CN107451453B - Unlocking control method and related product - Google Patents
Unlocking control method and related product Download PDFInfo
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- CN107451453B CN107451453B CN201710632732.6A CN201710632732A CN107451453B CN 107451453 B CN107451453 B CN 107451453B CN 201710632732 A CN201710632732 A CN 201710632732A CN 107451453 B CN107451453 B CN 107451453B
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- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
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- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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Abstract
The embodiment of the invention discloses an unlocking control method and a related product, which comprise the following steps: determining a region to be acquired of the face image; acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired; and executing unlocking operation when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively. The embodiment of the invention is beneficial to improving the safety and the success rate of the unlocking operation of the mobile terminal.
Description
Technical Field
The invention relates to the technical field of mobile terminals, in particular to an unlocking control method and a related product.
Background
With the popularization and application of smart phones in a large number, smart phones can support more and more applications and have more and more powerful functions, and smart phones develop towards diversification and individuation and become indispensable electronic products in user life.
At present, most of smart phones adopt biological information unlocking schemes, such as face unlocking, iris unlocking and the like, the security coefficient of the biological information unlocking schemes seriously affects the security of the smart phone, and due to the activity of a human body, when a face or an iris is obtained, data acquisition is incomplete probably due to dynamic activity of a user, and at this time, how to ensure accurate and safe unlocking of the biological information unlocking schemes becomes a problem which needs to be rigorously solved.
Disclosure of Invention
The embodiment of the invention provides an unlocking control method and a related product, aiming at improving the safety and the success rate of unlocking operation of a mobile terminal.
In a first aspect, an embodiment of the present invention provides a mobile terminal, including a processor, and a biological image capturing device and a memory connected to the processor, wherein,
the biological image acquisition device is used for acquiring at least one biological image of an area to be acquired;
the memory is used for storing a preset biological template;
the processor is configured to determine a region to be acquired of the face image, acquire first type information and second type information of at least one type of biological information of the at least one type of biological image, and execute an unlocking operation when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template.
In a second aspect, an embodiment of the present invention provides an unlocking control method, including:
determining a region to be acquired of the face image;
acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired;
and executing unlocking operation when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively.
In a third aspect, an embodiment of the present invention provides a mobile terminal, including a processing unit and a collecting unit,
the processing unit is used for determining a region to be acquired of the face image; the acquisition unit is used for acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired; and executing unlocking operation when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological templates respectively.
In a fourth aspect, an embodiment of the present invention provides a mobile terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing steps of any of the methods in the second aspect of the present invention.
In a fifth aspect, the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in any one of the methods in the second aspect of the present invention, and the computer includes a mobile terminal.
In a sixth aspect, the present invention provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in any one of the methods according to the second aspect of the embodiments of the present invention. The computer program product may be a software installation package, the computer comprising a mobile terminal.
It can be seen that, in the embodiment of the invention, the mobile terminal firstly determines the area to be acquired of the face image; secondly, acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired; and finally, when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively, executing unlocking operation. Therefore, the mobile terminal collects two types of information of at least one type of biological information of the face image after determining the area to be collected, instead of only collecting conventional face information, the situation that the face data collected after the face part is shielded is less and cannot be matched successfully is avoided, the unlocking matching success rate of the mobile terminal is favorably improved, and when the determined area to be collected is smaller, the two types of information are collected instead of simply reducing the matching degree, so that the safety of the mobile terminal is favorably improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 2A is a schematic flowchart of an unlocking control method according to an embodiment of the present invention;
fig. 2B is a schematic diagram of a face image in a preview image of a mobile terminal according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of another unlocking control method disclosed in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a mobile terminal disclosed in the embodiment of the present invention;
fig. 5 is a block diagram of functional units of a mobile terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The Mobile terminal according to the embodiment of the present invention may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like, which have wireless communication functions. For convenience of description, the above-mentioned devices are collectively referred to as a mobile terminal.
