CN107292219A - The method and electronic equipment of a kind of driving eye motion - Google Patents
The method and electronic equipment of a kind of driving eye motion Download PDFInfo
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- CN107292219A CN107292219A CN201610203050.9A CN201610203050A CN107292219A CN 107292219 A CN107292219 A CN 107292219A CN 201610203050 A CN201610203050 A CN 201610203050A CN 107292219 A CN107292219 A CN 107292219A
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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
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/193—Preprocessing; Feature extraction
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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
- G06V40/18—Eye characteristics, e.g. of the iris
Abstract
The invention discloses a kind of method of driving eye motion and electronic equipment, methods described includes：Obtain the characteristic point of face eyes；The face eyes are fitted according to default eye model, fitting result is obtained；Linear Amplifer is carried out to the fitting result, result is amplified；Eyes in being expressed one's feelings according to the amplification result to target are driven, this method causes obtained result to have higher stability by larger fitting parameter, improve the anti-interference of result, cause final result that there is higher precision again by carrying out Linear Amplifer to fitting result, detected simultaneously by closing one's eyes, it is ensured that the correctness of eyes open and-shut mode.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of method and electronics for driving eye motion is set
It is standby.
Background technology
During recognition of face or expression migration, be to the identification and fitting of eyes it is very crucial,
In the prior art, generally there is error greatly in the fitting to eyes, easily be disturbed, eye opening closed-eye state judges not
Accurate the problem of.
The content of the invention
In order to solve the above problems, the invention provides a kind of method of driving eye motion and electronic equipment.
The technical scheme is as follows：
First aspect includes there is provided a kind of method for driving eye motion, methods described：
Obtain the characteristic point of face eyes；
The face eyes are fitted according to default eye model, fitting result is obtained；
Linear Amplifer is carried out to the fitting result, result is amplified；
Eyes in being expressed one's feelings according to the amplification result to target are driven.
It is described according to default eye model pair with reference in a first aspect, in the first possible implementation
The face eyes are fitted, and obtaining fitting result includes：
Ridge regression is carried out according to default formula and default eye model to the characteristic point of the face eyes to estimate
Meter；
The fitting result is obtained according to the ride regression estimater.
With reference to the first possible implementation of first aspect, in second of possible implementation, institute
The span for stating the parameter of ridge regression is：[0.01,0.5].
It is possible at the third with reference to second of any possible implementation of first aspect to first aspect
In implementation, it is described according to it is described amplification result to target express one's feelings in eyes be driven before, institute
Stating method also includes：
Eye closing detection is carried out to the amplification result, if testing result changes the face eye to close one's eyes
The state of eyeball is closed-eye state.
Second aspect is there is provided a kind of electronic equipment, and the electronic equipment includes：
Acquisition module, the characteristic point for obtaining face eyes；
Fitting module, for being fitted according to default eye model to the face eyes, obtains fitting
As a result；
Amplification module, for carrying out Linear Amplifer to the fitting result, is amplified result；
Drive module, is driven for the eyes in being expressed one's feelings according to the amplification result to target.
With reference to second aspect, in the first possible implementation, the fitting module specifically for：
Ridge regression is carried out according to default formula and default eye model to the characteristic point of the face eyes to estimate
Meter；
The fitting result is obtained according to the ride regression estimater.
With reference to the first possible implementation of second aspect, in second of possible implementation, institute
The span for stating the parameter of ridge regression is：[0.01,0.5].
It is possible at the third with reference to second of any possible implementation of second aspect to second aspect
In implementation, the electronic equipment also includes eye closing detection module, is used for：The amplification result is carried out
Close one's eyes and detect, if testing result is closes one's eyes, the state for changing the face eyes is closed-eye state.
The third aspect there is provided a kind of electronic equipment, the equipment include memory, and with the storage
The processor of device connection, wherein, the memory is used to store batch processing code, and the processor is called
The program code that the memory is stored is used to perform following operation：
Obtain the characteristic point of face eyes；
The face eyes are fitted according to default eye model, fitting result is obtained；
Linear Amplifer is carried out to the fitting result, result is amplified；
Eyes in being expressed one's feelings according to the amplification result to target are driven.
