CN111460869A - Fingerprint acquisition method and device - Google Patents
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- CN111460869A CN111460869A CN201910105999.9A CN201910105999A CN111460869A CN 111460869 A CN111460869 A CN 111460869A CN 201910105999 A CN201910105999 A CN 201910105999A CN 111460869 A CN111460869 A CN 111460869A
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- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
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Abstract
The disclosure relates to a fingerprint acquisition method and apparatus. The method comprises the following steps: detecting position information of a finger pressing area; according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area; when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image; and lightening the lightening area to acquire the fingerprint image in the lightening area. According to the technical scheme, bright spots formed when the fingerprint image is collected can be completely covered by the finger, and dazzling bright light cannot be exposed.
Description
Technical Field
The disclosure relates to the technical field of terminals, in particular to a fingerprint acquisition method and a fingerprint acquisition device.
Background
With the rapid development of science and technology, a full screen has become the development trend of mobile phones. At present, various sensors on the front panel of the mobile phone are mainly hidden under a display screen, so that the screen occupation ratio of the display screen is higher. Among them, the underscreen fingerprint technology has become an important research direction. According to the fingerprint technology under the screen, an entity fingerprint identification key is cancelled, a fingerprint acquisition area is arranged on a display screen of the terminal, a user presses the fingerprint acquisition area with a finger, the terminal can awaken a fingerprint identification process, a light source is turned on to emit incident light to penetrate through the fingerprint acquisition area of the display screen and irradiate the fingerprint acquisition area to the fingertip of the user, a fingerprint image with high contrast and clear black and white is acquired by utilizing the phenomena of total reflection and diffuse reflection, and then fingerprint identification is carried out.
Disclosure of Invention
The embodiment of the disclosure provides a fingerprint acquisition method and a fingerprint acquisition device. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a fingerprint acquisition method, including:
detecting position information of a finger pressing area;
according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area;
when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image;
and lightening the lightening area to acquire the fingerprint image in the lightening area.
In one embodiment, the determining a lighting area when determining that the overlap area covers a preset first area in size according to the position information of the overlap area includes:
and when the overlapping area is determined to cover the first area in size and cannot cover a preset second area according to the position information of the overlapping area, determining the overlapping area as the lighting area.
In one embodiment, the determining a lighting area when determining that the overlap area covers a preset first area in size according to the position information of the overlap area includes:
when the overlap area is determined to cover a preset third area in size according to the position information of the overlap area, determining a partial area in the overlap area as the lighting area, wherein the third area covers the first area in size.
In one embodiment, the method further comprises:
and when the overlapped area does not cover the first area in size, outputting prompt information, wherein the prompt information is used for prompting a user to input the fingerprint again in the fingerprint acquisition area.
In one embodiment, the outputting the prompt message includes:
illuminating part or all of the fingerprint acquisition area, wherein the overlapping area does not cover the part or all of the fingerprint acquisition area;
the method further comprises the following steps:
and collecting fingerprint images at partial or all areas in the fingerprint collecting area.
According to a second aspect of the embodiments of the present disclosure, there is provided a fingerprint acquisition apparatus including:
the detection module is used for detecting the position information of the finger pressing area;
the first determining module is used for determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area according to the position information of the finger pressing area;
a second determining module, configured to determine a lighting area when it is determined that the overlap area covers a preset first area in size according to the position information of the overlap area, where the lighting area is in the overlap area and is an area occupied by a recognizable fingerprint image;
and the acquisition module is used for lightening the lightening area and acquiring the fingerprint image in the lightening area.
In one embodiment, the second determining module comprises:
the first determining submodule is used for determining the overlapping area as the lighting area when the overlapping area is determined to cover the first area in size and cannot cover a preset second area according to the position information of the overlapping area.
In one embodiment, the second determining module comprises:
and the second determining submodule is used for determining that a part of the overlapping area is the lighting area when the overlapping area is determined to cover a preset third area on the size according to the position information of the overlapping area, and the third area covers the first area on the size.
In one embodiment, the apparatus further comprises:
and the output module is used for outputting prompt information when the first area is not covered by the overlapped area in size, wherein the prompt information is used for prompting a user to input the fingerprint again in the fingerprint acquisition area.