The mobile terminal described in the embodiment of the invention is provided with a biological image acquisition device, the biological image acquisition device specifically comprises an iris image acquisition device and a face image acquisition device, wherein the iris image acquisition device can comprise an infrared light source and an iris camera, the infrared light source is used for emitting infrared light to irradiate the iris of a user to form reflected light, the iris camera is used for acquiring the reflected light to form an iris image, and the face image acquisition device can be a universal camera module, such as a front camera. The following describes embodiments of the present invention in detail.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a mobile terminal 100 according to an embodiment of the present invention, where the mobile terminal 100 includes: the mobile terminal comprises a shell, a touch display screen, a main board, a battery and an auxiliary board, wherein an infrared light source 21, an iris camera 22, a front camera 23, a processor 110, a memory 120, a camera driving device 130, a SIM card slot and the like are arranged on the main board, a vibrator, an integrated sound cavity and a VOOC flash charging interface are arranged on the auxiliary board, the infrared light source 21 and the iris camera 22 form an iris image acquisition device of the mobile terminal 100, the front camera 23 forms a face image acquisition device of the mobile terminal 100, the iris image acquisition device and the face image acquisition device are collectively called a biological image acquisition device of the mobile terminal 100, wherein,
the memory 120 is used for storing a preset biological template;
the processor 110 is configured to determine a region to be acquired of the face image;
the processor 110 is configured to acquire, by the biological image acquisition device, first type information and second type information of at least one type of biological information of the face image corresponding to the region to be acquired;
the biological image acquisition device is used for acquiring at least one biological image of an area to be acquired;
the processor 110 obtains the at least one type of biological information by performing operations such as preprocessing, feature point extraction, etc. on the at least one type of biological image acquired by the biological image acquisition device.
When the biological image acquisition device is an iris image acquisition device, the infrared light source 21 is used for emitting infrared light to irradiate the iris of a user to form reflected light, the iris camera 22 is used for collecting the reflected light to form an iris image, and the processor 110 acquires the iris image and then executes processing procedures such as iris image quality evaluation, iris region positioning (including coarse positioning and fine positioning), iris preprocessing, iris feature point extraction, iris template generation and the like on the iris image.
The processor 110 is configured to execute an unlocking operation when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological templates, respectively.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal by using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 120 and calling data stored in the memory 120, thereby integrally monitoring the mobile terminal. Alternatively, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 980.
The memory 120 may be used to store software programs and modules, and the processor 110 executes various functional applications and data processing of the mobile terminal by operating the software programs and modules stored in the memory 120. The memory 120 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the mobile terminal, and the like. Further, the memory 120 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
It can be seen that, in the embodiment of the invention, the mobile terminal firstly determines the area to be acquired of the face image; secondly, acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired; and finally, when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively, executing unlocking operation. Therefore, the mobile terminal collects two types of information of at least one type of biological information of the face image after determining the area to be collected, instead of only collecting conventional face information, the situation that the face data collected after the face part is shielded is less and cannot be matched successfully is avoided, the unlocking matching success rate of the mobile terminal is favorably improved, and when the determined area to be collected is smaller, the two types of information are collected instead of simply reducing the matching degree, so that the safety of the mobile terminal is favorably improved.
In one possible example, in the aspect of determining the region to be acquired of the facial image, the processor 110 is specifically configured to: detecting preset feature points contained in the face image in the preview image; and the number of the preset feature points of each area in a preset area is determined; and determining the preset area with the number of the preset characteristic points larger than a preset threshold value as the area to be acquired.
In one possible example, the processor 110 is further configured to, before determining the region of the face image to be acquired: acquiring all feature points of the face image, wherein the all feature points comprise first type feature points corresponding to the first type information and second type feature points corresponding to the second type information; and dividing the face image into a plurality of regions according to the all feature points; and a biological template for generating each region from the feature points of each region in the plurality of regions;
the memory 120 is configured to store all the feature points as the preset feature points; and storing the plurality of regions as the predetermined regions; and storing the biological templates of the regions as the preset biological templates of the regions.
In one possible example, in the above-mentioned aspect of acquiring the first type information and the second type information of the at least one type of biological information of the face image corresponding to the region to be acquired, the processor 120 is specifically configured to: determining the position parameter and the area parameter of the area to be acquired; and determining the number and type of the at least one type of biological information according to the position parameter and the area parameter of the region to be acquired; and the first type information and the second type information for acquiring the at least one type of biological information through the biological image acquisition device according to the number and the type of the at least one type of biological information.
