WO2019071557A1

WO2019071557A1 - Method for collecting biological feature information, terminal and computer readable storage medium

Info

Publication number: WO2019071557A1
Application number: PCT/CN2017/106008
Authority: WO
Inventors: 李谋涛; 于泽
Original assignee: 深圳芯启航科技有限公司
Priority date: 2017-10-13
Filing date: 2017-10-13
Publication date: 2019-04-18

Abstract

A method for collecting biological feature information, applied to a terminal having an image sensor. The image sensor comprises a pixel array consisting of two or more pixels, and when each pixel in the pixel array senses biological feature information to be collected, a pixel signal generated by the pixel is greater than a preset threshold. The method comprises: detecting pixel signals generated by pixels at n preset positions in the pixel array (101); determining the pixels with the generated pixel signal being greater than the preset threshold as target pixels (102); obtaining location information of each target pixel in the pixel array (103); generating at least one collection area on the pixel array based on the position information of each target pixel in the pixel array (104); and collecting the biological feature information of the at least one collection area (105). The method can reduce the collected amount of data, reduce the collection time, and improve the collection efficiency.

Description

Description: Inventive name: biometric information collection method, terminal and computer readable storage medium

[0001] The present application belongs to the field of biometric identification technologies, and in particular, to a biometric information collecting method, a terminal, and a computer readable storage medium.

Background technique

[0002] At present, biometrics technology is widely used in various terminals for its convenience, accuracy, and security. For example, many mobile terminals such as mobile phones and tablets are equipped with the function of unlocking by fingerprint recognition. After biometrics, biometric information needs to be collected first. As technology advances, more and more terminals tend to be equipped with larger-sized display screens and captured by image sensors that match the size of the display screen. Display biometric information of the object to be collected that is in contact with the screen

[0003] However, in the collection of biometric information by an image sensor that matches the size of the display screen, all pixels of the image sensor need to be fully scanned and acquired in the prior art, due to the large display screen area. The corresponding number of pixels on the image sensor to be collected is relatively large, so that the time for collecting biometric information is long, and the collection efficiency is not high.

technical problem

In view of this, the present application provides a biometric information collecting method, a terminal, and a computer readable storage medium, which can reduce the time for collecting biometric information and improve the collection efficiency.

Problem solution

Technical solution

[0005] A first aspect of the present application provides a biometric information collecting method applied to a terminal having an image sensor, the image sensor including a pixel array composed of two or more pixels, each of the pixel arrays After the pixel senses the biometric information to be collected, the pixel signal generated by the pixel is greater than a preset threshold;

[0006] The biometric information collection method includes:

[0007] detecting pixel signals generated by pixels of n preset positions in the pixel array, where n is a natural number, And, the value of the n is related to the number of pixels included in the pixel array;

[0008] determining, according to the detected pixel signals generated by pixels of n preset positions in the pixel array, a pixel whose generated pixel signal is greater than the preset threshold is determined as a target pixel;

Obtaining location information of each target pixel in the pixel array;

[0010] generating at least one acquisition area on the pixel array based on position information of each target pixel in the pixel array;

[0011] collecting the biometric information for the at least one acquisition area.

[0012] A second aspect of the present application provides a terminal, the terminal having an image sensor, the image sensor including a pixel array composed of two or more pixels, each pixel in the pixel array being sensed The biometric information to be collected, the pixel signal generated by the pixel is greater than a preset threshold;

[0013] the terminal includes:

[0014] a pixel signal detecting unit, configured to detect a pixel signal generated by pixels of n preset positions in the pixel array, where n is a natural number, and the value of the n is a pixel included in the pixel array Quantity related;

[0015] a target pixel determining unit, configured to determine, according to a pixel signal generated by pixels of n preset positions in the pixel array detected by the pixel signal detecting unit, a pixel whose generated pixel signal is greater than the preset threshold Target pixel

[0016] a location information acquiring unit, configured to acquire location information of each target pixel in the pixel array; [0017] an acquisition region generating unit, configured to acquire, according to the target pixel acquired by the location information acquiring unit, the pixel Position information in the array, generating at least one acquisition area on the pixel array;

[0018] The collecting unit is configured to perform biometric feature information collection on the at least one collection area generated by the collection area generating unit.

