CN108881712A - Image processing method, device, computer readable storage medium and electronic equipment - Google Patents
Image processing method, device, computer readable storage medium and electronic equipment Download PDFInfo
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- CN108881712A CN108881712A CN201810404508.6A CN201810404508A CN108881712A CN 108881712 A CN108881712 A CN 108881712A CN 201810404508 A CN201810404508 A CN 201810404508A CN 108881712 A CN108881712 A CN 108881712A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00095—Systems or arrangements for the transmission of the picture signal
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Abstract
This application involves a kind of image processing method, device, computer readable storage medium and electronic equipments.The method includes：If detecting image capture instruction, precision grade corresponding to the destination application for initiating described image acquisition instructions is obtained；Target image is obtained according to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to speckle image adjusted；The speckle image is that the laser speckle acquired by Laser video camera head is irradiated on object and is formed by image；The target image is sent to the destination application.The safety of image procossing can be improved in above-mentioned image processing method, device, computer readable storage medium and electronic equipment.
Description
Technical field
This application involves field of computer technology, more particularly to a kind of image processing method, device, computer-readable deposit
Storage media and electronic equipment.
Background technique
In Internet era, to realize the communication of information and share, require to transmit data, therefore the biography of data
Defeated is extremely frequently and important.However data are usually all to be transmitted by general data transmission channel, therefore count
It is easily trapped according in transmission process.Data are once leaked, and will have great security risk.
Summary of the invention
The embodiment of the present application provides a kind of image processing method, device, computer readable storage medium and electronic equipment, can
To improve the safety of image procossing.
A kind of image processing method, including：
If detecting image capture instruction, obtain corresponding to the destination application for initiating described image acquisition instructions
Precision grade；
According to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to adjusted
Speckle image obtains target image；The speckle image is that the laser speckle acquired by Laser video camera head is irradiated to institute on object
The image of formation；
The target image is sent to the destination application.
A kind of image processing apparatus, including：
Precision obtains module, if obtaining the mesh for initiating described image acquisition instructions for detecting image capture instruction
Mark precision grade corresponding to application program；
Image adjustment module, of the speckle point for including in the speckle image according to precision grade adjustment acquisition
Number, and target image is obtained according to speckle image adjusted；The speckle image is the laser acquired by Laser video camera head
Speckle, which is irradiated on object, is formed by image；
Image sending module, for the target image to be sent to the destination application.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
Following steps are realized when row：
If detecting image capture instruction, obtain corresponding to the destination application for initiating described image acquisition instructions
Precision grade；
According to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to adjusted
Speckle image obtains target image；The speckle image is that the laser speckle acquired by Laser video camera head is irradiated to institute on object
The image of formation；
The target image is sent to the destination application.
A kind of electronic equipment, including memory and processor store computer-readable instruction in the memory, described
When instruction is executed by the processor, so that the processor executes following steps：
If detecting image capture instruction, obtain corresponding to the destination application for initiating described image acquisition instructions
Precision grade；
According to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to adjusted
Speckle image obtains target image；The speckle image is that the laser speckle acquired by Laser video camera head is irradiated to institute on object
The image of formation；
The target image is sent to the destination application.
Above-mentioned image processing method, device, computer readable storage medium and electronic equipment are detecting that Image Acquisition refers to
When enabling, precision grade corresponding to the available destination application for initiating image capture instruction.Then according to precision grade
The number for the speckle point for including in the speckle image of acquisition is adjusted, and target image is obtained according to speckle image adjusted.Most
Target image is sent to destination application afterwards.The target of different accuracy can be sent to different destination applications in this way
Image, the low destination application of application level, the precision of obtained target image are also relatively low, it is ensured that the target of transmission
The safety of image.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the application scenario diagram of image processing method in one embodiment；
Fig. 2 is the flow chart of image processing method in one embodiment；
Fig. 3 is the flow chart of image processing method in another embodiment；
Fig. 4 is the schematic diagram that depth information is calculated in one embodiment；
Fig. 5 is the flow chart of image processing method in another embodiment；
Fig. 6 is the flow chart of image processing method in another embodiment；
Fig. 7 is the hardware structure diagram that image processing method is realized in one embodiment；
Fig. 8 is the hardware structure diagram that image processing method is realized in another embodiment；
Fig. 9 is the software architecture schematic diagram that image processing method is realized in one embodiment；
Figure 10 is the structural schematic diagram of image processing apparatus in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
It is appreciated that term " first " used in this application, " second " etc. can be used to describe various elements herein,
But these elements should not be limited by these terms.These terms are only used to distinguish the first element from the other element.Citing comes
It says, in the case where not departing from scope of the present application, the first client can be known as the second client, and similarly, can incite somebody to action
Second client is known as the first client.The first client and the second client both client, but it is not same visitor
Family end.
Fig. 1 is the application scenario diagram of image processing method in one embodiment.As shown in Figure 1, including in the application scenarios
Electronic equipment 104, mountable camera module in electronic equipment 104, can also install several application programs.Application program can
The image capture instruction for initiating acquisition image, when electronic equipment 104 detects image capture instruction, available initiation image
Application level corresponding to the destination application of acquisition instructions, and corresponding precision grade is obtained according to application level.According to
The number for the speckle point for including in the speckle image 102 of precision grade adjustment acquisition, and obtained according to speckle image adjusted
Target image, speckle image 102 are that the laser speckle acquired by Laser video camera head is irradiated on object and is formed by image.Most
Target image is sent to destination application afterwards.Wherein, electronic equipment 104 can be smart phone, tablet computer, individual digital
Assistant, wearable device etc..
Fig. 2 is the flow chart of image processing method in one embodiment.As shown in Fig. 2, the image processing method includes step
Rapid 202 to step 206.Wherein：
Step 202, if detecting image capture instruction, the destination application institute for obtaining initiation image capture instruction is right
The precision grade answered.
