CN111860037A - Calibration method and device for fingerprint acquisition area - Google Patents
Calibration method and device for fingerprint acquisition area Download PDFInfo
- Publication number
- CN111860037A CN111860037A CN201910340492.1A CN201910340492A CN111860037A CN 111860037 A CN111860037 A CN 111860037A CN 201910340492 A CN201910340492 A CN 201910340492A CN 111860037 A CN111860037 A CN 111860037A
- Authority
- CN
- China
- Prior art keywords
- fingerprint
- acquisition area
- calibration
- information
- fingerprint acquisition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000004044 response Effects 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
Abstract
The disclosure relates to a calibration method and device for a fingerprint acquisition area. The method comprises the following steps: controlling a fingerprint sensor to collect fingerprints in a reference fingerprint collection area for N times to obtain N fingerprint images, and determining calibration information for calibrating the reference fingerprint collection area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, wherein the calibration information is used for indicating the offset condition of the reference fingerprint collection area; and adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen. This technical scheme can make the user input fingerprint information in more accurate position, avoids the inaccurate problem that appears the fingerprint and use the difficulty of fingerprint input position.
Description
Technical Field
The disclosure relates to the technical field of terminals, in particular to a calibration method and device for a fingerprint acquisition area.
Background
The light sensation screen fingerprint identification technology is a screen fingerprint identification technology, namely, a fingerprint identification module is placed under a terminal screen panel, when a fingerprint image is collected by the fingerprint identification module, incident light emitted by a light source penetrates through the panel to irradiate the fingertip of a user, and a fingerprint image with high contrast and distinct black and white is received by utilizing the phenomena of total reflection and diffuse reflection. Today of comprehensive screen circulation, the fingerprint identification technology under the screen can reduce terminal screen trompil, brings higher screen to account for than for the terminal screen.
Disclosure of Invention
The embodiment of the disclosure provides a calibration method and device for a fingerprint acquisition area. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a calibration method for a fingerprint acquisition area, including:
when the fingerprint acquisition area is calibrated, displaying a reference fingerprint icon, wherein the reference fingerprint icon is used for indicating a reference fingerprint acquisition area of the fingerprint sensor on a screen;
controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain N fingerprint images, wherein N is an integer greater than or equal to 1;
determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, wherein the calibration information is used for indicating the offset condition of the reference fingerprint acquisition area;
and adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen.
In one embodiment, the determining calibration information for calibrating the reference fingerprint acquisition area according to the position of the area occupied by the fingerprint in the N fingerprint images includes:
Determining N pieces of offset information of the reference fingerprint acquisition area according to position information of areas occupied by the fingerprints in the N fingerprint images, wherein the offset information comprises offset distance and offset direction;
and determining the calibration information for calibrating the reference fingerprint acquisition area as the average value of the N pieces of offset information.
In one embodiment, the determining N offset information of the reference fingerprint acquisition area according to the position information of the area occupied by the fingerprint in the N fingerprint images includes:
for each fingerprint image, determining center offset information between the center position of the fingerprint image and the center position of the area occupied by the fingerprint;
determining twice the center offset information as offset information of the reference fingerprint acquisition area.
In one embodiment, the method further comprises:
and when the reference fingerprint icon is displayed, displaying prompt information, wherein the prompt information is used for prompting a user that the reference fingerprint acquisition area is filled with fingerprints.
In one embodiment, the method further comprises:
receiving a calibration instruction, wherein the calibration instruction is used for instructing to calibrate a fingerprint acquisition area;
in response to the received calibration instruction, fingerprint acquisition area calibration is started.
According to a second aspect of the embodiments of the present disclosure, there is provided a calibration apparatus for a fingerprint acquisition area, including:
the fingerprint sensor comprises a first display module, a second display module and a control module, wherein the first display module is used for displaying a reference fingerprint icon when a fingerprint acquisition area is calibrated, and the reference fingerprint icon is used for indicating a reference fingerprint acquisition area of the fingerprint sensor on a screen;
the control module is used for controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain N fingerprint images, wherein N is an integer greater than or equal to 1;
a determining module, configured to determine calibration information for calibrating the reference fingerprint acquisition area according to a position of an area occupied by a fingerprint in the N fingerprint images, where the calibration information is used to indicate an offset condition of the reference fingerprint acquisition area;
and the calibration module is used for adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen.
In one embodiment, the first determining module comprises:
the first determining submodule is used for determining N pieces of offset information of the reference fingerprint acquisition area according to the position information of the area occupied by the fingerprint in the N fingerprint images, and the offset information comprises an offset distance and an offset direction;
And the second determining submodule is used for determining that the calibration information for calibrating the reference fingerprint acquisition area is the average value of the N pieces of offset information.
