CN107621867A - Put out screen control method, device and terminal device - Google Patents
Put out screen control method, device and terminal device Download PDFInfo
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- CN107621867A CN107621867A CN201710677057.9A CN201710677057A CN107621867A CN 107621867 A CN107621867 A CN 107621867A CN 201710677057 A CN201710677057 A CN 201710677057A CN 107621867 A CN107621867 A CN 107621867A
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Abstract
Putting out screen control method, device and terminal device, method the invention discloses one kind includes：Three-dimensional head portrait model based on structure photogenerated user；The head portrait characteristic information of user is extracted from three-dimensional head portrait model；According to the head portrait characteristic information of user judge user face whether screen-oriented；If the non-screen-oriented of face of user, control screen put out screen.The embodiment of the present invention puts out screen control method, device and terminal device, three-dimensional head portrait model based on structure photogenerated user, and the head portrait characteristic information of user is extracted from three-dimensional head portrait model, then according to the head portrait characteristic information of user judge user face whether screen-oriented, if the non-screen-oriented of face of user, control screen put out screen, application is wider, it can make and more accurately put out screen control, save electricity, improve user experience.
Description
Technical field
The present invention relates to technical field of information processing, more particularly to one kind to put out screen control method, device and terminal device.
Background technology
With the high speed development of Internet technology, mobile phone has become one of instrument essential in people's life.With
Greatly increasing for mobile phone usage time, function constantly increases, and how to allow mobile phone more to save electricity, it has also become all manufacturers
The problem of concern.At present, when user calls, user face and mobile phone can be detected by the proximity transducer in mobile phone
Distance, whether face is judged close to mobile phone with this, if close to mobile phone, control mobile phone screen extinguishes so that user is dialling
When making a phone call, mobile phone electricity can be saved.However, this method can be only applied in call scene, application is small, and
Proximity transducer is easily influenceed by environment, and screen control efficiency is put out in influence, can not more preferable power saving, user experience is poor.
The content of the invention
The present invention provides one kind and puts out screen control method, device and terminal device, to solve accurately control in the prior art
Screen processed extinguishes, the problem of being unable to reach power saving purpose.
The embodiment of the present invention provides one kind and puts out screen control method, including：Three-dimensional head portrait mould based on structure photogenerated user
Type；The head portrait characteristic information of user is extracted from the three-dimensional head portrait model；Judged according to the head portrait characteristic information of the user
The user face whether screen-oriented；If the non-screen-oriented of face of the user, control screen put out screen.
Another embodiment of the present invention provides one kind and puts out screen control device, including：Generation module, for based on structure photogenerated
The three-dimensional head portrait model of user；Extraction module, for extracting the head portrait characteristic information of user from the three-dimensional head portrait model；Sentence
Disconnected module, for according to the head portrait characteristic information of the user judge the user it is facial whether screen-oriented；Control module,
If for the non-screen-oriented of face of the user, control screen puts out screen.
A further embodiment of the present invention provides a kind of non-transitorycomputer readable storage medium, is stored thereon with computer journey
Sequence, realized when the computer program is executed by processor and put out screen control method as described in first aspect present invention embodiment.
Further embodiment of this invention provides a kind of terminal device, including memory, processor and is stored in the memory
Computer program that is upper and can running on the processor, screen control method is put out described in first aspect present invention embodiment.
Technical scheme provided in an embodiment of the present invention can include the following benefits：
Based on the three-dimensional head portrait model of structure photogenerated user, and from the three-dimensional head portrait model extract user head portrait
Characteristic information, then according to the head portrait characteristic information of the user judge the user face whether screen-oriented, if institute
The non-screen-oriented of face of user to be stated, then controls screen to put out screen, application is wider, can make and more accurately put out screen control,
Electricity is saved, improves user experience.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart according to an embodiment of the invention for putting out screen control method；
Fig. 2 is the schematic diagram of a scenario of structural light measurement according to an embodiment of the invention；
Fig. 3 is the flow chart in accordance with another embodiment of the present invention for putting out screen control method；
Fig. 4 is the structured flowchart according to an embodiment of the invention for putting out screen control device；
Fig. 5 is the structural representation of terminal device according to an embodiment of the invention；
Fig. 6 is the schematic diagram of image processing circuit according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings describe the embodiment of the present invention puts out screen control method, device and terminal device.