[0019] A third aspect of the present application provides a terminal, the terminal including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the computer The program 吋 implements the steps of the biometric information collection method provided by the first aspect of the present application.

[0020] A fourth aspect of the present application provides a computer readable storage medium storing a computer program executed by a processor to implement the biometrics provided by the first aspect of the present application The steps of the information collection method. Advantageous effects of the invention

Beneficial effect

[0021] In the solution of the present application, by detecting a pixel signal generated by pixels of n preset positions in the pixel array, a target pixel on which the biometric information to be acquired is sensed on the image sensor may be determined, based on the target pixel. Position information, generating at least one acquisition area on the pixel array, and collecting biometric information on the at least one acquisition area. It can be seen that, since the generated at least one acquisition area is an area where a part of pixels on the image sensor is located, by using the solution of the present application, only pixels included in the generated collection area are scanned and collected, and The corresponding biometric information is obtained, and it is not necessary to scan and collect all the pixels included in the image sensor, thereby reducing the amount of data collected, reducing the collection time, and improving the collection efficiency.

Brief description of the drawing

DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are merely Some embodiments of the present application can also obtain other figures from those skilled in the art without departing from the drawings.

1 is a schematic flow chart of an embodiment of a biometric information collecting method provided by the present application;

2 is a schematic flow chart of an embodiment of step 104 in the embodiment shown in FIG. 1 provided by the present application;

3 is a schematic structural diagram of a functional unit of an embodiment of a terminal provided by an embodiment of the present application;

4 is a schematic structural diagram of an embodiment of a terminal provided by an embodiment of the present application.

Embodiments of the invention

[0027] In the following description, for purposes of illustration and description However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the application. [0028] In order to explain the technical solutions described in the present application, the following description will be made by way of specific embodiments.

[0029] Embodiment 1

[0030] The embodiment of the present application is applied to a terminal having an image sensor, the image sensor includes a pixel array composed of two or more pixels, and each pixel in the pixel array senses biometric information to be collected.吋, the pixel signal generated by the pixel is greater than a preset threshold.

[0031] FIG. 1 is a schematic flow chart of an embodiment of a biometric information collecting method provided by the present application, which is described in detail as follows:

[0032] in step 101, detecting pixel signals generated by pixels of n preset positions in the pixel array, where

, n is a natural number, and the value of the n is related to the number of pixels included in the pixel array.

[0033] The embodiment of the present application is applied to a terminal having an image sensor whose resolution is matched with a display screen of the terminal, and the image sensor includes a pixel array composed of two or more pixels. The pixel array is configured to collect feature information (image information) of the object to be collected that is in contact with the display screen, and each pixel in the pixel array senses biometric information of the object to be collected, and the pixel is generated. The pixel signal is greater than a preset threshold.

[0034] The pixel signal is a digital signal obtained by corresponding processing (eg, amplification, filtering, analog-to-digital conversion) of photogenerated charges generated by respective pixels on the pixel array. The pixel signal may reflect image information of an object to be acquired at a corresponding position on a display screen corresponding to the pixel. For example, the user's finger approaches and contacts the display screen, and the pixel signal generated by the pixel corresponding to the contact area represents the image information of the user's finger.

[0035] It should be noted that, by multiple pre-sampling of the object to be collected, the preset threshold may be determined, so that when the pixel signal generated by a certain pixel is detected to be greater than the preset threshold, the pixel is sensed. Biometric information to be collected.

[0036] The pixel array may be connected to a control chip, and the pixel signal generated by each pixel in the pixel array is detected by the control chip. The control chip may be connected to the pixel array through a circuit board, such as a Flexible Printed Circuit (FPC) or a Printed Circuit Board (PCB). The pixel array may also be a control chip. Integrated, for example by CO G (Chip On Glass) packaging.

