CN107563304A - Unlocking terminal equipment method and device, terminal device - Google Patents
Unlocking terminal equipment method and device, terminal device Download PDFInfo
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- CN107563304A CN107563304A CN201710677498.9A CN201710677498A CN107563304A CN 107563304 A CN107563304 A CN 107563304A CN 201710677498 A CN201710677498 A CN 201710677498A CN 107563304 A CN107563304 A CN 107563304A
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Abstract
The present invention proposes a kind of unlocking terminal equipment method and device, terminal device, and wherein method includes：Projected by using structure light device to user, obtain the face 3D models of user；The face 3D models of user are analyzed, extract the characteristic point information in face 3D models；Characteristic point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the similarity between the face 3D models of user and standard faces 3D models；Determine whether to be unlocked terminal device according to similarity, recognition of face and unlocking terminal equipment are carried out so as to the three-dimensional feature point information of the face 3D models based on user, so as to improve the degree of accuracy of recognition of face and unlocking terminal equipment, and the face 3D models of user are difficult to replicate, so as to avoid the possibility that terminal device sensitive information is stolen, the security of terminal device is improved.
Description
Technical field
The present invention relates to field of terminal equipment, more particularly to a kind of unlocking terminal equipment method and device, terminal device.
Background technology
With the development of mobile communication technology, mobile terminal has become indispensable communication in people's daily life and set
Standby, its confidentiality and security are more taken seriously.Face recognition technology because it possesses the advantages of easy to operate and safe,
Gradually it is applied in mobile terminal system, such as system unblock, secure payment and application login etc..
By taking the system unblock that face recognition technology is applied to mobile terminal as an example.The current unblock based on recognition of face
Mainly it is unlocked by two-dimension human face identification.The recognition speed identified by two-dimension human face is fast but undesirable in external environment condition
When the problem of recognition accuracy is low be present, and exist and be easily replicated, cause mobile terminal sensitive information to be stolen, mobile terminal
The problem of security difference.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.
Therefore, first purpose of the present invention is to propose a kind of unlocking terminal equipment method, to realize that terminal device is pacified
Unlock entirely, and solve the problem of existing unlocking terminal equipment method security is poor, and the degree of accuracy is low.
Second object of the present invention is to propose a kind of unlocking terminal equipment device.
Third object of the present invention is to propose a kind of terminal device.
Fourth object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
For the above-mentioned purpose, first aspect present invention embodiment proposes a kind of unlocking terminal equipment method, including：
Projected using structure light device to user, obtain the face 3D models of user；
The face 3D models of the user are analyzed, extract the characteristic point information in the face 3D models；
The characteristic point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the use
Similarity between the face 3D models and standard faces 3D models at family；
Determine whether to be unlocked terminal device according to the similarity.
It is described to use structure light device to user as a kind of possible implementation of first aspect present invention embodiment
Projected, obtain the face 3D models of user, including：
Structured light projection is carried out to user using structure light device；
The structured light projection of the user is imaged using video camera, obtains the face depth image of the user；
Closed with reference to the position between the face depth image of the user, and the structure light device and the video camera
System, calculate the face 3D models for obtaining the user.
As a kind of possible implementation of first aspect present invention embodiment, structure caused by the structure light device
Light is heterogeneous texture light.
It is described by the characteristic point information and pre- as a kind of possible implementation of first aspect present invention embodiment
The characteristic point information for the standard faces 3D models deposited is compared, and obtains the face 3D models and standard faces 3D moulds of the user
Similarity between type, including：
The characteristic point information of the face 3D models of the user is analyzed, in the face 3D models for obtaining the user
Positional information between the parameter information of each organ and each organ；
The characteristic point information of the standard faces 3D models is analyzed, obtains each device in the standard faces 3D models
Positional information between the parameter information of official and each organ；
By the positional information in the face 3D models of the user between the parameter information of each organ and each organ, with institute
State the positional information in standard faces 3D models between the parameter information of each organ and each organ to be compared, obtain the use
Similarity between the face 3D models and standard faces 3D models at family.
It is described to use structure light device to user as a kind of possible implementation of first aspect present invention embodiment
Projected, before the face 3D models for obtaining user, in addition to：
Projected using structure light device to terminal user, obtain the standard faces 3D moulds of terminal user
Type；
The standard faces 3D models are analyzed, extract the characteristic point information in the standard faces 3D models；
Store the characteristic point information in the standard faces 3D models.
It is described to be according to similarity determination as a kind of possible implementation of first aspect present invention embodiment
It is no that terminal device is unlocked, including：
If the similarity is more than or equal to predetermined threshold value, the terminal device is unlocked；
If the similarity is less than predetermined threshold value, the terminal device is not unlocked.
