CN110795718A - Fingerprint response method and electronic equipment - Google Patents

Fingerprint response method and electronic equipment Download PDF

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Publication number
CN110795718A
CN110795718A CN201911047336.2A CN201911047336A CN110795718A CN 110795718 A CN110795718 A CN 110795718A CN 201911047336 A CN201911047336 A CN 201911047336A CN 110795718 A CN110795718 A CN 110795718A
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China
Prior art keywords
touch
touch signal
screen
fingerprint
preset value
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CN201911047336.2A
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Chinese (zh)
Inventor
朱冰
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN201911047336.2A priority Critical patent/CN110795718A/en
Publication of CN110795718A publication Critical patent/CN110795718A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31User authentication
    • G06F21/32User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/1382Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger

Abstract

The embodiment of the invention discloses a fingerprint response method, electronic equipment and electronic equipment, wherein the method comprises the following steps: in the process of receiving fingerprint input of an operation body, acquiring a touch signal triggered by the operation body; executing a function corresponding to the fingerprint input under the condition that the touch signal meets a preset condition; wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value. According to the embodiment of the invention, when the fingerprint is input by the operation main body, the input fingerprint identification is carried out by using the touch signal, so that the accuracy of fingerprint response is improved.

Description

Fingerprint response method and electronic equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a fingerprint response method, an electronic device, and a readable storage medium.
Background
At present, fingerprint identification has been developed as an important identification technology in the field of biological identification, and is popularized in various industries, and with the popularization of a full-screen, the position of a fingerprint also moves to the lower part of a screen, and then, the fingerprint under the screen becomes the mainstream. While fingerprint identification is popular, corresponding attack means are more and more, for example: 2D printing, powder, inkpad, ghost shadow and other attacking means threaten fingerprint identification.
At present, image processing is mainly used for fingerprint identification, namely, acquired fingerprint images are analyzed, and whether the analyzed fingerprints are fingerprints of real users or not is judged according to certain parameters of the fingerprint images, so that the anti-counterfeiting purpose is achieved; however, in this way, a large amount of analysis needs to be performed on the real fingerprint image to find out the rule from the mass data, and the datamation difference between the real fingerprint and the fake fingerprint is summarized, so as to realize the anti-counterfeiting function, which is not easy to realize, and the anti-counterfeiting effect always lags behind the implementation manner of the fake fingerprint, and the datamation difference between the real fingerprint and the fake fingerprint needs to be updated and analyzed frequently.
Therefore, the accuracy of the fingerprint response caused by the fake fingerprint is low in the prior art.
Disclosure of Invention
The embodiment of the invention provides a fingerprint response method, electronic equipment and a readable storage medium, which aim to solve the technical problem of low fingerprint response accuracy in the prior art.
According to a first aspect of the embodiments of the present invention, there is provided a fingerprint response method applied in an electronic device, the method including:
in the process of receiving fingerprint input of an operation body, acquiring a touch signal triggered by the operation body;
executing a function corresponding to the fingerprint input under the condition that the touch signal meets a preset condition;
wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value.
In a second aspect of the embodiments of the present invention, an electronic device is provided, which is applied in the fingerprint response method, and includes:
the acquisition module is used for acquiring a touch signal triggered by an operation main body in the process of receiving the fingerprint input of the operation main body;
the execution module is used for executing a function corresponding to the fingerprint input under the condition that the touch signal meets a preset condition;
wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value.
According to a third aspect of the embodiments of the present invention, there is provided an electronic device, including a processor, a memory, and a computer program stored on the memory and operable on the processor, wherein the computer program, when executed by the processor, implements the steps of a fingerprint response method according to the present invention.
According to a fourth aspect of embodiments of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a fingerprint response method according to the present invention.
The embodiment of the invention provides a fingerprint response method, which comprises the steps of firstly, acquiring a touch signal triggered by an operation main body in the process of receiving fingerprint input of the operation main body; then, under the condition that the touch signal meets a preset condition, executing a function corresponding to the fingerprint input; according to the embodiment of the invention, when the fingerprint is input by the operation main body, the input fingerprint identification is carried out by using the touch signal, and the fingerprint is responded only when the condition is met because the acquired touch signal is directly used for carrying out the fingerprint identification of the operation main body, so that the fingerprint response accuracy is improved.