[0037] Specifically, the n preset positions may be scattered pixel points of the pixel array that are equally spaced In the location. For example, for a 1000*3000 pixel array, a preset position can be set for each of 99 pixels in the horizontal and vertical directions, and a total of 300 preset positions are required to detect the pixel signals generated by the pixels of the 300 preset positions. , thereby determining a target pixel of the 300 pixels that senses biometric information to be acquired.

[0038] It should be noted that the more the number of spaced pixels in the adjacent preset position, the smaller the value of n is, and the number of the spaced pixels can be flexibly set according to actual conditions, and only needs to meet four adjacent preset positions. The area of the area formed by the pixels is smaller than the area of the object to be collected. For example, after the fingerprint information is collected, the area of the fingerprint area is generally within 200*200 pixels, and then the number of spaced pixels of adjacent preset positions may be set to not exceed 200 pixels.

[0039] It should be noted that the value of the n is also related to the number of pixels included in the pixel array. When the number of spaced pixels in the adjacent preset position is constant, the number of pixels included in the pixel array is larger. More, the value of n is larger.

[0040] In step 102, based on the detected pixel signals generated by the pixels of the n preset positions in the pixel array, the generated pixels whose pixel signals are greater than the preset threshold are determined as the target pixels.

[0041] In the embodiment of the present application, by detecting a pixel signal generated by pixels of n preset positions in the pixel array, after detecting that the pixel signal is greater than a preset threshold, determining that the pixel is sensed to be collected The target pixel of the biometric information.

[0042] It should be noted that, in the embodiment of the present application, the detection of the target pixel on the pixel array, and the collection of the biometric information on the collection area on the pixel array are all detected by detecting each pixel on the pixel array. The pixel signal is carried out without the need of other sensors, which simplifies the integrated design of the terminal and reduces the cost of the terminal and terminal design.

[0043] In step 103, location information of each target pixel in the pixel array is obtained.

[0044] In the embodiment of the present application, after determining the target pixel in the pixels in each preset position, acquiring location information of each target pixel in the pixel array, to further determine the collection region according to the location information of each target pixel. .

[0045] Optionally, after the step 102, the biometric information collection method further includes:

[0046] detecting the number of target pixels;

[0047] Step 103 is specifically: if the number of the detected target pixels is greater than a second preset value, acquiring Position information of each target pixel in the pixel array.

[0048] In the embodiment of the present application, since the biometric information is collected, in order to improve the accuracy of collecting the biometric information, the biometric information is generally performed after the object to be collected is in full contact with the display screen of the terminal. collection. Then, since the object to be collected is in full contact with the display screen, the corresponding target pixels on the pixel array also reach a certain number. Therefore, it is possible to determine whether the object to be collected is in full contact with the display screen by detecting the number of target pixels. In other words, if the target pixels in the pixel array do not reach a certain number, it is not suitable for starting the collection of biometric information.

[0049] The second preset value may be flexibly set according to actual conditions, and is not limited herein.

[0050] Illustratively, it is assumed that the fingerprint information of the terminal user is to be collected. If the size of the fingerprint information to be collected is about 200*200, the number of pixels in the pixel array adjacent to the preset position is 20 pixels (including Horizontal and vertical), then, it can be seen that, after the end user's finger touches the display screen, the fingerprint area can cover pixels of about 10 preset positions, that is, the number of detected target pixels should be 10. Then, if the number of detected target pixels is small, for example, the number of detected target pixels is three, it can be regarded that the object to be collected is not in full contact with the display screen of the terminal, and the biometric information is not collected.

[0051] In step 104, at least one acquisition region is generated on the pixel array based on location information of each target pixel in the pixel array.

[0052] In the embodiment of the present application, at least one collection area is generated on the pixel array based on position information of each target pixel in the pixel array, where the generated collection area includes a location where each target pixel is located. .

[0053] Optionally, the collection area may be a regular shaped area, such as a rectangular area.

[0054] It should be noted that the collection area is located in the pixel array, and an area of the collection area is smaller than an area of the pixel array.