The unlocking terminal equipment method of the embodiment of the present invention, projected, obtained to user by using structure light device
The face 3D models of user；The face 3D models of user are analyzed, extract the characteristic point information in face 3D models；By spy
Sign point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the face 3D models and standard of user
Similarity between face 3D models；Determine whether to be unlocked terminal device according to similarity, so as to based on user
The three-dimensional feature point information of face 3D models carry out recognition of face and unlocking terminal equipment, so as to improve recognition of face with
And the degree of accuracy of unlocking terminal equipment, and the face 3D models of user are difficult to replicate, so as to avoid terminal device sensitive information
The possibility being stolen, improve the security of terminal device.
For the above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of unlocking terminal equipment device, including：
First projection module, for being projected using structure light device to user, obtain the face 3D models of user；
First extraction module, for analyzing the face 3D models of the user, extract in the face 3D models
Characteristic point information；
Comparing module, for analyzing the face 3D models of the user, extract the spy in the face 3D models
Sign point information；
Unlocked state, for determining whether to be unlocked terminal device according to the similarity.
As a kind of possible implementation of second aspect of the present invention embodiment, first projection module includes：
Projecting cell, for determining whether to be unlocked terminal device according to the similarity.
Image unit, for being imaged using video camera to the structured light projection of the user, obtain the user's
Face depth image；
Computing unit, for the face depth image with reference to the user, and the structure light device and the shooting
Position relationship between machine, calculate the face 3D models for obtaining the user.
As a kind of possible implementation of second aspect of the present invention embodiment, structure caused by the structure light device
Light is heterogeneous texture light.
As a kind of possible implementation of second aspect of the present invention embodiment, the comparing module includes：
First analysis module, the characteristic point information for the face 3D models to the user is analyzed, described in acquisition
Positional information in the face 3D models of user between the parameter information of each organ and each organ；
Second analysis module, for analyzing the characteristic point information of the standard faces 3D models, obtain the mark
Positional information in quasi- face 3D models between the parameter information of each organ and each organ；
Comparing unit, between the parameter information of each organ in the face 3D models by the user and each organ
Positional information in positional information, with the standard faces 3D models between the parameter information of each organ and each organ is compared
It is right, obtain the similarity between the face 3D models of the user and standard faces 3D models.
As a kind of possible implementation of second aspect of the present invention embodiment, described device also includes：
Second projection module, for being projected using structure light device to terminal user, obtain terminal device and use
The standard faces 3D models at family；
Second extraction module, for analyzing the standard faces 3D models, extract the standard faces 3D models
In characteristic point information；
Memory module, for storing the characteristic point information in the standard faces 3D models.
As a kind of possible implementation of second aspect of the present invention embodiment, the unlocked state is specifically used for,
When the similarity is more than or equal to predetermined threshold value, the terminal device is unlocked；
When the similarity is less than predetermined threshold value, the terminal device is not unlocked.
The unlocking terminal equipment device of the embodiment of the present invention, projected, obtained to user by using structure light device
The face 3D models of user；The face 3D models of user are analyzed, extract the characteristic point information in face 3D models；By spy
Sign point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the face 3D models and standard of user
Similarity between face 3D models；Determine whether to be unlocked terminal device according to similarity, so as to based on user
The three-dimensional feature point information of face 3D models carry out recognition of face and unlocking terminal equipment, so as to improve recognition of face with
And the degree of accuracy of unlocking terminal equipment, and the face 3D models of user are difficult to replicate, so as to avoid terminal device sensitive information
The possibility being stolen, improve the security of terminal device.
For the above-mentioned purpose, third aspect present invention embodiment proposes a kind of terminal device, including：
Housing and processor and memory in the housing, wherein, the processor is by reading the storage
The executable program code stored in device runs program corresponding with the executable program code, for realizing such as this hair
Unlocking terminal equipment method described in bright first aspect embodiment.
For the above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter, computer program is stored thereon with, is realized when computer program is executed by processor as described in first aspect embodiment
Unlocking terminal equipment method.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is a kind of schematic flow sheet of unlocking terminal equipment method provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of various forms of structured light projections provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet of another unlocking terminal equipment method provided in an embodiment of the present invention；
Fig. 4 is the schematic flow sheet of another unlocking terminal equipment method provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of unlocking terminal equipment device provided in an embodiment of the present invention；
Fig. 6 is the structural representation of another unlocking terminal equipment device provided in an embodiment of the present invention；
Fig. 7 is the structural representation of another unlocking terminal equipment device provided in an embodiment of the present invention；
Fig. 8 is the structural representation of another unlocking terminal equipment device provided in an embodiment of the present invention；
Fig. 9 is a kind of structural representation of terminal device provided in an embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings unlocking terminal equipment method and device, the terminal device of the embodiment of the present invention are described.
Safely terminal device can be unlocked, and the existing unlocking terminal equipment method security of solution is poor,
The problem of degree of accuracy is low.
Fig. 1 is the schematic flow sheet of unlocking terminal equipment method provided in an embodiment of the present invention.
As shown in figure 1, the unlocking terminal equipment method comprises the following steps：
S101, projected to user using structure light device, obtain the face 3D models of user.
