CN111191615B - Screen fingerprint acquisition method and device, electronic equipment and computer storage medium - Google Patents
Screen fingerprint acquisition method and device, electronic equipment and computer storage medium Download PDFInfo
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- CN111191615B CN111191615B CN202010001937.6A CN202010001937A CN111191615B CN 111191615 B CN111191615 B CN 111191615B CN 202010001937 A CN202010001937 A CN 202010001937A CN 111191615 B CN111191615 B CN 111191615B
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000003860 storage Methods 0.000 title claims abstract description 16
- 238000004590 computer program Methods 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 206010070834 Sensitisation Diseases 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008313 sensitization Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010034960 Photophobia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 238000003825 pressing Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
- G06T3/4038—Scaling the whole image or part thereof for image mosaicing, i.e. plane images composed of plane sub-images
Abstract
The embodiment of the application provides a screen fingerprint acquisition method, a device, electronic equipment and a computer storage medium, wherein the screen fingerprint acquisition method comprises the following steps: controlling a point light source on a screen to emit light, and acquiring a first fingerprint image; each time one other point light source is added to emit light, and a fingerprint image corresponding to each other point light source is obtained; and splicing the first fingerprint image and fingerprint images corresponding to the other point light sources to obtain fingerprint information and outputting the fingerprint information. According to the screen fingerprint acquisition method, the point light sources on the screen are controlled to emit light and the corresponding fingerprint images are acquired, so that the fingerprint images corresponding to the independent point light sources are obtained, then the fingerprint images corresponding to the independent point light sources are spliced to form complete fingerprint information, the fingerprint images corresponding to the independent point light sources are free from photosensitive hysteresis, the acquired fingerprint information is clearer and more accurate, and the fingerprint identification accuracy is improved under the condition that the identification efficiency is ensured.
Description
Technical Field
The application relates to the technical field of computer information acquisition, in particular to a screen fingerprint acquisition method, a screen fingerprint acquisition device, electronic equipment and a computer storage medium.
Background
Thanks to the breaking of the bottleneck of the OLED (Organic Light Emitting Diode ) screen productivity, the maturity of OLED screen production technology is gradually improved, and the production cost is gradually reduced. At present, the new optical fingerprint identification technology discards the optical system of the traditional optical fingerprint, and uses the light of the display screen as a light source instead. The current mainstream solution is to perform optical fingerprinting through an OLED screen that can be self-luminous. The latest fingerprint imaging scheme does not adopt a traditional light path structure, so that the thickness of the whole imaging system is reduced, and the cost of the imaging system is reduced. The new optical fingerprint identification technology without the optical layer comprises schemes such as point light source imaging, line light source imaging and the like, and a complete fingerprint image can be formed by repeatedly scanning the finger and then splicing the scanned images.
However, because the image sensor senses the image with hysteresis, the fingerprint imaging scheme without the optical layer always has the photosensitive hysteresis (lag), i.e. the residual image imaged last time is left in the next fingerprint image. The new optical fingerprint identification technology requires at least two imaging steps and then stitching to form a complete image of the fingerprint in a small area for identification. The sensitization hysteresis can have serious influence on the splicing and recognition quality of fingerprints. If the lag is completely eliminated, the waiting time is long, the imaging and recognition efficiency is too low, and the response time requirement of fingerprint recognition cannot be met.
Disclosure of Invention
Aiming at the defects of the existing mode, the application provides a screen fingerprint acquisition method, a device, electronic equipment and a computer storage medium, which are used for solving the technical problem that the photosensitive hysteresis in the prior art has serious influence on the fingerprint splicing and recognition quality.
In a first aspect, an embodiment of the present application provides a method for capturing a screen fingerprint, including:
controlling a point light source on a screen to emit light, and acquiring a first fingerprint image;
each time one other point light source is added to emit light, and a fingerprint image corresponding to each other point light source is obtained;
and splicing the first fingerprint image and fingerprint images corresponding to the other point light sources to obtain fingerprint information and outputting the fingerprint information.
In some implementations of the first aspect, each time one other point light source is added to emit light, a fingerprint image corresponding to each other point light source is obtained, including:
the N point light sources on the screen and the newly added N+1th point light source are controlled to emit light together, and the integral finger corresponding to the N+1th point light source is obtainedTattooing image I N+1 The method comprises the steps of carrying out a first treatment on the surface of the Other point light sources include the 2 nd to n+1th point light sources;
according to the integral fingerprint image I corresponding to the last acquired N point light sources N And an overall fingerprint image I corresponding to the n+1 point light sources N+1 Determining a fingerprint image I corresponding to the (n+1) th point light source N+1-N The method comprises the steps of carrying out a first treatment on the surface of the Integral fingerprint image I N+1 And integral fingerprint image I N Partially overlapping, wherein N is a positive integer.