In one embodiment, the output module comprises:
the lighting sub-module is used for lighting part or all of the fingerprint acquisition area, and the overlapping area does not cover the part or all of the fingerprint acquisition area;
the device further comprises:
the acquisition module is used for acquiring fingerprint images at partial or all areas in the fingerprint acquisition area.
According to a third aspect of the embodiments of the present disclosure, there is provided a fingerprint acquisition apparatus 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 the embodiments of the present disclosure, there is provided a computer-readable storage medium storing computer instructions, wherein the computer instructions, when executed by a processor, implement the steps of the above method.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the embodiment can detect the position information of the finger pressing area; according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area; when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image; and lightening the lightening area to acquire the fingerprint image in the lightening area, so that the terminal only forms a bright spot in the lightening area when collecting the fingerprint, and the lightening area is in the pressing area of the finger of the user, so that the formed bright spot can be covered by the finger of the user and glaring light cannot be exposed.
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 fingerprint acquisition according to an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating regions on a terminal during fingerprint acquisition according to an example embodiment.
FIG. 3 is a flow chart illustrating a method of fingerprint acquisition according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a fingerprint acquisition device according to an exemplary embodiment.
Fig. 5 is a block diagram illustrating a fingerprint acquisition device according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a fingerprint acquisition device according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating a fingerprint acquisition device according to an exemplary embodiment.
Fig. 8 is a block diagram illustrating a fingerprint acquisition device according to an exemplary embodiment.
Fig. 9 is a block diagram illustrating a fingerprint acquisition device 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, as long as a user presses the fingerprint acquisition area by a finger, the terminal turns on a light source, and a highlight light spot is formed in the fingerprint acquisition area so as to acquire fingerprint information. At present, the terminal only forms the highlight light spot with the same size as the fingerprint collection area at the fingerprint collection area of the display screen to collect the fingerprint information in the fingerprint collection area, however, the highlight light spot at the fingerprint collection area can not be completely shielded by the finger due to the fact that the size of the pressing area of the finger of a user on the terminal screen can not be controlled, and the exposed highlight light spot can be dazzled.
In order to solve the above problem, the present embodiment may detect position information of the finger-pressed area; according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area; when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image; and lightening the lightening area to acquire the fingerprint image in the lightening area, so that the terminal only forms a bright spot in the lightening area when collecting the fingerprint, and the lightening area is in the pressing area of the finger of the user, so that the formed bright spot can be covered by the finger of the user and glaring light cannot be exposed.
Fig. 1 is a flowchart illustrating a fingerprint acquisition method according to an exemplary embodiment, where the fingerprint acquisition method is used in a terminal, as shown in fig. 1, and includes the following steps 101 and 104:
in step 101, position information of a finger-pressed area is detected.
In step 102, according to the position information of the finger pressing area, the position information of the overlapping area of the finger pressing area and a preset fingerprint collecting area is determined.
In step 103, when it is determined that the overlap area covers a preset first area in size according to the position information of the overlap area, a lighting area is determined, and the lighting area is an area occupied by a recognizable fingerprint image in the overlap area.
In step 104, the lighting area is lighted, and the fingerprint image in the lighting area is acquired.
Here, fingerprint module setting in this disclosure is under the screen of terminal display screen, and when the fingerprint was gathered to needs, the light source in the fingerprint module can be opened to the terminal, and the incident light of this light source transmission can pierce through partial or whole fingerprint collection region like this, shines to user's fingertip, utilizes diffuse reflection's phenomenon for this fingerprint module can acquire a fingerprint image, so realizes fingerprint collection.
Here, the terminal may display a prompt pattern on the display screen in the off-screen state to prompt the user of the location of inputting the fingerprint, that is, the fingerprint collection area of the terminal, or may display a prompt pattern to prompt the user of the location of inputting the fingerprint when it is detected that the user is required to input the fingerprint in the on-screen state, for example, when an application or a file requires fingerprint unlocking. When a user sees a prompt pattern displayed on the terminal, if the user wants to unlock, the user can input a fingerprint in a fingerprint acquisition area prompted by the prompt pattern.