Fig. 1 is the flow chart according to an embodiment of the invention for putting out screen control method.
Include as shown in figure 1, this puts out screen control method：
S101, the three-dimensional head portrait model based on structure photogenerated user.
In correlation technique, when user calls, user face is mainly detected by the proximity transducer in mobile phone
With the distance of mobile phone, whether face is judged close to mobile phone with this, if close to mobile phone, control mobile phone screen extinguishes.But its
It can be only applied in call scene, application is small.Therefore, the present invention, which proposes a kind of structure light that is based on, carries out user's head portrait inspection
The mode of survey, control screen can put out screen exactly.
In order to improve accuracy, the collection of the relevant information of threedimensional model is carried out to the head of user using structure light,
Such as laser stripe, Gray code, sine streak or, non-homogeneous speckle etc., thus, because structure light can be based on head
Profile and depth information carry out the collection of the relevant information of threedimensional model to user, higher compared to correlation technique, accuracy.
More it is apparent from order that obtaining those skilled in the art, the three-dimensional of user how is gathered according to structure light
The relevant information of model, illustrate its concrete principle by taking a kind of widely used fringe projection technology as an example below.Using face
When structured light projection, as shown in Fig. 2 producing sine streak by computer programming, the sine streak is set by projection
Degree of crook that is standby to project to measured object, being modulated using camera shooting striped by object, is demodulated the curved stripes and obtains phase,
Phase is converted into height again.Certainly wherein crucial point is exactly the registration of system, including camera and projector equipment
Registration, be otherwise more likely to produce error.Specifically, the phase of the phase of curved stripes and reference stripe can be subtracted each other to obtain
Phase difference, the phase difference then characterizes elevation information of the measured object with respect to the plane of reference, then substitutes into phase and high-degree of conversion formula, from
And obtain the threedimensional model of object under test.It should be appreciated that in actual applications, according to the difference of concrete application scene, sheet
Structure light employed in inventive embodiments can also be other arbitrary graphic patterns in addition to above-mentioned striped.
In one embodiment of the invention, can be to user's projective structure light, and obtain the structure light by user's head
Image, the three-dimensional head portrait model of user is then generated according to structure light image.
Specifically, can phase information corresponding to deformation position pixel in demodulation structure light image, phase information is converted into
Elevation information, the three-dimensional head portrait model of user is then obtained according to elevation information.
It should be noted that according to the difference of application scenarios, three can be obtained based on structure light image in different ways
Dimension module.
Example 1：Phase information corresponding to deformation position pixel in demodulation structure light image, phase information is converted into height
Information, three-dimensional head portrait model corresponding with structure light image is obtained according to elevation information, it is of course also possible to reference to outline identification skill
Art, based on three-dimensional head portrait model, the profile of user's head is identified, three-dimensional head portrait model is obtained according to the profile.
Example 2：Using relative profile identification technology, position letter of the user's head in overall structure light image is identified
Breath, the phase information of pixel corresponding to head, elevation information is converted into by phase information in demodulation structure light image, according to the height
Degree information establishes three-dimensional head portrait model.
S102, the head portrait characteristic information of user is extracted from three-dimensional head portrait model.
S103, according to the head portrait characteristic information of user judge user face whether screen-oriented.
Specifically, can according to corresponding to the head portrait characteristic information of user determines the face of user direction.When the face of user
When angle between corresponding direction and the direction of screen institute face is in preset range, it may be determined that the face of user is towards screen
Curtain；When exceeding preset range towards the angle between the direction with screen institute face corresponding to the face of user, user is determined
The non-screen-oriented of face.Such as：The distance of user or so two eyes to screens has differed by more than certain numerical value, i.e. left eye exists
Preceding right eye rear, or right eye in preceding left eye in characteristic information that is rear, or even there was only an eyes in head portrait characteristic information, then
Can determine the face of user towards direction and screen face direction between angle beyond default scope, that is, use
Family is not towards screen.Again for example：The nose of user deviate from 5 centimetres of the position of center, and the feature of nose side is more than another
The feature of side, then illustrate user face towards direction and screen face direction between angle beyond default
Scope, user is not towards screen.