In a possible example, in terms of performing an unlocking operation when the matching of the first type information and the second type information of the at least one type of biological information with the corresponding biological template is successful, the processor 120 is specifically configured to: determining a first matching degree threshold value of the first type information and a second matching degree threshold value of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be acquired; and matching the first type information and the second type information of the at least one type of biological information with the corresponding biological templates, respectively; and the unlocking unit is used for executing unlocking operation when the matching degree of the first type information of the at least one type of biological information and the corresponding preset biological template is greater than or equal to the first matching degree threshold value, and the matching degree of the second type information and the corresponding preset biological template is greater than or equal to the second matching degree threshold value.
Referring to fig. 2A, fig. 2A is a schematic flowchart of an unlocking control method according to an embodiment of the present invention, which is applied to a mobile terminal, and as shown in the figure, the unlocking control method includes:
s201, the mobile terminal determines a region to be acquired of a face image;
in one possible example, before the mobile terminal detects the face image, the method further includes:
detecting an event to be unlocked;
and opening a front camera to capture a human face image.
The event to be unlocked may be, for example, a desktop event to be unlocked, an application event to be unlocked, a file event to be unlocked, or the like, which is not limited herein. The event to be unlocked by the desktop refers to an event to be unlocked for locking the desktop, the event to be unlocked by the application refers to an event to be unlocked for a specific operation of the application, such as application starting, application deleting and the like, and the event to be unlocked by the file refers to an event to be unlocked for the file, such as an event to be unlocked for a target file.
The trigger condition for detecting the event to be unlocked by the mobile terminal may be that the mobile terminal detects the event to be unlocked of the application to be unlocked, where the event to be unlocked may be specifically triggered by touch operation, pressing operation, voice operation, and the like of the user, for example, for the mobile terminal in the off-screen standby state, pressing a power key or a Home key triggers the event to be unlocked, where the trigger condition is not limited.
In a possible example, the determining the region to be acquired of the face image includes:
detecting preset feature points contained in the face image in the preview image;
determining the number of the preset feature points of each area in a preset area;
and determining the preset area with the number of the preset characteristic points larger than a preset threshold value as the area to be acquired.
The preset feature points include conventional feature points and personalized feature points, the conventional feature points are general feature points required by a face recognition technology, such as sizes, positions, distances and the like of facial image facial contour like eyes, nose wings, mouth corners, ears and the like, and the personalized feature points are feature points of a part of faces, such as feature points like birthmarks, black nevi, scars and the like.
The preset area can be divided by a system, or the preset area suitable for the distribution of the total amount of the user characteristic points and the positions of the characteristic points can be divided by the mobile terminal through analyzing the characteristic points of the face when the face template is prestored by the user.
The preset area with the number of the preset feature points being greater than the preset threshold indicates that the mobile terminal can acquire most of the feature points of the preset area, and when the number of the preset feature points is less than the preset threshold, it indicates that most of the area of the preset area is blocked and the necessary feature points cannot be acquired, so that the preset area with the number of the preset feature points being greater than the preset threshold is determined to be the area to be acquired, and the preset area with the number of the preset feature points being greater than the preset threshold may be one preset area or a plurality of preset areas, as shown in fig. 2B, the eyebrow area is blocked by hairs, and thus the area to be acquired may be an area below the eyebrows.
It can be seen that, in this example, the mobile terminal divides the face into a plurality of preset regions, and according to the number of feature points in the plurality of preset regions, the region with the large number of feature points is determined as the region to be acquired, so that the mobile terminal only needs to extract information from the region to be acquired, thereby avoiding the time consumption of the mobile terminal for extracting information from the whole face when a part of the region is blocked and the feature points cannot be extracted, and being beneficial to improving the convenience and speed of acquiring the feature points of the mobile terminal.
S202, the mobile terminal collects first type information and second type information of at least one type of biological information of the face image corresponding to the area to be collected;
wherein the at least one piece of biological information comprises face information and/or iris information.
As shown in fig. 2B, the first type of information is conventional feature point information, the second type of information is personalized feature point information, for example, the conventional feature point information of the face image may be information such as size, position, distance, and the like of facial image five-sense-organ outlines such as eyes, nose wings, mouth corners, ears, and the personalized feature point information of the face image may be feature points such as birthmarks, black nevi, scars, and the like.