The executive agent for the unlocking terminal equipment method that the present embodiment provides is unlocking terminal equipment device, terminal device solution
Locking device is specifically as follows the hardware or software of installation on the terminal device.The terminal device can be smart mobile phone, flat board
Computer, ipad etc..
In the present embodiment, structure light refers to the set of the projection ray in known spatial direction.Structure light device refers to
Generating structure light, can be by the equipment on structured light projection to measurand.The pattern of structure light can include：Structure light mould
Formula, line-structured light pattern, multiple line structure optical mode, area-structure light pattern and phase method pattern.Structure light pattern refers to tying
The light beam that structure light device is sent projects one luminous point of generation in measurand；Lens imaging of the luminous point through video camera is in video camera
Imaging plane on, formed a two-dimensional points.It is tested that line-structured light pattern refers to that the light beam that structure light device is sent projects
A light is produced on object；For lens imaging of the light through video camera on the imaging plane of video camera, forming one may hair
The light of raw distortion or fracture.Multiple line structure optical mode refers to that the light beam that structure light device is sent is projected in measurand
Produce a plurality of light.Area-structure light pattern refers to that the light beam that structure light device is sent projects and smooth surface is produced in measurand.
Wherein, the depth at each position is proportional in the distortion degree of light and measurand.Splitting in the breaking degree and measurand of light
The correlations such as seam.
With reference to video camera imaging plane on luminous point, light or smooth surface, and the position of video camera and structure light device
Relation is put, triangle geometrical-restriction relation can be obtained, and luminous point, light or smooth surface can be uniquely determined in the known world by it
Locus in coordinate system, that is, determine the sky of each position, each characteristic point in the known world coordinate system in measurand
Between position；And then the colouring information of camera acquisition is combined, the recovery to the three dimensions of measurand can be completed.Such as Fig. 2
Various forms of structured light projections that are shown, being formed for different structure light devices in measurand.
In addition, it is also necessary to illustrate, in the present embodiment, the pattern of structure light can also include：Pattern light
Pattern, pattern optical mode refer to that the light beam that structure light device is sent projects and non-homogeneous luminous point battle array are produced in measurand
Row.
In the present embodiment, specifically, unlocking terminal equipment device can call structure light device to carry out structure light to user
Projection；The structured light projection of user is imaged using video camera, obtains the face depth image of user；With reference to the people of user
Position relationship between face depth image, and structure light device and video camera, calculate the face 3D models for obtaining user.
In the present embodiment, unlocking terminal equipment device can obtain the position of user in advance, according to the position adjustment of user
The projection angle of structure light device and drop shadow spread, drop shadow spread is included into the position where user；Or terminal device
Drop shadow spread can be previously provided to user by tripper, so that user is moved in drop shadow spread.
In the present embodiment, unlocking terminal equipment device can call structure light device to carry out structured light projection to user, with
And call video camera to shoot the structured light projection in drop shadow spread, to obtain the face depth image of user, and then obtain
Take the face 3D models at family.
Wherein, the mode that unlocking terminal equipment device obtains the position of user can be that unlocking terminal equipment device calls
Structure light device simultaneously adjusts its projection angle and drop shadow spread, to obtain the depth image of all objects of surrounding, to all
The depth image of object is analyzed, and obtains the characteristic point information in the depth image of all objects, and distinguished point based information is known
The depth image of others' body, and then determine the position of human body and the position of face.
S102, the face 3D models to user are analyzed, and extract the characteristic point information in face 3D models.
In the present embodiment, unlocking terminal equipment device can extract the characteristic point information in the subregion of face, such as
Spy in the regions such as eyes region, eyebrow region, nose region, ear region, face region
Sign point information, goes to be compared, so as to reduce the quantity for the characteristic point for needing to compare, reduces computing based on these characteristic point informations
Amount, recognition of face speed is improved, improve unlocking terminal equipment speed and efficiency.
S103, characteristic point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains user
Face 3D models and standard faces 3D models between similarity.
In the present embodiment, in a kind of embodiment, unlocking terminal equipment device can be by institute in the face 3D models of user
The characteristic point information for having region is compared with the characteristic point information of all areas in the standard faces 3D models to prestore, obtains and uses
Similarity between the face 3D models and standard faces 3D models at family.In another embodiment, unlocking terminal equipment device
Can be by subregion in subregional characteristic point information in the middle part of the face 3D models of user and the standard faces 3D models to prestore
Characteristic point information be compared, obtain the similarity between the face 3D models of user and standard faces 3D models.Part area
Domain is such as eyes region, eyebrow region, nose region, ear region, face region.
S104, according to similarity determine whether to be unlocked terminal device.
In the present embodiment, specifically, unlocking terminal equipment device can be in the face 3D models and standard faces 3D of user
When similarity between model is more than or equal to predetermined threshold value, terminal device is unlocked；In the face 3D models and mark of user
When similarity between quasi- face 3D models is less than predetermined threshold value, terminal device is not unlocked.
