CN106484113A - Screen Rouser and method - Google Patents
Screen Rouser and method Download PDFInfo
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- CN106484113A CN106484113A CN201610887737.9A CN201610887737A CN106484113A CN 106484113 A CN106484113 A CN 106484113A CN 201610887737 A CN201610887737 A CN 201610887737A CN 106484113 A CN106484113 A CN 106484113A
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- screen
- eyeball
- set image
- eyeball image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/013—Eye tracking input arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4418—Suspend and resume; Hibernate and awake
-
- 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
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
Abstract
The invention discloses a kind of screen Rouser and method, belong to field of mobile terminals.Described device includes：Acquisition module, for obtaining eyeball image, described eyeball image includes the image of the ball portions of human eye；Contrast module, for being contrasted described eyeball image with pre-set image, described pre-set image is the image of the ball portions that user shoots in advance；Drive module, for when the similarity of described eyeball image and described pre-set image is more than or equal to preset value, waking up screen；When the similarity of described eyeball image and pre-set image is less than preset value, do not wake up screen.The present invention is contrasted with pre-set image by gathering eyeball image, when similarity is more than or equal to preset value, realize screen to wake up, in the process without user's manual operation, solve the problems, such as that During manual operation is loaded down with trivial details, and because pre-set image is the eyeball image that user shoots in advance, therefore wake operation only user can complete, safe coefficient is high.
Description
Technical field
The present invention relates to field of mobile terminals, particularly to a kind of screen Rouser and method.
Background technology
With scientific and technological progress, the mobile terminal such as smart mobile phone, panel computer is increasingly becoming the necessary article of men and women, old and young.
In order to ensure that mobile terminal can efficiently reduce power consumption, existing mobile terminal in the case of not using, meeting
Enter resting state.Under resting state, the peripheral hardware of the mobile terminal such as major part such as display screen, touch screen is all closed.When user needs
During using mobile terminal, the manual manipulation modes such as button can be adopted to wake up mobile terminal.However, this wake-up mode must user
It is operated manually on mobile terminals, comparatively laborious, and can execute per capita because the manual manipulation modes such as button are any, safety
Property low (if mobile terminal do not need verify).
Content of the invention
Comparatively laborious in order to solve existing screen wake-up mode, and the low problem of safety, embodiments provide
A kind of screen Rouser and method.Described technical scheme is as follows：
In a first aspect, embodiments providing a kind of screen Rouser, described device includes：
Acquisition module, for obtaining eyeball image, described eyeball image includes the image of the ball portions of human eye；
Contrast module, for being contrasted described eyeball image with pre-set image, described pre-set image is that user is prior
The image of the ball portions shooting；
Drive module, for when the similarity of described eyeball image and described pre-set image is more than or equal to preset value,
Wake up screen；When the similarity of described eyeball image and pre-set image is less than preset value, do not wake up screen.
In a kind of implementation of the embodiment of the present invention, described pre-set image is to shoot when user's sight line is on screen
Eye image in the image of ball portions that extracts.
In another kind of implementation of the embodiment of the present invention, described pre-set image can include multiple, multiple default figures
As at least one of angle between the corresponding user's sight line of any two pre-set image and screen display face and distance no
Identical.
In another kind of implementation of the embodiment of the present invention, described contrast module, for by described eyeball image successively
Contrasted with multiple pre-set image described, until the similarity of described eyeball image and a pre-set image is more than or equal in advance
If value, or the contrast completing all pre-set image.
In another kind of implementation of the embodiment of the present invention, described preset value is 90%-95%.
In another kind of implementation of the embodiment of the present invention, described acquisition module, including:Photographic head and processor；
Described processor, whether there is human eye for determining according to the picture that described photographic head catches in current picture, when
When there is human eye in current picture, control described photographic head to shoot current picture and generate eye image, and from described eye image
Middle extraction eyeball image.