The mobile terminal can classify the detail features into first type information and second type information due to the fact that the iris has various detail features, for example, the conventional feature point information of the iris image can be set to be the crown, the crystal, the filament, the spot and the structure of the iris, and the personalized feature point information of the iris image is the pit and the pit of the iris.
In one possible example, the acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the region to be acquired includes:
determining the position parameter and the area parameter of the area to be acquired;
determining the number and the type of the at least one type of biological information according to the position parameter and the area parameter of the region to be acquired;
the first type information and the second type information of the at least one type of biological information are collected according to the number and the type of the at least one type of biological information.
When the area parameter is large, enough characteristic points of the face image can be obtained, only face information can be obtained, namely the number is 1, and the type is the face information; when the area parameter is small and the position parameter comprises the position of human eyes, two kinds of information, namely iris information and human face information, can be acquired, and the unlocking safety is guaranteed.
Therefore, in this example, the mobile terminal determines the number and the type of the at least one collected biological information according to the position parameter and the area parameter of the area to be collected, which is beneficial to improving the flexibility and the accuracy of collecting the biological information when the mobile terminal is unlocked and controlled.
And S203, when the mobile terminal successfully matches the first type information and the second type information of the at least one type of biological information with the corresponding preset biological templates, the mobile terminal performs an unlocking operation.
In one possible example, when the first type information and the second type information of the at least one type of biometric information are successfully matched with the corresponding biometric templates, the performing an unlocking operation includes:
determining a first matching degree threshold value of the first type information and a second matching degree threshold value of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be acquired;
matching the first type information and the second type information of the at least one type of biological information with the corresponding biological templates, respectively;
and when the matching degree of the first type information of the at least one type of biological information and the corresponding preset biological template is greater than or equal to the first matching degree threshold value, and the matching degree of the second type information and the corresponding preset biological template is greater than or equal to the second matching degree threshold value, performing unlocking operation.
The implementation manner of the mobile terminal executing the unlocking operation may be to switch the current state of the mobile terminal to an unlocking state, where the current state includes a screen locking state, a disabled state, and the like, and is not limited here.
Wherein the set of biological templates comprises at least one of: the iris information templates comprise iris information templates of first type information and iris information templates of second type information, and the face information templates comprise face information templates of first type information and face information templates of second type information.
The iris data template refers to a set of corresponding relations between a first type characteristic point position corresponding to the first type information of the iris of the registered user, a second type characteristic point position corresponding to the second type information and a characteristic value (the characteristic value can be capacitance, inductance, voltage, current, a relative value and the like) of a specific point.
The face data template refers to a set of corresponding relations between a first type characteristic point position corresponding to the first type information of the registered user face, a second type characteristic point position corresponding to the second type information and a characteristic value (the characteristic value can be capacitance, inductance, voltage, current, relative value and the like) of a specific point.
The mobile terminal can classify the preset feature points of the region to be acquired into first type feature points corresponding to the first type information of the face image and second type feature points corresponding to the second type information, and first type feature points corresponding to the first type information of the iris image and second type feature points corresponding to the second type information, and sets the matching degree threshold value of each type of information according to the number of each feature point.
Therefore, in the example, the mobile terminal determines each matching degree threshold according to the number of the preset feature points of the area to be acquired, and performs the unlocking operation through each matching degree threshold, so that the mobile terminal is ensured to be safe, and meanwhile, the matching fineness and flexibility of the mobile terminal are improved.
It can be seen that, in the embodiment of the invention, the mobile terminal firstly determines the area to be acquired of the face image; secondly, acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired; and finally, when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively, executing unlocking operation. Therefore, the mobile terminal collects two types of information of at least one type of biological information of the face image after determining the area to be collected, instead of only collecting conventional face information, the situation that the face data collected after the face part is shielded is less and cannot be matched successfully is avoided, the unlocking matching success rate of the mobile terminal is favorably improved, and when the determined area to be collected is smaller, the two types of information are collected instead of simply reducing the matching degree, so that the safety of the mobile terminal is favorably improved.
In a possible example, before determining the region to be acquired of the face image, the method further includes:
acquiring all feature points of the face image, wherein the all feature points comprise first type feature points corresponding to the first type information and second type feature points corresponding to the second type information;
storing all the characteristic points as the preset characteristic points;
dividing the face image into a plurality of areas according to all the characteristic points;
storing the plurality of areas as the preset areas;
generating a biological template of each region according to the characteristic points of each region in the plurality of regions;
and storing the biological templates of the areas as the preset biological templates of the areas.