The unlocking terminal equipment method of the embodiment of the present invention, projected, obtained to user by using structure light device
The face 3D models of user；The face 3D models of user are analyzed, extract the characteristic point information in face 3D models；By spy
Sign point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the face 3D models and standard of user
Similarity between face 3D models；Determine whether to be unlocked terminal device according to similarity, so as to based on user
The three-dimensional feature point information of face 3D models carry out recognition of face and unlocking terminal equipment, so as to improve recognition of face with
And the degree of accuracy of unlocking terminal equipment, and the face 3D models of user are difficult to replicate, so as to avoid terminal device sensitive information
The possibility being stolen, improve the security of terminal device.
Fig. 3 is the schematic flow sheet of another unlocking terminal equipment method provided in an embodiment of the present invention.As shown in figure 3,
On the basis of embodiment illustrated in fig. 1, step 103 can specifically include：
S1031, the characteristic point information to the face 3D models of user are analyzed, and are obtained each in the face 3D models of user
Positional information between the parameter information of organ and each organ.
In the present embodiment, unlocking terminal equipment device can divide the characteristic point information of the face 3D models of user
Analysis, determines each organ in the face 3D models of user, such as shape, the size of the organ such as eyes, eyebrow, nose, ear, face
Deng parameter information, and the information such as the distance between each organ, orientation, the face 3D models of user are determined according to above- mentioned information
Feature.
S1032, the characteristic point information to standard faces 3D models are analyzed, and obtain each organ in standard faces 3D models
Parameter information and each organ between positional information.
S1033, by the positional information in the face 3D models of user between the parameter information of each organ and each organ, with
Positional information in standard faces 3D models between the parameter information of each organ and each organ is compared, and obtains the people of user
Similarity between face 3D models and standard faces 3D models.
For example, unlocking terminal equipment device can determine double interocular distances and standard faces 3D in the face 3D models of user
The difference of double interocular distances in model；Determine face size and face chi in standard faces 3D models in the face 3D models of user
Very little difference etc., determined according to above-mentioned each mathematic interpolation similar between the face 3D models of user and standard faces 3D models
Degree.
The unlocking terminal equipment method of the embodiment of the present invention, projected, obtained to user by using structure light device
The face 3D models of user；The face 3D models of user are analyzed, extract the characteristic point information in face 3D models；To with
The characteristic point information of the face 3D models at family is analyzed, obtain in the face 3D models of user the parameter information of each organ and
Positional information between each organ；The characteristic point information of standard faces 3D models is analyzed, obtains standard faces 3D models
In each organ parameter information and each organ between positional information；The parameter of each organ in the face 3D models of user is believed
Positional information between breath and each organ, and in standard faces 3D models between the parameter information of each organ and each organ
Positional information is compared, and obtains the similarity between the face 3D models of user and standard faces 3D models；According to similarity
Determine whether to be unlocked terminal device, enter pedestrian so as to the three-dimensional feature point information of the face 3D models based on user
Face identifies and unlocking terminal equipment, so as to improve the degree of accuracy of recognition of face and unlocking terminal equipment, and the people of user
Face 3D models are difficult to replicate, and so as to avoid the possibility that terminal device sensitive information is stolen, improve the peace of terminal device
Quan Xing.
Fig. 4 is the schematic flow sheet of another unlocking terminal equipment method provided in an embodiment of the present invention.As shown in figure 4,
On the basis of embodiment illustrated in fig. 1, described method can also include：
S105, projected to terminal user using structure light device, obtain the standard faces of terminal user
3D models.
The process that unlocking terminal equipment device performs step 105 is similar with step 101 in embodiment illustrated in fig. 1, Ke Yican
Examine the acquisition process of the face 3D models of user in step 101.
S106, standard faces 3D models are analyzed, the characteristic point information in extraction standard face 3D models.
Characteristic point information in S107, storage standard faces 3D models.
In the present embodiment, in the case of unlocking terminal equipment, terminal device can arrange according to terminal user
Good mode, such as the modes such as specific character string, specific password are inputted, by the user in terminal device drop shadow spread
Terminal user is identified as, so as to be projected to terminal user, obtains the standard faces 3D moulds of terminal user
Type, and then the characteristic point information of standard faces 3D models and storage are obtained, to be subsequently compared, improve terminal device solution
The security of lock and the degree of accuracy.
The unlocking terminal equipment method of the embodiment of the present invention, by first using structure light device to be carried out to terminal user
Projection, obtain the standard faces 3D models of terminal user；And then the characteristic point information obtained in standard faces 3D models enters
Row storage；Then projected using structure light device to user, obtain the face 3D models of user；To the face 3D moulds of user
Type is analyzed, and extracts the characteristic point information in face 3D models；By characteristic point information and the standard faces 3D models that prestore
Characteristic point information is compared, and obtains the similarity between the face 3D models of user and standard faces 3D models；According to similar
Degree determines whether to be unlocked terminal device, is carried out so as to the three-dimensional feature point information of the face 3D models based on user
Recognition of face and unlocking terminal equipment, so as to improve the degree of accuracy of recognition of face and unlocking terminal equipment, and user
Face 3D models are difficult to replicate, and so as to avoid the possibility that terminal device sensitive information is stolen, improve terminal device
Security.