Here, when a user inputs a fingerprint, due to the fact that the sizes of fingers of different users are different, the pressing positions or pressing force degrees of the same user are different, and therefore the finger pressing areas of the user on the display screen are different, the terminal can detect the position information of the finger pressing areas of the user on the display screen of the terminal through a touch sensor on the touch screen module, such as a pressure sensor.
For example, fig. 2 is a schematic diagram illustrating each area on a terminal during fingerprint collection according to an exemplary embodiment, as shown in fig. 2, a preset fingerprint collection area 21 is an effective area where a fingerprint module of the terminal 2 can collect fingerprint information, and is located at a fixed position on a display screen of the terminal, when a finger presses an area 22 to touch the display screen of the terminal with a finger of a user, the finger covers the area on the display screen, and after the terminal detects the position information of the finger press area 22, the position information of an overlap area 20 between the finger press area 22 and the preset fingerprint collection area 21 can be determined according to the position information of the finger press area 22. It should be noted that, as shown in fig. 2, when the user inputs a fingerprint in the fingerprint collection area 21, the overlap area 20 exists, and when the user does not want to input a fingerprint, there is no overlap area between the finger pressing area detected by the terminal and the fingerprint collection area, at this time, the terminal does not control the fingerprint module to collect a fingerprint, and the process is ended.
Here, as shown in fig. 2, when the terminal determines that there is an overlap area 20 between the finger-pressing area 22 and the preset fingerprint collection area 21 and determines the position information of the overlap area 20, the terminal may determine the shape and size of the overlap area 20 according to the position information of the overlap area 20.
Here, the fingerprint module group only need gather the fingerprint image of certain size and shape just can carry out accurate fingerprint identification under the normal condition, and this first region can be that the fingerprint image that can carry out fingerprint identification occupies minimum area or is greater than this minimum area, and this first region can cover this minimum area completely in the size promptly.
For example, assuming that the first area may be 15 mm x 17 mm, the overlapping area 20 determined by the terminal may be determined to be 14 mm x 17 mm in size and not cover the first area, and the overlapping area 20 determined by the terminal may be determined to be 16 mm x 17 mm in size and cover the first area. Illustratively, the first area may also be a fingerprint acquisition area. When the user's finger completely covers the fingerprint collection area, the overlapping area between the finger pressing area and the fingerprint collection area is the fingerprint collection area, and at this time, the overlapping area is identical to the first area in size, and can cover the first area.
Here, when the terminal determines that the overlapping area 20 can cover the preset first area in size, it indicates that it can ensure that subsequent fingerprint identification can be performed by collecting the fingerprint image in the overlapping area 20, and at this time, the terminal can perform fingerprint collection, and the terminal may first determine a lighting area, which is in the overlapping area 20 and is an area occupied by a recognizable fingerprint image, so as to ensure that subsequent fingerprint identification can be performed by collecting the fingerprint image in the lighting area. Here, the lighting area may be the entire overlap area 20, or may be a partial area in the overlap area 20, as long as the fingerprint image in the area can be subjected to fingerprint recognition.
Here, the terminal has confirmed and has lighted after the region, the light source that just can open the fingerprint module lights this and lights the region, it forms the bright spot to locate to light the region, when incident light shines to user's fingertip, the unsmooth surface of user's finger fingerprint can reflect light to all sides of four sides, although incident light is parallel to each other, because the normal direction of each point is inconsistent, cause the reflection light to the random reflection of different directions, after the fingerprint module received different reverberation, just can determine a fingerprint image, just so gather the fingerprint image in this light region.
It should be noted that, the display on the terminal may be an AMO L ED (Active Matrix/Organic L light Emitting Diode, Active Matrix Organic light Emitting display), where the AMO L ED has characteristics of fast response speed, higher contrast, wider viewing angle, and the like, and each pixel in the AMO L ED may be independently switched, so that the terminal may control the AMO L ED to turn on the pixel in the lighting area to emit bright white light required for collecting a fingerprint image, and turn off the pixel that is not required, so that the lighting area may be lighted, and a highlight spot may be formed in the lighting area to collect the fingerprint image.
The embodiment can detect the position information of the finger pressing area; according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area; when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image; and lightening the lightening area to acquire the fingerprint image in the lightening area, so that the terminal only forms a bright spot in the lightening area when acquiring the fingerprint, and the lightening area is in an overlapping area of the finger pressing area of the user, so that the formed bright spot can be completely covered by the finger of the user and glaring light cannot be exposed.