With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, the fingerprint image is obtained from image information within a preset radius range centered on the point light source.
With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, before the step of controlling a point light source on a screen to emit light and acquire a first fingerprint image, the method includes:
acquiring trigger information on a screen;
and if the trigger information accords with the preset trigger condition, collecting fingerprint information.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the trigger information includes trigger area information; if the trigger information accords with the preset trigger condition, before the step of collecting the fingerprint information, the method comprises the following steps:
and determining that the trigger area corresponding to the trigger area information is positioned in a preset trigger position range, and starting to collect fingerprint information.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the trigger information includes trigger area information; if the trigger information accords with the preset trigger condition, before the step of collecting the fingerprint information, the method comprises the following steps:
the triggering area information accords with the preset contact area condition, and fingerprint information starts to be collected.
In a second aspect, the present application provides a screen fingerprint acquisition device comprising:
the first acquisition module is used for controlling a point light source on the screen to emit light and acquiring a first fingerprint image;
the second acquisition module is used for adding one other point light source each time to emit light and acquiring fingerprint images corresponding to the other point light sources;
and the splicing module is used for splicing the first fingerprint image and the fingerprint images corresponding to the other point light sources to obtain fingerprint information and outputting the fingerprint information.
In certain implementations of the second aspect, the second acquisition module includes:
the imaging unit is used for controlling N point light sources on the screen and the N+1th point light source newly added at the moment to emit light together, and acquiring an integral fingerprint image I corresponding to the N+1th point light sources N+1 The method comprises the steps of carrying out a first treatment on the surface of the Other point light sources include the 2 nd to n+1th point light sources;
the image capturing unit is used for capturing the whole fingerprint image I corresponding to the N point light sources acquired last time N And an overall fingerprint image I corresponding to the n+1 point light sources N+1 Determining a fingerprint image I corresponding to the (n+1) th point light source N+1-N The method comprises the steps of carrying out a first treatment on the surface of the Integral fingerprint image I N+1 And integral fingerprint image I N Partially overlapping, wherein N is a positive integer.
In a third aspect, the present application provides an electronic device, including: the system comprises a memory and a processor, wherein the memory stores a computer program which is executed by the processor to realize the screen fingerprint acquisition method provided in the first aspect of the application.
In a fourth aspect, the present application provides a computer-readable storage medium storing computer instructions that, when executed on a computer, implement the screen fingerprint acquisition method provided in the first aspect of the present application.
The beneficial technical effects that technical scheme that this application embodiment provided brought are:
according to the screen fingerprint acquisition method, the point light sources on the screen are controlled to emit light and the corresponding fingerprint images are acquired, so that the fingerprint images corresponding to the independent point light sources are obtained, then the fingerprint images corresponding to the independent point light sources are spliced to form complete fingerprint information, the fingerprint images corresponding to the independent point light sources are free from photosensitive hysteresis, the acquired fingerprint information is clearer and more accurate, and the fingerprint identification accuracy is improved under the condition that the identification efficiency is ensured.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a flowchart of a screen fingerprint collection method according to an embodiment of the present application;
fig. 2 is a flowchart of a method for acquiring fingerprint images corresponding to each other point light source according to an embodiment of the present application;
fig. 3 is a schematic diagram of a fingerprint image acquisition principle according to an embodiment of the present application;
fig. 4 is a schematic diagram of a screen fingerprint collecting method according to an embodiment of the present application;
fig. 5 is a schematic frame diagram of a structure of a screen fingerprint acquisition device according to an embodiment of the present application;
fig. 6 is a schematic frame diagram of a structure of another screen fingerprint acquisition device according to an embodiment of the present application;
fig. 7 is a schematic frame diagram of a structure of an electronic device according to an embodiment of the present application.