Drawings
FIG. 1 is a flowchart illustrating steps of a fingerprint response method according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of a fingerprint response method according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a touch signal distribution when a finger of a user just touches a touch screen according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a touch signal distribution during a process of a human finger contacting a touch screen according to an embodiment of the present invention;
figure 5 is a touch signal distribution diagram of a human finger fully contacting the touch screen in an embodiment of the invention,
fig. 6 is a block diagram of an electronic device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flowchart illustrating steps of a fingerprint response method provided in an embodiment of the present invention is shown, and applied to an electronic device, the method may specifically include the following steps:
step 101, in the process of receiving the fingerprint input of an operation body, acquiring a touch signal triggered by the operation body.
In the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
In the embodiment of the invention, in the process of inputting the fingerprint by the operation body, the touch screen detects that an object approaches, so that the touch screen acquires the touch signal triggered by the operation body. The operation body can be a finger of a person or a tool disguised as the finger, and the tool disguised as the finger is understood to have a fake fingerprint. The counterfeit fingerprints may include fingerprints made using 2D printing, powder, ink paste, ghost, and other attacking means. In the process of receiving the fingerprint input of the operation body, the touch signal triggered when the operation body is a human finger and the touch signal triggered when the tool disguised as the finger is utilized have different characteristic information, so that the fingerprint response can be carried out more quickly and accurately by judging the preset characteristic information or the preset characteristic information.
102, executing a function corresponding to the fingerprint input under the condition that the touch signal meets a preset condition;
wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value. And when the touch signal does not meet any one of the preset conditions, determining that the fingerprint is a pseudo fingerprint. In practical application, when at least two of the 4 conditions exist, the judgment can be performed in sequence, and when one preset condition is not judged to be satisfied, the input fingerprint is determined to be a pseudo fingerprint, and then the user can be prompted that the input fingerprint is wrong.
In the embodiment of the present invention, the function corresponding to the fingerprint input may be to determine that the fingerprint of the operation object is a true fingerprint, and enter an operation interface of the electronic device. According to the embodiment of the invention, under the condition that the touch signal meets the preset condition, the function corresponding to the fingerprint input is executed. The preset condition may include at least one of that the number of touch points of the touch signal on the screen is smaller than a first preset value, that the moving position of the touch signal on the screen is smaller than a second preset value, that the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and that the strength of the touch signal is greater than a third preset value and smaller than a fourth preset value. And when the preset condition comprises one or more of the above conditions and the touch signal conforms to the preset condition, executing a function corresponding to the fingerprint input.
In practical application, the number of touch points of the touch signal on the screen is a positive integer.
As an example, when the preset condition is that the number of touch points of the touch signal on the screen is less than a first preset value, optionally, the first preset value may be 2. It is understood that when the number of touch points of the touch signal on the screen is 1, a function corresponding to the fingerprint input is performed. And otherwise, when the number of the touch points is more than or equal to 2, the fingerprint is determined to be a pseudo fingerprint.
As another example, when the preset condition is that the touch signal intensity is greater than the third preset value and less than the fourth preset value, optionally, the touch signal intensity is greater than 200 db mw and less than 300 db mw. It is understood that when the touch signal intensity is more than 200 db mw and less than 300 db mw, a function corresponding to the fingerprint input is performed. Otherwise, the fingerprint is confirmed to be a fake fingerprint, and the response to the fingerprint input is abandoned.
As another example, when the preset condition is: the number of touch points of the touch signal on the screen is smaller than a first preset value, and the moving position of the touch signal on the screen is smaller than a second preset value. Optionally, the first preset value may be 2, and the second preset value is 20 pixel values. It is understood that when the number of touch points of the touch signal on the screen is 1 and the moving position of the touch signal on the screen is less than 20 pixel values, a function corresponding to the fingerprint input is performed. Otherwise, the fingerprint is confirmed to be a fake fingerprint, and the response to the fingerprint input is abandoned.