Camera can be installed on electronic equipment, and image is obtained by the camera of installation.Camera can be according to obtaining
The difference of the image taken is divided into the first-class type of Laser video camera head, visible image capturing, and the available laser irradiation of Laser video camera head arrives
Image is formed by object, it is seen that be formed by image on the available radiation of visible light to object of light image.Electronic equipment
On several cameras can be installed, and the position installed is without limitation.For example, can pacify on the front panel of electronic equipment
A camera is filled, two cameras are overleaf installed on panel, camera can also be installed on electronics in a manner of embedded and set
Then camera is opened in standby inside by way of rotating or sliding.Specifically, mountable front camera on electronic equipment
And rear camera, front camera and rear camera can obtain image from different visual angles, general front camera can
To obtain image from the positive visual angle of electronic equipment, rear camera can obtain image from the back side visual angle of electronic equipment.
Several application programs, application program it can refer in electronic equipment for certain application purpose safely in electronic equipment
The software write, electronic equipment can realize the Demand and service to user by application program.For example, user can pass through trip
Class application program of playing plays game, can also carry out transaction payment by payment class application program, can also pass through music class application
Program plays music etc..When application program needs to acquire image, image capture instruction can be initiated, electronic equipment can basis
Image capture instruction calls camera module, acquires image.Image capture instruction refers to the finger for triggering Image Acquisition operation
It enables.For example, when user will shoot, can user can click button of taking pictures, electronic equipment recognizes button of taking pictures and is pressed
When lower, image capture instruction will be generated, so that camera module be called to acquire image.When user needs to prop up by face
When paying verifying, user can click payment button, and face's alignment camera is shot, and electronic equipment collects people
Payment verification can be carried out after face.
Application program can be written for unique identification one when initiating image capture instruction in image capture instruction
The application identities of application program.Electronic equipment is when detecting image capture instruction, so that it may be searched and be corresponded to according to application identities
Application level.Application level can also be directly written in image capture instruction by application program, and electronic equipment is detecting
When image capture instruction, so that it may directly acquire the application level in image capture instruction.Application level refers to application program
Significance level, such as application program can be divided into the application of system security classes, the non-security class application of system, third party's security classes application
With the non-security class application of third party, corresponding application level is gradually decreased.Application level can be stored in advance in the electronic device
With the corresponding relationship of precision grade, corresponding precision grade can be obtained according to application level.
Step 204, according to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to adjustment
Speckle image afterwards obtains target image；Speckle image is that the laser speckle acquired by Laser video camera head is irradiated to institute on object
The image of formation.
When detecting image capture instruction, color-changing lamp and Laser video camera head can be opened, the laser that color-changing lamp is formed dissipates
Spot can be irradiated on object, and the laser speckle then acquired by Laser video camera head, which is irradiated on object, is formed by speckle
Image.Specifically, dividing on these surfaces when laser irradiation is on the optically roughness surface that mean fluctuation is greater than number of wavelengths magnitude
The wavelet of the bin scattering of cloth, which is overlapped mutually, makes reflection light field that there is random spatial light intensity to be distributed, and shows granular knot
Structure, here it is laser speckles.Include several laser speckle points in the laser speckle of formation, therefore is acquired by Laser video camera head
Speckle pattern in also include several speckle points, such as may include 30000 speckle points in speckle image.The laser speckle of formation
With height random, therefore the laser laser speckle generated that different laser transmitter projects come out is different.Work as formation
Laser speckle when being irradiated on different depth and the object of shape, the speckle image of generation is different.By different
The laser speckle that laser emitter is formed has uniqueness, and the speckle image obtained from also has uniqueness.
Specifically, the CPU (Central Processing Unit, central processing unit) of electronic equipment, which can receive, comes from
The instruction of upper level applications.When CPU receives image capture instruction, so that it may control camera module and work, lead to
Cross camera module acquisition infrared image and speckle image.It can be, but not limited to include Laser video camera head, radium in camera module
Shot-light and floodlight.CPU can control color-changing lamp and floodlight carries out time-sharing work, when color-changing lamp is opened, control Laser video camera
Head acquisition speckle image；When floodlight is opened, control Laser video camera head acquires infrared image.
Electronic equipment can calculate object to the depth information of camera according to the speckle image of acquisition, wrap in speckle image
The speckle point contained is more, and the precision for the depth information being calculated is more accurate.Color-changing lamp can launch several laser speckles
Point, when laser speckle point is irradiated on the object of different distance, the speckle displacement presented on the image is different.Electronic equipment can
To acquire the reference picture of a standard in advance, reference picture is that laser speckle is irradiated in plane and is formed by image.So
Speckle point on reference picture is usually equally distributed, then establishes each speckle point and reference depth in the reference picture
Corresponding relationship.When needing to acquire speckle image, control color-changing lamp issues laser speckle, and laser speckle is irradiated on object it
Afterwards, speckle image is collected by Laser video camera head.It then will be in each of speckle image speckle point and reference picture
Speckle point be compared, obtain positional shift of the speckle point relative to speckle point corresponding in reference picture in speckle image
Amount, and the position offset of speckle point obtains the corresponding real depth information of speckle point with reference depth.
The infrared image of camera acquisition with speckle image be it is corresponding, speckle image can be used for calculating in infrared image
The corresponding depth information of each pixel.Face can be detected and be identified by infrared image in this way, according to speckle
The corresponding depth information of face can be calculated in image.Specifically, first during calculating depth information according to speckle image
First relative depth is calculated according to the opposite position offset with the speckle point of reference picture of speckle image, relative depth can be with table
Show actual photographed object to reference planes depth information.Then object is calculated further according to the relative depth of acquisition and reference depth
Real depth information.Depth image can be the object of expression to referring to for indicating the corresponding depth information of infrared image
The relative depth of plane, be also possible to object to camera absolute depth.