When the face template is prestored by the user, the mobile terminal analyzes and divides a plurality of areas suitable for the total amount of the user feature points and the distribution of the feature point positions through the feature points of the face.
Therefore, in the example, the mobile terminal prestores preset feature points according to all feature points of the face image, divides the face image into a plurality of regions, and further generates biological templates of the regions, and when the mobile terminal is divided into the first type information and the second type information for matching, the mobile terminal only needs to be matched with the template of the corresponding region, so that the unlocking matching speed is favorably improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating an unlocking control method according to an embodiment of the present invention, and the method is applied to a mobile terminal. As shown in the figure, the unlocking control method includes:
and S301, the mobile terminal detects the preset feature points contained in the face image in the preview image.
S302, the mobile terminal determines the number of the preset feature points in each of the preset areas.
And S303, the mobile terminal determines the preset area with the number of the preset feature points larger than a preset threshold value as the area to be acquired.
And S304, the mobile terminal determines the position parameter and the area parameter of the area to be acquired.
S305, the mobile terminal determines the number and the type of at least one type of biological information according to the position parameter and the area parameter of the area to be acquired.
S306, the mobile terminal collects the first type information and the second type information of the at least one type of biological information according to the number and the type of the at least one type of biological information.
S307, the mobile terminal determines a first matching degree threshold of the first type information and a second matching degree threshold of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be collected.
S308, the mobile terminal matches the first type information and the second type information of the at least one type of biometric information with corresponding biometric templates, respectively.
S309, the mobile terminal performs an unlocking operation when a matching degree between the first type information of the at least one type of biometric information and the corresponding preset biometric template is greater than or equal to the first matching degree threshold, and a matching degree between the second type information and the corresponding preset biometric template is greater than or equal to the second matching degree threshold.
It can be seen that, in the embodiment of the invention, the mobile terminal firstly determines the area to be acquired of the face image; secondly, acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired; and finally, when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively, executing unlocking operation. Therefore, the mobile terminal collects two types of information of at least one type of biological information of the face image after determining the area to be collected, instead of only collecting conventional face information, the situation that the face data collected after the face part is shielded is less and cannot be matched successfully is avoided, the unlocking matching success rate of the mobile terminal is favorably improved, and when the determined area to be collected is smaller, the two types of information are collected instead of simply reducing the matching degree, so that the safety of the mobile terminal is favorably improved.
In addition, the mobile terminal divides the human face into a plurality of preset areas, and determines the area with a large number of characteristic points as the area to be acquired according to the number of the characteristic points of the plurality of preset areas, so that the mobile terminal only needs to extract information of the area to be acquired, and the problem that when part of the area is shielded and the characteristic points cannot be extracted is avoided, the time consumption of the mobile terminal for extracting the information of the whole face is favorable for improving the convenience and the speed of collecting the characteristic points of the mobile terminal, and in addition, determining the number and type of the at least one biological information according to the position parameter and the area parameter of the region to be acquired, and simultaneously, and determining each matching degree threshold according to the number of preset feature points of the area to be acquired, and executing unlocking operation through each matching degree threshold, so that the matching fineness, accuracy and flexibility of the mobile terminal are improved while the safety of the mobile terminal is ensured.
In accordance with the embodiments shown in fig. 2A and fig. 3, please refer to fig. 4, fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention, and as shown in the drawing, the mobile terminal includes a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for performing the following steps;
determining a region to be acquired of the face image;
acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired;
and executing unlocking operation when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively.
It can be seen that, in the embodiment of the invention, the mobile terminal firstly determines the area to be acquired of the face image; secondly, acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired; and finally, when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively, executing unlocking operation. Therefore, the mobile terminal collects two types of information of at least one type of biological information of the face image after determining the area to be collected, instead of only collecting conventional face information, the situation that the face data collected after the face part is shielded is less and cannot be matched successfully is avoided, the unlocking matching success rate of the mobile terminal is favorably improved, and when the determined area to be collected is smaller, the two types of information are collected instead of simply reducing the matching degree, so that the safety of the mobile terminal is favorably improved.