In one possible implementation, step 103 of the above fingerprint acquisition method can be implemented as the following step a 1.
In step a1, when it is determined that the overlap area covers the first area in size and cannot cover a preset second area according to the position information of the overlap area, the overlap area is determined as the lighting area.
Here, the second region may be entirely over and larger in size than the first region, for example, the first region may be 15 mm x 17 mm, and the second region may be 17 mm x 19 mm. When the overlapping area can cover the first area but cannot cover the second area in size, it indicates that the fingerprint images collected in the overlapping area can be subjected to fingerprint identification but are not too large, and at this time, in order to accelerate the fingerprint collection speed and also ensure that the collected fingerprint images can be effectively subjected to fingerprint identification, the overlapping area can be directly determined as the lighting area, and the overlapping area is lighted for fingerprint collection.
According to the embodiment, when the overlapping area is determined to cover the first area in size and cannot cover the preset second area according to the position information of the overlapping area, the overlapping area is directly determined to be a lighting area, so that the fingerprint acquisition speed is increased, and the fingerprint acquisition effectiveness is also ensured.
In one possible implementation, step 103 of the above fingerprint acquisition method can be implemented as the following step a 2.
In step a2, when it is determined that the overlap area overlaps a preset third area in size according to the position information of the overlap area, a partial area in the overlap area is determined as the lighting area, and the third area overlaps the first area in size.
Here, the third area may completely cover the first area in size, and the third area may be the same as the second area or larger than the second area, for example, the third area may be a fingerprint collection area; if the first region is 15 mm 17 mm, the third region may be 18 mm 20 mm. When the size of the overlapping area can cover the third area, it indicates that the fingerprint images collected in the overlapping area can be sufficient for fingerprint identification and are many more, and in this case, in order to reduce the area of the lighted bright spots and also in order that the collected fingerprint images can be effectively used for fingerprint identification, the area occupied by the recognizable fingerprint images can be selected from the overlapping area as the lighted area. Preferably, the lighting area may be located at a middle position of the overlapping area, and light of the lighted bright spot may be prevented from leaking out from under the finger.
It should be noted here that the first area, the second area and the third area may be completely covered in size by the fingerprint acquisition area. The third area may also be a fingerprint acquisition area.
In this embodiment, when it is determined that the overlap area covers the preset third area in size according to the position information of the overlap area, a partial area in the overlap area is determined as the lighting area, that is, the area of the lighted bright spot is reduced, so that the collected fingerprint image can be effectively subjected to fingerprint identification.
In a possible implementation, the fingerprint acquisition method may further include the following step B1.
In step B1, when the overlapping area does not cover the first area in size, a prompt message is output, and the prompt message is used for prompting the user to re-input the fingerprint.
Here, when the overlapping area does not cover the first area in terms of size, the terminal indicates that the overlapping area is too small, and after the terminal collects the fingerprint image in the overlapping area, the user corresponding to the fingerprint image cannot be identified, which means that when the user inputs a fingerprint, the finger pressing area deviates from the fingerprint collection area more, and at this time, the terminal can directly display prompt information to prompt the user to re-input the fingerprint in the fingerprint collection area, so that failure of fingerprint identification by the terminal according to the collected smaller fingerprint image is avoided.
For example, the prompt information may be the prompt pattern for prompting the position of the fingerprint acquisition area, for example, the fingerprint acquisition area may be lighted up by using a smaller brightness, the boundary line of the fingerprint acquisition area may be displayed, or a prompt box may be displayed, and the prompt information "please re-input the fingerprint" is displayed in the prompt box; or directly output the voice "please re-input the fingerprint", etc.
Here, after the prompt message attracts the attention of the user, the user can re-input the fingerprint in the fingerprint collection area until the position where the user inputs the fingerprint is not deviated any more, so that the accuracy of pressing by the user can be continuously trained. And finally, the success probability of fingerprint identification is improved.
In this embodiment, when the overlapping area does not cover the first area in size, prompt information is output to prompt the user to re-input the fingerprint in the fingerprint acquisition area, so that the pressing accuracy of the user can be continuously trained. And finally, the success probability of fingerprint identification is improved.