The number that the speckle point for including in speckle image is adjusted according to precision grade, can be adjusted by way of software
It is whole, it can also be adjusted by way of hardware.When software mode adjusts, the speckle in the speckle pattern of acquisition can be directly detected
Point, and speckle point in part is merged or Processing for removing, the quantity for the speckle point for including in speckle pattern adjusted in this way is just
Reduce.When hardware mode adjusts, the number for the laser speckle point that adjustable color-changing lamp diffraction generates.For example, by speckle pattern
The speckle o'clock for including as in is adjusted to 20000 from 30000, and the precision of the depth image being calculated corresponding in this way will phase
It reduces with answering.It, can be according to adjustment after electronic equipment adjusts the number for the speckle point for including in speckle image according to precision grade
Speckle image afterwards obtains target image.Target image can be speckle image adjusted, be also possible to according to adjusted
The depth image that speckle image is calculated.
Step 206, target image is sent to destination application.
After getting target image, corresponding destination application can be searched according to application identities, and by target figure
As being sent to destination application.Destination application can be paid according to target image, be unlocked, U.S. face, AR
Application operatings such as (Augmented Reality, augmented realities).
Image processing method provided by the above embodiment, when detecting image capture instruction, available initiation image
Application level corresponding to the destination application of acquisition instructions, and corresponding precision grade is obtained according to application level.Then
It is obtained according to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to speckle image adjusted
Target image.Target image is finally sent to destination application.Different destination applications can be sent not in this way
With the target image of precision, the low destination application of application level, the precision of obtained target image is also relatively low, in this way may be used
To guarantee the safety of the target image sent.
Fig. 3 is the flow chart of image processing method in another embodiment.As shown in figure 3, the image processing method includes
Step 302 is to step 310.Wherein：
Step 302, if detecting image capture instruction, the destination application institute for obtaining initiation image capture instruction is right
The application level answered, and obtain the security level of the corresponding application operating of image capture instruction.
It, can be by applying journey after application operating refers to that application program is opened in the operation that application program needs to complete, user
Sequence completes different application operatings.For example, application operating can be delivery operation, shooting operation, unlock operation, game operation
Deng.The security level of application operating refers to application operating to the grade of security requirement.For example, delivery operation is to data processing
Security requirement is relatively high, then the corresponding security level of delivery operation is with regard to relatively high；Safety of the shooting operation to data processing
Property require it is relatively low, then the corresponding security level of shooting operation is with regard to relatively low.
Specifically, application program can identify in write operation when initiating image capture instruction in image capture instruction,
The operation mark is for uniquely indicating application operating.For example, the corresponding operation mark of delivery operation is " pay ", shooting
Operating corresponding operation mark is " photo ".Electronic equipment can be obtained according to the application identities for including in image capture instruction
Corresponding application level, and corresponding security level is obtained according to operation mark.
Step 304, precision grade is obtained according to application level and security level.
In one embodiment, precision is obtained according to the application level of destination application and the security level of application operating
The application level of rank, destination application is higher, and the security level of application operating is higher, and corresponding precision grade is higher.Tool
Body, application program can be divided into multiple application levels, the corresponding first precision weight of each application level.Using
Operation can also be divided into multiple security levels, the corresponding second precision weight of each security level.Target is got to answer
After the application level and security level of degree, available application level corresponding first precision weight, and safety etc.
The corresponding second precision weight of grade, and according to the first precision weight and the second precision weight computing precision weight, then determine precision
The precision grade that weight is fallen into.
For example, the application level of application program can be divided into five grades, and application level is corresponding from low to high
First precision weight is respectively 0.2,0.4,0.6,0.8,1.Application operating is divided into four security levels, and security level is from low to high
Corresponding second precision weight is respectively 0.25,0.5,0.75,1.Precision grade can be divided into 3 grades, precision grade from as low as
Precision weight corresponding to height is respectively 0~0.4,0.4~0.8,0.8~1.According to the first precision weight (a) and the second precision
The calculation formula of weight (b) computational accuracy weight (D) is：D=0.5*a+0.5*b.Assuming that the application level of destination application
It is 3 grades, the security level of corresponding application operating is 2 grades, then the first obtained precision weight is just 0.6, the second precision power
Value is just 0.5.The precision weight being calculated just is 0.5*0.6+0.5*0.5=0.55, then corresponding precision grade is just 2
Grade.
Step 306, according to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to adjustment
Speckle image afterwards obtains target image.
Electronic equipment may include first processing units, camera module and the second processing unit, and first processing units are
Run under one security context, the second processing unit is run under the second security context, first processing units respectively with camera mould
Group is connected with the second processing unit, and camera module is connected with the second processing unit.The image capture instruction that application program is initiated
First processing units can be sent to, after first processing units detect image capture instruction, can be referred to according to Image Acquisition
It enables control camera module acquire speckle image, and the speckle image of acquisition is sent to the second processing unit.Second processing list
Member can calculate anaglyph according to speckle image, and speckle image and anaglyph are sent to first processing units.At first
Reason unit is corrected speckle image further according to anaglyph, and obtains target image according to the speckle image after correction, will
Target image is sent to destination application.
Specifically, it can be, but not limited to include Laser video camera head, color-changing lamp and floodlight in camera module.At first
When reason unit receives image capture instruction, first processing units can control color-changing lamp and floodlight carries out time-sharing work, work as radium
When shot-light is opened, speckle image is acquired by Laser video camera head；When floodlight is opened, infrared figure is acquired by Laser video camera head
Picture.Anaglyph is used for the error for indicating to generate in image acquisition process, it may include infrared anaglyph and speckle anaglyph,
Infrared anaglyph is for being corrected infrared image, and speckle anaglyph is for being corrected speckle image.For example, swashing
Light video camera head generates deflection, then the speckle image obtained just needs the error generated to the deflection to be corrected, obtains standard
Speckle image.