As another example, when the preset condition is: when the preset conditions are as follows: the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is greater than a third preset value and less than a fourth preset value. Optionally, the touch signal intensity is greater than 200 db mw and less than 300 db mw. It can be understood that when the area of the touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, the signal intensity of the central area in the touch area is kept strongest, and the touch signal intensity is greater than 200 db mw and less than 300 db mw, the function corresponding to the fingerprint input is performed. Otherwise, the fingerprint is confirmed to be a fake fingerprint, and the response to the fingerprint input is abandoned.
As another example, when the preset condition is: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, and the area of the touch signal on the screen is in direct proportion to the strength of the touch signal. Optionally, the first preset value may be 2, and the second preset value is 20 pixel values. It is understood that when the number of touch points of the touch signal on the screen is 1, the moving position of the touch signal on the screen is less than 20 pixel values, the area of a touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, and the intensity of the signal in the center area of the touch area is kept strongest, the function corresponding to the fingerprint input is executed. Otherwise, the fingerprint is confirmed to be a fake fingerprint, and the response to the fingerprint input is abandoned.
As an example, when the preset condition is: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value. Optionally, the first preset value may be 2, the second preset value is 20 pixel values, and the touch signal intensity is greater than 200 db mw and less than 300 db mw. It can be understood that when the number of touch points of the touch signal on the screen is 1, the moving position of the touch signal on the screen is less than 20 pixel values, and the intensity of the touch signal is greater than 200 db mw and less than 300 db mw, a function corresponding to the fingerprint input is performed. Otherwise, the fingerprint is confirmed to be a fake fingerprint, and the response to the fingerprint input is abandoned.
As another example, when the preset condition is: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value. Optionally, the first preset value may be 2, the second preset value is 20 pixel values, and the touch signal intensity is greater than 200 db mw and less than 300 db mw. It can be understood that when the number of touch points of the touch signal on the screen is 1, the moving position of the touch signal on the screen is less than 20 pixel values, the area of a touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, the signal intensity in the center area of the touch area is kept strongest, and the touch signal intensity is greater than 200 db mw and less than 300 db mw, the function corresponding to the fingerprint input is executed. Otherwise, the fingerprint is confirmed to be a fake fingerprint, and the response to the fingerprint input is abandoned.
As an alternative embodiment, step 102 may further include: acquiring characteristic information according to the touch signal; and under the condition that the characteristic information does not accord with the preset condition, determining that the currently identified operation subject is the pseudo fingerprint.
The characteristic information may be characteristic information of the touch signal. In the embodiment of the present invention, the characteristic information is obtained according to the touch signal, and the characteristic information of the signal to be detected may be obtained by analyzing the touch signal based on a physical device of the touch screen itself. As an example, the touch signal may be analyzed using a change in an electrical signal on a touch screen area. The characteristic information may be information related to the number of touch points generated during the touch process, information related to jitter generated during the touch process, information related to a contact area between the operation body and the screen during the touch process, and the like, which is not limited in the embodiment of the present invention. The embodiment of the invention acquires the characteristic information by using the physical device of the touch screen, and can fundamentally improve the accuracy of fingerprint anti-counterfeiting identification.
The preset condition is that the target characteristic information accords with characteristic information of a pressing signal triggered by a real finger. Wherein the real finger indicates that the real finger is not a fake finger but a real finger on the touch screen, such as a finger made of a certain material, such as plastic, inkpad, etc., or that other media, such as powder, glue, etc., exist between the real finger and the screen.
In the embodiment of the invention, the electronic equipment is preset with the characteristic information of the human finger in the fingerprint identification process, and the preset condition is that the characteristic information accords with the characteristic information of the human finger in the fingerprint identification process. Whether the operation subject is a pseudo fingerprint may be determined using correspondence between characteristic information of a human finger and the characteristic information. Specifically, when one piece of feature information in the feature information does not conform to the feature information of the corresponding human finger, it may be determined that the currently identified operation subject is a pseudo fingerprint. That is, only when all of the feature information matches the feature information of the corresponding human finger, a recognition result that the operating subject may not be a pseudo fingerprint is given. Therefore, the embodiment of the invention utilizes a plurality of dimensions to perform fingerprint anti-counterfeiting, and improves the accuracy of fingerprint response.