Detailed Description
Examples of embodiments of the present application are illustrated in the accompanying drawings, in which like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. Further, if detailed description of the known technology is not necessary for the illustrated features of the present application, it will be omitted. The embodiments described below by referring to the drawings are exemplary only for the purpose of illustrating the present application and are not to be construed as limiting the present application.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It should be understood that the term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
The under-screen fingerprint identification is a popular type of identity authentication mode of the current electronic products, however, the efficiency and accuracy of the under-screen fingerprint identification still need to be improved, and as the basic principle of the under-screen fingerprint identification is to use the light rays of a display screen as a light source, the emitted light rays are received by an image sensor in the device after being reflected by the finger pressed on the screen, so that the fingerprint information of the finger is analyzed. Because the fingerprint information is collected and needs to be scanned for a plurality of times, then the scanned images are spliced to obtain the complete fingerprint information, the operation of the image sensor cannot be started and ended instantaneously, the image sensor is still affected by the previous image information when receiving the subsequent image information, namely, the image information is ghost caused by photosensitive hysteresis, and finally, the obtained fingerprint image information is unclear. If the image sensor is required to collect a new round of image information after the photosensitive hysteresis disappears, the efficiency of the on-screen fingerprint identification is greatly reduced.
The application provides an on-screen fingerprint identification method, an on-screen fingerprint identification device, electronic equipment and a computer readable storage medium, and aims to solve the technical problems in the prior art.
The following describes the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
An embodiment of the present application provides a method for capturing a screen fingerprint, as shown in fig. 1, including:
s100: and controlling a point light source on the screen to emit light, and acquiring a first fingerprint image.
The first fingerprint image corresponds to the luminous point light source, and as no other point light sources are luminous on the screen, the first fingerprint image can clearly reflect the fingerprint information of the local part of the finger.
S200: and adding one other point light source each time to emit light, and acquiring fingerprint images corresponding to each other point light source.
By adding point light sources to emit light and performing related operation, a clear fingerprint image corresponding to each newly added point light source is found out, and the specific operation is described later.
S300: and splicing the first fingerprint image and fingerprint images corresponding to the other point light sources to obtain fingerprint information and outputting the fingerprint information.
All the fingerprint images corresponding to the single point light sources reflect the fingerprint information of a certain part of the finger, and the fingerprint information of a complete finger can be obtained by splicing the fingerprint information of the parts.
According to the screen fingerprint acquisition method, the point light sources on the screen are controlled to emit light and the corresponding fingerprint images are acquired, so that the fingerprint images corresponding to the independent point light sources are obtained, then the fingerprint images corresponding to the independent point light sources are spliced to form complete fingerprint information, the fingerprint images corresponding to the independent point light sources are free from photosensitive hysteresis, the acquired fingerprint information is clearer and more accurate, and the fingerprint identification accuracy is improved under the condition that the identification efficiency is ensured.
The screen fingerprint acquisition can be started by controlling a point light source on the screen to emit light, i.e. according to S100, a point light source on the screen is turned on, which point light source is named D for convenience of description 1 ，D 1 The emitted light irradiates the finger pressing the screen, is reflected on an area of the finger and enters the image sensor of the device, and thus the device obtains the D 1 Corresponding first fingerprint image I 1 . The fingerprint image is specifically converted into digital information in the device.
In one embodiment of the present application, S200 is a step that can be repeated, that is, adding one other point light source to emit light each time, and acquiring a fingerprint image corresponding to each other point light source, as shown in fig. 2, specifically includes:
s210: the N point light sources on the screen and the newly added N+1th point light source are controlled to emit light together, and an integral fingerprint image I corresponding to the N+1th point light source is obtained N+1 The method comprises the steps of carrying out a first treatment on the surface of the Other point light sources include the 2 nd to n+1 th point light sources.
Optionally, N is a positive integer, the minimum is 1, and the Nth point light source is named as D N As can be seen from S210 and S100 described above, a point light source emits light on the screen, as shown in fig. 3, namely the point light source D described above 1 Emits light at D 1 Under the condition of continuously emitting light, a point light source D is additionally arranged 2 The light is emitted, namely 2 point light sources on the screen emit light simultaneously, the light emitting area on the screen is increased, the finger area capable of being illuminated is increased, and accordingly more fingerprint images are acquired. At the moment, 2 point light sources emit light to irradiate the finger at the same time, and the fingerprint image fed back is an integral fingerprint image I obtained by the 2 point light sources 2 。
S220: according to the integral fingerprint image I corresponding to the last acquired N point light sources N And an overall fingerprint image I corresponding to the n+1 point light sources N+1 Determining a fingerprint image I corresponding to the (n+1) th point light source N+1-N The method comprises the steps of carrying out a first treatment on the surface of the Integral fingerprint image I N+1 And integral fingerprint image I N Partially overlapping, wherein N is a positive integer.