[0055] Optionally, the pixel array is divided into two or more macro pixel blocks in advance, each macro pixel block includes a preset number of adjacent pixels, and each macro pixel block includes at least one preset position. Pixel. Specifically, each macro pixel block is set to include at least one pixel of a preset position. For example, the pixel array includes 1000*1000 pixels. In the pixel array, a preset position is set every 99 pixels in the horizontal direction and the vertical direction, and 10*10 or 100 preset positions are set in total. Then, the pixel array can be divided into 100 macro pixel blocks, each macro pixel block includes 10*10 or 100 adjacent pixels, and each macro pixel block A pixel including at least one preset position.

[0056] It should be noted that the number of pixels included in the macro pixel block is related to the number of spaced pixels of adjacent preset positions, and the size of the macro pixel block is smaller than the contact area of the object to be collected on the display screen.

2 is a schematic flow chart of an embodiment of step 104 in the embodiment shown in FIG. 1 provided by the present application, which is described in detail as follows:

[0058] Step 201: Determine a macro pixel block where each target pixel is located;

[0059] Step 202: Connect adjacent macro pixel blocks in the determined macro pixel block to obtain at least one connected region.

[0060] Step 203: Generate an acquisition area including the connected area on the pixel array based on each connected area.

In the embodiment of the present application, the macro pixel block in which each target pixel is located is determined according to the position information of each target pixel. If the determined macro pixel block has adjacent macro pixel blocks, the adjacent macro pixel blocks are connected to each other to obtain at least one connected region. Based on each connected region, an acquisition region including the connected region is generated on the pixel array. Thereby at least one acquisition area is obtained.

[0062] Optionally, in order to further improve the accuracy of the generated collection area, the foregoing step 203 may be: [0063] based on the connected area of each of the included macro pixel blocks being greater than the first preset value, An acquisition area including the connected area is generated on the pixel array.

[0064] In the embodiment of the present application, the number of the macro pixel blocks included in the obtained connected area is not greater than the first preset value, indicating that the connected area may not belong to the collection area, or the object to be collected is not related to the display screen. Fully contacted, so the collection of biometric information is not yet available.

[0065] In step 105, biometric information is collected for the at least one acquisition area.

[0066] In the embodiment of the present application, after the collection area is generated, biometric information is collected on the generated collection area, and since only pixels in the collection area need to be scanned for biometric information collection, Reduce data processing, reduce data processing time, and improve collection efficiency.

[0067] Optionally, each of the at least one of the acquired acquisition regions is a rectangular region.

[0068] Illustratively, the collection area is a rectangular area, and according to position information of the target pixel, one pixel on the pixel array is used as a coordinate origin, and each pixel on the pixel array is used as a coordinate point. , in the coordinates of the target pixel, the minimum abscissa is minX, the minimum ordinate is minY, and the maximum cross The coordinate is maxX, and the maximum ordinate is maxY, then a rectangular collection area can be generated according to the preset formula.

, the preset formula is:

Al = (minX-a, minY-a)

A2= (maxX+a, minY-a)

A3=(minX-a, maxY+a)

A4= (maxX+a, maxY+a)

[0073] wherein the Al, A2, A3, and A4 are coordinates of four vertices of the generated rectangular region, where a is the number of spaced pixels of adjacent preset positions.

[0074] In the embodiment of the present application, the image sensor may be used to collect fingerprint information, finger vein information, palm print information, or palm vein information.

[0075] It can be seen that, by detecting a pixel signal generated by pixels of n preset positions in the pixel array, the target pixel of the biometric information to be collected on the image sensor may be determined, based on the target. Position information of the pixel, generating at least one acquisition area on the pixel array, and collecting biometric information on the at least one acquisition area. It can be seen that, since the generated at least one acquisition area is an area where a part of pixels on the image sensor is located, the present application only needs to scan and collect pixels included in the generated collection area, and obtain corresponding Biometric information, without having to scan and collect all the pixels included in the image sensor, thereby reducing the amount of data collected, reducing the collection time, and improving the collection efficiency.