Fig. 5 is a kind of structural representation of unlocking terminal equipment device provided in an embodiment of the present invention.As shown in figure 5, should
Unlocking terminal equipment device includes：
First projection module 51, the first extraction module 52, comparing module 53 and unlocked state 54.
Wherein, the first projection module 51, for being projected using structure light device to user, the face 3D of user is obtained
Model；
First extraction module 52, for analyzing the face 3D models of the user, extract the face 3D models
In characteristic point information；
Comparing module 53, for analyzing the face 3D models of the user, extract in the face 3D models
Characteristic point information；
Unlocked state 54, for determining whether to be unlocked terminal device according to the similarity.
The unlocking terminal equipment device that the present embodiment provides is specifically as follows the hardware or soft of installation on the terminal device
Part.The terminal device can be smart mobile phone, tablet personal computer, ipad etc..
In the present embodiment, unlocking terminal equipment device can extract the characteristic point information in the subregion of face, such as
Spy in the regions such as eyes region, eyebrow region, nose region, ear region, face region
Sign point information, goes to be compared, so as to reduce the quantity for the characteristic point for needing to compare, reduces computing based on these characteristic point informations
Amount, recognition of face speed is improved, improve unlocking terminal equipment speed and efficiency.
In the present embodiment, in a kind of embodiment, unlocking terminal equipment device can be by institute in the face 3D models of user
The characteristic point information for having region is compared with the characteristic point information of all areas in the standard faces 3D models to prestore, obtains and uses
Similarity between the face 3D models and standard faces 3D models at family.In another embodiment, unlocking terminal equipment device
Can be by subregion in subregional characteristic point information in the middle part of the face 3D models of user and the standard faces 3D models to prestore
Characteristic point information be compared, obtain the similarity between the face 3D models of user and standard faces 3D models.Part area
Domain is such as eyes region, eyebrow region, nose region, ear region, face region.
In the present embodiment, specifically, unlocking terminal equipment device can be in the face 3D models and standard faces 3D of user
When similarity between model is more than or equal to predetermined threshold value, terminal device is unlocked；In the face 3D models and mark of user
When similarity between quasi- face 3D models is less than predetermined threshold value, terminal device is not unlocked.
On Fig. 5 basis, Fig. 6 is the structural representation of another unlocking terminal equipment device provided in an embodiment of the present invention
Figure.As shown in fig. 6, first projection module 51 includes：Projecting cell 511, image unit 512 and computing unit 513.
Wherein, projecting cell 511, for determining whether to be unlocked terminal device according to the similarity.
Image unit 512, for being imaged using video camera to the structured light projection of the user, obtain the user
Face depth image；
Computing unit 513, for the face depth image with reference to the user, and the structure light device and described take the photograph
Position relationship between camera, calculate the face 3D models for obtaining the user.
In the present embodiment, unlocking terminal equipment device can obtain the position of user in advance, according to the position adjustment of user
The projection angle of structure light device and drop shadow spread, drop shadow spread is included into the position where user；Or terminal device
Drop shadow spread can be previously provided to user by tripper, so that user is moved in drop shadow spread.
In the present embodiment, unlocking terminal equipment device can call structure light device to carry out structured light projection to user, with
And call video camera to shoot the structured light projection in drop shadow spread, to obtain the face depth image of user, and then obtain
Take the face 3D models at family.
Wherein, the mode that unlocking terminal equipment device obtains the position of user can be that unlocking terminal equipment device calls
Structure light device simultaneously adjusts its projection angle and drop shadow spread, to obtain the depth image of all objects of surrounding, to all
The depth image of object is analyzed, and obtains the characteristic point information in the depth image of all objects, and distinguished point based information is known
The depth image of others' body, and then determine the position of human body and the position of face.
The unlocking terminal equipment device of the embodiment of the present invention, projected, obtained to user by using structure light device
The face 3D models of user；The face 3D models of user are analyzed, extract the characteristic point information in face 3D models；By spy
Sign point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the face 3D models and standard of user
Similarity between face 3D models；Determine whether to be unlocked terminal device according to similarity, so as to based on user
The three-dimensional feature point information of face 3D models carry out recognition of face and unlocking terminal equipment, so as to improve recognition of face with
And the degree of accuracy of unlocking terminal equipment, and the face 3D models of user are difficult to replicate, so as to avoid terminal device sensitive information
The possibility being stolen, improve the security of terminal device.
On Fig. 5 basis, Fig. 7 is the structural representation of another unlocking terminal equipment device provided in an embodiment of the present invention
Figure.As shown in fig. 7, the comparing module 53 includes：First analytic unit 531, the second analytic unit 532 and comparing unit 533.