The embodiment of the invention provides a fingerprint response method, which comprises the steps of firstly obtaining a touch signal triggered by an operation main body, then obtaining characteristic information according to the touch signal, and finally determining the currently identified operation main body as a pseudo fingerprint according to the characteristic information. The embodiment of the invention identifies the pseudo fingerprint when the operation main body is operated, thereby improving the speed of anti-counterfeiting detection in the fingerprint identification process.
In another embodiment, referring to fig. 2, a fingerprint response method is disclosed, the method comprising:
step 201, in the process of receiving the fingerprint input of the operation subject, acquiring a touch signal triggered by the operation subject.
In the embodiment of the present invention, the step is the same as step 101, and for comparison, the description is omitted.
Step 2021, acquiring the area of the touch signal on the screen and the strength of the touch signal according to the touch signal.
In the embodiment of the present invention, the step may be understood as acquiring a signal variation trend in the touch screen area according to the touch screen signal.
When the operation main body is a human finger, the contact area between the operation main body and the touch screen is larger and larger, the touch signal acquired by the touch screen is stronger and stronger, and the strength of the touch signal in the middle area of the touch screen is strongest. As an example, referring to fig. 3 to 5, where fig. 3 is a touch signal distribution diagram when a human finger just touches the touch screen, fig. 4 is a touch signal distribution diagram when the human finger touches the touch screen, and fig. 5 is a touch signal distribution diagram when the human finger completely touches the touch screen, the touch signal can be clearly obtained, and in the process that the human finger touches the touch screen, the larger the contact area between the human finger and the touch screen is originally, the stronger the touch signal is, and the strongest the touch signal is in the middle area of the touch area. And when the touch signal meets the conditions that the contact area between the operation main body and the touch screen is larger and larger, the touch signal acquired by the touch screen is stronger and the strength of the touch signal in the middle area in the touch area of the touch screen is strongest, determining that the operation main body is the true fingerprint, and further executing the function corresponding to the fingerprint input.
Step 2031, determining that the currently identified object is a pseudo fingerprint when the variation trend of the touch signal does not satisfy the condition that the area of the touch area is gradually increased, or the intensity of the signal in the touch area is gradually increased, or the intensity of the central area of the touch area is kept strongest.
In the embodiment of the present invention, the signal change trend of the human finger in the touch screen area is obtained by referring to the signal change trend of the human finger in the touch screen area, where the signal change trend of the human finger in the touch screen area is that the area of the touch area is gradually increased, the intensity of the signal in the touch area is gradually increased, and the signal intensity in the center area of the touch area is not kept strongest. When the touch signal acquired according to the operation subject does not meet one of the conditions that the area of the touch area is gradually increased, the intensity of the signal in the touch area is gradually increased, and the signal intensity of the middle area of the touch area is kept the strongest, determining that the identified operation subject is a pseudo fingerprint; and conversely, when the area of the touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, and the signal intensity of the central area in the touch area is kept strongest, the fingerprint cannot be determined to be a pseudo fingerprint, and other operations can be performed. According to the embodiment of the invention, a plurality of conditions are set to determine whether the operation subject is the pseudo fingerprint, and when the operation subject does not meet one of the conditions, the operation subject is determined to be the pseudo fingerprint, so that the accuracy of fingerprint response is improved.
Step 2022, acquiring the signal intensity in the touch screen area according to the touch signal.
In the embodiment of the invention, when a finger of a person touches the touch screen area, the signal intensity of the acquired touch signal is distributed in a range, and the range is determined according to an actual touch screen object device. For example, the signal strength of a human finger ranges from [200,300] in dbm (decibel milliwatts). If other tools disguised as fingers are used for touch, the signal intensity ranges of the touch signals are different, and the embodiment of the invention can reduce the complexity of fingerprint response by setting the signal intensity of the touch signals to identify the fake fingerprints.