It is understood that the infrared image and speckle image of camera acquisition be it is corresponding, can be with according to speckle image
Calculate the corresponding depth information of infrared image.Camera is just necessary if it is acquisition time infrared image and speckle image
Guarantee that the time interval of acquisition infrared image and speckle image is very short, just can guarantee that infrared image is consistent with speckle image
Property.The time interval between the first moment of infrared image and the second moment of acquisition speckle image is acquired less than the first threshold
Value.First threshold is usually a smaller value, can be adjusted according to the changing rule of subject.Subject
The variation of body is faster, and the corresponding first threshold obtained is smaller.Assuming that this if subject remains static for a long time
One threshold value can be set as a biggish value.Specifically, the pace of change of subject is obtained, according to the pace of change
Obtain corresponding first threshold.
Specifically, floodlight lamp controller and radium-shine lamp controller can be respectively set in electronic equipment, and first processing units pass through
Two-way PWM is separately connected floodlight lamp controller and radium-shine lamp controller, when first processing units need to control floodlight open or
When color-changing lamp is opened, impulse wave can be emitted to floodlight lamp controller by PWM and control floodlight and opened or to radium-shine lamp controller
Emit impulse wave control color-changing lamp to open, impulse wave is emitted to two controllers respectively by PWM to control acquisition infrared image
Time interval between speckle image.Time interval between collected infrared image and speckle image is lower than the first threshold
Value, it is ensured that the consistency of collected infrared image and speckle image, avoid between infrared image and speckle image exist compared with
Big error improves the accuracy to image procossing.
For example, when mobile phone needs to carry out certification unlock by face, user can click solving locking key and initiate unlock
Instruction, and front camera alignment face is shot.Mobile phone can send unlock instruction to first processing units, at first
Reason unit controls camera again and works.Infrared image is acquired by the first camera module first, is spaced 1 millisecond of time
Afterwards, then second camera mould group acquisition speckle image is controlled, and infrared image and speckle image by acquiring carry out certification solution
Lock.
In one embodiment, to different destination applications, the speckle image of different accuracy is sent.Adjust speckle pattern
The method for the speckle point number for including as in specifically includes：It is adjusted according to precision grade in the laser speckle that color-changing lamp diffraction generates
The number for the speckle point for including, and be irradiated on object by Laser video camera head acquisition laser speckle and be formed by speckle image；
It is formed by speckle image or, acquiring preset laser speckle by Laser video camera head and being irradiated on object, and according to levels of precision
The number for the speckle point that Tiao Zheng do not include in speckle image.Can in color-changing lamp preset different diffraction optical element
(Diffractive Optical Elements, DOE), wherein the number for the speckle point that difference DOE diffraction is formed is different.According to
Precision grade switches different DOE and carries out diffraction generation speckle image, and obtains different accuracy according to obtained speckle image
Depth map.When precision grade is higher, color-changing lamp can control the more DOE of speckle point number to emit laser speckle, to obtain
The speckle image for taking speckle point number more；The DOE that color-changing lamp can control speckle point number less when precision grade is lower comes
Emit laser speckle, to obtain the less speckle image of speckle point number.
Specifically, if adjusting speckle point number by color-changing lamp, then first processing units can be according to the figure received
As acquisition instructions acquisition precision grade, and switch different DOE according to precision grade, swashs so as to adjust what color-changing lamp diffraction generated
The number for the speckle point for including in light speckle, and by Laser video camera head acquire laser speckle be irradiated on object be formed by it is scattered
Spot image.If adjusting speckle point number by software mode, then first processing units are according to anaglyph to speckle image
It is corrected after obtaining correction speckle image, the speckle point number for including in correction speckle image can be adjusted according to precision grade.
The method for obtaining target image specifically includes：Depth image is calculated according to speckle image adjusted, it will be deep
Image is spent as target image；Or, using speckle image adjusted as target image.Specifically, electronic equipment can be right in advance
Laser speckle is demarcated to obtain a reference picture, and in the electronic device by reference pictures store.Generally, reference picture
It is that laser speckle is irradiated to a reference planes and is formed, reference picture is also one and refers to speckle point with several
Image, it is each to have corresponding reference depth information with reference to speckle point.When needing to obtain the depth information of subject, just
The speckle image of actual acquisition can be compared with reference picture, and according to speckle point in the speckle image of actual acquisition
Offset calculates actual depth information.The step of calculating depth image specifically includes：Obtain reference picture；By reference picture
It is compared to obtain offset information with speckle image, offset information is for indicating that speckle point is relative to reference picture in speckle image
The horizontal offset of middle corresponding speckle point；Depth image is calculated according to offset information and reference depth information.
Fig. 4 is the schematic diagram that depth information is calculated in one embodiment.As shown in figure 4, laser can be generated in color-changing lamp 402
Speckle, laser speckle obtain the image formed after object is reflected, through Laser video camera head 404.In the mark of camera
During fixed, the laser speckle that color-changing lamp 402 emits can be reflected by reference planes 408, then pass through Laser video camera head
404 acquisition reflection lights obtain reference picture by the imaging of imaging plane 410.Reference planes 408 arrive the reference of color-changing lamp 402
Depth is L, which is known.During actually calculating depth information, the laser speckle of the transmitting of color-changing lamp 402
It can be reflected by object 406, then reflection light is acquired by Laser video camera head 404, reality is obtained by the imaging of imaging plane 410
The speckle image on border.Then the calculation formula of available actual depth information is：
Wherein, L is that color-changing lamp 402 arrives the distance between reference planes 408, and f is the coke of lens in Laser video camera head 404
Be color-changing lamp 402 the distance between to Laser video camera head 404 away from, CD, AB be object 406 imaging and reference planes 408 at
Offset distance as between.AB can be the product of pixel-shift amount n and the actual range p of pixel.When object 404 arrives color-changing lamp
When the reference planes 406 that the distance between 402 Dis are greater than arrive the distance between color-changing lamp 402 L, AB is negative value；When object 404 arrives
When the reference planes 406 that the distance between color-changing lamp 402 Dis are less than arrive the distance between color-changing lamp 402 L, AB is positive value.
Step 308, pre-stored reference picture in electronic equipment is obtained, and is carried out target image according to reference picture
Encryption.