In a possible example, in the aspect of determining the region to be acquired of the face image, the instructions in the program are specifically configured to perform the following steps: detecting preset feature points contained in the face image in the preview image; determining the number of the preset feature points of each area in a preset area; and determining the preset area with the number of the preset characteristic points larger than a preset threshold value as the area to be acquired.
In one possible example, the program further includes instructions for performing the steps of: before the region to be acquired of the face image is determined, acquiring all feature points of the face image, wherein the all feature points comprise first type feature points corresponding to the first type information and second type feature points corresponding to the second type information; and storing all the characteristic points as the preset characteristic points; dividing the face image into a plurality of areas according to all the characteristic points; and storing the plurality of regions as the preset regions; generating a biological template of each region according to the characteristic points of each region in the plurality of regions; and storing the biological templates of the regions as the preset biological templates of the regions.
In one possible example, in the above-mentioned aspect of acquiring the first type information and the second type information of the at least one type of biological information of the face image corresponding to the region to be acquired, the instructions in the program are specifically configured to perform the following steps: determining the position parameter and the area parameter of the area to be acquired; determining the number and the type of the at least one type of biological information according to the position parameter and the area parameter of the region to be acquired; and collecting the first type information and the second type information of the at least one type of biological information according to the number and the type of the at least one type of biological information.
In a possible example, in the aspect that the matching of the first type information and the second type information of the at least one type of biological information with the corresponding biological template is successful, the unlocking operation is performed, and the instructions in the program are specifically configured to perform the following steps: determining a first matching degree threshold value of the first type information and a second matching degree threshold value of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be acquired; and matching the first type information and the second type information of the at least one type of biological information with the corresponding biological templates, respectively; and executing an unlocking operation when the matching degree of the first type information of the at least one type of biological information and the corresponding preset biological template is greater than or equal to the first matching degree threshold value, and the matching degree of the second type information and the corresponding preset biological template is greater than or equal to the second matching degree threshold value.
The above description has introduced the solution of the embodiment of the present invention mainly from the perspective of the method-side implementation process. It is understood that the mobile terminal includes hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiment of the present invention may perform the division of the functional units for the mobile terminal according to the method example described above, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
In case of an integrated unit, fig. 5 shows a block diagram of one possible functional unit composition of the mobile terminal involved in the above embodiment. The mobile terminal 500 includes: a processing unit 502 and an acquisition unit 503. Processing unit 502 is configured to control and manage the actions of the mobile terminal, e.g., processing unit 502 is configured to support the mobile terminal to perform steps S201-S203 in fig. 2A, steps S301-S309 in fig. 3, and/or other processes for the techniques described herein. The acquisition unit 503 is used to support communication between the mobile terminal and other devices. The mobile terminal may further include a storage unit 501 for storing program codes and data of the mobile terminal.
The processing unit 502 is configured to determine a region to be acquired of a face image; and a first type information and a second type information for acquiring at least one type of biological information of the face image corresponding to the region to be acquired by the acquisition unit 503; and executing unlocking operation when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological templates respectively.
In a possible example, in the aspect of determining the region to be acquired of the facial image, the processing unit 502 is specifically configured to: detecting preset feature points contained in the face image in the preview image; and the number of the preset feature points of each area in a preset area is determined; and the preset area used for determining the number of the preset characteristic points larger than a preset threshold value is the area to be acquired.
In a possible example, before the processing unit 502 determines the region to be acquired of the face image, it is further configured to: acquiring all feature points of the face image, wherein the all feature points comprise first type feature points corresponding to the first type information and second type feature points corresponding to the second type information; and storing all the feature points as the preset feature points; and the face image is divided into a plurality of areas according to all the characteristic points; and storing the plurality of regions as the preset regions; and a biological template for generating each of the plurality of regions based on the feature points of each of the plurality of regions; and storing the biological templates of the regions as the preset biological templates of the regions.
In one possible example, in the above-mentioned first type information and second type information of at least one type of biological information of the face image corresponding to the region to be acquired is acquired by the acquisition unit 503, the processing unit 502 is specifically configured to: determining the position parameter and the area parameter of the area to be acquired; and determining the number and type of the at least one type of biological information according to the position parameter and the area parameter of the region to be acquired; and the first type information and the second type information for acquiring the at least one type of biological information by the acquisition unit 503 according to the number and the type of the at least one type of biological information.