With reference to the third aspect, in the first possible implementation, the processor calls the memory
The program code stored is used to perform following operation：
Ridge regression is carried out according to default formula and default eye model to the characteristic point of the face eyes to estimate
Meter；
The fitting result is obtained according to the ride regression estimater.
With reference to the first possible implementation of the third aspect, in second of possible implementation, institute
The span for stating the parameter of ridge regression is：[0.01,0.5].
It is possible at the third with reference to second of any possible implementation of the third aspect to the third aspect
In implementation, the program code that the processor calls the memory to be stored is used to perform following operation：
Eye closing detection is carried out to the amplification result, if testing result changes the face eye to close one's eyes
The state of eyeball is closed-eye state.
The embodiments of the invention provide a kind of method of driving eye motion and electronic equipment, pass through larger plan
Closing parameter causes obtained result to have higher stability, the anti-interference of result is improved, by intending
Closing result progress Linear Amplifer causes final result to have higher precision again, while being detected by closing one's eyes, protects
The correctness of eyes open and-shut mode is demonstrate,proved.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, institute in being described below to embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of the method for driving eye motion provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the method for driving eye motion provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the method for driving eye motion provided in an embodiment of the present invention；
Fig. 4 is the structural representation of a kind of electronic equipment provided in an embodiment of the present invention；
Fig. 5 is the structural representation of a kind of electronic equipment provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.
The embodiments of the invention provide a kind of method for driving eye motion, this method can be by running electricity
What the application program in sub- equipment was realized, the electronic equipment can be smart mobile phone, tablet personal computer and other electricity
Any one in sub- equipment, the embodiment of the present invention is not limited to specific electronic equipment.
Embodiment one
The embodiments of the invention provide a kind of method for driving eye motion, shown in reference picture 1, method flow
Including：
102nd, the characteristic point of face eyes is obtained.
Specifically, the process can include：
Face eyes are identified from frame of video；
Extract the characteristic point of the face eyes.
It is pointed out that the frame of video can in real time be gathered by imaging first-class recording apparatus,
It can be read from video file, the embodiment of the present invention is not limited to the acquisition modes of frame of video.
104th, the face eyes are fitted according to default eye model, obtain fitting result.
Specifically, the process can be：
The characteristic point of the face eyes is fitted according to default formula and default eye model, obtained
Take fitting result.
Wherein, the default eye model can be one group of multiple eye model pre-set, to institute
Linear fit can be used by stating when face eyes are fitted, it would however also be possible to employ nonlinear fitting, and the present invention is real
Example is applied not to be limited specific approximating method.
106th, Linear Amplifer is carried out to the fitting result, is amplified result.
Specifically, the process can be：
Linear Amplifer is carried out to the fitting result according to default linear function, result is amplified.
108th, the eyes in being expressed one's feelings according to the amplification result to target are driven.
Specifically, the process can be：
According to amplification result in face eyes characteristic point position, driving target expression in eyes to it is described
Amplify the position corresponding of the characteristic point of face eyes in result.
It is linear by being carried out to fitting result the embodiments of the invention provide a kind of method for driving eye motion
Amplification causes final result to have higher precision.
Embodiment two
The embodiments of the invention provide a kind of method for driving eye motion, shown in reference picture 2, method flow
Including：
202nd, the characteristic point of face eyes is obtained.
Specifically, the process can include：
Face eyes are identified from frame of video；
Extract the characteristic point of the face eyes.
It is pointed out that the frame of video can in real time be gathered by imaging first-class recording apparatus,
It can be read from video file, the embodiment of the present invention is not limited to the acquisition modes of frame of video.
204th, the face eyes are fitted according to default eye model, obtain fitting result.