In one embodiment, the first determining sub-module is configured to determine, for each fingerprint image, center offset information between a center position of the fingerprint image and a center position of an area occupied by the fingerprint, and determine twice the center offset information as the offset information of the reference fingerprint acquisition area.
In one embodiment, the apparatus further comprises:
and the second display module is used for displaying prompt information when a reference fingerprint icon is displayed, and the prompt information is used for prompting that the reference fingerprint acquisition area is full of fingerprints of the user.
In one embodiment, the apparatus further comprises:
the device comprises a receiving module, a calibration module and a control module, wherein the receiving module is used for receiving a calibration instruction which is used for instructing to calibrate a fingerprint acquisition area;
and the response module is used for responding to the received calibration instruction and starting to calibrate the fingerprint acquisition area.
According to a third aspect of the embodiments of the present disclosure, there is provided a calibration apparatus for a fingerprint acquisition area, including:
a processor;
a memory for storing processor-executable instructions;
Wherein the processor is configured to perform the steps of the above method.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium storing computer instructions which, when executed by a processor, implement the steps in the above-mentioned method.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the embodiment can display a reference fingerprint icon when the fingerprint acquisition area is calibrated, wherein the reference fingerprint icon is used for indicating the reference fingerprint acquisition area of the fingerprint sensor on the screen; controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain a fingerprint image, wherein N is an integer greater than or equal to 1; determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, wherein the calibration information is used for indicating the offset condition of the reference fingerprint acquisition area; adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen; so, initiatively to the regional calibration of the collection of in-plane fingerprint, can make the user can be in more accurate position input fingerprint information, avoid the problem that the fingerprint was used the difficulty to inaccurate appearance of fingerprint input position.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flow chart illustrating a method of calibrating a fingerprint acquisition area according to an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating a fingerprint image according to an exemplary embodiment.
Fig. 3 is a flow chart illustrating a method of calibrating a fingerprint acquisition area according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a fingerprint acquisition area calibration apparatus according to an exemplary embodiment.
Fig. 5 is a block diagram illustrating a fingerprint acquisition area calibration apparatus according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a fingerprint acquisition area calibration apparatus according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating a fingerprint acquisition area calibration apparatus according to an exemplary embodiment.
Fig. 8 is a block diagram illustrating a fingerprint acquisition area calibration apparatus according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
At present, when a fingerprint is collected by an off-screen fingerprint, a screen is required to display a fingerprint icon to prompt a user to press the fingerprint in a collection area indicated by the fingerprint icon, the accuracy of the position of the collection area indicated by the fingerprint icon determines the experience feeling of using the fingerprint, the position indicated by the fingerprint icon of each terminal in the same product type is fixed, namely the target position set during factory assembly, but due to the difference of manual assembly, particularly the difference of assembly during after-sales maintenance, the correct position of the off-screen fingerprint may be caused to have a certain difference with the target position,
in order to solve the above problem, the present embodiment may display a reference fingerprint icon for indicating a reference fingerprint acquisition area of the fingerprint sensor on the screen when performing fingerprint acquisition area calibration; controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain a fingerprint image, wherein N is an integer greater than or equal to 1; determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, wherein the calibration information is used for indicating the offset condition of the reference fingerprint acquisition area; adjusting the position of the reference fingerprint acquisition area on a screen according to the calibration information of the reference fingerprint acquisition area to obtain a calibrated fingerprint acquisition area; displaying a calibration icon on the calibrated fingerprint acquisition area, wherein the calibration icon is used for indicating the position of the calibrated fingerprint acquisition area on the screen; so, initiatively to the regional calibration of the collection of in-plane fingerprint, can make the user can be in more accurate position input fingerprint information, avoid the problem that the fingerprint was used the difficulty to inaccurate appearance of fingerprint input position.
Fig. 1 is a flowchart illustrating a calibration method for a fingerprint collection area according to an exemplary embodiment, where as shown in fig. 1, the calibration method for a fingerprint collection area is used in a terminal, and includes the following steps 101 and 104:
in step 101, when performing fingerprint acquisition area calibration, a reference fingerprint icon indicating a reference fingerprint acquisition area of the fingerprint sensor on the screen is displayed.
Here, the position of the reference fingerprint icon displayed on the terminal screen at the time of factory shipment for indicating the reference fingerprint collection area is fixed, that is, the position set at the time of factory assembly, but due to the difference of manual assembly, there may be a certain deviation between the position of the correct collection area of the fingerprint sensor and the position of the reference fingerprint icon. Or, the difference of the assembly of the terminal during after-sales maintenance may also cause a certain offset between the position of the correct acquisition area of the fingerprint sensor after maintenance and the position of the reference fingerprint icon before maintenance, so that the terminal needs to calibrate the fingerprint acquisition area and correct the offset when the terminal is assembled in a factory and the whole device leaves the factory or the fingerprint sensor is replaced after sale.