Before target image is sent to destination application, target image can be encrypted.Reference picture
It is electronic equipment in the speckle image for carrying out mark timing acquiring to camera module, since reference picture has height uniqueness,
The reference picture of different electronic equipment acquisitions is different.So reference picture itself can serve as the close of an encryption
Key, for data are encrypted.Reference picture can be stored in security context by electronic equipment, can be prevented in this way
Leaking data.Specifically, the reference picture of acquisition is made of a two-dimensional picture element matrix, each pixel has pair
The pixel value answered.Target image can be encrypted according to all or part of pixel of reference picture.For example, can be with
Reference picture is directly overlapped with target image, an encrypted image is obtained.It can also be with the corresponding pixel square of target image
Battle array picture element matrix corresponding with reference picture carries out product calculation, obtains encrypted image.It can also go some in reference picture
Or the corresponding pixel value of multiple pixels is encrypted target image as encryption key, specific Encryption Algorithm is at this
Embodiment is without limitation.
Step 310, the target image after encryption is sent to destination application.
Reference picture is generated in electronic equipment calibration, then reference picture can be stored in advance in peace by electronic equipment
In full ambient engine, when needing to encrypt target image, reference picture is read in a secure environment, and according to reference to figure
As target image is encrypted.Meanwhile an identical ginseng can be stored on the corresponding server of destination application
Image is examined, target image after electronic equipment is by encryption is sent to after the corresponding server of destination application, mesh
The server for marking application program obtains reference picture, and encrypted target image is decrypted according to the reference picture of acquisition
Processing.
It is understood that the ginseng of multiple distinct electronic apparatuses acquisition may be stored in the server of destination application
Examine image, the corresponding reference picture of each electronic equipment is different.Therefore, one can be defined to each reference picture in server
A reference picture mark, and the device identification of electronic equipment is stored, it then establishes between reference picture mark and device identification
Corresponding relationship.When server receives target image, the target image received can carry the equipment mark of electronic equipment simultaneously
Know.Server can search corresponding reference picture according to device identification and identify, and find correspondence according to reference picture mark
Reference picture, then target image is decrypted according to the reference picture that finds.
In other embodiments provided by the present application, specifically it can wrap according to the method that reference picture is encrypted
It includes：The corresponding picture element matrix of reference picture is obtained, encryption key is obtained according to the picture element matrix；According to encryption key to target figure
As being encrypted.
Specifically, reference picture is made of a two-dimensional pixel matrix, due to the reference picture of acquisition be it is unique,
Therefore the corresponding picture element matrix of reference picture is also unique.The picture element matrix itself can be used as an encryption key to target
Image is encrypted, and certain encryption key that is converted to, then the encryption by being converted to can also be carried out to picture element matrix
Key pair target image is encrypted.For example, picture element matrix is the two-dimensional matrix being made of multiple pixel values,
Position of each pixel value in picture element matrix can be indicated by a two-dimensional coordinate, then can pass through one or more
A position coordinates obtain corresponding pixel value, and the one or more pixel value that will acquire is combined into an encryption key.It obtains
After getting encryption key, target image can be encrypted according to encryption key, specifically Encryption Algorithm is in this reality
It applies in example without limitation.For example, can directly be overlapped encryption key and target image or product, or can will encrypt
Key obtains final encrypted target image as in a numerical value insertion target image.
Electronic equipment can also use different Encryption Algorithm to different application programs.Specifically, electronic equipment can be with
The application identities of application program and the corresponding relationship of Encryption Algorithm are pre-established, may include target application journey in image capture instruction
The target application of sequence identifies.After receiving image capture instruction, the target application that includes in available image capture instruction
Mark, and corresponding Encryption Algorithm is obtained according to target application mark, target image is added according to the Encryption Algorithm of acquisition
Close processing.
It in one embodiment, can also be according to initiation image capture instruction when target image is encrypted
Duration carry out different degrees of encryption.Specifically：
Step 502, the timestamp for including in image capture instruction is obtained, timestamp initiates image capture instruction for indicating
At the time of.
Destination application when initiating image capture instruction, stab by meeting write time in image capture instruction.The time
At the time of stamp can indicate to initiate image capture instruction, the duration for initiating image capture instruction may determine that according to timestamp.Example
Such as, when destination application initiate image capture instruction when, destination application can initiate be at the time of image capture instruction
" on February 12,11 2015:23:01 ", it then will acquire the moment as in timestamp write-in image capture instruction.
Step 504, secret grade is obtained according to the interval duration of timestamp to current time, according to reference picture to target
Image carries out the corresponding encryption of secret grade.
When the first processing units of electronic equipment send target image, include in available image capture instruction when
Between stab, and obtain current time.Secret grade is obtained according to the interval duration of timestamp to current time, and according to reference picture
The corresponding encryption of secret grade is carried out to target image.The interval duration at timestamp to current time is longer, is considered as getting over
Dangerous, then the secret grade for corresponding to encryption is higher.Specifically, when being spaced duration more than duration threshold value, then it is assumed that when
Preceding response timeout, directly abandons target image, and target image is no longer sent to destination application.When interval, duration is less than
When duration threshold value, then target image is sent to destination application.Then step 504 can specifically include：If timestamp is to working as
The interval duration at preceding moment is less than duration threshold value, then secret grade is obtained according to above-mentioned interval duration, according to reference picture to mesh
Logo image carries out the corresponding encryption of secret grade.
In one embodiment, the step of above-mentioned image processing method transmission target image can also include：
Step 602, the operating status of destination application is obtained；
Step 604, if destination application is front stage operation, target image is sent to destination application.
For electronic equipment when running application program, the operating status of application program can be divided into front stage operation and running background.
The application program of front stage operation can be interacted with user, and the application program of running background cannot generally be handed over user
Mutually.Before sending target image, it can be determined that the operating status of destination application, if destination application is in backstage and transports
Row, then it is assumed that be that background application illegally calls camera collection image.If destination application is in front stage operation, then
Target image is sent to destination application.