In another kind of implementation of the embodiment of the present invention, described acquisition module also includes touch sensor, described place
Reason device is additionally operable to obtain the signal that touch sensor produces；When getting the signal that described touch sensor produces, control institute
State photographic head work.
In another kind of implementation of the embodiment of the present invention, described contrast module, including：
Wave filter, the described eyeball image for getting to described acquisition module is filtered processing；
Comparison unit, for being contrasted the described eyeball image after processing after filtering with described pre-set image.
In another kind of implementation of the embodiment of the present invention, described comparison unit includes：
Memorizer, for storing pre-set image；
D/A converting circuit, for described pre-set image and after filtering process after described eyeball image carry out digital-to-analogue
Conversion, generates the first analogue signal and the second analogue signal respectively；
Contrast circuit, for carrying out differential amplification, output electricity by described first analogue signal and described second analogue signal
Pressure signal；
Process subelement, for described eyeball image and institute are determined according to the voltage signal size that described contrast circuit exports
State the similarity of pre-set image.
In another kind of implementation of the embodiment of the present invention, described drive module, for when described eyeball image with pre-
If the similarity of image is more than or equal to preset value, produce control signal, described control signal is used for indicating described screen point
Bright；
Described control signal is sent to the driver element of screen.
In another kind of implementation of the embodiment of the present invention, described eyeball image and described pre-set image are 3D figure
Picture.
Second aspect, the embodiment of the present invention additionally provides a kind of screen awakening method, and methods described includes：
Obtain eyeball image, described eyeball image includes the image of the ball portions of human eye；
Described eyeball image is contrasted with pre-set image, described pre-set image is the ball portions that user shoots in advance
Image；
When the similarity of described eyeball image and described pre-set image is more than or equal to preset value, wake up screen；Work as institute
When stating the similarity of eyeball image and pre-set image and being less than preset value, do not wake up screen.
In a kind of implementation of the embodiment of the present invention, described pre-set image is to shoot when user's sight line is on screen
Eye image in the image of ball portions that extracts.
In another kind of implementation of the embodiment of the present invention, described pre-set image can include multiple, multiple default figures
As at least one of angle between the corresponding user's sight line of any two pre-set image and screen display face and distance no
Identical.
In another kind of implementation of the embodiment of the present invention, described described eyeball image and pre-set image are carried out right
Than, including：
Described eyeball image is contrasted with multiple pre-set image described successively, until described eyeball image and one are pre-
If the similarity of image is more than or equal to preset value, or the contrast completing all pre-set image.
In another kind of implementation of the embodiment of the present invention, described preset value is 90%-95%.
In another kind of implementation of the embodiment of the present invention, described acquisition eyeball image, including：
Determined in current picture according to the picture that photographic head catches and whether there is human eye, when there is human eye in current picture
When, control described photographic head to shoot current picture and generate eye image, and extract eyeball image from described eye image.
In another kind of implementation of the embodiment of the present invention, described acquisition eyeball image, also include：
Obtain the signal that touch sensor produces；
When getting the signal that described touch sensor produces, control described photographic head work.
In another kind of implementation of the embodiment of the present invention, described described eyeball image and pre-set image are carried out right
Than, including：
The described eyeball image getting is filtered process；
Described eyeball image after processing after filtering is contrasted with described pre-set image.
In another kind of implementation of the embodiment of the present invention, described by the eyeball image after processing after filtering and default
Image is contrasted, including：
Described eyeball image after processing to described pre-set image and after filtering carries out digital-to-analogue conversion, generates first respectively
Analogue signal and the second analogue signal；
Described first analogue signal and described second analogue signal are carried out differential amplification, output voltage signal；
Determine the similarity of described eyeball image and described pre-set image according to the voltage signal size of output.
In another kind of implementation of the embodiment of the present invention, the described similarity when described eyeball image and pre-set image
During more than or equal to preset value, wake up screen, including：
When the similarity of described eyeball image and pre-set image is more than or equal to preset value, produce control signal, described
Control signal is used for indicating that described screen is lighted；
Described control signal is sent to the driver element of screen.