Here, the terminal may display the reference fingerprint icon when performing the fingerprint acquisition area calibration, for example, the terminal may invoke a screen locking program to display a square icon on the screen, where the square icon is the reference fingerprint icon and indicates that the reference fingerprint acquisition area of the fingerprint sensor on the screen is the area where the square icon is located. In this way, the user can fill the reference fingerprint acquisition area with a fingertip, and input a fingerprint in the reference fingerprint acquisition area.
In step 102, the fingerprint sensor is controlled to perform N-time collection on the fingerprint in the reference fingerprint collection area to obtain N fingerprint images, where N is an integer greater than or equal to 1.
Here, the terminal can control the fingerprint sensor to collect the fingerprint in the reference fingerprint collection area while displaying the reference fingerprint icon, and when the user fingertip presses the reference fingerprint collection area, the terminal can collect the fingerprint image.
Here, the terminal may capture only one fingerprint image, but, in order to secure the accuracy of the subsequent correction, it is preferable that the terminal may capture a plurality of fingerprint images.
In step 103, determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, where the calibration information is used to indicate the offset of the reference fingerprint acquisition area.
Here, if the correct collecting area of the fingerprint sensor of the terminal is the reference fingerprint collecting area indicated by the reference fingerprint icon, the fingerprint image collected by the terminal is a fingerprint image full of fingerprints; if the correct collection area of the fingerprint sensor of the terminal is different from the reference fingerprint collection area indicated by the reference fingerprint icon, the fingerprint image collected by the terminal is a fingerprint image with a fingerprint occupying only a part, for example, fig. 2 is a schematic diagram of the fingerprint image according to an exemplary embodiment, as shown in fig. 2, the area 201 occupied by the fingerprint in the fingerprint image 20 is slightly above the left and only occupies a part of the fingerprint image, so that the difference between the correct collection area of the fingerprint sensor of the terminal and the reference fingerprint collection area indicated by the reference fingerprint icon is determined. At this time, the terminal may analyze and determine the offset between the reference fingerprint collection area and the correct collection area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, so as to obtain the calibration information.
In step 104, the position of the reference fingerprint collection area on the screen is adjusted according to the calibration information of the reference fingerprint collection area, so as to obtain the position of the calibrated fingerprint collection area on the screen.
Here, assuming that the terminal determines that the calibration information is that the reference fingerprint collection area is shifted leftward by L from the correct collection area, the terminal may adjust the position of the reference fingerprint collection area rightward by the distance of L, and the adjusted reference fingerprint collection area is the calibrated fingerprint collection area.
Here, after the terminal acquires the position of the calibrated fingerprint collection area on the screen, when a fingerprint collection instruction is received, and a user is required to input a fingerprint, if the fingerprint is unlocked, the terminal can display a calibration icon which is used for indicating the position of the calibrated fingerprint collection area on the screen, so that the user can input the fingerprint on the calibrated fingerprint collection area indicated by the calibration icon.
The embodiment can actively calibrate the acquisition area of the internal fingerprint, so that a user can input fingerprint information at a more accurate position, and the problem of difficulty in fingerprint use caused by inaccurate fingerprint input position is avoided.
In a possible implementation manner, the step 103 in the calibration method of the fingerprint acquisition area can be implemented as the following steps a1 and a 2.
In step a1, N offset information of the reference fingerprint acquisition area is determined according to the position information of the area occupied by the fingerprint in the N fingerprint images, where the offset information includes an offset distance and an offset direction.
In step a2, the calibration information for calibrating the reference fingerprint acquisition area is determined as the average of the N offset information.
Here, the terminal may determine the shift information of the reference fingerprint collection area according to the position information of the area occupied by the fingerprint in the fingerprint image, and still take the example shown in fig. 2 as an example, a rectangular coordinate system may be established with the upper left end point O of the fingerprint image 20 as the origin of coordinates, where the coordinates of point a are (x1, y1) and the coordinates of point B are (x2, y2), and the shift information is shifted leftward by x2-x1 and upward by y2-y 1.
Here, when the fingerprint sensor collects a fingerprint image, it cannot be guaranteed that the reference fingerprint collection area is just filled with a fingertip of the user, and at this time, in order to guarantee the accuracy of the calibration, the terminal may collect a plurality of fingerprint images, obtain a plurality of offset information, then calculate an average value of the N offset information, and determine calibration information of the reference fingerprint collection area, where the calibration information includes a calibration distance and a calibration direction. For example, the average of the left and right offsets may be calculated: (all left-shifted distances and-all right-shifted distances and)/N, a positive or 0 value of the average value indicates a left-shifted average value, and a negative value of the average value indicates a right-shifted average value; then the average of the shifts in the up-down direction is calculated: (sum of all up-shifted distances-sum of all down-shifted distances)/N, a positive or 0 value of the average indicates an up-shifted average value, and a negative value of the average indicates a down-shifted average value. In this way, the calibration distance and the calibration direction can be determined.