S104, if the non-screen-oriented of face of user, control screen put out screen.
When detecting the facial non-screen-oriented of user, controllable screen puts out screen, illustrates that user does not watch currently
Screen, so as to reach the purpose of power saving.
In addition, as shown in figure 3, it can also include the steps of：
S105, in preset time, detect user face whether screen-oriented.
After screen is put out, can also in preset time, continue to monitor user face whether screen-oriented.
S106, if the facial screen-oriented of user, control screen bright screen.
Such as：User is called by companion temporarily, and head has turned to the side away from screen.And simply simply talked with companion
Two, now user needed to light screen again not less than 1 minute the time, therefore was detecting the face of user face again
During to screen, screen can be intelligently lighted, so that user continues to watch screen.
In order that those skilled in the art, to the embodiment of the present invention put out screen control method it is clearer, tie below
Specific application scenarios are closed to be illustrated.
In this example, user is played with mobile phone and played, and mobile phone can generate by camera to user's projective structure light
The structure light image modulated by active user head.Phase information corresponding to demodulating the structure light image, obtain the three of user
Tie up avatar model.Then, from three-dimensional head portrait model head portrait characteristic information corresponding to extraction judge user it is facial whether towards
Screen.If user's face remains screen-oriented, current state is kept.Now, user chats with being sitting in the friend on side
My god, screen-picture is no longer watched, after the non-screen-oriented of face of user is detected, screen can be automatically controlled and put out screen, so as to
Reach the purpose of power saving.It is, of course, also possible to the operation for touching screen is more accurately judged with reference to user.
It should be appreciated that described above is merely illustrative, this method, which is also applied to, to be called scene etc. other should
With in scene, have a wide range of application, detection is more accurate.
The embodiment of the present invention puts out screen control method, based on the three-dimensional head portrait model of structure photogenerated user, and from three-dimensional
The head portrait characteristic information of user is extracted in avatar model, then according to the head portrait characteristic information of user judge user it is facial whether
Screen-oriented, if the non-screen-oriented of face of user, control screen put out screen, application is wider, and it is more accurate to make
Ground puts out screen control, saves electricity, improves user experience.
In order to realize above-described embodiment, the invention also provides one kind puts out screen control device, Fig. 4 is according to the present invention one
The structured flowchart for putting out screen control device of embodiment, as shown in figure 4, the device includes generation module 100, extraction module 200, sentenced
Disconnected module 300 and control module 400.
Wherein, generation module 100, for the three-dimensional head portrait model based on structure photogenerated user；
Extraction module 200, for extracting the head portrait characteristic information of user from three-dimensional head portrait model；
Judge module 300, for according to the head portrait characteristic information of user judge user face whether screen-oriented；
Control module 400, if the non-screen-oriented of face for user, control screen put out screen.
In one embodiment of the invention, control module 400, it is additionally operable to after control screen puts out screen, when default
In, detect user face whether screen-oriented, if the facial screen-oriented of user, control screen bright screen.
It should be noted that the foregoing explanation to putting out screen control method, be also applied for the embodiment of the present invention puts out screen
Control device, unpub details in the embodiment of the present invention, will not be repeated here.
The embodiment of the present invention puts out screen control device, based on the three-dimensional head portrait model of structure photogenerated user, and from three-dimensional
The head portrait characteristic information of user is extracted in avatar model, then according to the head portrait characteristic information of user judge user it is facial whether
Screen-oriented, if the non-screen-oriented of face of user, control screen put out screen, application is wider, and it is more accurate to make
Ground puts out screen control, saves electricity, improves user experience.
In order to realize above-described embodiment, the present invention also proposes a kind of non-transitorycomputer readable storage medium, deposited thereon
Computer program is contained, can be realized when the computer program is executed by processor and put out screen controlling party such as previous embodiment
Method.
In order to realize above-described embodiment, the invention also provides a kind of terminal device.
As shown in figure 5, the terminal device includes：Processor 51, memory 52 and image processing circuit 53.
Wherein, memory 52 is used to store executable program code；What processor 51 was stored by reading in memory 52
Executable program code, and image processing circuit 53 are handled image, to realize as put out screen control in previous embodiment
Method.