Optionally, the step is a step of acquiring a fingerprint image corresponding to each point light source, and the whole fingerprint image I acquired in the previous (i.e. last) fingerprint image acquisition process is acquired N And the integral fingerprint image I acquired after adding a point light source N+1 Worse, the overall fingerprint image I is due to the fact that the image sensor has a lag in light sensitivity and the addition of one point source is usually near all point sources before the addition N+1 And integral fingerprint image I N At least a part of the image information is coincident and the whole fingerprint image I N Does not have a point light source D newly added N+1 Corresponding fingerprint image, will I N+1 Subtracting I N D can be obtained N+1 Corresponding fingerprint image I N+1-N 。
The above process is repeated continuously, as shown in FIGS. 3 and 4, i.e. the point light source D is obtained 2 Corresponding fingerprint image I 2-1 Point light source D 3 Corresponding fingerprint image I 3-2 … … point light sources D N+1-N Corresponding fingerprint image I N+1-N I.e. the fingerprint image corresponding to each of the other point light sources in S300. In S300, I is obtained respectively 1 、I 2 、I 3-2 、……、I N+1-N Because the point light sources are relatively concentrated, the distance between two adjacent point light sources is not large, each fingerprint image has continuity, the reflected fingerprint information of the finger parts also has continuity, and the collected partial fingerprint images can be spliced into a complete fingerprint image in an image splicing mode, namely, the fingerprint information of the finger pressed on the screen is obtained. In order to acquire more accurate fingerprint information, the fingerprint images with the greatest quantity can be acquired, and the value of N is as great as possible. However, considering the limitation of the processing capacity of the device, too large a value is not preferable, so as to avoid the influence of too large calculation amount on the screen fingerprint acquisition efficiency.
In addition, in order to use up the performance of the equipment, information corresponding to fingerprint images is acquired as much as possible, and the fingerprint image corresponding to each point light source is acquired from image information in a preset radius range taking the point light source as a circle center. By setting the information collection method of the image sensor, fingerprint images around the point light source are collected, and in the case where a plurality of point light sources exist, these fingerprint images have overlapping portions. The preset radius is specifically set according to the specific performance of each device, and different schemes can be determined according to the efficiency requirements of users for fingerprint identification.
In some possible embodiments, before the step of controlling the point light source on the screen to emit light and acquiring the first fingerprint image, the method further includes: and acquiring triggering information on the screen, and acquiring fingerprint information if the triggering information accords with a preset triggering condition. In an actual application scene, fingerprint collection or fingerprint identification is not caused when all fingers touch a screen of the device, so that the device determines whether to collect the screen fingerprint by specifically judging the trigger information acquired on the screen, when the trigger information accords with a preset trigger condition, fingerprint information collection is performed again, and otherwise, fingerprint information collection is not performed so as to ensure the economical efficiency of the operation of the device.
In one specific implementation of the above embodiment, the trigger information includes trigger area information; if the trigger information accords with the preset trigger condition, before the step of collecting the fingerprint information, the method comprises the following steps: and determining that the trigger area corresponding to the trigger area information is positioned in a preset trigger position range, and starting to collect fingerprint information. The trigger information comprises trigger area information representing the trigger position, namely the position of the finger on the screen, and as the screen is generally a complete screen which can be touched, an area is specially arranged on the screen for information authentication, and when the finger is placed in the area, the subsequent fingerprint information acquisition is started. Otherwise, the fingerprint information collection program is not entered.
In another implementation of the foregoing embodiment, the trigger information includes trigger area information; if the trigger information accords with the preset trigger condition, before the step of collecting the fingerprint information, the method comprises the following steps: the triggering area information accords with the preset contact area condition, and fingerprint information starts to be collected. The finger can touch the screen in a plurality of modes, in some cases, the finger can only touch the screen and the purpose of starting the mobile phone is not achieved, at the moment, the area of the finger contacting the screen is smaller, namely, the trigger area information in the trigger information does not reach the condition of the preset contact area, and the operation of collecting the fingerprint information is not started.
A second aspect of the present application provides a screen fingerprint acquisition device 10, as shown in fig. 5, the screen fingerprint acquisition device 10 comprising: a first acquisition module 11, a second acquisition module 12 and a splicing module 13.
The first acquisition module 11 is used for controlling a point light source on a screen to emit light, and acquiring a first fingerprint image. The second acquiring module 12 is configured to add one other point light source each time to emit light, and acquire a fingerprint image corresponding to each other point light source. The stitching module 13 is configured to stitch the first fingerprint image and fingerprint images corresponding to each other point light source, obtain fingerprint information, and output the fingerprint information.