In another kind of implementation of the embodiment of the present invention, described eyeball image and pre-set image are 3D rendering.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
The present invention is contrasted with pre-set image by gathering eyeball image, when similarity is more than or equal to preset value,
Realize screen to wake up, in the process without user's manual operation, solve the problems, such as that During manual operation is loaded down with trivial details, and due to pre-
If image is the eyeball image that user shoots in advance, therefore wake operation only user can complete, and safe coefficient is high.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below
Accompanying drawing be briefly described it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation of screen Rouser provided in an embodiment of the present invention；
Fig. 2 is the structural representation of another kind screen Rouser provided in an embodiment of the present invention；
Fig. 3 A is the structural representation of comparison unit provided in an embodiment of the present invention；
Fig. 3 B is the circuit diagram of contrast circuit provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of screen awakening method provided in an embodiment of the present invention；
Fig. 5 is the flow chart of another kind screen awakening method provided in an embodiment of the present invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structural representation of screen Rouser provided in an embodiment of the present invention, referring to Fig. 1, this device bag
Include：
Acquisition module 101, for obtaining eyeball image, eyeball image includes the image of the ball portions of human eye.
Contrast module 102, for being contrasted eyeball image and pre-set image, pre-set image is that user shoots in advance
The image of ball portions.
Drive module 103, for when the similarity of eyeball image and pre-set image is more than or equal to preset value, waking up screen
Curtain；When the similarity of eyeball image and pre-set image is less than preset value, do not wake up screen.
The present invention is contrasted with pre-set image by gathering eyeball image, when similarity is more than or equal to preset value,
Realize screen to wake up, in the process without user's manual operation, solve the problems, such as that During manual operation is loaded down with trivial details, and due to pre-
If image is the eyeball image that user shoots in advance, therefore wake operation only user can complete, and safe coefficient is high.
Fig. 2 is the structural representation of another kind screen Rouser provided in an embodiment of the present invention, referring to Fig. 2, this device
Including：
Acquisition module 201, for obtaining eyeball image, eyeball image includes the image of the ball portions of human eye.
Contrast module 202, for being contrasted eyeball image and pre-set image, pre-set image is that user shoots in advance
The image of ball portions.
Drive module 203, for when the similarity of eyeball image and pre-set image is more than or equal to preset value, waking up screen
Curtain；When the similarity of eyeball image and pre-set image is less than preset value, do not wake up screen.
Eyeball image is usually the image of the intra part of people.Screen wakes up is compared using eyeball image, a side
Face, because people's eyeball includes the tissue such as iris, thus can be used as the authentication of user using eyeball image, the opposing party
Face, when using mobile terminal, sight line generally aligns the screen of mobile terminal to user, therefore adopts eyeball image, can also be right
Whether user's sight line is verified on screen.
When realizing, pre-set image can be shot when user's sight line is on screen, thus meeting the checking to user's sight line.
Specifically, pre-set image is the figure of the ball portions extracting in the eye image shooting screen when from user's sight line
Picture.So can ensure that only user, when dig-inning screen, wakes up to screen, it is to avoid the sight line of user not in screen,
Light screen.
Further, pre-set image can include multiple, the corresponding use of any two pre-set image in multiple pre-set image
At least one of angle between family sight line and screen display face and distance differ.
When user is when with different angles or distance viewing screen, user eyeball can produce and change the use so that photographing
Family eyeball image has differences, in order that user can wake up screen under different viewing distances and angle, needs storage different
Angle and the pre-set image of distance.When realizing, acquisition module 201 can automatically snap pre-set image in user's daily life.