Wherein, the first analytic unit 531, the characteristic point information for the face 3D models to the user are analyzed,
Obtain the positional information between the parameter information of each organ and each organ in the face 3D models of the user；
Second analytic unit 532, for analyzing the characteristic point information of the standard faces 3D models, described in acquisition
Positional information in standard faces 3D models between the parameter information of each organ and each organ；
Comparing unit 533, for the parameter information of each organ in the face 3D models by the user and each organ it
Between positional information, enter with the positional information in the standard faces 3D models between the parameter information of each organ and each organ
Row compares, and obtains the similarity between the face 3D models of the user and standard faces 3D models.
In the present embodiment, unlocking terminal equipment device can divide the characteristic point information of the face 3D models of user
Analysis, determines each organ in the face 3D models of user, such as shape, the size of the organ such as eyes, eyebrow, nose, ear, face
Deng parameter information, and the information such as the distance between each organ, orientation, the face 3D models of user are determined according to above- mentioned information
Feature.
For example, unlocking terminal equipment device can determine double interocular distances and standard faces 3D in the face 3D models of user
The difference of double interocular distances in model；Determine face size and face chi in standard faces 3D models in the face 3D models of user
Very little difference etc., determined according to above-mentioned each mathematic interpolation similar between the face 3D models of user and standard faces 3D models
Degree.
The unlocking terminal equipment device of the embodiment of the present invention, projected, obtained to user by using structure light device
The face 3D models of user；The face 3D models of user are analyzed, extract the characteristic point information in face 3D models；To with
The characteristic point information of the face 3D models at family is analyzed, obtain in the face 3D models of user the parameter information of each organ and
Positional information between each organ；The characteristic point information of standard faces 3D models is analyzed, obtains standard faces 3D models
In each organ parameter information and each organ between positional information；The parameter of each organ in the face 3D models of user is believed
Positional information between breath and each organ, and in standard faces 3D models between the parameter information of each organ and each organ
Positional information is compared, and obtains the similarity between the face 3D models of user and standard faces 3D models；According to similarity
Determine whether to be unlocked terminal device, enter pedestrian so as to the three-dimensional feature point information of the face 3D models based on user
Face identifies and unlocking terminal equipment, so as to improve the degree of accuracy of recognition of face and unlocking terminal equipment, and the people of user
Face 3D models are difficult to replicate, and so as to avoid the possibility that terminal device sensitive information is stolen, improve the peace of terminal device
Quan Xing.
On Fig. 5 basis, Fig. 8 is the structural representation of another unlocking terminal equipment device provided in an embodiment of the present invention
Figure.As shown in figure 8, described device also includes：Second projection module 55, the second extraction module 56 and memory module 57.
Wherein, the second projection module 55, for being projected using structure light device to terminal user, terminal is obtained
The standard faces 3D models of equipment user；
Second extraction module 56, for analyzing the standard faces 3D models, extract the standard faces 3D moulds
Characteristic point information in type；
Memory module 57, for storing the characteristic point information in the standard faces 3D models.
In the present embodiment, in the case of unlocking terminal equipment, terminal device can arrange according to terminal user
Good mode, such as the modes such as specific character string, specific password are inputted, by the user in terminal device drop shadow spread
Terminal user is identified as, so as to be projected to terminal user, obtains the standard faces 3D moulds of terminal user
Type, and then the characteristic point information of standard faces 3D models and storage are obtained, to be subsequently compared, improve terminal device solution
The security of lock and the degree of accuracy.
The unlocking terminal equipment device of the embodiment of the present invention, by first using structure light device to be carried out to terminal user
Projection, obtain the standard faces 3D models of terminal user；And then the characteristic point information obtained in standard faces 3D models enters
Row storage；Then projected using structure light device to user, obtain the face 3D models of user；To the face 3D moulds of user
Type is analyzed, and extracts the characteristic point information in face 3D models；By characteristic point information and the standard faces 3D models that prestore
Characteristic point information is compared, and obtains the similarity between the face 3D models of user and standard faces 3D models；According to similar
Degree determines whether to be unlocked terminal device, is carried out so as to the three-dimensional feature point information of the face 3D models based on user
Recognition of face and unlocking terminal equipment, so as to improve the degree of accuracy of recognition of face and unlocking terminal equipment, and user
Face 3D models are difficult to replicate, and so as to avoid the possibility that terminal device sensitive information is stolen, improve terminal device
Security.
The embodiment of the present invention also provides a kind of terminal device.Above-mentioned terminal device includes image processing circuit, at image
Managing circuit can utilize hardware and/or component software to realize, it may include define ISP (Image Signal Processing, figure
As signal transacting) the various processing units of pipeline.Fig. 9 is the schematic diagram of image processing circuit in one embodiment.Such as Fig. 9 institutes
Show, for purposes of illustration only, only showing the various aspects of the image processing techniques related to the embodiment of the present invention.
As shown in figure 9, image processing circuit 900 includes imaging device 910, ISP processors 930 and control logic device 940.