Specifically, image processing circuit 53 can utilize hardware and/or component software to realize, it may include define ISP
The various processing units of (Image Signal Processing, picture signal processing) pipeline.
Fig. 6 is the schematic diagram of image processing circuit in one embodiment.As shown in fig. 6, for purposes of illustration only, only show and this
The various aspects of the related image processing techniques of inventive embodiments.
As shown in fig. 6, image processing circuit includes imaging device 610, ISP processors 630 and control logic device 640.Into
As equipment 610 may include there is one or more lens 612, the camera of imaging sensor 614 and structured light projector 616.
Structured light projector 616 is by structured light projection to measured object.Wherein, the structured light patterns can be laser stripe, Gray code, sine
Striped or, speckle pattern of random alignment etc..Imaging sensor 614 catches the structure light image that projection is formed to measured object,
And send structure light image to ISP processors 630, acquisition measured object is demodulated to structure light image by ISP processors 630
Depth information.Meanwhile imaging sensor 614 can also catch the color information of measured object.It is of course also possible to by two images
Sensor 614 catches the structure light image and color information of measured object respectively.
Wherein, by taking pattern light as an example, ISP processors 630 are demodulated to structure light image, are specifically included, from this
The speckle image of measured object is gathered in structure light image, by the speckle image of measured object with reference speckle image according to pre-defined algorithm
View data calculating is carried out, each speckle point for obtaining speckle image on measured object dissipates relative to reference to the reference in speckle image
The displacement of spot.The depth value of each speckle point of speckle image is calculated using trigonometry conversion, and according to the depth
Angle value obtains the depth information of measured object.
It is, of course, also possible to obtain the depth image by the method for binocular vision or based on jet lag TOF method
Information etc., is not limited herein, as long as can obtain or belong to this by the method for the depth information that measured object is calculated
The scope that embodiment includes.
After the color information that ISP processors 630 receive the measured object that imaging sensor 614 captures, it can be tested
View data corresponding to the color information of thing is handled.ISP processors 630 are analyzed view data can be used for obtaining
It is determined that and/or imaging device 610 one or more control parameters image statistics.Imaging sensor 614 may include color
Color filter array (such as Bayer filters), imaging sensor 614 can obtain to be caught with each imaging pixel of imaging sensor 614
Luminous intensity and wavelength information, and provide one group of raw image data being handled by ISP processors 630.
ISP processors 630 handle raw image data pixel by pixel in various formats.For example, each image pixel can
Bit depth with 8,10,12 or 14 bits, ISP processors 630 can be carried out at one or more images to raw image data
Reason operation, image statistics of the collection on view data.Wherein, image processing operations can be by identical or different bit depth
Precision is carried out.
ISP processors 630 can also receive pixel data from video memory 620.Video memory 620 can be memory device
The independent private memory in a part, storage device or electronic equipment put, and may include DMA (Direct Memory
Access, direct direct memory access (DMA)) feature.
When receiving raw image data, ISP processors 630 can carry out one or more image processing operations.
After ISP processors 630 get color information and the depth information of measured object, it can be merged, obtained
3-D view.Wherein, can be extracted by least one of appearance profile extracting method or contour feature extracting method corresponding
The feature of measured object.Such as pass through active shape model method ASM, active appearance models method AAM, PCA PCA, discrete
The methods of cosine transform method DCT, the feature of measured object is extracted, is not limited herein.It will be extracted respectively from depth information again
The feature of measured object and feature progress registration and the Fusion Features processing that measured object is extracted from color information.Herein refer to
Fusion treatment can be the feature that will be extracted in depth information and color information directly combination or by different images
Middle identical feature combines after carrying out weight setting, it is possibility to have other amalgamation modes, finally according to the feature after fusion, generation
3-D view.
The view data of 3-D view can be transmitted to video memory 620, to carry out other place before shown
Reason.ISP processors 630 from the reception processing data of video memory 620, and to processing data carry out original domain in and RGB and
Image real time transfer in YCbCr color spaces.The view data of 3-D view may be output to display 660, so that user sees
See and/or further handled by graphics engine or GPU (Graphics Processing Unit, graphics processor).In addition,
The output of ISP processors 630 also can be transmitted to video memory 620, and display 660 can read from video memory 620 and scheme
As data.In one embodiment, video memory 620 can be configured as realizing one or more frame buffers.In addition, ISP
The output of processor 630 can be transmitted to encoder/decoder 650, so as to encoding/decoding image data.The view data of coding
It can be saved, and be decompressed before being shown in the equipment of display 660.Encoder/decoder 650 can be by CPU or GPU or association
Processor is realized.