In a possible example, in terms of performing an unlocking operation when the first type information and the second type information of the at least one type of biometric information are successfully matched with the corresponding biometric templates, the processing unit is specifically configured to: determining a first matching degree threshold value of the first type information and a second matching degree threshold value of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be acquired; and a matching unit for matching the first type information and the second type information of the at least one type of biological information with the corresponding biological templates, respectively; and the unlocking unit is used for executing unlocking operation when the matching degree of the first type information of the at least one type of biological information and the corresponding preset biological template is greater than or equal to the first matching degree threshold value, and the matching degree of the second type information and the corresponding preset biological template is greater than or equal to the second matching degree threshold value.
The processing unit 502 may be a processor or a controller, the acquisition unit 503 may be an iris image acquisition device or a face image acquisition device, and the storage unit 501 may be a memory.
An embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the methods described in the above method embodiments, and the computer includes a mobile terminal.
Embodiments of the present invention also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising a mobile terminal.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above methods according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (11)
1. A mobile terminal comprising a processor, and a biometric image capture device and a memory coupled to the processor, wherein,
the biological image acquisition device is used for acquiring at least one biological image of an area to be acquired;
the memory is used for storing a preset biological template;
the processor is used for determining a region to be acquired of the face image and acquiring first type information and second type information of at least one type of biological information of the at least one type of biological image, and comprises: determining the position parameter and the area parameter of the area to be acquired; determining the number and the type of the at least one type of biological information according to the position parameter and the area parameter of the area to be acquired; collecting the first type information and the second type information of the at least one biological information according to the number and the type of the at least one biological information; and when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively, executing an unlocking operation, specifically: determining a first matching degree threshold value of the first type information and a second matching degree threshold value of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be acquired;
matching the first type information and the second type information of the at least one type of biological information with the corresponding preset biological template respectively;
when the matching degree of the first type information of the at least one type of biological information and the corresponding preset biological template is greater than or equal to the first matching degree threshold value, and the matching degree of the second type information and the corresponding preset biological template is greater than or equal to the second matching degree threshold value, performing unlocking operation;
wherein the at least one biological information is iris information, and the first type information is conventional characteristic point information including a crown, a crystalline lens, a filament, and a spot of the iris; the second type of information is personalized feature points including pits and recesses of the iris.
2. The mobile terminal according to claim 1, wherein in the determining the region of the face image to be captured, the processor is specifically configured to: detecting preset feature points contained in the face image in the preview image; and determining the number of the preset feature points of each area in a preset area; and determining the preset area with the number of the preset characteristic points larger than a preset threshold as the area to be acquired.
3. The mobile terminal according to claim 1 or 2, wherein the processor is further configured to, before determining the region of the face image to be captured: acquiring all feature points of the face image; the face image is divided into a plurality of areas according to all the characteristic points; and generating a biological template of each of the plurality of regions according to the feature points of each of the plurality of regions;
the memory is used for storing all the characteristic points as the preset characteristic points; and storing the plurality of regions as the preset regions; and storing the biological templates of the regions as the preset biological templates of the regions.
4. An unlock control method, characterized in that the method comprises:
determining a region to be acquired of the face image;
acquiring first type information and second type information of at least one type of biological information of the face image corresponding to the area to be acquired, wherein the first type information and the second type information comprise: determining the position parameter and the area parameter of the area to be acquired; determining the number and the type of the at least one type of biological information according to the position parameter and the area parameter of the area to be acquired; collecting the first type information and the second type information of the at least one biological information according to the number and the type of the at least one biological information;
and when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological template respectively, executing an unlocking operation, specifically: determining a first matching degree threshold value of the first type information and a second matching degree threshold value of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be acquired;
matching the first type information and the second type information of the at least one type of biological information with the corresponding preset biological template respectively;
when the matching degree of the first type information of the at least one type of biological information and the corresponding preset biological template is greater than or equal to the first matching degree threshold value, and the matching degree of the second type information and the corresponding preset biological template is greater than or equal to the second matching degree threshold value, performing unlocking operation;
wherein the at least one biological information is iris information, and the first type information is conventional characteristic point information including a crown, a crystalline lens, a filament, and a spot of the iris; the second type of information is personalized feature points including pits and recesses of the iris.