The screen fingerprint acquisition device 10 that this application provided can be through the luminous fingerprint image that obtains corresponding of pointolite on the control screen to obtain the fingerprint image that every independent pointolite corresponds, then splice the fingerprint image that these independent pointolite correspond and form complete fingerprint information, eliminated the sensitization hysteresis phenomenon that exists among the traditional fingerprint identification technique under the screen, the fingerprint information that obtains is more clear accurate, under the circumstances of guaranteeing recognition efficiency, has improved fingerprint identification's accuracy.
In some possible embodiments, as shown in fig. 6, the second acquisition module 12 includes: an imaging unit 121 and an image capturing unit 122. The imaging unit 121 is configured to control the N point light sources on the screen and the n+1th point light source newly added to emit light together, and obtain an overall fingerprint image I corresponding to the n+1th point light sources N+1 The method comprises the steps of carrying out a first treatment on the surface of the Other point light sources include the 2 nd to n+1 th point light sources. The image capturing unit 122 is configured to capture an overall fingerprint image I corresponding to N point light sources obtained last time N And an overall fingerprint image I corresponding to the n+1 point light sources N+1 Determining a fingerprint image I corresponding to the (n+1) th point light source N+1 -N; integral fingerprint image I N+1 And integral fingerprint image I N Partially overlapping, wherein N is a positive integer.
In some possible embodiments, when the first acquiring module 11 and the second acquiring module 12 acquire the fingerprint image, the fingerprint image is acquired from image information within a preset radius range centered on the point light source.
In some possible embodiments, the first obtaining module 11 is further configured to obtain trigger information on the screen before the step of obtaining the first fingerprint image by controlling a point light source on the screen to emit light; and if the trigger information accords with the preset trigger condition, collecting fingerprint information.
In some implementations of the foregoing embodiments, the trigger information includes trigger area information; the first obtaining module 11 is further configured to determine whether a trigger area corresponding to the trigger area information is located in a preset trigger position range, and if yes, start to collect fingerprint information.
In some implementations of the foregoing embodiments, the trigger information includes trigger area information; the first obtaining module 11 is further configured to determine whether the trigger area information meets a preset contact area condition, and if yes, start to collect fingerprint information.
Based on the same inventive concept, a third aspect of the present application further provides an electronic device, including: the screen fingerprint acquisition device comprises a memory and a processor, wherein the memory stores a computer program, and the computer program is executed by the processor to realize the screen fingerprint acquisition method provided in the first aspect.
According to the screen fingerprint acquisition method, the point light sources on the screen can be controlled to emit light and acquire corresponding fingerprint images, so that fingerprint images corresponding to the independent point light sources are obtained, then the fingerprint images corresponding to the independent point light sources are spliced to form complete fingerprint information, the fingerprint images corresponding to the independent point light sources are free from photosensitive hysteresis, the acquired fingerprint information is clearer and more accurate, and the fingerprint identification accuracy is improved under the condition of guaranteeing the identification efficiency.
The embodiment of the application provides an electronic device 1000, including: a processor 1001, a bus 1002, and a memory 1003. The processor 1001 and the memory 1003 are electrically connected to each other, specifically by a bus 1002. Alternatively, the structure of the electronic device 1000 is not limited to the embodiment of the present application.
In an alternative embodiment, an electronic device is provided, as shown in fig. 7, the electronic device 1000 shown in fig. 7 includes: a processor 1001 and a memory 1003. The processor 1001 is coupled to the memory 1003, such as via a bus 1002. Optionally, the electronic device 1000 may also include a transceiver 1004. It should be noted that, in practical applications, the transceiver 1004 is not limited to one, and the structure of the electronic device 1000 is not limited to the embodiments of the present application.
The processor 1001 may be a CPU (Central Processing Unit ), general purpose processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field Programmable Gate Array, field programmable gate array) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor 1001 may also be a combination that implements computing functionality, such as a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, or the like.
Bus 1002 may include a path to transfer information between the components. Bus 1002 may be a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus, or EISA (Extended Industry Standard Architecture ) bus, among others. The bus 1002 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 7, but not only one bus or one type of bus.
The Memory 1003 may be, but is not limited to, ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, RAM (Random Access Memory ) or other type of dynamic storage device that can store information and instructions, EEPROM (Electrically Erasable Programmable Read Only Memory ), CD-ROM (Compact Disc ReadOnly Memory, compact disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The memory 1003 is used for storing application code for executing the present application and is controlled to be executed by the processor 1001. The processor 1001 is configured to execute application code stored in the memory 1003 to implement what is shown in the foregoing method embodiment.