The image statistics that ISP processors 630 determine, which can be transmitted, gives the unit of control logic device 640.Control logic device 640
It may include the processor and/or microcontroller for performing one or more routines (such as firmware), one or more routines can be according to connecing
The image statistics of receipts, determine the control parameter of imaging device 610.
It should be noted that the foregoing explanation for shielding control method embodiment to putting out is also applied for the terminal of the embodiment
Equipment, its realization principle is similar, and here is omitted.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (12)
1. one kind puts out screen control method, it is characterised in that including：
Three-dimensional head portrait model based on structure photogenerated user；
The head portrait characteristic information of user is extracted from the three-dimensional head portrait model；
According to the head portrait characteristic information of the user judge the user face whether screen-oriented；
If the non-screen-oriented of face of the user, control screen put out screen.
2. the method as described in claim 1, it is characterised in that the three-dimensional head portrait model based on structure photogenerated user, including：
To user's projective structure light, and obtain the structure light image by user's head；
The three-dimensional head portrait model of the user is generated according to the structure light image.
3. method as claimed in claim 2, it is characterised in that the three-dimensional head of the user is generated according to the structure light image
As model, including：
Demodulate phase information corresponding to deformation position pixel in the structure light image；
The phase information is converted into elevation information；
The three-dimensional head portrait model of the user is obtained according to the elevation information.
4. the method as described in claim 1, it is characterised in that the user is judged according to the head portrait characteristic information of the user
Face whether screen-oriented, including：
The direction according to corresponding to the head portrait characteristic information of the user determines the face of the user；
When being in corresponding to the face of the user towards the angle between the direction with screen institute face in preset range, really
The facial screen-oriented of the fixed user；
When exceeding preset range towards the angle between the direction with screen institute face corresponding to the face of the user, it is determined that
The non-screen-oriented of face of the user.
5. the method as described in claim 1, it is characterised in that after control screen puts out screen, in addition to：
In preset time, detect the user face whether screen-oriented；
If the facial screen-oriented of the user, screen bright screen is controlled.
6. one kind puts out screen control device, it is characterised in that including：
Generation module, for the three-dimensional head portrait model based on structure photogenerated user；
Extraction module, for extracting the head portrait characteristic information of user from the three-dimensional head portrait model；
Judge module, for according to the head portrait characteristic information of the user judge the user face whether screen-oriented；
Control module, if the non-screen-oriented of face for the user, control screen put out screen.
7. device as claimed in claim 6, it is characterised in that the generation module, be used for：
To user's projective structure light, and obtain the structure light image by user's head；
The three-dimensional head portrait model of the user is generated according to the structure light image.
8. device as claimed in claim 7, it is characterised in that the generation module, be used for：
Demodulate phase information corresponding to deformation position pixel in the structure light image；
The phase information is converted into elevation information；
The three-dimensional head portrait model of the user is obtained according to the elevation information.
9. device as claimed in claim 6, it is characterised in that the judge module, be used for：
The direction according to corresponding to the head portrait characteristic information of the user determines the face of the user；
When being in corresponding to the face of the user towards the angle between the direction with screen institute face in preset range, really
The facial screen-oriented of the fixed user；
When exceeding preset range towards the angle between the direction with screen institute face corresponding to the face of the user, it is determined that
The non-screen-oriented of face of the user.
10. device as claimed in claim 6, it is characterised in that the control module, be additionally operable to：
Control screen put out screen after, in preset time, detect the user face whether screen-oriented；
If the facial screen-oriented of the user, screen bright screen is controlled.
11. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, it is characterised in that the program
Realized when being executed by processor and put out screen control method as described in claim any one of 1-5.
12. a kind of terminal device, it is characterised in that including memory and processor, storing computer in the memory can
Reading instruction, when the instruction is by the computing device so that the computing device such as any one of claim 1 to 5 institute
That states puts out screen control method.
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