Step 2032, determining that the currently identified object is a pseudo fingerprint when the intensity of the touch signal is greater than the third preset value and less than the fourth preset value.
In the embodiment of the invention, the acquired touch screen area is provided with a plurality of positions, each position corresponds to different signal intensity, and when the signal intensity of one position in the touch screen area is not within a preset signal intensity range, the identified operation subject is determined to be a pseudo fingerprint. Optionally, the preset signal intensity range is the aforementioned human finger signal intensity distribution range. For example, when the signal intensity distribution of a human finger is [200 db mw, 300 db mw ], the signal intensity at a location of the touch screen area is 243 db mw. And the signal at the other location is 174 db mw, the subject of operation is determined to be a pseudo fingerprint. On the contrary, when the signal intensity is within [200 db mw, 300 db mw ], other conditions may be continuously used to determine whether the current operation object is a pseudo fingerprint. According to the embodiment of the invention, the signal intensity of each position in the touch screen area is compared with the preset signal intensity range to identify the pseudo fingerprint, so that the accuracy of fingerprint response is improved.
Step 2023, obtaining the moving position of the touch signal according to the touch signal.
In the embodiment of the invention, a human finger slightly shakes and displaces in the touch process, the moving position is smaller than M pixl (pixels) in the X-axis direction and the Y-axis direction, and the specific M is determined by combining the specific touch screen precision and the screen characteristics. Wherein, X axle, Y axle can set up according to actual demand, for example the long limit direction of screen is the X axle, and the broadside direction is the Y axle. As a specific example, a human finger touch process, the X, Y axis direction jitter would be within 20pixl, and if it exceeds 20pixl, it would be a non-true finger. According to the embodiment of the invention, the shaking range of the touch signal generated by the operation main body can be simply and quickly acquired through a physical device of the touch screen, the pseudo fingerprint can be identified by utilizing the shaking range, the identification speed of the pseudo fingerprint can be improved, and the moving position of the generated touch signal generated by the operation main body is set to identify the operation main body because the moving position of the human finger is in a fixed range in the touch process, so that the accuracy of pseudo fingerprint response can be improved.
Step 2033, determining that the currently identified object is a pseudo fingerprint if the moving position of the touch signal on the screen is greater than or equal to a second preset value.
In the embodiment of the present invention, the preset moving position may be a moving position generated by the human finger in the touch process, and specifically may be smaller than M pixs in the X-axis and Y-axis directions. Optionally, when the electronic device is a mobile phone, it is determined that the preset moving positions are smaller than 20pixl in the directions of the X axis and the Y axis. It can be understood that, when the touch screen accuracy and the screen feature of the electronic device are different, the preset moving position may also be different. As an example, when the touch signal movement position generated by the operation body is 24 pixl, it is determined that the currently recognized object is a pseudo fingerprint, whereas if the touch signal movement position is within 20pixl, other fingerprint recognition processes may be performed. According to the embodiment of the invention, the currently identified object is determined to be the pseudo fingerprint according to the relation between the moving position generated by the human finger in the touch process and the moving position of the touch signal, so that the identification complexity is reduced, and the accuracy of fingerprint response is improved because the moving position has a specific numerical range.
Step 2024, acquiring the number of touch points on the screen according to the touch signal.
In the embodiment of the invention, in the process of touching by a human finger, the number of the touch points in the touch signal is detected to be 1. According to the embodiment of the invention, the number of the touch points in the touch signal generated by the operation body is compared with the number of the touch points generated by the human finger, so that the pseudo fingerprint identification of the operation body can be carried out, and the identification complexity is reduced.
Step 2034, determining that the currently identified object is a pseudo fingerprint when the number of the touch points is greater than or equal to the first preset value.
In the embodiment of the invention, the target characteristic information includes the number of touch points, the moving position of the touch signal on the screen, the relative change trend of the area of the touch signal on the screen and the strength of the touch signal, and the strength of the touch signal in the touch screen area. Through the above steps, when the identification object determined by any one of the feature information is the pseudo fingerprint, the identification object is determined to be the pseudo fingerprint.
