the selected adjacent sub-area is larger than the contact area of the touch operation in other unselected adjacent sub-areas; and acquiring fingerprint information corresponding to the touch operation in the selected adjacent sub-area.
4. The fingerprint recognition apparatus according to any one of claims 1-3, wherein the pre-stored fingerprint information comprises a first fingerprint information set corresponding to a left finger and a second fingerprint information set corresponding to a right finger of the user, the fingerprint recognition apparatus further comprising:
the judging module is used for judging the type of the touch operation, wherein the type comprises a left finger touch operation and a right finger touch operation;
the comparison module is used for comparing the acquired fingerprint information with the first fingerprint information group when the touch operation is a left finger touch operation; and when the touch operation is right finger touch operation, comparing the acquired fingerprint information with the second fingerprint information group.
5. A fingerprint identification method, characterized in that the fingerprint identification method comprises the steps of:
when a touch operation of a fingerprint identification area of a mobile terminal is received, acquiring fingerprint information corresponding to the touch operation in a certain sub-area of the fingerprint identification area, wherein the fingerprint identification area comprises a plurality of sub-areas;
comparing the acquired fingerprint information with prestored fingerprint information;
when pre-stored fingerprint information is matched with the acquired fingerprint information, recording the matching times;
when the matching times do not reach a preset time threshold value, acquiring fingerprint information corresponding to the touch operation in adjacent sub-areas of the sub-areas, and returning to execute the step of comparing the acquired fingerprint information with prestored fingerprint information;
when the matching times reach the preset time threshold, determining that the fingerprint identification is successful;
when the matching times do not reach a preset time threshold, the step of acquiring the fingerprint information corresponding to the touch operation in the adjacent subarea of the subarea comprises the following steps:
when the matching times do not reach a preset time threshold value, determining adjacent sub-regions of the sub-regions;
and acquiring fingerprint information corresponding to the touch operation in the adjacent sub-area.
6. The fingerprint identification method according to claim 5, wherein the step of acquiring the fingerprint information corresponding to the touch operation in a certain sub-area of the fingerprint identification area when receiving the touch operation of the fingerprint identification area of the mobile terminal comprises:
when a touch operation of a fingerprint identification area of a mobile terminal is received, fingerprint information corresponding to the touch operation in a first sub-area of the fingerprint identification area is obtained, wherein the first sub-area is a sub-area which is firstly contacted in the fingerprint identification area by the touch operation.
7. The fingerprint identification method according to claim 5, wherein if there are a plurality of adjacent sub-areas of the sub-areas, the step of obtaining the corresponding fingerprint information in the adjacent sub-areas before the touch operation further comprises:
selecting one adjacent sub-area from a plurality of adjacent sub-areas of the sub-areas, wherein the contact area of the touch operation in the selected adjacent sub-area is larger than the contact area of the touch operation in other unselected adjacent sub-areas;
the step of acquiring fingerprint information corresponding to the touch operation in the adjacent sub-area comprises:
and acquiring fingerprint information corresponding to the touch operation in the selected adjacent sub-area.
8. The fingerprint identification method according to any one of claims 6-7, wherein the pre-stored fingerprint information comprises a first fingerprint information set corresponding to a left finger and a second fingerprint information set corresponding to a right finger of the user, and the step of comparing the acquired fingerprint information with the pre-stored fingerprint information further comprises:
judging the type of the touch operation, wherein the type comprises a left finger touch operation and a right finger touch operation;
the step of comparing the acquired fingerprint information with pre-stored fingerprint information comprises:
when the touch operation is a left finger touch operation, comparing the acquired fingerprint information with the first fingerprint information group;
and when the touch operation is right finger touch operation, comparing the acquired fingerprint information with the second fingerprint information group.
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