Specifically, using the characteristic point of the face eyes as dependent variable Y, using the default eye model as certainly
The formula of the linear regression of variable X is：
Y=aX+b (1)
Wherein, a and b are the parameters of linear regression.
Formula (2) can be derived according to formula (1)：
Y-b XT=aXXT (2)
According to formula (2) and ridge regression algorithm, formula (3) can be derived：
A=Y-b XT×XXT+ λI -1 (3)
Wherein, I is unit matrix, and λ is ridge regression parameter.
It can be calculated according to the characteristic point of the face eyes and the default eye model and formula (3)
Go out a and b estimated value a' and b', can calculate and obtain according to a' and b' and the default eye model X
Y'=a'X+b', wherein Y' are the fitting result, and Y' is the estimation to Y.
Exemplary, when the quantity of the characteristic point of the face eyes is 6, the default eye model
For 8 when, Y, a and b are 12 dimensional vectors, and X is the matrixes of 12 × 8 dimensions.
It is pointed out that in order to obtain higher stability, a larger ridge regression parameter λ can be taken,
Exemplary, λ ∈ [0.01,0.5], it is preferred that λ=0.1, the span of the ridge regression parameter is only example,
The embodiment of the present invention is not limited to specific ridge regression parameter scope.
206th, Linear Amplifer is carried out to the fitting result, is amplified result.
Specifically, the process can be：
Linear Amplifer is carried out to the fitting result according to default linear function, result is amplified.
The linear function can be：
F (x)=cx+d (4)
Wherein c, d are amplification coefficients, can be set according to actual conditions, by what is obtained in step 204
Fitting result Y' substitutes into formula (4), can be amplified result Y "=cY'+d, it is preferred that amplification coefficient c
Value be 1.1, amplification coefficient d value is 0.1.
It is pointed out that the linear function is only example, it is also an option that other functions are amplified,
The embodiment of the present invention is not limited to specific magnification function, and the value of the amplification coefficient is also only example,
Amplification coefficient is also an option that other values, the embodiment of the present invention to specific amplification coefficient without limitation.
208th, the eyes in being expressed one's feelings according to the amplification result to target are driven.
Specifically, the process can be：
According to amplification result in face eyes characteristic point position, driving target expression in eyes to it is described
Amplify the position corresponding of the characteristic point of face eyes in result.
The embodiments of the invention provide a kind of method for driving eye motion, caused by larger fitting parameter
Obtained result has higher stability, the anti-interference of result is improved, by being carried out to fitting result
Linear Amplifer causes final result to have higher precision again.
Embodiment three
The embodiments of the invention provide a kind of method for driving eye motion, shown in reference picture 3, method flow
Including：
302nd, the characteristic point of face eyes is obtained.
Specifically, the process can include：
Face eyes are identified from frame of video；
Extract the characteristic point of the face eyes.
It is pointed out that the frame of video can in real time be gathered by imaging first-class recording apparatus,
It can be read from video file, the embodiment of the present invention is not limited to the acquisition modes of frame of video.
304th, the face eyes are fitted according to default eye model, obtain fitting result.
Specifically, using the characteristic point of the face eyes as dependent variable Y, using the default eye model as certainly
The formula of the linear regression of variable X is：
Y=aX+b (1)
Wherein, a and b are the parameters of linear regression.
Formula (2) can be derived according to formula (1)：
Y-b XT=aXXT (2)
According to formula (2) and ridge regression algorithm, formula (3) can be derived：
A=Y-b XT×XXT+λI-1 (3)
Wherein, I is unit matrix, and λ is ridge regression parameter.
It can be calculated according to the characteristic point of the face eyes and the default eye model and formula (3)
Go out a and b estimated value a' and b', can calculate and obtain according to a' and b' and the default eye model X
Y'=a'X+b', wherein Y' are the fitting result, and Y' is the estimation to Y.
Exemplary, when the quantity of the characteristic point of the face eyes is 6, the default eye model
For 10 when, Y, a and b are 12 dimensional vectors, and X is the matrixes of 12 × 10 dimensions.