As a specific example, the following table shows:
means of attack Feature 1 Feature 2 Feature 3 Feature 4 Results
2D printing Satisfy the requirement of Satisfy the requirement of Not meet the requirements of Not meet the requirements of Dummy feature
Powder of Satisfy the requirement of Satisfy the requirement of Not meet the requirements of Not meet the requirements of Dummy feature
Inkpad Satisfy the requirement of Satisfy the requirement of Not meet the requirements of Not meet the requirements of Dummy feature
Residual shadow Not meet the requirements of Not meet the requirements of Not meet the requirements of Not meet the requirements of Dummy feature
In the above table, feature 1: the number of touch points of the touch signal on the screen is smaller than a first preset value;
and (2) feature: the moving position of the touch signal on the screen is smaller than a second preset value;
and (3) feature: the area of a touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, and the signal intensity of the central area in the touch area is kept strongest.
And (4) feature: the strength of the touch signal is greater than a third preset value and smaller than a fourth preset value. It can be seen that for different pseudo-fingerprint attacks, a pseudo-fingerprint attack is determined to be a pseudo-fingerprint when its features do not satisfy any of features 1-4. Note that the touch signal indicating the real human finger satisfies the above-described 4 features.
When any one of the characteristics 1-4 is not satisfied, the identified fingerprint is confirmed to be a pseudo fingerprint, the fingerprint response process can be finished, and the user can be prompted that the fingerprint response fails. Certainly, after the number of times of fingerprint response failure exceeds the threshold, the front camera of the electronic device can be opened, a shot picture is uploaded to a designated server, and an alarm short message can be sent to a mobile terminal bound to the electronic device to alarm.
Step 203, when the number of the touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, the signal intensity of the central area in the touch area is kept strongest, and the intensity of the touch signal is greater than a third preset value and smaller than a fourth preset value, executing a function corresponding to the fingerprint input.
Optionally, when the feature information of the operation subject satisfies the conditions of the features 1 to 4, executing a function corresponding to the fingerprint input, such as unlocking a screen, making payment, opening a preset interface, and the like.
Alternatively, when the characteristic information of the operating body satisfies the conditions of the characteristics 1 to 4, which indicate that the pseudo fingerprint is not recognized by using the characteristic information of the touch signal, a fingerprint image in a process of receiving the fingerprint input of the operating body by fingerprint recognition is acquired, and whether the recognition object is the pseudo fingerprint is determined by using the fingerprint image. If in this case, if it is determined using the fingerprint image that the recognition operation subject is a pseudo fingerprint, the fingerprint response fails; if the fingerprint image is used for determining that the operation subject is the true fingerprint, the fingerprint response is successful, and subsequent operations such as unlocking the screen, paying and the like can be performed.
As an example, the preset feature information of the fingerprint image may be set first, and then the acquired fingerprint image may be subjected to image processing, which may be: eliminating the noise of the fingerprint image, carrying out binarization on the fingerprint image, refining the fingerprint image, extracting characteristic information from the fingerprint image after image processing, matching the characteristic information with preset characteristic information, if the characteristic information cannot be completely matched with the preset characteristic information, determining that the operation subject is a pseudo fingerprint, otherwise, determining that the operation subject is a finger fingerprint of a person. The embodiment of the invention can improve the accuracy of fingerprint response by combining the fingerprint image to identify the pseudo fingerprint.
The embodiment of the invention identifies the pseudo fingerprint when the operation main body operates, thereby improving the speed of anti-counterfeiting detection.
It should be noted that the foregoing method embodiments are described as a series of acts or combinations for simplicity in explanation, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts or acts described, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 6, there is shown an electronic device 300 of an embodiment of the invention, the system comprising:
an obtaining module 301, configured to obtain a touch signal triggered by an operating body in a process of receiving a fingerprint input of the operating body;
an executing module 302, configured to execute a function corresponding to the fingerprint input when the touch signal meets a preset condition;
wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value.