Imaging device 910 may include the camera and structured light projector with one or more lens 912, imaging sensor 914
916.Structured light projector 916 is by structured light projection to measured object.Wherein, the structured light patterns can be laser stripe, Gray code,
Sine streak or, speckle pattern of random alignment etc..Imaging sensor 914 catches the structure light that projection is formed to measured object
Image, and structure light image is sent to ISP processors 930, acquisition is demodulated to structure light image by ISP processors 930
The depth information of measured object.Meanwhile imaging sensor 914 can also catch the color information of measured object.It is of course also possible to by two
Individual imaging sensor 914 catches the structure light image and color information of measured object respectively.
Wherein, by taking pattern light as an example, ISP processors 930 are demodulated to structure light image, are specifically included, from this
The speckle image of measured object is gathered in structure light image, by the speckle image of measured object with reference speckle image according to pre-defined algorithm
View data calculating is carried out, each speckle point for obtaining speckle image on measured object dissipates relative to reference to the reference in speckle image
The displacement of spot.The depth value of each speckle point of speckle image is calculated using trigonometry conversion, and according to the depth
Angle value obtains the depth information of measured object.
It is, of course, also possible to obtain the depth image by the method for binocular vision or based on jet lag TOF method
Information etc., is not limited herein, as long as can obtain or belong to this by the method for the depth information that measured object is calculated
The scope that embodiment includes.
After the color information that ISP processors 930 receive the measured object that imaging sensor 914 captures, it can be tested
View data corresponding to the color information of thing is handled.ISP processors 930 are analyzed view data can be used for obtaining
It is determined that and/or imaging device 910 one or more control parameters image statistics.Imaging sensor 914 may include color
Color filter array (such as Bayer filters), imaging sensor 914 can obtain to be caught with each imaging pixel of imaging sensor 914
Luminous intensity and wavelength information, and provide one group of raw image data being handled by ISP processors 930.
ISP processors 930 handle raw image data pixel by pixel in various formats.For example, each image pixel can
Bit depth with 8,10,12 or 14 bits, ISP processors 930 can be carried out at one or more images to raw image data
Reason operation, image statistics of the collection on view data.Wherein, image processing operations can be by identical or different bit depth
Precision is carried out.
ISP processors 930 can also receive pixel data from video memory 920.Video memory 920 can be memory device
The independent private memory in a part, storage device or electronic equipment put, and may include DMA (Direct
MemoryAccess, direct direct memory access (DMA)) feature.
When receiving raw image data, ISP processors 930 can carry out one or more image processing operations.
After ISP processors 930 get color information and the depth information of measured object, it can be merged, obtained
3-D view.Wherein, can be extracted by least one of appearance profile extracting method or contour feature extracting method corresponding
The feature of measured object.Such as pass through active shape model method ASM, active appearance models method AAM, PCA PCA, discrete
The methods of cosine transform method DCT, the feature of measured object is extracted, is not limited herein.It will be extracted respectively from depth information again
The feature of measured object and feature progress registration and the Fusion Features processing that measured object is extracted from color information.Herein refer to
Fusion treatment can be the feature that will be extracted in depth information and color information directly combination or by different images
Middle identical feature combines after carrying out weight setting, it is possibility to have other amalgamation modes, finally according to the feature after fusion, generation
3-D view.
The view data of 3-D view can be transmitted to video memory 920, to carry out other place before shown
Reason.ISP processors 930 from the reception processing data of video memory 920, and to the processing data carry out original domain in and
Image real time transfer in RGB and YCbCr color spaces.The view data of 3-D view may be output to display 960, for
Family is watched and/or further handled by graphics engine or GPU (Graphics Processing Unit, graphics processor).This
Outside, the output of ISP processors 930 also be can be transmitted to video memory 920, and display 960 can be read from video memory 920
View data.In one embodiment, video memory 920 can be configured as realizing one or more frame buffers.In addition,
The output of ISP processors 930 can be transmitted to encoder/decoder 950, so as to encoding/decoding image data.The picture number of coding
According to can be saved, and decompressed before being shown in the equipment of display 960.Encoder/decoder 950 can by CPU or GPU or
Coprocessor is realized.
The image statistics that ISP processors 930 determine, which can be transmitted, gives the unit of control logic device 940.Control logic device 940
It may include the processor and/or microcontroller for performing one or more routines (such as firmware), one or more routines can be according to connecing
The image statistics of receipts, determine the control parameter of imaging device 910.
It it is below the step of realizing unlocking terminal equipment method with image processing techniques in Fig. 9：
Projected using structure light device to user, obtain the face 3D models of user；
The face 3D models of the user are analyzed, extract the characteristic point information in the face 3D models；
The characteristic point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the use
Similarity between the face 3D models and standard faces 3D models at family；
Determine whether to be unlocked terminal device according to the similarity.