It should be understood that the size of the sequence numbers of the steps in the foregoing embodiments does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the implementation process of the embodiments of the present application. Any restrictions.

[0077] Embodiment 2

3 is a schematic structural diagram of a functional unit of an embodiment of a terminal provided by an embodiment of the present application. For convenience of description, only parts related to the embodiment of the present application are shown, which are as follows:

[0079] the terminal has an image sensor, and the image sensor includes a pixel array composed of two or more pixels, wherein each pixel in the pixel array senses biometric information to be acquired, and the pixel is generated. The pixel signal is greater than a preset threshold.

[0080] As shown in FIG. 3, the terminal 3 includes: a pixel signal detecting unit 31, a target pixel determining unit 32, and a location letter. The information acquisition unit 33, the acquisition area generation unit 34 and the acquisition unit 35.

a pixel signal detecting unit 31, configured to detect a pixel signal generated by pixels of n preset positions in the pixel array, where n is a natural number, and the value of the n is included in the pixel array The number of pixels is related;

[0082] The target pixel determining unit 32 is configured to determine, according to the pixel signal generated by the pixels of the n preset positions in the pixel array detected by the pixel signal detecting unit 31, the pixel whose generated pixel signal is greater than the preset threshold. Target pixel

a location information acquiring unit 33, configured to acquire location information of each target pixel in the pixel array; [0084] an acquisition region generating unit 34, configured to use, according to each target pixel acquired by the location information acquiring unit 33, Position information in the pixel array, generating at least one acquisition area on the pixel array;

The collecting unit 35 is configured to perform biometric information collection on the at least one collection area generated by the collection area generating unit 34.

[0086] Optionally, the pixel array is divided into two or more macro pixel blocks in advance, each macro pixel block includes a preset number of adjacent pixels, and each macro pixel block includes at least one preset position. The pixel; the biometric information collecting device 3 further includes:

a macro pixel block determining unit, configured to determine, according to position information of each target pixel in the pixel array acquired by the position information acquiring unit 33, a macro pixel block in which each target pixel is located;

[0088] a connected area generating unit, configured to connect adjacent macro pixel blocks in the macro pixel block determined by the macro pixel block determining unit to obtain at least one connected area;

[0089] The collection area generating unit 34 is specifically configured to: generate, according to each connected area obtained by the connected area generating unit, an acquisition area including the connected area on the pixel array.

[0090] Optionally, the collection area generating unit is further configured to:

[0091] An acquisition region including the connected region is generated on the pixel array based on a connected region in which the number of macro pixel blocks included is greater than a first preset value.

[0092] It can be seen that, by detecting a pixel signal generated by pixels of n preset positions in the pixel array, the target pixel of the biometric information to be acquired on the image sensor may be determined, Position information of the target pixel, generating at least one acquisition area on the pixel array, and performing biometric information collection on the at least one acquisition area. It can be seen that due to the generated One less acquisition area is the area where a part of the pixels on the image sensor is located. Therefore, the present application only needs to scan and collect the pixels included in the generated collection area, and obtain corresponding biometric information without having to image the image sensor. All the included pixels are scanned and collected, which reduces the amount of data collected, reduces the collection time, and improves the collection efficiency.

Embodiment 3

4 is a schematic structural diagram of an embodiment of a terminal provided by an embodiment of the present application. As shown in FIG. 4, the terminal 4 of this embodiment includes: a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and operable on the processor 40. The processor 40 executes the computer program 42 to implement the steps in the above embodiments of the biometric information collecting method, such as step 101 to step 105 shown in FIG. Alternatively, the processor 40 executes the computer program 42 to implement the functions of the modules/units in the above-described respective device embodiments, such as the functions of the units 31 to 35 shown in FIG.