In this embodiment, N pieces of offset information of the reference fingerprint acquisition area may be determined according to position information of an area occupied by a fingerprint in the N fingerprint images, where the offset information includes an offset distance and an offset direction, and it is determined that calibration information for calibrating the reference fingerprint acquisition area is an average value of the N pieces of offset information, so that accurate calibration information may be obtained.
In a possible implementation manner, the step a2 in the calibration method of the fingerprint acquisition area can be implemented as the following steps a21 and a 22.
In step a21, for each fingerprint image, center offset information between the center position of the fingerprint image and the center position of the area occupied by the fingerprint is determined.
In step a22, twice the center offset information is determined as the offset information of the reference fingerprint acquisition area.
Here, still taking the example shown in fig. 2 as an example, a rectangular coordinate system may be established with the upper left end point O of the fingerprint image 20 as the origin of coordinates, the coordinates of the center position C of the fingerprint image 20 are (x2/2, y2/2), and the coordinates of the center position D of the area occupied by the fingerprint are (x1/2, y1/2), so that the center shift information is shifted leftward (x2-x1)/2 and upward (y2-y 1)/2. The terminal determines twice the center offset information as offset information of the reference fingerprint-collection area to be offset to the left by x2-x1 and offset to the up by y2-y 1.
The present embodiment may determine, for each fingerprint image, center offset information between a center position of the fingerprint image and a center position of an area occupied by the fingerprint; determining twice the center offset information as offset information of the reference fingerprint acquisition area; therefore, the determination method is simple and accurate.
In a possible implementation manner, the method for calibrating the fingerprint acquisition area may further include the following step B1.
In step B1, when the reference fingerprint icon is displayed, a prompt message for prompting the user that the reference fingerprint collection area is filled with fingerprints is displayed.
Here, only if the user fingerprint is full of the reference fingerprint acquisition area, the area occupied by the fingerprint in the fingerprint image is the area occupied by the reference fingerprint acquisition area in the correct fingerprint acquisition area, the offset information determined by the terminal is the accurate offset information, and the subsequent calibration performed according to the offset information is more accurate.
The embodiment can display prompt information when the reference fingerprint icon is displayed, and prompts a user that the fingerprint is full of the reference fingerprint acquisition area so as to ensure the accuracy of fingerprint acquisition area calibration.
In a possible implementation, the method for calibrating a fingerprint acquisition area may further include the following steps C1 and C2.
In step C1, a calibration instruction is received, the calibration instruction being used to instruct that fingerprint collection area calibration be performed.
In step C2, fingerprint acquisition area calibration is started in response to the received calibration instruction.
Here, the terminal may automatically start to perform fingerprint collection area calibration when it leaves a factory or after maintenance, of course, the user may also input a calibration instruction, and the terminal starts to perform fingerprint collection area calibration after receiving the calibration instruction.
In this embodiment, when the calibration instruction is received, the calibration of the fingerprint acquisition area is started in response to the received calibration instruction, so that the user can automatically start the calibration process when the calibration is needed.
The implementation is described in detail below by way of several embodiments.
Fig. 3 is a flowchart illustrating a method for calibrating a fingerprint collection area according to an exemplary embodiment, where the method for calibrating a fingerprint collection area, as shown in fig. 3, may be implemented by a terminal or the like, and includes steps 301 and 309.
In step 301, a calibration instruction is received, where the calibration instruction is used to instruct to perform fingerprint acquisition area calibration.
In step 302, fingerprint acquisition area calibration is started in response to the received calibration instruction.
In step 303, a reference fingerprint icon indicating a reference fingerprint collection area of the fingerprint sensor on the screen is displayed when the fingerprint collection area calibration is performed.
In step 304, when the reference fingerprint icon is displayed, prompt information is displayed, and the prompt information is used for prompting the user that the reference fingerprint collection area is filled with the fingerprint.
In step 305, the fingerprint sensor is controlled to perform N-time fingerprint acquisition on the reference fingerprint acquisition area to obtain N fingerprint images, where N is an integer greater than or equal to 1.
In step 306, for each fingerprint image, center offset information between the center position of the fingerprint image and the center position of the area occupied by the fingerprint is determined.
In step 307, twice the center offset information is determined as the offset information of the reference fingerprint acquisition area, the offset information comprising an offset distance and an offset direction.
In step 308, the calibration information for calibrating the reference fingerprint acquisition area is determined as an average value of the N offset information.