It is pointed out that in order to obtain higher stability, a larger ridge regression parameter λ can be taken,
Exemplary, λ ∈ [0.01,0.5], it is preferred that λ=0.2, the span of the ridge regression parameter is only example,
The embodiment of the present invention is not limited to specific ridge regression parameter scope.
306th, Linear Amplifer is carried out to the fitting result, is amplified result.
Specifically, the process can be：
Linear Amplifer is carried out to the fitting result according to default linear function, result is amplified.
The linear function can be：
F (x)=cx+d (4)
Wherein c, d are amplification coefficients, can be set according to actual conditions, by what is obtained in step 304
Fitting result Y' substitutes into formula (4), can be amplified result Y "=cY'+d, it is preferred that amplification coefficient c
Value be 1.05, amplification coefficient d value is 0.15.
It is pointed out that the linear function is only example, it is also an option that other functions are amplified,
The embodiment of the present invention is not limited to specific magnification function, and the value of the amplification coefficient is also only example,
Amplification coefficient is also an option that other values, the embodiment of the present invention to specific amplification coefficient without limitation.
308th, eye closing detection is carried out to the amplification result, if testing result changes the people to close one's eyes
The state of face eyes is closed-eye state.
Specifically, the process can be：
Judge that the position for amplifying the corresponding characteristic point in upper eyelid in result is corresponding with corresponding palpebra inferior
Whether the distance between position of characteristic point is less than predetermined threshold value, if less than the predetermined threshold value, then judges institute
It is closed-eye state to state the corresponding face eyes of amplification result, and the state for changing the face eyes is closed-eye state；
Otherwise, judge the position for amplifying the corresponding characteristic point in upper eyelid in result whether less than corresponding
The position of the corresponding characteristic point of palpebra inferior, if it is, judge the corresponding face eyes of the amplification result as
Closed-eye state, the state for changing the face eyes is closed-eye state.
310th, the eyes in being expressed one's feelings according to the amplification result to target are driven.
Specifically, the process can be：
If the state of the face eyes is closed-eye state, the eyes in modification target expression are eye closing shape
State；Otherwise,
According to amplification result in face eyes characteristic point position, driving target expression in eyes to it is described
Amplify the position corresponding of the characteristic point of face eyes in result.
The embodiments of the invention provide a kind of method for driving eye motion, caused by larger fitting parameter
Obtained result has higher stability, the anti-interference of result is improved, by being carried out to fitting result
Linear Amplifer causes final result to have higher precision again.
Example IV
The embodiments of the invention provide a kind of electronic equipment, shown in reference picture 4, the electronic equipment includes：
Acquisition module 401, the characteristic point for obtaining face eyes；
Fitting module 402, for being fitted according to default eye model to the face eyes, obtains and intends
Close result；
Amplification module 403, for carrying out Linear Amplifer to the fitting result, is amplified result；
Drive module 404, is driven for the eyes in being expressed one's feelings according to the amplification result to target.
Optionally, fitting module 402 specifically for：
Ridge regression is carried out according to default formula and default eye model to the characteristic point of the face eyes to estimate
Meter；
The fitting result is obtained according to the ride regression estimater.
Wherein, the span of the parameter of the ridge regression is：[0.01,0.5].
Optionally, the electronic equipment also includes eye closing detection module 405, is used for：The amplification result is entered
Row, which is closed one's eyes, to be detected, if testing result is closes one's eyes, the state for changing the face eyes is closed-eye state.
The embodiments of the invention provide a kind of electronic equipment, the result for obtain by larger fitting parameter
With higher stability, the anti-interference of result is improved, is made by carrying out Linear Amplifer to fitting result
Obtain final result has higher precision again.
Embodiment five
The embodiments of the invention provide a kind of electronic equipment, shown in reference picture 5, the electronic equipment includes storage
Device 501 and the processor 502 being connected with memory 501, wherein, memory 501 is used to store one group of journey
Sequence code, the program code that processor 502 calls memory 501 to be stored is used to perform following operation：
Obtain the characteristic point of face eyes；
The face eyes are fitted according to default eye model, fitting result is obtained；
Linear Amplifer is carried out to the fitting result, result is amplified；
Eyes in being expressed one's feelings according to the amplification result to target are driven.