[0095] Illustratively, the computer program 42 may be divided into one or more modules/units, the one or more modules/units being stored in the memory 41, and by the processor 40 is executed to complete the application. The one or more modules/units may be a series of computer program instruction segments capable of performing a particular function, the instruction segments being used to describe the execution of the computer program 42 in the terminal 4. For example, the computer program 42 may be divided into a pixel signal detecting unit, a target pixel determining unit, a position information acquiring unit, an acquisition region generating unit, and an extracting unit, and the specific functions of each unit are as follows:

[0096] a pixel signal detecting unit, configured to detect a pixel signal generated by pixels of n preset positions in the pixel array;

[0097] a target pixel determining unit, configured to determine, according to a pixel signal generated by pixels of n preset positions in the pixel array detected by the pixel signal detecting unit, a pixel whose generated pixel signal is greater than the preset threshold Target pixel

a location information acquiring unit, configured to acquire location information of each target pixel in the pixel array; [0099] an acquisition region generating unit, configured to acquire, according to the target pixel acquired by the location information acquiring unit, the pixel Position information in the array, generating at least one acquisition area on the pixel array;

[0100] The collecting unit is configured to perform biometric information collection on the at least one collection area generated by the collection area generating unit. [0101] The terminal 4 may be a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud server. The terminal may include, but is not limited to, the processor 40 and the memory 41. It will be understood by those skilled in the art that FIG. 4 is merely an example of the terminal 4 and does not constitute a limitation of the terminal 4, and may include more or less components than those illustrated, or some components may be combined, or different components, such as The terminal may also include an input/output device, a network access device, a bus, and the like.

The processor 40 may be a central processing unit (CPU), or may be another general-purpose processor, a digital signal processor (DSP), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array

(Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

[0103] The memory 41 may be an internal storage unit of the terminal 4, such as a hard disk or a memory of the terminal 4. The memory 41 may also be an external storage device of the terminal 4, such as a plug-in hard disk equipped with the terminal 4, a smart memory card (SMC), and a Secure Digital (SD) card. Flash card, etc. Further, the memory 41 may also include both an internal storage unit of the terminal 4 and an external storage device. The memory 41 is used to store the computer program and other programs and data required by the terminal. The memory 41 can also be used to temporarily store data that has been output or is about to be output.

[0104] It will be clearly understood by those skilled in the art that, for convenience and brevity of description, only the division of each functional unit and module described above is exemplified. In practical applications, the above functions may be assigned differently according to needs. The functional unit and the module are completed, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit, and the integrated unit may be implemented by hardware. Formal implementation can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the purpose of distinguishing from each other, and are not intended to limit the scope of protection of the present application. For the specific working process of the unit and the module in the foregoing system, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again. [0105] In the foregoing embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed or described in the specific embodiments may be referred to the related descriptions of other embodiments.

[0106] Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

[0107] In the embodiments provided by the present application, it should be understood that the disclosed apparatus/terminals and methods may be implemented in other manners. For example, the device/terminal embodiment described above is merely illustrative. For example, the division of the module or unit is only a logical function division, and the actual implementation may have another division manner, such as multiple units or Components can be combined or integrated into another system, or some features can be ignored, or not executed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.

[0108] The unit described as a separate component may or may not be physically distributed, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place, or may be distributed to multiple On the network unit. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

[0109] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0110] The integrated module/unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the present application implements all or part of the processes in the foregoing embodiments, and may also be completed by a computer program to instruct related hardware. The computer program may be stored in a computer readable storage medium. After the program is executed by the processor, the steps of the various method embodiments described above can be implemented. The computer program includes computer program code, and the computer program code may be in the form of source code, Like code form, executable file or some intermediate form. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read-Only Memory (ROM). , Random Access Memory (RAM), electrical carrier signals, telecommunications signals, and software distribution media. It should be noted that the content contained in the computer readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in a jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, computer readable media It does not include electrical carrier signals and telecommunication signals.

The above-mentioned embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and the modifications or substitutions do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in Within the scope of protection of this application.