In step 309, the position of the reference fingerprint collection area on the screen is adjusted according to the calibration information of the reference fingerprint collection area, so as to obtain the position of the calibrated fingerprint collection area on the screen.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
Fig. 4 is a block diagram illustrating an apparatus for calibrating a fingerprint acquisition area, which may be implemented as part or all of an electronic device through software, hardware, or a combination thereof, according to an example embodiment. As shown in fig. 4, the calibration device for the fingerprint acquisition area comprises:
the first display module 401 is configured to display a reference fingerprint icon when a fingerprint acquisition area is calibrated, where the reference fingerprint icon is used to indicate a reference fingerprint acquisition area of a fingerprint sensor on a screen;
a control module 402, configured to control the fingerprint sensor to perform N-time acquisition on the fingerprint in the reference fingerprint acquisition area, so as to obtain N fingerprint images, where N is an integer greater than or equal to 1;
A determining module 403, configured to determine, according to positions of areas occupied by fingerprints in the N fingerprint images, calibration information for calibrating the reference fingerprint acquisition area, where the calibration information is used to indicate an offset condition of the reference fingerprint acquisition area;
a calibration module 404, configured to adjust a position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area, so as to obtain a position of the calibrated fingerprint acquisition area on the screen.
Optionally, in other embodiments, the calibration apparatus may further include a second display module, the first display module
The second display module is used for displaying a calibration icon, and the calibration icon is used for indicating the position of the calibrated fingerprint acquisition area on the screen.
As a possible embodiment, fig. 5 is a block diagram illustrating a calibration apparatus for a fingerprint acquisition area according to an exemplary embodiment, and as shown in fig. 5, the above-disclosed calibration apparatus for a fingerprint acquisition area may further configure the determination module 403 to include a first determination sub-module 4031 and a second determination sub-module 4032, wherein:
a first determining submodule 4031, configured to determine, according to position information of an area occupied by a fingerprint in the N fingerprint images, N pieces of offset information of the reference fingerprint acquisition area, where the offset information includes an offset distance and an offset direction;
A second determining sub-module 4032, configured to determine that the calibration information for calibrating the reference fingerprint acquisition area is an average value of the N offset information.
As a possible embodiment, in the calibration apparatus for a fingerprint collection area disclosed above, the first determining sub-module 4031 is configured to determine, for each fingerprint image, center offset information between a center position of the fingerprint image and a center position of an area occupied by the fingerprint, and determine twice the center offset information as the offset information of the reference fingerprint collection area.
As a possible embodiment, fig. 6 is a block diagram illustrating a calibration apparatus for a fingerprint acquisition area according to an exemplary embodiment, and as shown in fig. 6, the above-disclosed calibration apparatus for a fingerprint acquisition area may be further configured to include a second display module 405, wherein:
and a second display module 405, configured to display prompt information when the reference fingerprint icon is displayed, where the prompt information is used to prompt that the reference fingerprint acquisition area is full of fingerprints of the user.
As a possible embodiment, fig. 7 is a block diagram illustrating a calibration apparatus for a fingerprint capturing area according to an exemplary embodiment, and as shown in fig. 7, the above disclosed calibration apparatus for a fingerprint capturing area may be further configured to include a receiving module 406 and a responding module 407, where:
A receiving module 406, configured to receive a calibration instruction, where the calibration instruction is used to instruct to perform fingerprint acquisition area calibration;
a response module 407, configured to start performing fingerprint acquisition area calibration in response to the received calibration instruction.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 8 is a block diagram illustrating an apparatus for calibrating a fingerprint acquisition area, which is suitable for a terminal device according to an exemplary embodiment. For example, the apparatus 800 may be a mobile phone, a game console, a computer, a tablet device, a personal digital assistant, and the like.
The apparatus 800 may include one or more of the following components: a processing component 801, a memory 802, a power component 803, a multimedia component 804, an audio component 805, an input/output (I/O) interface 806, a sensor component 807, and a communication component 808.
The processing component 801 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 801 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 801 may include one or more modules that facilitate interaction between the processing component 801 and other components. For example, the processing component 801 may include a multimedia module to facilitate interaction between the multimedia component 804 and the processing component 801.
The memory 802 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 802 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 803 provides power to the various components of the device 800. The power components 803 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 800.
The multimedia component 804 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 804 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 805 is configured to output and/or input audio signals. For example, the audio component 805 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 802 or transmitted via the communication component 808. In some embodiments, the audio component 805 also includes a speaker for outputting audio signals.
The I/O interface 806 provides an interface between the processing component 801 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 807 includes one or more sensors for providing various aspects of condition assessment for the apparatus 800. For example, sensor assembly 807 may detect the open/closed state of device 800, the relative positioning of components such as a display and keypad of device 800, the change in position of device 800 or a component of device 800, the presence or absence of user contact with device 800, the orientation or acceleration/deceleration of device 800, and the change in temperature of device 800. Sensor assembly 807 may comprise a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 807 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 807 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 808 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 808 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 808 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 802 comprising instructions, executable by the processor 820 of the device 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium, wherein instructions when executed by a processor of the apparatus 800, enable the apparatus 800 to perform the above fingerprint acquisition area calibration method, the method comprising:
when the fingerprint acquisition area is calibrated, displaying a reference fingerprint icon, wherein the reference fingerprint icon is used for indicating a reference fingerprint acquisition area of the fingerprint sensor on a screen;
controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain N fingerprint images, wherein N is an integer greater than or equal to 1;
determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, wherein the calibration information is used for indicating the offset condition of the reference fingerprint acquisition area;
and adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen.