Optionally, the number of touch points of the touch signal on the screen is a first preset value, and the method includes:
the number of touch points of the touch signal on the screen is 1.
Optionally, the moving position of the touch signal on the screen is smaller than a second preset value, including:
the moving position of the touch signal on the screen is less than 20 pixel values.
Optionally, the area of the touch signal on the screen is proportional to the touch signal strength, including:
the area of a touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, and the signal intensity of the central area of the touch area is kept strongest.
Optionally, the step of determining that the strength of the touch signal is greater than a third preset value and less than a fourth preset value includes:
the touch signal intensity is greater than 200 db mw and less than 300 db mw.
The embodiment of the invention provides electronic equipment, which comprises the following steps that firstly, in the process of receiving fingerprint input of an operation main body, a touch signal triggered by the operation main body is obtained; then, under the condition that the touch signal meets a preset condition, executing a function corresponding to the fingerprint input; according to the embodiment of the invention, when the fingerprint is input by the operation main body, the input fingerprint identification is carried out by using the touch signal, the speed of fingerprint identification is improved because the speed of touch signal identification is high and a complex image identification process is not required, and the accuracy of fingerprint response is improved because the acquired touch signal is directly used for the operation main body fingerprint identification.
The electronic device provided in the embodiment of the present invention can implement each process implemented in the method embodiments of fig. 1 to fig. 2, and is not described herein again to avoid repetition.
Figure 7 is a schematic diagram of a hardware configuration of an electronic device implementing various embodiments of the invention,
the electronic device 500 includes, but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, and a power supply 511. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 7 does not constitute a limitation of the electronic device, and that the electronic device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 510 is configured to acquire a touch signal triggered by an operation subject in a process of receiving a fingerprint input of the operation subject; executing a function corresponding to the fingerprint input under the condition that the touch signal meets a preset condition; wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value
The embodiment of the invention provides electronic equipment, which comprises the following steps that firstly, in the process of receiving fingerprint input of an operation main body, a touch signal triggered by the operation main body is obtained; then, under the condition that the touch signal meets a preset condition, executing a function corresponding to the fingerprint input; according to the embodiment of the invention, when the fingerprint is input by the operation main body, the input fingerprint identification is carried out by using the touch signal, the speed of fingerprint identification is improved because the speed of touch signal identification is high and a complex image identification process is not required, and the accuracy of fingerprint response is improved because the acquired touch signal is directly used for the operation main body fingerprint identification.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 501 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 510; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 501 can also communicate with a network and other devices through a wireless communication system.
The electronic device provides wireless broadband internet access to the user via the network module 502, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.
The audio output unit 503 may convert audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into an audio signal and output as sound. Also, the audio output unit 503 may also provide audio output related to a specific function performed by the electronic apparatus 500 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.
The input unit 504 is used to receive an audio or video signal. The input Unit 504 may include a Graphics Processing Unit (GPU) 1041 and a microphone 5042, and the Graphics processor 7041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 506. The image frames processed by the graphic processor 5041 may be stored in the memory 509 (or other storage medium) or transmitted via the radio frequency unit 501 or the network module 502. The microphone 5042 may receive sounds and may be capable of processing such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 501 in case of the phone call mode.
The electronic device 500 also includes at least one sensor 505, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 5061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 5061 and/or a backlight when the electronic device 500 is moved to the ear. As one type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of an electronic device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 505 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 506 is used to display information input by the user or information provided to the user. The Display unit 706 may include a Display panel 5061, and the Display panel 5061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 507 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic device. Specifically, the user input unit 507 includes a touch panel 5071 and other input devices 5072. Touch panel 5071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 5071 using a finger, stylus, or any suitable object or attachment). The touch panel 5071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 510, and receives and executes commands sent by the processor 510. In addition, the touch panel 5071 may be implemented in various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 5071, the user input unit 507 may include other input devices 5072. In particular, other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
Further, the touch panel 5071 may be overlaid on the display panel 5061, and when the touch panel 5071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 510 to determine the type of the touch event, and then the processor 510 provides a corresponding visual output on the display panel 5061 according to the type of the touch event. Although in fig. 7, the touch panel 5071 and the display panel 5061 are two independent components to implement the input and output functions of the electronic device, in some embodiments, the touch panel 5071 and the display panel 5061 may be integrated to implement the input and output functions of the electronic device, and is not limited herein.