Optionally, the program code that processor 502 calls memory 501 to be stored is used to perform following operation：
Ridge regression is carried out according to default formula and default eye model to the characteristic point of the face eyes to estimate
Meter；
The fitting result is obtained according to the ride regression estimater.
Wherein, the span of the parameter of the ridge regression is：[0.01,0.5].
Optionally, the program code that processor 502 calls memory 501 to be stored is used to perform following operation：
Eye closing detection is carried out to the amplification result, if testing result changes the face eye to close one's eyes
The state of eyeball is closed-eye state.
The embodiments of the invention provide a kind of electronic equipment, the result for obtain by larger fitting parameter
With higher stability, the anti-interference of result is improved, is made by carrying out Linear Amplifer to fitting result
Obtain final result has higher precision again, is detected while passing through and closing one's eyes, it is ensured that eyes open and-shut mode is just
True property.
It the above is only presently preferred embodiments of the present invention, any formal limitation not made to the present invention,
Although the present invention is disclosed as above with preferred embodiment, but is not limited to the present invention, this area is common
Technical staff without departing from the scope of the present invention, makes when using the technology contents of the disclosure above
A little change is modified to the equivalent embodiments of equivalent variations, as long as be without departing from technical solution of the present invention content,
Any simple modification, equivalent variations and modification that technical spirit according to the present invention is made to above example,
In the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of method for driving eye motion, it is characterised in that methods described includes：
Obtain the characteristic point of face eyes；
The face eyes are fitted according to default eye model, fitting result is obtained；
Linear Amplifer is carried out to the fitting result, result is amplified；
Eyes in being expressed one's feelings according to the amplification result to target are driven.
2. according to the method described in claim 1, it is characterised in that described according to default eye model pair
The face eyes are fitted, and obtaining fitting result includes：
Ridge regression is carried out according to default formula and default eye model to the characteristic point of the face eyes to estimate
Meter；
The fitting result is obtained according to the ride regression estimater.
3. method according to claim 2, it is characterised in that the span of the parameter of the ridge regression
For：[0.01,0.5].
4. the method according to claims 1 to 3 any one, it is characterised in that described according to institute
State amplification result to target express one's feelings in eyes be driven before, methods described also includes：
Eye closing detection is carried out to the amplification result, if testing result changes the face eye to close one's eyes
The state of eyeball is closed-eye state.
5. a kind of electronic equipment, it is characterised in that the electronic equipment includes：
Acquisition module, the characteristic point for obtaining face eyes；
Fitting module, for being fitted according to default eye model to the face eyes, obtains fitting
As a result；
Amplification module, for carrying out Linear Amplifer to the fitting result, is amplified result；
Drive module, is driven for the eyes in being expressed one's feelings according to the amplification result to target.
6. electronic equipment according to claim 5, it is characterised in that the fitting module specifically for：
Ridge regression is carried out according to default formula and default eye model to the characteristic point of the face eyes to estimate
Meter；
The fitting result is obtained according to the ride regression estimater.
7. equipment according to claim 6, it is characterised in that the span of the parameter of the ridge regression
For：[0.01,0.5].
8. the electronic equipment according to claim 5 to 7 any one, it is characterised in that the electronics
Equipment also includes eye closing detection module, is used for：Eye closing detection is carried out to the amplification result, if detection knot
Fruit is closes one's eyes, then the state for changing the face eyes is closed-eye state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610203050.9A CN107292219A (en) | 2016-04-01 | 2016-04-01 | The method and electronic equipment of a kind of driving eye motion |
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| CN201610203050.9A CN107292219A (en) | 2016-04-01 | 2016-04-01 | The method and electronic equipment of a kind of driving eye motion |
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Citations (5)
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