In one embodiment, the determining calibration information for calibrating the reference fingerprint acquisition area according to the position of the area occupied by the fingerprint in the N fingerprint images includes:
Determining N pieces of offset information of the reference fingerprint acquisition area according to position information of areas occupied by the fingerprints in the N fingerprint images, wherein the offset information comprises offset distance and offset direction;
and determining the calibration information for calibrating the reference fingerprint acquisition area as the average value of the N pieces of offset information.
In one embodiment, the determining N offset information of the reference fingerprint acquisition area according to the position information of the area occupied by the fingerprint in the N fingerprint images includes:
for each fingerprint image, determining center offset information between the center position of the fingerprint image and the center position of the area occupied by the fingerprint;
determining twice the center offset information as offset information of the reference fingerprint acquisition area.
In one embodiment, the method further comprises:
and when the reference fingerprint icon is displayed, displaying prompt information, wherein the prompt information is used for prompting a user that the reference fingerprint acquisition area is filled with fingerprints.
In one embodiment, the method further comprises:
receiving a calibration instruction, wherein the calibration instruction is used for instructing to calibrate a fingerprint acquisition area;
in response to the received calibration instruction, fingerprint acquisition area calibration is started.
This embodiment also provides a calibration device of fingerprint collection area, includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when the fingerprint acquisition area is calibrated, displaying a reference fingerprint icon, wherein the reference fingerprint icon is used for indicating a reference fingerprint acquisition area of the fingerprint sensor on a screen;
controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain N fingerprint images, wherein N is an integer greater than or equal to 1;
determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, wherein the calibration information is used for indicating the offset condition of the reference fingerprint acquisition area;
and adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen.
In one embodiment, the processor may be further configured to:
the determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images includes:
Determining N pieces of offset information of the reference fingerprint acquisition area according to position information of areas occupied by the fingerprints in the N fingerprint images, wherein the offset information comprises offset distance and offset direction;
and determining the calibration information for calibrating the reference fingerprint acquisition area as the average value of the N pieces of offset information.
In one embodiment, the processor may be further configured to:
the determining N pieces of offset information of the reference fingerprint acquisition area according to the position information of the area occupied by the fingerprint in the N fingerprint images includes:
for each fingerprint image, determining center offset information between the center position of the fingerprint image and the center position of the area occupied by the fingerprint;
determining twice the center offset information as offset information of the reference fingerprint acquisition area.
In one embodiment, the processor may be further configured to:
the method further comprises the following steps:
and when the reference fingerprint icon is displayed, displaying prompt information, wherein the prompt information is used for prompting a user that the reference fingerprint acquisition area is filled with fingerprints.
In one embodiment, the processor may be further configured to:
the method further comprises the following steps:
Receiving a calibration instruction, wherein the calibration instruction is used for instructing to calibrate a fingerprint acquisition area;
in response to the received calibration instruction, fingerprint acquisition area calibration is started.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A method for calibrating a fingerprint acquisition area, comprising:
when the fingerprint acquisition area is calibrated, displaying a reference fingerprint icon, wherein the reference fingerprint icon is used for indicating a reference fingerprint acquisition area of the fingerprint sensor on a screen;
Controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain N fingerprint images, wherein N is an integer greater than or equal to 1;
determining calibration information for calibrating the reference fingerprint acquisition area according to the positions of the areas occupied by the fingerprints in the N fingerprint images, wherein the calibration information is used for indicating the offset condition of the reference fingerprint acquisition area;
and adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen.
2. The method according to claim 1, wherein determining calibration information for calibrating the reference fingerprint acquisition area based on the position of the area occupied by the fingerprint in the N fingerprint images comprises:
determining N pieces of offset information of the reference fingerprint acquisition area according to position information of areas occupied by the fingerprints in the N fingerprint images, wherein the offset information comprises offset distance and offset direction;
and determining the calibration information for calibrating the reference fingerprint acquisition area as the average value of the N pieces of offset information.
3. The method according to claim 2, wherein the determining N offset information of the reference fingerprint acquisition area according to the position information of the area occupied by the fingerprint in the N fingerprint images comprises:
For each fingerprint image, determining center offset information between the center position of the fingerprint image and the center position of the area occupied by the fingerprint;
determining twice the center offset information as offset information of the reference fingerprint acquisition area.