In a possible implementation manner, the step B1 in the fingerprint acquisition method may further include the following step B11, and the fingerprint acquisition method may further include the following step B2.
In step B11, some or all of the fingerprint collection areas are lit, and the overlapping area does not cover some of the fingerprint collection areas.
In step B2, fingerprint images at some or all of the fingerprint acquisition areas are acquired.
Here, the terminal may also light a partial area or a whole area in the fingerprint collection area when the user fingerprint input deviates, a large bright spot is formed in the fingerprint collection area, the partial area or the whole area lighted by the terminal is not covered by the overlapping area, so that the user can see the bright spot which is not blocked by the user finger, at this time, the user can move the finger to the bright spot to block the bright spot, and meanwhile, because the incident light of the fingerprint module enters the finger at the bright spot, the fingerprint module does not need to turn on the light source at this time, the reflected light reflected by the finger fingerprint in the partial area or the whole area can be directly obtained, the fingerprint image in the partial area or the whole area is obtained, and the fingerprint collection rate is improved.
The embodiment can light a part of or all of the fingerprint acquisition area, at the moment, a user can move a finger to the part of or all of the fingerprint acquisition area to shield the bright spots, and meanwhile, because the incident light of the fingerprint module enters the finger at the bright spots, the fingerprint module does not need to turn on a light source, can directly acquire the reflected light reflected by the finger fingerprint in the part of or all of the fingerprint acquisition area, obtains the fingerprint image in the part of or all of the fingerprint acquisition area, and improves the fingerprint acquisition rate.
The implementation is described in detail below by way of several embodiments.
Fig. 3 is a flowchart illustrating a fingerprint acquisition method according to an exemplary embodiment, where as shown in fig. 3, the fingerprint acquisition method may be implemented by a terminal or the like, including steps 301 and 307.
In step 301, position information of a finger-pressed region is detected.
In step 302, according to the position information of the finger pressing area, the position information of the overlapping area of the finger pressing area and a preset fingerprint collecting area is determined.
In step 303, when it is determined that the overlap area covers the first area in size and cannot cover a preset second area according to the position information of the overlap area, it is determined that the overlap area is the lighting area.
In step 304, when it is determined that the overlap area covers a preset third area in size according to the position information of the overlap area, a partial area in the overlap area is determined as the lighting area, and the third area covers the first area in size.
And the lighting area is in the overlapping area and is an area occupied by the recognizable fingerprint image.
In step 305, the illuminated area is illuminated, and the fingerprint image in the illuminated area is acquired.
In step 306, when the overlap area does not cover the first area in size, some or all of the fingerprint acquisition areas are lighted up, and the overlap area does not cover the some or all of the fingerprint acquisition areas.
In step 307, fingerprint images at some or all of the fingerprint acquisition areas are acquired.
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 a fingerprint acquisition device that may be implemented as part or all of an electronic device, in software, hardware, or a combination of both, according to an example embodiment. As shown in fig. 4, the fingerprint acquisition apparatus includes:
a detection module 401, configured to detect position information of a finger pressing area;
a first determining module 402, configured to determine, according to the position information of the finger pressing area, position information of an overlapping area between the finger pressing area and a preset fingerprint acquisition area;
a second determining module 403, configured to determine a lighting area when it is determined that the overlapping area covers a preset first area in size according to the position information of the overlapping area, where the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image;
an obtaining module 404, configured to light the lighting area, and obtain a fingerprint image in the lighting area.
As a possible embodiment, fig. 5 is a block diagram of a fingerprint acquisition apparatus according to an exemplary embodiment, and as shown in fig. 5, the fingerprint acquisition apparatus disclosed above may further configure the second determination module 403 to include a first determination sub-module 4031, where:
a first determining submodule 4031, configured to determine, when it is determined that the overlap area covers the first area in size and cannot cover a preset second area according to the position information of the overlap area, that the overlap area is the lit area.
As a possible embodiment, fig. 6 is a block diagram of a fingerprint acquisition apparatus according to an exemplary embodiment, and as shown in fig. 6, the fingerprint acquisition apparatus disclosed above may further configure the second determination module 403 to include a second determination sub-module 4032, where:
a second determining submodule 4032, configured to determine, when it is determined that the overlap area covers a preset third area in size according to the position information of the overlap area, that a partial area in the overlap area is the lighting area, and the third area covers the first area in size.