Image processing method provided by the above embodiment, when detecting image capture instruction, available initiation image
The security level of application level corresponding to the destination application of acquisition instructions and application operating, and according to the peace of application level
Congruent grade obtains corresponding precision grade.Then according to for the speckle point for including in the speckle image of precision grade adjustment acquisition
Number, and target image is obtained according to speckle image adjusted.Finally target image is encrypted according to reference picture,
And encrypted target image is sent to destination application.Different essences can be sent to different destination applications in this way
The target image of degree, the low destination application of application level, the precision of obtained target image is also relatively low, can protect in this way
Demonstrate,prove the safety of the target image sent.Meanwhile when sending target image, passed again after target image being encrypted
It is defeated, further increase the safety of image procossing.
Although should be understood that Fig. 2, Fig. 3, Fig. 5, Fig. 6 flow chart in each step according to arrow instruction according to
Secondary display, but these steps are not that the inevitable sequence according to arrow instruction successively executes.Unless having herein explicitly
Bright, there is no stringent sequences to limit for the execution of these steps, these steps can execute in other order.Moreover, Fig. 2,
At least part step in Fig. 3, Fig. 5, Fig. 6 may include multiple sub-steps perhaps these sub-steps of multiple stages or rank
Section is not necessarily to execute completion in synchronization, but can execute at different times, these sub-steps or stage
Execution sequence is also not necessarily and successively carries out, but can be with the sub-step or stage of other steps or other steps extremely
Few a part executes in turn or alternately.
Fig. 7 is the hardware structure diagram that image processing method is realized in one embodiment.As shown in fig. 7, in the electronic equipment
It may include camera module 710, central processing unit (CPU) 720 and first processing units 730, wrapped in above-mentioned camera module 710
Include Laser video camera head 712, floodlight 714, RGB (Red/Green/Blue, red green blue color mode) camera 716 and radium-shine
Lamp 718.First processing units 730 include PWM (Pulse Width Modulation, pulse width modulation) module 732, SPI/
I2C (Serial Peripheral Interface/Inter-Integrated Circuit, Serial Peripheral Interface (SPI)/two-way two
Line synchronous serial interface) module 734, RAM (Random Access Memory, random access memory) module 736,
Depth Engine module 738.Wherein, the second processing unit 722 can be in TEE (Trusted execution
Environment, credible running environment) under CPU core, first processing units 730 can be MCU (Microcontroller
Unit, micro-control unit) processor.It is understood that central processing unit 720 can be multicore operational mode, central processing
CPU core in device 720 can be transported at TEE or REE (Rich Execution Environment, natural running environment)
Row.TEE and REE is the operation mould of ARM module (Advanced RISC Machines, Advanced Reduced Instruction Set processor)
Formula.Under normal conditions, the higher operation behavior needs of safety are executed at TEE in electronic equipment, other operation behaviors then may be used
It is executed at REE.In the embodiment of the present application, when central processing unit 720 receives the security requirement of destination application initiation
Higher image capture instruction, such as when destination application needs face information to be unlocked, destination application needs people
When face information is paid, the CPU core run under TEE i.e. the second processing unit 722, can by SECURE SPI/I2C to
SPI/I2C module 734 sends image capture instruction in MCU730, and first processing units 730 emit pulse by PWM module 732
Floodlight 714 is opened to acquire infrared image, control color-changing lamp 718 in camera module 710 in wave control camera module 710
It opens to acquire speckle pattern.Camera module 710 can send collected speckle pattern in first processing units 730 Depth
Engine module 738, Depth Engine module 738 can calculate infrared anaglyph according to infrared image, and according to speckle pattern
As calculating speckle anaglyph, then infrared image, infrared anaglyph, speckle image and speckle anaglyph are sent to second
Processing unit 722.The second processing unit 722 can be corrected to obtain according to infrared anaglyph to infrared image corrects infrared figure
Picture, and speckle image is corrected according to speckle anaglyph to obtain correction speckle image.Then the second processing unit 722 can
Depth image is calculated according to correction speckle image, and recognition of face is carried out according to correction infrared image, detects above-mentioned school
Whether matched with the presence or absence of face and the face detected with the face of storage in positive infrared image；If recognition of face passes through,
In vivo detection is carried out further according to above-mentioned correction infrared image and depth image, detects whether above-mentioned face is living body faces.?
In one embodiment, after getting correction infrared image and depth image, it can first carry out In vivo detection and carry out recognition of face again,
Or recognition of face and In vivo detection are carried out simultaneously.After the face that recognition of face passes through and detects is living body faces, at second
Manage unit 722 can by one of above-mentioned correction infrared image, correction speckle image, depth image and face recognition result or
It is a variety of to be sent to destination application.
Fig. 8 is the hardware structure diagram that image processing method is realized in another embodiment.As shown in figure 8, the hardware configuration
In include first processing units 80, camera module 82 and the second processing unit 84.It include Laser video camera in camera module 82
First 820, floodlight 822, RGB camera 824 and color-changing lamp 826.It wherein, may include the CPU under TEE in central processing unit
Kernel and the CPU core under the REE, first processing units 80 are the DSP processing module opened up in central processing unit, at second
Managing unit 84 is the CPU core under TEE, and the second processing unit 84 and first processing units 80 can pass through a safety
(secure buffer) is attached for buffer area, can guarantee the safety in image transmitting process in this way.Under normal conditions,
Central processing unit is needed for processor cores to be switched under TEE and is executed when handling the higher operation behavior of safety, safety
Lower operation behavior can then be executed at REE.In the embodiment of the present application, upper layer application can be received by the second processing unit 84
The image capture instruction of transmission, when the corresponding application operating of the received image capture instruction of the second processing unit 84 is safety operation
When, floodlight 822 in impulse wave control camera module 82 can be emitted by PWM module and is opened to acquire infrared image, then
Color-changing lamp 826 in camera module 82 is controlled to open to acquire speckle image.Camera module 82 can be by collected infrared figure
Picture and speckle image are sent in first processing units 80, and depth map can be calculated according to speckle image in first processing units 80
Then picture is calculated depth parallax image according to depth image, and infrared anaglyph is calculated according to infrared image.So
Infrared anaglyph and depth parallax image are sent to the second processing unit 84 afterwards.The second processing unit 84 can be according to infrared
Anaglyph is corrected to obtain correction infrared image, and is corrected to obtain correction depth image according to depth parallax image.