5. The method of claim 4, wherein the determining the region of the face image to be acquired comprises:
detecting preset feature points contained in the face image in the preview image;
determining the number of the preset feature points of each area in a preset area;
and determining the preset area with the number of the preset characteristic points larger than a preset threshold value as the area to be acquired.
6. The method according to claim 4 or 5, wherein before determining the region of the face image to be acquired, the method further comprises:
acquiring all feature points of the face image;
storing all the feature points as the preset feature points;
dividing the face image into a plurality of areas according to all the feature points;
storing the plurality of areas as the preset areas;
generating a biological template of each region according to the feature points of each region in the plurality of regions;
and storing the biological templates of the regions as the preset biological templates of the regions.
7. A mobile terminal is characterized by comprising a processing unit and an acquisition unit,
the processing unit is used for determining a region to be acquired of the face image; and a first type information and a second type information which are used for acquiring at least one type of biological information of the face image corresponding to the area to be acquired through the acquisition unit, wherein the processing unit is specifically used for: determining the position parameter and the area parameter of the area to be acquired; determining the number and the type of the at least one type of biological information according to the position parameter and the area parameter of the area to be acquired; acquiring the first type information and the second type information of the at least one biological information through the acquisition unit according to the number and the type of the at least one biological information; and when the first type information and the second type information of the at least one type of biological information are successfully matched with the corresponding preset biological templates, the processing unit is specifically configured to: determining a first matching degree threshold value of the first type information and a second matching degree threshold value of the second type information of the at least one type of biological information according to the number of preset feature points of the area to be acquired;
matching the first type information and the second type information of the at least one type of biological information with the corresponding preset biological template respectively;
when the matching degree of the first type information of the at least one type of biological information and the corresponding preset biological template is greater than or equal to the first matching degree threshold value, and the matching degree of the second type information and the corresponding preset biological template is greater than or equal to the second matching degree threshold value, performing unlocking operation;
wherein the at least one biological information is iris information, and the first type information is conventional characteristic point information including a crown, a crystalline lens, a filament, and a spot of the iris; the second type of information is personalized feature points including pits and recesses of the iris.
8. The mobile terminal according to claim 7, wherein in the determining the region to be acquired of the face image, the processing unit is specifically configured to: detecting preset feature points contained in the face image in the preview image; the number of the preset feature points of each area in a preset area is determined; and the preset area used for determining that the number of the preset characteristic points is larger than a preset threshold value is the area to be acquired.
9. The mobile terminal according to claim 7 or 8, wherein before the processing unit determines the region to be acquired of the face image, the processing unit is further configured to: acquiring all feature points of the face image; and storing all the feature points as the preset feature points; the face image is divided into a plurality of areas according to all the characteristic points; and storing the plurality of regions as the preset regions; and a biological template for generating each of the plurality of regions from the feature points of each of the plurality of regions; and the preset biological templates of the regions are used for storing the biological templates of the regions.
10. A mobile terminal comprising a processor, memory, a communications interface, and one or more programs stored in the memory and configured for execution by the processor, the programs including instructions for performing the steps in the method of any of claims 4-6.
11. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any of claims 4-6, the computer comprising a mobile terminal.
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| CN108733999A (en) * | 2018-04-24 | 2018-11-02 | 浙江大华技术股份有限公司 | A kind of unlocking method and device, terminal device and readable storage medium storing program for executing |
| CN110472459B (en) * | 2018-05-11 | 2022-12-27 | 华为技术有限公司 | Method and device for extracting feature points |
| CN108958613A (en) * | 2018-07-03 | 2018-12-07 | 佛山市影腾科技有限公司 | A kind of terminal unlock method based on recognition of face, device and terminal |
| CN108986019A (en) * | 2018-07-13 | 2018-12-11 | 北京小米智能科技有限公司 | Method for regulating skin color and device, electronic equipment, machine readable storage medium |
| CN109409071A (en) * | 2018-11-13 | 2019-03-01 | 湖北文理学院 | Unlocking method, device and the electronic equipment of electronic equipment |
| CN110263695B (en) * | 2019-06-14 | 2021-07-16 | 北京达佳互联信息技术有限公司 | Face position acquisition method and device, electronic equipment and storage medium |
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