As a possible embodiment, fig. 7 is a block diagram of a fingerprint acquisition apparatus according to an exemplary embodiment, and as shown in fig. 7, the fingerprint acquisition apparatus disclosed above may be further configured to include an output module 405, wherein:
an output module 405, configured to output a prompt message when the first area is not covered by the overlapping area in size, where the prompt message is used to prompt a user to re-input a fingerprint in the fingerprint acquisition area.
As a possible embodiment, fig. 8 is a block diagram of a fingerprint acquisition apparatus according to an exemplary embodiment, as shown in fig. 8, the disclosed fingerprint acquisition apparatus may further configure the output module 405 to include a lighting sub-module 4051, and the disclosed fingerprint acquisition apparatus may further be configured to include an acquisition module 406, wherein:
a lighting sub-module 4051, configured to light a part or all of the fingerprint acquisition regions, where the overlap region does not cover the part or all of the fingerprint acquisition regions;
an acquisition module 406, configured to acquire a fingerprint image at some or all of the fingerprint acquisition areas.
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. 9 is a block diagram illustrating a fingerprint acquisition apparatus according to an exemplary embodiment, which is suitable for a terminal device. For example, the apparatus 900 may be a mobile phone, a game console, a computer, a tablet device, a personal digital assistant, and the like.
The apparatus 900 may include one or more of the following components: processing component 901, memory 902, power component 903, multimedia component 904, audio component 905, input/output (I/O) interface 906, sensor component 907, and communications component 908.
The processing component 901 generally controls overall operation of the device 900, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 901 may include one or more processors 920 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 901 may include one or more modules that facilitate interaction between the processing component 901 and other components. For example, the processing component 901 may include a multimedia module to facilitate interaction between the multimedia component 904 and the processing component 901.
The memory 902 is configured to store various types of data to support operations at the apparatus 900. Examples of such data include instructions for any application or method operating on device 900, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 902 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 903 provides power to the various components of the device 900. The power components 903 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 900.
The multimedia component 904 includes a screen that provides an output interface between the device 900 and a user, in some embodiments, the screen may include a liquid crystal display (L CD) and a Touch Panel (TP). if the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
The I/O interface 906 provides an interface between the processing component 901 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 communication component 908 is configured to facilitate communications between the apparatus 900 and other devices in a wired or wireless manner. The apparatus 900 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 908 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 908 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 900 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), programmable logic devices (P L D), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 902 comprising instructions, executable by the processor 920 of the apparatus 900 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 an apparatus 900, enable the apparatus 900 to perform the above fingerprint acquisition method, the method comprising:
detecting position information of a finger pressing area;
according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area;
when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image;
and lightening the lightening area to acquire the fingerprint image in the lightening area.
In one embodiment, the determining a lighting area when determining that the overlap area covers a preset first area in size according to the position information of the overlap area includes:
and when the overlapping area is determined to cover the first area in size and cannot cover a preset second area according to the position information of the overlapping area, determining the overlapping area as the lighting area.
In one embodiment, the determining a lighting area when determining that the overlap area covers a preset first area in size according to the position information of the overlap area includes:
when the overlap area is determined to cover a preset third area in size according to the position information of the overlap area, determining a partial area in the overlap area as the lighting area, wherein the third area covers the first area in size.
In one embodiment, the method further comprises:
and when the overlapped area does not cover the first area in size, outputting prompt information, wherein the prompt information is used for prompting a user to input the fingerprint again in the fingerprint acquisition area.
In one embodiment, the outputting the prompt message includes:
illuminating part or all of the fingerprint acquisition area, wherein the overlapping area does not cover the part or all of the fingerprint acquisition area;
the method further comprises the following steps:
and collecting fingerprint images at partial or all areas in the fingerprint collecting area.
This embodiment also provides a fingerprint collection device, includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
detecting position information of a finger pressing area;
according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area;
when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image;
and lightening the lightening area to acquire the fingerprint image in the lightening area.
In one embodiment, the processor may be further configured to:
when the overlap region is determined to cover a preset first region in size according to the position information of the overlap region, determining a lighting region includes:
and when the overlapping area is determined to cover the first area in size and cannot cover a preset second area according to the position information of the overlapping area, determining the overlapping area as the lighting area.