The second processing unit 84 can carry out face authentication according to infrared image, detect and whether there is face in above-mentioned correction infrared image,
And whether the face detected matches with the face of storage；If face authentication passes through, further according to above-mentioned correction infrared image and
Correction depth image carries out In vivo detection, judges whether above-mentioned face is living body faces.People is carried out in the second processing unit 84
After face certification and In vivo detection processing, processing result can be sent to destination application, destination application is further according to detection
The application operatings such as a result it is unlocked, pays.
Fig. 9 is the software architecture schematic diagram that image processing method is realized in one embodiment.As shown in figure 9, the software frame
Structure includes application layer 910, operating system 920 and secure operating environment 930.Wherein, the module in secure operating environment 930
Including first processing units 931, camera module 932, the second processing unit 933 and encrypting module 934 etc.；Operating system 930
In include safety management module 921, face management module 922, webcam driver 923 and camera frame 924；Application layer 910
In include application program 911.Application program 911 can initiate image capture instruction, and image capture instruction is sent to first
Processing unit 931 is handled.For example, being paid, being unlocked, U.S. face, augmented reality by acquiring face
When (Augmented Reality, AR) etc. is operated, application program can initiate the image capture instruction of acquisition facial image.It can be with
Understand, the image command that application program 911 is initiated can be sent initially to the second processing unit 933, then by second processing
Unit 933 is sent to first processing units 931.
After first processing units 931 receive image capture instruction, if judging the corresponding application behaviour of image capture instruction
As safety operation (such as payment, unlock operation), then camera module 932 can be controlled according to image capture instruction and acquire infrared figure
Picture and speckle image, the infrared image and speckle image that camera module 932 acquires are transferred to first processing units 931.First
Depth image including depth information is calculated according to speckle image in processing unit 931, and is calculated according to depth image
Infrared anaglyph is calculated according to infrared image in depth parallax image.Then pass through secure transmission tunnel for depth parallax
Image and infrared anaglyph are sent to the second processing unit 933.The second processing unit 933 can be carried out according to infrared anaglyph
Correction obtains correction infrared image, is corrected to obtain correction depth image according to depth parallax image.Then red according to correcting
Outer image carries out face authentication, detects in above-mentioned correction infrared image with the presence or absence of face, and the face detected and storage
Face whether match；If face authentication passes through, living body is carried out further according to above-mentioned correction infrared image and correction depth image
Detection, judges whether above-mentioned face is living body faces.The face recognition result that the second processing unit 933 obtains, which can be sent to, to be added
Encrypted face recognition result after being encrypted by encrypting module 934, is sent to safety management module by close module 934
921.Generally, different application programs 911 has corresponding safety management module 921, and safety management module 921 can will encrypt
Face recognition result afterwards is decrypted, and the face recognition result obtained after decryption processing is sent to corresponding face
Management module 922.Face recognition result can be sent to the application program 911 on upper layer, application program by face management module 922
911 carry out corresponding operation further according to face recognition result.
If the corresponding application operating of the image capture instruction that first processing units 931 receive is non-secure operations (such as beauty
Face, AR operation), then first processing units 931 can control camera module 932 and acquire speckle image, and according to speckle image
Depth image is calculated, depth parallax image is then obtained according to depth image.First processing units 931 can pass through non-secure transfer
Depth parallax image is sent to webcam driver 923 by channel, and webcam driver 923 is corrected further according to depth parallax image
Processing obtains correction depth image, correction depth image is then sent to camera frame 924, then by camera frame 924
It is sent to face management module 922 or application program 911.
Figure 10 is the structural schematic diagram of image processing apparatus in one embodiment.As shown in Figure 10, the image processing apparatus
1000 include that precision obtains module 1002, image adjustment module 1004 and image sending module 1006.Wherein：
Precision obtains module 1002, if obtaining for detecting image capture instruction and initiating described image acquisition instructions
Destination application corresponding to precision grade.
Image adjustment module 1004, the speckle point for including in the speckle image according to precision grade adjustment acquisition
Number, and according to speckle image adjusted obtain target image；The speckle image is acquired by Laser video camera head
Laser speckle, which is irradiated on object, is formed by image.
Image sending module 1006, for the target image to be sent to the destination application.
Image processing apparatus provided by the above embodiment, when detecting image capture instruction, available initiation image
Precision grade corresponding to the destination application of acquisition instructions.Then it is wrapped according in the speckle image of precision grade adjustment acquisition
The number of the speckle point contained, and target image is obtained according to speckle image adjusted.Target image is finally sent to target
Application program.The target image of different accuracy, the low target of application level can be sent to different destination applications in this way
The precision of application program, obtained target image is also relatively low, can guarantee the safety of the target image sent in this way.
In one embodiment, the target that precision acquisition module 1002 is also used to obtain initiation described image acquisition instructions is answered
The application level corresponding to program, and obtain the security level of the corresponding application operating of image capture instruction；It is answered according to described
Precision grade is obtained with grade and security level.
In one embodiment, image adjustment module 1004 is also used to adjust color-changing lamp diffraction according to the precision grade raw
At laser speckle in include speckle point number, and the laser speckle is acquired by Laser video camera head and is irradiated on object
It is formed by speckle image；Speckle is formed by or, acquiring preset laser speckle by Laser video camera head and being irradiated on object
Image, and the number for the speckle point for including in the speckle image is adjusted according to the precision grade.