For example, acquisition module 201 is used for, when user wakes up manually or unlocks mobile terminal, shooting user's eye and obtaining default figure
Piece；Acquisition module 201 passes through multiple shooting, obtains the pre-set image of different angles and distance.Certainly, the shooting of pre-set image
Can be manually completed by user, such as user can first fix eyeball to screen apart from size, then converts different angles
Shot, then gradually adjustable range size again, completed the shooting of the pre-set image of different angles and distance.For example, will clap
Photographic range is divided into 10cm, 20cm, 30cm and 50cm, first in the case of 10cm, respectively according to eyes just to screen, eyes from top
See screen (as sight line and screen angle at 45 °) to oblique and eyes are upward from below sees that three kinds of angles of screen are shot, so
Other distances shoot according to the same manner afterwards, obtain 12 pre-set image.Certainly, in embodiments of the present invention it is also possible to arrange
More distances and angle carry out the shooting of pre-set image it is also possible to each distance and angle shot plurality of pictures.
When being contrasted, contrast module 202 is used for being contrasted eyeball image successively with multiple pre-set image, until
The similarity of eyeball image and a pre-set image is more than or equal to preset value, or the contrast completing all pre-set image.
In embodiments of the present invention, preset value can be 90%-95%.Preset value is set to 90%-95% it is ensured that only
There is user could wake up screen.
In embodiments of the present invention, acquisition module 201 can include：Photographic head 2011 and processor 2012；
Processor 2012, whether there is human eye for determining according to the picture that photographic head 2011 catches in current picture, when
When there is human eye in current picture, control photographic head 2011 to shoot current picture and generate eye image, and carry from eye image
Take eyeball image.Photographic head is controlled to be shot when capturing human eye by processor, it is to avoid shooting image is excessive.
When realizing, then processor 2012 can be adopted with obtaining multiple area images from eye image using traversal mode
Successively multiple area images being classified with grader, so that it is determined that going out the area image including eyeball, and then determining eye
The approximate location of ball, finally extracts eyeball image using edge extraction techniques from eye image.Certainly above-mentioned eyeball image
Extracting mode is only for example, and the embodiment of the present invention can also carry out the extraction of eyeball image using other modes, does not do superfluous here
State.
Wherein, photographic head 2011 can be the front-facing camera of mobile terminal, and photographic head 2011 and processor 2012 combine,
Realize tracking and the detection of human eye, its trace detection scope is 110 °, namely the shooting angle of photographic head can reach 110 °, from
And more easily photograph human eye.
Wherein, processor 2012 can be MCU (English：Microcontroller Unit, Chinese：Micro-control unit).
Further, acquisition module can also include touch sensor 2013, and processor is additionally operable to obtain touch sensor
The signal of 2013 generations；When getting the signal of touch sensor 2013 generation, photographic head 2011 is controlled to work.When people uses
When just carry out picture photographing, save power consumption.
In embodiments of the present invention, contrast module 202 can include：
Wave filter 2021, the eyeball image for getting to acquisition module is filtered processing；Comparison unit 2022, uses
In by after filtering process after eyeball image contrasted with pre-set image.
It is limited to noise and other factorses impact, doped with redundant signals in the eyeball image that acquisition module 201 gets.
In order to obtain more accurately eyeball information, the signal that acquisition module 201 need to be collected is filtered processing, therefore need to use filter
Ripple device.Wave filter generally comprises two ports, an input port and an output port, and eyeball signal (eyeball image) is led to
Cross input port input, obtain after filtering exporting the signal of a characteristic frequency.Wherein, wave filter can be bandpass filtering
Device, for filtering low frequency and high-frequency noise first, is then carried out the signal after processing according to the frequency band of lossless eyeball signal
Filter, only allow the signal of this frequency band to pass through, and the signal of remaining frequency is suppressed by larger, the letter of final output
Number for the doping less eyeball signal of noise, to improve subsequent contrast's precision.In addition, when being filtered, can be first by eyeball
Image is converted to binary signal, is then filtered again.