Among them, electronic devices include, but are not limited to: smart phones, tablet computers, desktop computers employing fingerprint recognition, and the like.
Yet another embodiment of the present application provides a computer readable storage medium having a computer program stored thereon, which when run on a computer, enables the computer to implement the corresponding content of the foregoing method embodiments. Compared with the prior art, through the computer program stored on the computer readable storage medium provided by the embodiment of the application, the influence of photosensitive hysteresis in the traditional under-screen fingerprint identification can be eliminated, the acquired fingerprint information is clearer and more accurate, and the accuracy of fingerprint identification is improved under the condition of ensuring the identification efficiency.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations should and are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A screen fingerprint acquisition method, comprising:
controlling a point light source on a screen to emit light, and acquiring a first fingerprint image;
each time one other point light source is added to emit light, and a fingerprint image corresponding to each other point light source is obtained;
splicing the first fingerprint image and fingerprint images corresponding to all other point light sources to obtain fingerprint information and outputting the fingerprint information;
wherein, every time add other pointolite luminous, acquire the fingerprint image that every other pointolite corresponds, include:
the N point light sources on the screen and the newly added N+1th point light source are controlled to emit light together, and an integral fingerprint image I corresponding to the N+1th point light source is obtained N+1 The method comprises the steps of carrying out a first treatment on the surface of the The other point light sources comprise any point light source from the 2 nd point light source to the n+1th point light source;
according to the last acquired N integral fingerprint images I corresponding to the point light sources N And the integral fingerprint image I corresponding to the N+1 point light sources N+1 Determining a fingerprint image I corresponding to the (n+1) th point light source N+1-N The method comprises the steps of carrying out a first treatment on the surface of the The integral fingerprint image I N+1 And integral fingerprint image I N Partially overlapping, wherein N is a positive integer.
2. The screen fingerprint acquisition method according to claim 1, wherein the fingerprint image is obtained from image information within a preset radius range centered on a point light source.
3. The method for capturing fingerprint on a screen according to claim 1, wherein the step of controlling a point light source on the screen to emit light and acquiring the first fingerprint image is preceded by the step of:
acquiring trigger information on a screen;
and if the trigger information accords with a preset trigger condition, collecting fingerprint information.
4. A screen fingerprint acquisition method according to claim 3, wherein the trigger information comprises trigger area information; and if the triggering information accords with a preset triggering condition, before the step of collecting fingerprint information, the method comprises the following steps:
and determining that the trigger area corresponding to the trigger area information is positioned in a preset trigger position range, and starting to collect fingerprint information.
5. A screen fingerprint acquisition method according to claim 3, wherein the trigger information comprises trigger area information; and if the triggering information accords with a preset triggering condition, before the step of collecting fingerprint information, the method comprises the following steps:
and the triggering area information accords with the preset contact area condition, and fingerprint information is acquired.
6. A screen fingerprint acquisition device, comprising:
the first acquisition module is used for controlling a point light source on the screen to emit light and acquiring a first fingerprint image;
the second acquisition module is used for adding one other point light source each time to emit light and acquiring fingerprint images corresponding to the other point light sources;
the splicing module is used for splicing the first fingerprint image and fingerprint images corresponding to all the other point light sources to obtain fingerprint information and outputting the fingerprint information;
wherein, every time add other pointolite luminous, acquire the fingerprint image that every other pointolite corresponds, include:
controlling N point light sources on the screen and the newly added (n+1) th point light source to emit light together to obtainIntegral fingerprint image I corresponding to N+1 point light sources N+1 The method comprises the steps of carrying out a first treatment on the surface of the The other point light sources comprise any point light source from the 2 nd point light source to the n+1th point light source;
according to the last acquired N integral fingerprint images I corresponding to the point light sources N And the integral fingerprint image I corresponding to the N+1 point light sources N+1 Determining a fingerprint image I corresponding to the (n+1) th point light source N+1-N The method comprises the steps of carrying out a first treatment on the surface of the The integral fingerprint image I N+1 And integral fingerprint image I N Partially overlapping, wherein N is a positive integer.
7. An electronic device, comprising: a memory and a processor, the memory storing a computer program that is executed by the processor to implement the screen fingerprint acquisition method of any one of claims 1-5.
8. A computer readable storage medium for storing computer instructions which, when run on a computer, implement the screen fingerprint acquisition method of any one of the preceding claims 1 to 5.
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