Claims

Claim

[Claim 1] A biometric information collecting method, which is applied to a terminal having an image sensor, the image sensor including a pixel array composed of two or more pixels, each pixel in the pixel array After sensing the biometric information to be collected, the pixel signal generated by the pixel is greater than a preset threshold;

The biometric information collection method includes:

Detecting pixel signals generated by pixels of n preset positions in the pixel array, where n is a natural number, and the value of the n is related to the number of pixels included in the pixel array; a pixel signal generated by the pixels of the n preset positions in the pixel array, the generated pixel signal having a pixel signal greater than the preset threshold is determined as a target pixel; obtaining position information of each target pixel in the pixel array; Position information of the pixel in the pixel array, generating at least one acquisition area on the pixel array;

Collecting biometric information for the at least one acquisition area.

[Claim 2] The biometric information collecting method according to claim 1, wherein the pixel array is divided into two or more macro pixel blocks in advance, and each macro pixel block includes a preset number of adjacent pixels. And each macro pixel block includes at least one pixel of a preset position; and the generating at least one acquisition area on the pixel array includes:

Determining a macro pixel block in which each target pixel is located;

And connecting adjacent macro pixel blocks in the determined macro pixel block to obtain at least one connected region;

An acquisition area including the connected area is generated on the pixel array based on each connected area.

[Claim 3] The biometric information collecting method according to claim 2, wherein the generating an acquisition area including the connected area on the pixel array based on each connected area includes:

An acquisition region including the connected region is generated on the pixel array based on a connected region in which the number of macro pixel blocks included is greater than a first preset value.

[Claim 4] The biometric information collecting method according to any one of claims 1 to 3, characterized in that

And determining, by the pixel that the generated pixel signal is greater than the preset threshold, as the target pixel, the biometric information collecting method further includes:

Detecting the number of target pixels;

And acquiring the location information of each target pixel in the pixel array, where: if the number of the detected target pixels is greater than a second preset value, acquiring location information of each target pixel in the pixel array.

[Claim 5] The biometric information collecting method according to any one of claims 1 to 3, characterized in that

Each of the generated at least one acquisition area is a rectangular area.

[Claim 6] A terminal, wherein the terminal has an image sensor, the image sensor includes a pixel array composed of two or more pixels, and each pixel in the pixel array is sensed The collected biometric information 吋, the pixel signal generated by the pixel is greater than a preset threshold;

The terminal includes:

a pixel signal detecting unit, configured to detect a pixel signal generated by pixels of n preset positions in the pixel array, where n is a natural number, and a value of the n is related to a number of pixels included in the pixel array;

a target pixel determining unit, configured to determine, according to a pixel signal generated by pixels of _n preset positions in the pixel array detected by the pixel signal detecting unit, a pixel whose generated pixel signal is greater than the preset threshold as a target pixel ;

a location information acquiring unit, configured to acquire location information of each target pixel in the pixel array;

An acquisition area generating unit, configured to generate at least one acquisition area on the pixel array based on position information of each target pixel acquired by the position information acquiring unit in the pixel array;

And an acquiring unit, configured to collect biometric information from the at least one collection area generated by the collection area generating unit.

[Claim 7] The terminal according to claim 6, wherein the pixel array is divided in advance For more than two macro pixel blocks, each macro pixel block includes a preset number of adjacent pixels, and each macro pixel block includes at least one pixel of a preset position;

The terminal further includes:

a macro pixel block determining unit, configured to determine, according to position information of each target pixel in the pixel array acquired by the position information acquiring unit, a macro pixel block in which each target pixel is located; a connected area generating unit, configured to: The adjacent macro pixel blocks in the macro pixel block determined by the macro pixel block determining unit are connected to each other to obtain at least one connected area. The collecting area generating unit is specifically configured to: each connected area obtained by the connected area generating unit, Generating an acquisition region including the connected region on the pixel array

[Claim 8] The terminal according to claim 7, wherein the collection area generating unit is further configured to:

[Claim 9] A terminal, comprising: a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program The steps of the method according to any of claims 1 to 5 are carried out.

[Claim 10] A computer readable storage medium storing a computer program, wherein the computer program is executed by a processor, implementing the method of any one of claims 1 to 5 The steps of the method.