Referring to Fig. 3 A, comparison unit 2022 can include：
Memorizer 2221, for storing pre-set image.D/A converting circuit 2222, for pre-set image and after filtering
Eyeball image after process carries out digital-to-analogue conversion, generates the first analogue signal and the second analogue signal respectively.Contrast circuit 2223,
For the first analogue signal and the second analogue signal are carried out differential amplification, output voltage signal.Process subelement 2224, be used for
Determine the similarity of eyeball image and pre-set image according to the voltage signal size of contrast circuit output.Comparison unit 2022 is passed through
Differential amplification realizes signal contrast, determines similarity according to the voltage signal of contrast output, implementation is simple.
Wherein, the digital signal (pre-set image, eyeball image) inputting is converted into simulation letter by D/A converting circuit 2222
Number.In order to improve the precision of the analogue signal of output, high-precision D/A converting circuit can be chosen.For piece image
Speech, it includes the multiple pixels by ranks distribution, and each pixel is represented using tetrad.Carrying out digital-to-analogue conversion
When, process subelement 2224 read pre-set image or eyeball image obtain binary signal (can be according to line by line from left to right
Order is carried out), then binary signal is input in D/A converting circuit 2222.Wherein, process subelement 2224 obtaining
After the binary signal of eyeball image, can also first export in wave filter 2021 and be filtered, after filtering, be input to digital-to-analogue again
In change-over circuit 2222.Binary signal is converted to magnitude of voltage by D/A converting circuit 2222, thus obtaining the corresponding mould of image
Intend signal.
Memorizer 2221 can include EEPROM (English：Electrically Erasable Programmable
Read-Only Memory, Chinese：EEPROM), for storing pre-set image.Memorizer 2221 also may be used
To include latch, latch is used for entering row cache to eyeball image before carrying out signal contrast.
Contrast circuit 2223 can be two-stage open loop comparator, thus realizing high accuracy, the comparison of low latency.
Specifically, referring to Fig. 3 B, contrast circuit 2223 includes 7 MOS of M1～M7 (English：Metal Oxide
Semiconductor, Chinese：Metal-oxide semiconductor (MOS)) pipe, wherein M1, M2, M5 and M7 is N-type metal-oxide-semiconductor, and M3, M4 and M6 are
P-type metal-oxide-semiconductor.As illustrated, the grid of metal-oxide-semiconductor M1 is connected with first input end Vin-, the source electrode of M1 is connected with the source electrode of M2, M1
Drain electrode be connected with the drain electrode of M3；The grid of M2 is connected with the second input Vin+, and the drain electrode of M2 is connected with the drain electrode of M4；M3's
Grid is connected with the grid of M4, and the grid of M3 is also connected with the drain electrode of M3, and the source electrode of M3 is connected with the source electrode of M4；The grid of M5 with
Biased electrical pressure side Vbias connects, and the source electrode of M5 is connected with the source electrode of M7, and the drain electrode of M5 is connected with the source electrode of M1；The grid of M6 with
The drain electrode of M4 connects, and the source electrode of M6 is connected with the source electrode of M4, and the drain electrode of M6 is connected with output end vo ut；The grid of M7 and biased electrical
Pressure side Vbias connects, and the drain electrode of M7 is connected with output end vo ut.The source electrode of M3 connects power supply Vdd, and the source electrode of M5 connects power supply
Vss.Wherein, the first analogue signal and the second analogue signal pass through first input end and the second input input contrast circuit respectively
2223.
Wherein, process subelement 2224 to realize using MCU, can be same MCU with aforementioned processor 2012.
In embodiments of the present invention, drive module 203 specifically can be used for when the similarity of eyeball image and pre-set image
During more than or equal to preset value, produce control signal, control signal is used for indicating that screen is lighted；Send control signals to screen
Driver element.By control signal, control screen driver element, realize screen and wake up.
In embodiments of the present invention, eyeball image and pre-set image can be all 3D rendering.Using 3D rendering, improve contrast
Precision.