In one embodiment, image adjustment module 1004 is also used to that depth is calculated according to speckle image adjusted
Image, using the depth image as target image；Or, using speckle image adjusted as target image.
In one embodiment, image adjustment module 1004 is also used to obtain the operating status of the destination application；
If the destination application is front stage operation, the target image is sent to the destination application.
In one embodiment, image adjustment module 1004 is also used to obtain pre-stored with reference to figure in electronic equipment
Picture, and the target image is encrypted according to the reference picture, the reference picture, which is obtained by calibrating, includes
With reference to the image of speckle point；Target image after encryption is sent to the destination application.
In one embodiment, image adjustment module 1004 is also used to obtain the timestamp for including in image capture instruction,
At the time of the timestamp is for indicating to initiate described image acquisition instructions；When according to the interval of the timestamp to current time
It is long to obtain secret grade, the corresponding encryption of the secret grade is carried out to the target image according to the reference picture.
The division of modules is only used for for example, in other embodiments, can will scheme in above-mentioned image processing apparatus
As processing unit is divided into different modules as required, to complete all or part of function of above-mentioned image processing apparatus.
The embodiment of the present application also provides a kind of computer readable storage mediums.One or more is executable comprising computer
The non-volatile computer readable storage medium storing program for executing of instruction, when the computer executable instructions are executed by one or more processors
When, so that the processor executes image processing method provided by the above embodiment.
A kind of computer program product comprising instruction, when run on a computer, so that computer executes image
Processing method.
Any reference to memory, storage, database or other media used in this application may include non-volatile
And/or volatile memory.Suitable nonvolatile memory may include read-only memory (ROM), programming ROM (PROM),
Electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include arbitrary access
Memory (RAM), it is used as external cache.By way of illustration and not limitation, RAM is available in many forms, such as
It is static RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDR SDRAM), enhanced
SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM).
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application the scope of the patents therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application
Protect range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of image processing method, which is characterized in that including：
If detecting image capture instruction, precision corresponding to the destination application for initiating described image acquisition instructions is obtained
Rank；
According to the number for the speckle point for including in the speckle image of precision grade adjustment acquisition, and according to speckle adjusted
Image obtains target image；The speckle image is that the laser speckle acquired by Laser video camera head is irradiated on object and is formed
Image；
The target image is sent to the destination application.
2. the method according to claim 1, wherein the target for obtaining initiation described image acquisition instructions is answered
The precision grade corresponding to program, including：
It obtains and initiates application level corresponding to the destination application of described image acquisition instructions, and obtain image capture instruction
The security level of corresponding application operating；
Precision grade is obtained according to the application level and security level.
3. the method according to claim 1, wherein the speckle pattern according to precision grade adjustment acquisition
The number for the speckle point for including as in, including：
The number for the speckle point for including in the laser speckle that color-changing lamp diffraction generates is adjusted according to the precision grade, and by swashing
The light video camera head acquisition laser speckle, which is irradiated on object, is formed by speckle image；Or,
It is irradiated on object by the preset laser speckle of Laser video camera head acquisition and is formed by speckle image, and according to the essence
The number for the speckle point for including in speckle image described in degree rank adjusting.
4. the method according to claim 1, wherein described obtain target figure according to speckle image adjusted
Picture, including：
Depth image is calculated according to speckle image adjusted, using the depth image as target image；Or,
Using speckle image adjusted as target image.
5. the method according to claim 1, wherein described be sent to the target application for the target image
Program, including：
Pre-stored reference picture in electronic equipment is obtained, and is encrypted the target image according to the reference picture
Processing, the reference picture are the image obtained by calibrating comprising with reference to speckle point；
Target image after encryption is sent to the destination application.
6. according to the method described in claim 5, it is characterized in that, it is described according to the reference picture by the target image into
Row encryption, including：
Obtain image capture instruction in include timestamp, the timestamp be used for indicates initiation described image acquisition instructions when
It carves；
Secret grade is obtained according to the interval duration of the timestamp to current time, according to the reference picture to the target
Image carries out the corresponding encryption of the secret grade.
7. method according to any one of claim 1 to 6, which is characterized in that described to be sent to the target image
The destination application, including：
Obtain the operating status of the destination application；
When the destination application is in front stage operation, the target image is sent to the destination application.
8. a kind of image processing apparatus, which is characterized in that including：
Precision obtains module, if the target for obtaining initiation described image acquisition instructions is answered for detecting image capture instruction
The precision grade corresponding to program；
Image adjustment module, the number of the speckle point for including in the speckle image according to precision grade adjustment acquisition,
And target image is obtained according to speckle image adjusted；The speckle image is the laser speckle acquired by Laser video camera head
It is irradiated on object and is formed by image；
Image sending module, for the target image to be sent to the destination application.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt
The method as described in any one of claims 1 to 7 is realized when processor executes.
10. a kind of electronic equipment, including memory and processor, computer-readable instruction is stored in the memory, it is described
When instruction is executed by the processor, so that the processor executes the method as described in any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810404508.6A CN108881712B (en) | 2018-04-28 | 2018-04-28 | Image processing method, image processing device, computer-readable storage medium and electronic equipment |
| PCT/CN2019/080559 WO2019205889A1 (en) | 2018-04-28 | 2019-03-29 | Image processing method, apparatus, computer-readable storage medium, and electronic device |
| EP19792627.2A EP3644261B1 (en) | 2018-04-28 | 2019-03-29 | Image processing method, apparatus, computer-readable storage medium, and electronic device |
| US16/740,925 US11308636B2 (en) | 2018-04-28 | 2020-01-13 | Method, apparatus, and computer-readable storage medium for obtaining a target image |
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| CN201810404508.6A CN108881712B (en) | 2018-04-28 | 2018-04-28 | Image processing method, image processing device, computer-readable storage medium and electronic equipment |
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| WO2019205889A1 (en) * | 2018-04-28 | 2019-10-31 | Oppo广东移动通信有限公司 | Image processing method, apparatus, computer-readable storage medium, and electronic device |
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