The interface unit 508 is an interface for connecting an external device to the electronic apparatus 500. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 508 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the electronic apparatus 500 or may be used to transmit data between the electronic apparatus 500 and external devices.
The memory 509 may be used to store software programs as well as various data. The memory 509 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 509 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The processor 510 is a control center of the electronic device, connects various parts of the whole electronic device by using various interfaces and lines, performs various functions of the electronic device and processes data by running or executing software programs and/or modules stored in the memory 509 and calling data stored in the memory 509, thereby performing overall monitoring of the electronic device. Processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 510.
The electronic device 500 may further include a power supply 511 (e.g., a battery) for supplying power to various components, and preferably, the power supply 511 may be logically connected to the processor 510 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system.
In addition, the electronic device 500 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides an electronic device, which includes a processor 510, a memory 509, and a computer program that is stored in the memory 509 and can be run on the processor 510, and when the computer program is executed by the processor 710, the processes of the fingerprint response method embodiment described above are implemented, and the same technical effect can be achieved, and details are not described here to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the fingerprint response method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
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.
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 (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (11)

1. A fingerprint response method is applied to an electronic device, and is characterized by comprising the following steps:
the method comprises the steps that in the process of receiving fingerprint input of an operation main body, a touch signal triggered by the operation main body is obtained;
executing a function corresponding to the fingerprint input under the condition that the touch signal meets a preset condition;
wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value.
2. The method of claim 1, wherein the number of touch points of the touch signal on the screen is less than a first preset value, and the method comprises:
the number of touch points of the touch signal on the screen is 1.
3. The method of claim 1, wherein the moving position of the touch signal on the screen is smaller than a second preset value, comprising:
the moving position of the touch signal on the screen is less than 20 pixel values.
4. The method of claim 1, wherein the area of the touch signal on the screen is proportional to the touch signal strength, comprising:
the area of a touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, and the signal intensity of the central area of the touch area is kept strongest.
5. The method of claim 1, wherein: the strength of the touch signal is greater than a third preset value and less than a fourth preset value, and the method comprises the following steps:
the touch signal intensity is greater than 200 db mw and less than 300 db mw.
6. An electronic device, comprising:
the acquisition module is used for acquiring a touch signal triggered by an operation main body in the process of receiving the fingerprint input of the operation main body;
the execution module is used for executing a function corresponding to the fingerprint input under the condition that the touch signal meets a preset condition;
wherein the preset condition comprises at least one of the following: the number of touch points of the touch signal on the screen is smaller than a first preset value, the moving position of the touch signal on the screen is smaller than a second preset value, the area of the touch signal on the screen is in direct proportion to the strength of the touch signal, and the strength of the touch signal is larger than a third preset value and smaller than a fourth preset value.
7. The electronic device of claim 6, wherein the number of touch points of the touch signal on the screen is smaller than a first preset value, and the method comprises:
the number of touch points of the touch signal on the screen is 1.
8. The electronic device of claim 6, wherein the moving position of the touch signal on the screen is smaller than a second preset value, and the moving position comprises:
the moving position of the touch signal on the screen is less than 20 pixel values.
9. The electronic device of claim 6, wherein the area of the touch signal on the screen is proportional to the strength of the touch signal, and comprises:
the area of a touch area corresponding to the touch signal is gradually increased, the intensity of the signal in the touch area is gradually increased, and the signal intensity of the central area of the touch area is kept strongest.
10. The electronic device of claim 6, wherein the touch signal strength is greater than a third preset value and less than a fourth preset value, comprising:
the touch signal intensity is greater than 200 db mw and less than 300 db mw.
11. An electronic device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of a fingerprint response method according to any one of claims 1 to 5.
CN201911047336.2A 2019-10-30 2019-10-30 Fingerprint response method and electronic equipment Pending CN110795718A (en)

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