Further, after completing screen wake-up, mobile terminal can be unlocked process.Certainly in a kind of implementation
In it is also possible to complete screen and waking up directly to unlock mobile terminal, do not execute extra releasing process.
The present invention is contrasted with pre-set image by gathering eyeball image, when similarity is more than or equal to preset value,
Realize screen to wake up, in the process without user's manual operation, solve the problems, such as that During manual operation is loaded down with trivial details, and due to pre-
If image is the eyeball image that user shoots in advance, therefore wake operation only user can complete, and safe coefficient is high.
Fig. 4 is a kind of flow chart of screen awakening method provided in an embodiment of the present invention, and referring to Fig. 4, the method includes：
Step 301：Obtain eyeball image, eyeball image includes the image of the ball portions of human eye.
Step 302：Eyeball image and pre-set image are contrasted, pre-set image is the ball portions that user shoots in advance
Image.
Step 303：When the similarity of eyeball image and pre-set image is more than or equal to preset value, wake up screen；Work as eye
When the similarity of ball image and pre-set image is less than preset value, do not wake up screen.
The present invention is contrasted with pre-set image by gathering eyeball image, when similarity is more than or equal to preset value,
Realize screen to wake up, in the process without user's manual operation, solve the problems, such as that During manual operation is loaded down with trivial details, and due to pre-
If image is the eyeball image that user shoots in advance, therefore wake operation only user can complete, and safe coefficient is high.
Fig. 5 is the flow chart of another kind screen awakening method provided in an embodiment of the present invention, and referring to Fig. 5, the method includes：
Step 401：Determined according to the picture that photographic head catches and in current picture, whether there is human eye.
Before step 401, the method can also include：Obtain the signal that touch sensor produces；Getting touch
During the signal that sensor produces, control photographic head work, to catch picture.Just carry out picture photographing when people uses, save work(
Consumption.
Step 402：When there is human eye in current picture, controlling photographic head to shoot current picture and generating eye image, and
Eyeball image is extracted from eye image.
Step 401 and step 402 control photographic head to be shot when capturing human eye by processor, it is to avoid shooting figure
As excessive.
Step 403：The eyeball image getting is filtered process.
By denoising is carried out to eyeball image, to obtain the most real eyeball image, improve subsequent contrast's precision.
Step 404：Eyeball image after processing after filtering is contrasted with pre-set image.
Wherein, pre-set image is the ball portions extracting in the eye image shooting screen when from user's sight line
Image.So can ensure that only user, when dig-inning screen, wakes up to screen, it is to avoid the sight line of user is not in screen
When, light screen.
Further, pre-set image can include multiple, the corresponding use of any two pre-set image in multiple pre-set image
At least one of angle between family sight line and screen display face and distance differ.
When realizing, step 404 can include：Eyeball image and pre-set image are contrasted, including：
Eyeball image is contrasted with multiple pre-set image successively, until eyeball image is similar to a pre-set image
Degree is more than or equal to preset value, or the contrast completing all pre-set image.
Wherein, eyeball image and the comparison process of each pre-set image can include：
The first step, the eyeball image after processing to pre-set image and after filtering carries out digital-to-analogue conversion, generates first respectively
Analogue signal and the second analogue signal.
Second step, the first analogue signal and the second analogue signal are carried out differential amplification, output voltage signal.
3rd step, determines the similarity of eyeball image and pre-set image according to the voltage signal size of output.
In the third step, the voltage signal size of output can with the corresponding relation of eyeball image and the similarity of pre-set image
To be previously set, after determining output voltage signal size, eyeball image and default figure be can determine that according to this corresponding relation
The similarity of picture.
Above-mentioned steps realize signal contrast by differential amplification, determine similarity according to the voltage signal of contrast output, real
Existing mode is simple.