4. The method of claim 1, further comprising:
and when the reference fingerprint icon is displayed, displaying prompt information, wherein the prompt information is used for prompting a user that the reference fingerprint acquisition area is filled with fingerprints.
5. The method of claim 1, further comprising:
receiving a calibration instruction, wherein the calibration instruction is used for instructing to calibrate a fingerprint acquisition area;
in response to the received calibration instruction, fingerprint acquisition area calibration is started.
6. A fingerprint acquisition area calibration device, comprising:
the fingerprint sensor comprises a first display module, a second display module and a control module, wherein the first display module is used for displaying a reference fingerprint icon when a fingerprint acquisition area is calibrated, and the reference fingerprint icon is used for indicating a reference fingerprint acquisition area of the fingerprint sensor on a screen;
the control module is used for controlling the fingerprint sensor to collect fingerprints in the reference fingerprint collection area for N times to obtain N fingerprint images, wherein N is an integer greater than or equal to 1;
A determining module, configured to determine calibration information for calibrating the reference fingerprint acquisition area according to a position of an area occupied by a fingerprint in the N fingerprint images, where the calibration information is used to indicate an offset condition of the reference fingerprint acquisition area;
and the calibration module is used for adjusting the position of the reference fingerprint acquisition area on the screen according to the calibration information of the reference fingerprint acquisition area to obtain the position of the calibrated fingerprint acquisition area on the screen.
7. The apparatus of claim 6, wherein the determining module comprises:
the first determining submodule is used for determining N pieces of offset information of the reference fingerprint acquisition area according to the position information of the area occupied by the fingerprint in the N fingerprint images, and the offset information comprises an offset distance and an offset direction;
and the second determining submodule is used for determining that the calibration information for calibrating the reference fingerprint acquisition area is the average value of the N pieces of offset information.
8. The apparatus of claim 7,
the first determining sub-module is configured to determine, for each fingerprint image, center offset information between a center position of the fingerprint image and a center position of an area occupied by the fingerprint, and determine twice the center offset information as offset information of the reference fingerprint acquisition area.
9. The apparatus of claim 6, further comprising:
and the second display module is used for displaying prompt information when a reference fingerprint icon is displayed, and the prompt information is used for prompting that the reference fingerprint acquisition area is full of fingerprints of the user.
10. The apparatus of claim 6, further comprising:
the device comprises a receiving module, a calibration module and a control module, wherein the receiving module is used for receiving a calibration instruction which is used for instructing to calibrate a fingerprint acquisition area;
and the response module is used for responding to the received calibration instruction and starting to calibrate the fingerprint acquisition area.
11. A fingerprint acquisition area calibration device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the steps of the method of any one of claims 1 to 5.
12. A computer readable storage medium storing computer instructions, wherein the computer instructions, when executed by a processor, implement the steps of the method of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340492.1A CN111860037A (en) | 2019-04-25 | 2019-04-25 | Calibration method and device for fingerprint acquisition area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340492.1A CN111860037A (en) | 2019-04-25 | 2019-04-25 | Calibration method and device for fingerprint acquisition area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111860037A true CN111860037A (en) | 2020-10-30 |
Family
ID=72951518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910340492.1A Pending CN111860037A (en) | 2019-04-25 | 2019-04-25 | Calibration method and device for fingerprint acquisition area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111860037A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335724A (en) * | 2015-10-30 | 2016-02-17 | 东莞酷派软件技术有限公司 | Window adjusting method and apparatus based on fingerprint identification, and terminal |
| CN106951884A (en) * | 2017-03-31 | 2017-07-14 | 北京小米移动软件有限公司 | Gather method, device and the electronic equipment of fingerprint |
| CN107102809A (en) * | 2017-04-20 | 2017-08-29 | 维沃移动通信有限公司 | A kind of fingerprint identification method and mobile terminal |
| CN107103304A (en) * | 2017-04-28 | 2017-08-29 | 维沃移动通信有限公司 | The display methods and mobile terminal in a kind of fingerprint recognition region |