In one embodiment, the processor may be further configured to:
when the overlap region is determined to cover a preset first region in size according to the position information of the overlap region, determining a lighting region includes:
when the overlap area is determined to cover a preset third area in size according to the position information of the overlap area, determining a partial area in the overlap area as the lighting area, wherein the third area covers the first area in size.
In one embodiment, the processor may be further configured to:
the method further comprises the following steps:
and when the overlapped area does not cover the first area in size, outputting prompt information, wherein the prompt information is used for prompting a user to input the fingerprint again in the fingerprint acquisition area.
In one embodiment, the processor may be further configured to:
the outputting the prompt message comprises:
illuminating part or all of the fingerprint acquisition area, wherein the overlapping area does not cover the part or all of the fingerprint acquisition area;
the method further comprises the following steps:
and collecting fingerprint images at partial or all areas in the fingerprint collecting area.
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 fingerprint acquisition method, comprising:
detecting position information of a finger pressing area;
according to the position information of the finger pressing area, determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area;
when the overlapping area is determined to cover a preset first area on the size according to the position information of the overlapping area, determining a lighting area, wherein the lighting area is in the overlapping area and is an area occupied by a recognizable fingerprint image;
and lightening the lightening area to acquire the fingerprint image in the lightening area.
2. The method according to claim 1, wherein the determining a lighting area when determining that the overlapping area covers a preset first area in size according to the position information of the overlapping area comprises:
and when the overlapping area is determined to cover the first area in size and cannot cover a preset second area according to the position information of the overlapping area, determining the overlapping area as the lighting area.
3. The method according to claim 1, wherein the determining a lighting area when determining that the overlapping area covers a preset first area in size according to the position information of the overlapping area comprises:
when the overlap area is determined to cover a preset third area in size according to the position information of the overlap area, determining a partial area in the overlap area as the lighting area, wherein the third area covers the first area in size.
4. The method of claim 1, further comprising:
and when the overlapped area does not cover the first area in size, outputting prompt information, wherein the prompt information is used for prompting a user to input the fingerprint again in the fingerprint acquisition area.
5. The method of claim 4, wherein outputting the prompt message comprises:
illuminating part or all of the fingerprint acquisition area, wherein the overlapping area does not cover the part or all of the fingerprint acquisition area;
the method further comprises the following steps:
and collecting fingerprint images at partial or all areas in the fingerprint collecting area.
6. A fingerprint acquisition device, comprising:
the detection module is used for detecting the position information of the finger pressing area;
the first determining module is used for determining the position information of an overlapping area of the finger pressing area and a preset fingerprint acquisition area according to the position information of the finger pressing area;
a second determining module, configured to determine a lighting area when it is determined that the overlap area covers a preset first area in size according to the position information of the overlap area, where the lighting area is in the overlap area and is an area occupied by a recognizable fingerprint image;
and the acquisition module is used for lightening the lightening area and acquiring the fingerprint image in the lightening area.
7. The apparatus of claim 6, wherein the second determining module comprises:
the first determining submodule is used for determining the overlapping area as the lighting area when the overlapping area is determined to cover the first area in size and cannot cover a preset second area according to the position information of the overlapping area.
8. The apparatus of claim 6, wherein the second determining module comprises:
and the second determining submodule is used for determining that a part of the overlapping area is the lighting area when the overlapping area is determined to cover a preset third area on the size according to the position information of the overlapping area, and the third area covers the first area on the size.
9. The apparatus of claim 6, further comprising:
and the output module is used for outputting prompt information when the first area is not covered by the overlapped area in size, wherein the prompt information is used for prompting a user to input the fingerprint again in the fingerprint acquisition area.
10. The apparatus of claim 9, wherein the output module comprises:
the lighting sub-module is used for lighting part or all of the fingerprint acquisition area, and the overlapping area does not cover the part or all of the fingerprint acquisition area;
the device further comprises:
the acquisition module is used for acquiring fingerprint images at partial or all areas in the fingerprint acquisition area.
11. A fingerprint acquisition 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.
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| CN111460869B (en) | 2023-10-20 |
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