Step 405：When the similarity of eyeball image and pre-set image is more than or equal to preset value, wake up screen；Work as eye
When the similarity of ball image and pre-set image is less than preset value, do not wake up screen.
In embodiments of the present invention, preset value can be 90%-95%.Preset value is set to 90%-95% it is ensured that only having
User could wake up screen.
When realizing, step 405 can include：
When the similarity of eyeball image and pre-set image is more than or equal to preset value, produce control signal, control signal
For indicating that screen lights；Send control signals to the driver element of screen.By control signal, control screen drives single
Unit, realizes screen and wakes up.
In embodiments of the present invention, eyeball image and pre-set image can be all 3D rendering.Using 3D rendering, improve contrast
Precision.
The present invention is contrasted with pre-set image by gathering eyeball image, when similarity is more than or equal to preset value,
Realize screen to wake up, in the process without user's manual operation, solve the problems, such as that During manual operation is loaded down with trivial details, and due to pre-
If image is the eyeball image that user shoots in advance, therefore wake operation only user can complete, and safe coefficient is high.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can pass through hardware
To complete it is also possible to the hardware being instructed correlation by program is completed, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read only memory, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of screen Rouser is it is characterised in that described device includes：
Acquisition module, for obtaining eyeball image, described eyeball image includes the image of the ball portions of human eye；
Contrast module, for being contrasted described eyeball image with pre-set image, described pre-set image shoots in advance for user
Ball portions image；
Drive module, for when the similarity of described eyeball image and described pre-set image is more than or equal to preset value, waking up
Screen；When the similarity of described eyeball image and pre-set image is less than preset value, do not wake up screen.
2. device according to claim 1 is it is characterised in that described pre-set image is to clap when user's sight line is on screen
The image of the ball portions extracting in the eye image taken the photograph.
3. it is characterised in that described pre-set image can include multiple, multiple preset figure to device according to claim 2
As at least one of angle between the corresponding user's sight line of any two pre-set image and screen display face and distance no
Identical.
4. device according to claim 3 is it is characterised in that described contrast module, for by described eyeball image successively
Contrasted with multiple pre-set image described, until the similarity of described eyeball image and a pre-set image is more than or equal in advance
If value, or the contrast completing all pre-set image.
5. the device according to any one of Claims 1-4 is it is characterised in that described acquisition module, including：Photographic head and
Processor；
Described processor, whether there is human eye for determining in current picture according to the picture that described photographic head catches, when current
When there is human eye in picture, control described photographic head to shoot current picture and generate eye image, and carry from described eye image
Take eyeball image.
6. a kind of screen awakening method is it is characterised in that methods described includes：
Obtain eyeball image, described eyeball image includes the image of the ball portions of human eye；
Described eyeball image is contrasted with pre-set image, described pre-set image is the figure of the ball portions that user shoots in advance
Picture；
When the similarity of described eyeball image and described pre-set image is more than or equal to preset value, wake up screen；When described eye
When the similarity of ball image and pre-set image is less than preset value, do not wake up screen.
7. method according to claim 6 is it is characterised in that described pre-set image is to clap when user's sight line is on screen
The image of the ball portions extracting in the eye image taken the photograph.
8. it is characterised in that described pre-set image can include multiple, multiple preset figure to method according to claim 7
As at least one of angle between the corresponding user's sight line of any two pre-set image and screen display face and distance no
Identical.
9. method according to claim 8 it is characterised in that described described eyeball image and pre-set image are carried out right
Than, including：
Described eyeball image is contrasted with multiple pre-set image described successively, until described eyeball image and a default figure
The similarity of picture is more than or equal to preset value, or the contrast completing all pre-set image.
10. the method according to any one of claim 6 to 9 is it is characterised in that described acquisition eyeball image, including：
Determined in current picture according to the picture that photographic head catches and whether there is human eye, when there is human eye in current picture, control
Make described photographic head and shoot current picture generation eye image, and extract eyeball image from described eye image.
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