In order to realize above-described embodiment, the present invention also proposes a kind of non-transitorycomputer readable storage medium, deposited thereon
Computer program is contained, terminal device as in the foregoing embodiment can be realized when the computer program is executed by processor
Unlocking method.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize custom logic function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware with another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized：With the logic gates for realizing logic function to data-signal from
Logic circuit is dissipated, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although have been shown and retouch above
Embodiments of the invention are stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the present invention
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
Claims (14)
- A kind of 1. unlocking terminal equipment method, it is characterised in that including：Projected using structure light device to user, obtain the face 3D models of user；The face 3D models of the user are analyzed, extract the characteristic point information in the face 3D models；The characteristic point information is compared with the characteristic point information of the standard faces 3D models to prestore, obtains the user's Similarity between face 3D models and standard faces 3D models；Determine whether to be unlocked terminal device according to the similarity.
- 2. according to the method for claim 1, it is characterised in that it is described to be projected using structure light device to user, obtain The face 3D models at family are taken, including：Structured light projection is carried out to user using structure light device；The structured light projection of the user is imaged using video camera, obtains the face depth image of the user；With reference to the position relationship between the face depth image of the user, and the structure light device and the video camera, Calculate the face 3D models for obtaining the user.
- 3. method according to claim 1 or 2, it is characterised in that structure light caused by the structure light device is non-equal Even structure light.
- 4. according to the method for claim 1, it is characterised in that described by the characteristic point information and the standard faces to prestore The characteristic point information of 3D models is compared, and obtains similar between the face 3D models of the user and standard faces 3D models Degree, including：The characteristic point information of the face 3D models of the user is analyzed, obtains each device in the face 3D models of the user Positional information between the parameter information of official and each organ；The characteristic point information of the standard faces 3D models is analyzed, obtains each organ in the standard faces 3D models Positional information between parameter information and each organ；By the positional information in the face 3D models of the user between the parameter information of each organ and each organ, with the mark Positional information in quasi- face 3D models between the parameter information of each organ and each organ is compared, and obtains the user's Similarity between face 3D models and standard faces 3D models.
- 5. according to the method for claim 1, it is characterised in that it is described to be projected using structure light device to user, obtain Before taking the face 3D models at family, in addition to：Projected using structure light device to terminal user, obtain the standard faces 3D models of terminal user；The standard faces 3D models are analyzed, extract the characteristic point information in the standard faces 3D models；Store the characteristic point information in the standard faces 3D models.
- 6. according to the method for claim 1, it is characterised in that described to be determined whether according to the similarity to terminal device It is unlocked, including：If the similarity is more than or equal to predetermined threshold value, the terminal device is unlocked；If the similarity is less than predetermined threshold value, the terminal device is not unlocked.
- A kind of 7. unlocking terminal equipment device, it is characterised in that including：First projection module, for being projected using structure light device to user, obtain the face 3D models of user；First extraction module, for analyzing the face 3D models of the user, extract the spy in the face 3D models Sign point information；Comparing module, for analyzing the face 3D models of the user, extract the characteristic point in the face 3D models Information；Unlocked state, for determining whether to be unlocked terminal device according to the similarity.
- 8. device according to claim 7, it is characterised in that first projection module includes：Projecting cell, for determining whether to be unlocked terminal device according to the similarity.Image unit, for being imaged using video camera to the structured light projection of the user, obtain the face of the user Depth image；Computing unit, for the face depth image with reference to the user, and the structure light device and the video camera it Between position relationship, calculate the face 3D models for obtaining the user.
- 9. the device according to claim 7 or 8, it is characterised in that structure light caused by the structure light device is non-equal Even structure light.
- 10. device according to claim 7, it is characterised in that the comparing module includes：First analytic unit, the characteristic point information for the face 3D models to the user are analyzed, and obtain the user Face 3D models in each organ parameter information and each organ between positional information；Second analytic unit, for analyzing the characteristic point information of the standard faces 3D models, obtain the standard people Positional information in face 3D models between the parameter information of each organ and each organ；Comparing unit, for the position between the parameter information of each organ in the face 3D models by the user and each organ Information, it is compared with the positional information in the standard faces 3D models between the parameter information of each organ and each organ, Obtain the similarity between the face 3D models of the user and standard faces 3D models.
- 11. device according to claim 7, it is characterised in that also include：Second projection module, for being projected using structure light device to terminal user, obtain terminal user's Standard faces 3D models；Second extraction module, for analyzing the standard faces 3D models, extract in the standard faces 3D models Characteristic point information；Memory module, for storing the characteristic point information in the standard faces 3D models.
- 12. device according to claim 7, it is characterised in that the unlocked state is specifically used for,When the similarity is more than or equal to predetermined threshold value, the terminal device is unlocked；When the similarity is less than predetermined threshold value, the terminal device is not unlocked.
- 13. a kind of terminal device, it is characterised in that including following one or more assemblies：Housing and in the housing Processor and memory, wherein, the processor is run by reading the executable program code stored in the memory Program corresponding with the executable program code, for realizing the terminal device solution as described in any in claim 1-6 Locking method.
- 14. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, it is characterised in that the calculating The unlocking terminal equipment method as described in any in claim 1-6 is realized when machine program is executed by processor.
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| CN201710677498.9A CN107563304B (en) | 2017-08-09 | 2017-08-09 | Terminal equipment unlocking method and device and terminal equipment |
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