| CN107278286A (en) * | 2017-04-25 | 2017-10-20 | 深圳市汇顶科技股份有限公司 | Determine the method and apparatus of the position of fingerprint prompting pattern in display screen |
| CN107678594A (en) * | 2017-09-30 | 2018-02-09 | 努比亚技术有限公司 | Calibration method, device, terminal device and the storage medium of touch screen |
| CN107728979A (en) * | 2017-09-30 | 2018-02-23 | 联想(北京)有限公司 | A kind of processing method and electronic equipment |
| CN107895143A (en) * | 2017-10-27 | 2018-04-10 | 维沃移动通信有限公司 | A kind of finger print information processing method, mobile terminal and computer-readable recording medium |
| CN108319836A (en) * | 2018-01-31 | 2018-07-24 | 北京小米移动软件有限公司 | The method and apparatus for executing processing based on fingerprint recognition |
| WO2018141119A1 (en) * | 2017-02-03 | 2018-08-09 | 华为技术有限公司 | Fingerprint acquisition method, apparatus, and terminal |
| CN108446663A (en) * | 2018-04-02 | 2018-08-24 | 北京小米移动软件有限公司 | fingerprint module setting method and device |
| CN108460352A (en) * | 2018-02-28 | 2018-08-28 | 北京小米移动软件有限公司 | The method and apparatus of fingerprint detection |
| CN109324863A (en) * | 2018-10-23 | 2019-02-12 | 北京小米移动软件有限公司 | The method, apparatus and computer readable storage medium of fingerprint recognition |
-
2019
- 2019-04-25 CN CN201910340492.1A patent/CN111860037A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335724A (en) * | 2015-10-30 | 2016-02-17 | 东莞酷派软件技术有限公司 | Window adjusting method and apparatus based on fingerprint identification, and terminal |
| WO2018141119A1 (en) * | 2017-02-03 | 2018-08-09 | 华为技术有限公司 | Fingerprint acquisition method, apparatus, and terminal |
| CN106951884A (en) * | 2017-03-31 | 2017-07-14 | 北京小米移动软件有限公司 | Gather method, device and the electronic equipment of fingerprint |
| CN107102809A (en) * | 2017-04-20 | 2017-08-29 | 维沃移动通信有限公司 | A kind of fingerprint identification method and mobile terminal |
| CN107278286A (en) * | 2017-04-25 | 2017-10-20 | 深圳市汇顶科技股份有限公司 | Determine the method and apparatus of the position of fingerprint prompting pattern in display screen |
| CN107103304A (en) * | 2017-04-28 | 2017-08-29 | 维沃移动通信有限公司 | The display methods and mobile terminal in a kind of fingerprint recognition region |
| CN107728979A (en) * | 2017-09-30 | 2018-02-23 | 联想(北京)有限公司 | A kind of processing method and electronic equipment |
| CN107678594A (en) * | 2017-09-30 | 2018-02-09 | 努比亚技术有限公司 | Calibration method, device, terminal device and the storage medium of touch screen |
| CN107895143A (en) * | 2017-10-27 | 2018-04-10 | 维沃移动通信有限公司 | A kind of finger print information processing method, mobile terminal and computer-readable recording medium |
| CN108319836A (en) * | 2018-01-31 | 2018-07-24 | 北京小米移动软件有限公司 | The method and apparatus for executing processing based on fingerprint recognition |
| CN108460352A (en) * | 2018-02-28 | 2018-08-28 | 北京小米移动软件有限公司 | The method and apparatus of fingerprint detection |
| CN108446663A (en) * | 2018-04-02 | 2018-08-24 | 北京小米移动软件有限公司 | fingerprint module setting method and device |
| CN109324863A (en) * | 2018-10-23 | 2019-02-12 | 北京小米移动软件有限公司 | The method, apparatus and computer readable storage medium of fingerprint recognition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11516377B2 (en) | Terminal, focusing method and apparatus, and computer readable storage medium | |
| EP3179711B1 (en) | Method and apparatus for preventing photograph from being shielded | |
| US10530836B2 (en) | Methods and apparatuses for acquiring image | |
| US10452890B2 (en) | Fingerprint template input method, device and medium | |
| EP3182716A1 (en) | Method and device for video display | |
| EP3173970A1 (en) | Image processing method and apparatus | |
| CN106557201B (en) | Pressure detection method and device | |
| CN107102772B (en) | Touch control method and device | |
| CN107155060A (en) | Image processing method and device | |
| CN112114765A (en) | Screen projection method and device and storage medium | |
| CN107480785B (en) | Convolutional neural network training method and device | |
| EP3001305A1 (en) | Method and device for controlling display of video | |
| CN107885016B (en) | Holographic projection method and device | |
| CN106599858B (en) | Fingerprint identification method and device and electronic equipment | |
| CN110852163A (en) | Binding method and device | |
| CN112331158B (en) | Terminal display adjusting method, device, equipment and storage medium | |
| US10827156B2 (en) | Light filling method and apparatus for photographing environment, and computer-readable storage medium | |
| EP3128722A1 (en) | File transmission method and apparatus, computer program and recording medium | |
| CN108650412B (en) | Display method, display device and computer readable storage medium | |
| CN108762554B (en) | Touch event response method and device | |
| CN108319899B (en) | Fingerprint identification method and device | |
| CN111383568B (en) | Display control method and device, electronic equipment and computer readable storage medium | |
| CN111860037A (en) | Calibration method and device for fingerprint acquisition area | |
| CN108459770B (en) | Coordinate correction method and device | |
| CN111291600A (en) | Fingerprint acquisition method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |