CN103412647A - Face recognition page display control method and mobile terminal - Google Patents
Face recognition page display control method and mobile terminal Download PDFInfo
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- CN103412647A CN103412647A CN201310350794XA CN201310350794A CN103412647A CN 103412647 A CN103412647 A CN 103412647A CN 201310350794X A CN201310350794X A CN 201310350794XA CN 201310350794 A CN201310350794 A CN 201310350794A CN 103412647 A CN103412647 A CN 103412647A
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- 210000001747 Pupil Anatomy 0.000 claims description 34
- 239000000284 extract Substances 0.000 claims description 21
- 210000003128 Head Anatomy 0.000 claims description 14
- 238000004458 analytical method Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000036544 posture Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000001815 facial Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 210000001331 Nose Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000000056 organs Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
Disclosed are a face recognition page display control method and a mobile terminal. The face recognition page display control method comprises performing face detection on an image collected by a camera device of the mobile terminal and extracting position coordinates of a face area, performing eye positioning on the face area, and recording eye image data; extracting center coordinates of two eyes, computing the angle of a connecting line of the centers of the two eyes and a page datum line, wherein the page datum line is a virtual line of reference in the horizontal direction of a current page; judging whether the angle is larger than or equal to a preset angle threshold value, if so, switching a current page display mode to a portrait display mode or a landscape display mode, and if not, maintaining the current page display mode. The face recognition page display control method is different from an existing gyroscope sensing control method, due to the fact that the judgment standard is the relative angle between the two eyes of a user and the mobile terminal, influences of factors of using postures of the user can be avoided, the accuracy of judgment can be improved, and better experience can be provided for the user.
Description
Technical field
The present invention relates to human-computer interaction technology, relate in particular to a kind of page display control method and mobile terminal of recognition of face.
Background technology
Current mobile phone etc. with the digital terminal of display screen in order to adapt to the display effect of different application occasion, operated by rotary motion has the horizontal screen display of display page show and erect screen display and show handoff functionality, for example applies the adjustment that video jukebox software needs to carry out the image display direction often.The switching of existing horizontal/vertical screen has use G-sensor, and namely gravity sensor is controlled switching time as testing tool, also has manually to go to arrange by artificial menu.The real demand that can reflect exactly the user manually is set, but operation is relatively loaded down with trivial details, intelligent degree is low; The G-sensor detection method can realize that horizontal/vertical screen automatically switches; comparatively convenient; but the accuracy of its operation has certain limitation; sight while using mobile terminal due to the user is varied; only rely on the direction of G-sensor sense terminals and judge that the required display mode of user often can cause erroneous judgement; such as when the user lies on one's side handheld device, utilize traditional G-sensor detection method often can not realize the display effect that the user is desired, the user experiences perfect not.Some mobile terminal can only adopt the method shown by physical button or virtual key locking horizontal/vertical screen to make up this defect, but this locking means is opposing with the wish automatically switched and go again, increases user's operation steps, still facility not.
Summary of the invention
In order to overcome the weak point of the prior art of above-mentioned indication, the invention provides a kind of page display control method and mobile terminal of recognition of face, with the horizontal screen display that realizes display page, show and the automatic switchover of erecting screen display and showing, avoid the user to use the impact of the factors such as posture, improve the accuracy of judgement degree.
The present invention is achieved by the following technical solutions:
A kind of page display control method of recognition of face, be applied to have the mobile terminal of display screen, and its step comprises:
S1, the enterprising pedestrian's face of image gathered at the camera head of mobile terminal detect and extract the position coordinates of human face region, and in the enterprising pedestrian's eye of human face region location, recorder's eye shadow is as data;
S2, extract two centre coordinates, calculate the angle of two lines of centres and page datum line, this page datum line is the virtual line of reference along the current page horizontal direction;
S3, judge whether described angle is more than or equal to default angle threshold, if switch current page display way, be that horizontal screen display is shown or erects screen display and show, otherwise maintain the current page display mode.
The Geometric center coordinates that two centre coordinates of described human face region are two profiles or the centre coordinate of two eye pupil benevolence.
Further, described step S2 comprises:
S21, the human eye image data of two is analyzed, judged whether to detect the pupil, if, execution step S22, otherwise finish the current page operation task, control mobile terminal and enter power down mode;
S22, extract two centre coordinates, calculate the angle of two lines of centres and page datum line.
Wherein, described step S21 judgement does not detect the pupil and refers to that the inferior image gathered of judgement N continuous does not extract the position coordinates in two eye pupil benevolence zones, and N is more than or equal to 1 natural number.
Described step S21 controls mobile terminal and enters power down mode and comprise and extinguish display screen.
Further, described step S3 judges whether described angle is more than or equal to default angle threshold, if switching current page display way and be horizontal screen display shows or erects screen display and show and comprise: when the described angle of judgement is more than or equal to default angle threshold, current horizontal screen display is shown to mode switches to perpendicular screen display and shows mode; When the described angle of judgement is more than or equal to default angle threshold, current perpendicular screen display is shown to mode switches to horizontal screen display and shows mode.
In the present invention, the scope that arranges of described default angle threshold is 30 °～60 °.
The present invention also provides a kind of mobile terminal, has display screen and camera head, comprising:
Face recognition module, detect and extract the position coordinates of human face region for the enterprising pedestrian's face of the image gathered at camera head, in the enterprising pedestrian's eye of human face region location, recorder's eye shadow is as data;
The human eye analysis module, be used to extracting two centre coordinates, calculate the angle of two lines of centres and page datum line, and this page datum line is the virtual line of reference along the current page horizontal direction;
Whether the judgement execution module, be more than or equal to default angle threshold be used to judging described angle, if switch current page display way, is that horizontal screen display is shown or erects screen display and show, otherwise maintains the current page display mode.
Preferably, two centre coordinates of the human face region that extracts of described human eye analysis module Geometric center coordinates that is two profiles or the centre coordinate of two eye pupil benevolence.
Further, described human eye analysis module comprises:
Pupil detecting unit, analyze for the human eye image data to two, judges whether to detect the pupil, if, start angle calculation unit, otherwise finish the current page operation task, control mobile terminal and enter power down mode;
Angle calculation unit, be used to extracting two centre coordinates, calculate the angle of two lines of centres and page datum line.
Compared with prior art, the present invention is according to the camera head of mobile terminal, especially front-facing camera is identified in people's face the central point of two, and the angle of calculating two lines of centres and page datum line judges the angle that the active user watches, and realizes that the switching anyhow of current page shows; Be different from existing gyroscope sensing control method, because criterion is the relative angle between user's eyes and mobile terminal, thereby can avoid the user to use the impact of the factors such as posture, improve the accuracy of judgement degree.On the other hand, when the user watches for a long time, eyes are tired and while closing one's eyes rest, camera is by user's eyes closure being detected, and automatically close or suspend the tasks such as video playback, Image Display of current page operation, reach the effect of putting out the screen power saving, solve that at present a lot of mobile terminals exist because of can not auto sleep or sleep waste the defect of energy consumption, to the user, bring better experience.
The accompanying drawing explanation
Accompanying drawing 1 is the realization flow schematic diagram of page display control method of the recognition of face of an embodiment of the present invention;
Accompanying drawing 2 is the formation block diagram of the mobile terminal of an embodiment of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, the invention will be further described below in conjunction with drawings and Examples.
A kind of page display control method of recognition of face, be applied to have the mobile terminal of display screen and camera head, preferably, camera head is front-facing camera, described mobile terminal comprises the intelligent terminals such as smart mobile phone, panel computer, and the step of described method comprises:
S1, the enterprising pedestrian's face of image gathered at the camera head of mobile terminal detect and extract the position coordinates of human face region, and in the enterprising pedestrian's eye of human face region location, recorder's eye shadow is as data;
S2, extract two centre coordinates, calculate the angle of two lines of centres and page datum line, this page datum line is the virtual line of reference along the current page horizontal direction;
S3, judge whether described angle is more than or equal to default angle threshold, if switch current page display way, be that horizontal screen display is shown or erects screen display and show, otherwise maintain the current page display mode.
In step S1, when the user opens the video playback of the page presentation control function of this recognition of face or opening device or picture browsing application, the front-facing camera of equipment is with a time interval timing extraction facial image of setting, after the camera recognition detection arrives people's face, to knowing others face, carry out the human eye location, and record the position coordinates of human eye area, the human eye image datas such as position coordinates in pupil zone.Front-facing camera extracts the eye information of user face according to the interval of the time of setting, until the page presentation control function that equipment finally exits the operation task of current page or exits this recognition of face is for finishing.Existing face recognition technology not only can be identified the shape of people's face, and also can reach and realize precision of the presently claimed invention for the face organs' such as eyes, nose identification.
In step S2, from the human eye image data recorded step S1, extracting two centre coordinates, the Geometric center coordinates that two centre coordinates of described human face region are two profiles or the Geometric center coordinates of two eye pupil benevolence.Calculate the angle of two lines of centres and page datum line, this page datum line is the line of a virtual conduct reference, and its direction is the horizontal direction shown along the shown current page of mobile terminal.Choose in the facial image of camera collection two the even directions of being aligneds, compare with the page datum line of the current page shown in display screen.
Further, described step S2 comprises:
S21, the human eye image data of two is analyzed, judged whether to detect the pupil, if, execution step S22, otherwise finish the current page operation task, control mobile terminal and enter power down mode;
S22, extract two centre coordinates, calculate the angle of two lines of centres and page datum line.
Wherein, described step S21 judgement does not detect the pupil and refers to that the inferior image gathered of judgement N continuous does not extract two eye pupil benevolence data, the i.e. position coordinates in two eye pupil benevolence zones, by this position coordinates, can reflect the pupil shape of two and calculate the centre coordinate of the pupil, wherein N is more than or equal to 1 natural number.While such as the human eye image data gathered when double camera head, all not extracting the position coordinates in two eye pupil benevolence zones, judgement can not be identified the pupil.By analysis, judge whether to extract two eye pupil benevolence data, can identify in user's certain hour and whether be in closed-eye state (as user's rest of sleeping), when system knowledge judgement user is in closed-eye state, judgement current page operation task finishes, thereby exits the current page operation task, plays application such as closing current video, and the control mobile terminal enters power down mode, comprise and extinguish display screen, thereby avoid unnecessary energy consumption, be the equipment power saving.Only, after two eye pupil benevolence data being detected, just carry out the angle calculation of two lines of centres.
In step S3, judge whether described angle is more than or equal to default angle threshold, if switching current page display way and be horizontal screen display shows or erects screen display and show and comprise: when the described angle of judgement is more than or equal to default angle threshold, current horizontal screen display is shown to mode switches to perpendicular screen display and shows mode; When the described angle of judgement is more than or equal to default angle threshold, current perpendicular screen display is shown to mode switches to horizontal screen display and shows mode.Described angle threshold can be user preset or adopts system default value, and it arranges scope is 30 °～60 °.Take 45 ° be example, when the angle of two lines of centres and page datum line surpasses 45 °, user's visual angle and current page demonstration are in a kind of inharmonic state, in order to adapt to user's visual angle, to current page, show or erect screen display and show such as video playback or picture-browsing window switch to horizontal screen display; When two lines of centres and page datum line angle for being less than 45 while spending, user's visual angle shows with current page the state that is in a kind of relative coordination, the current page shows that can adapt to the user uses, thereby maintains current page display way and do not change.Be applied in reality, the user can be by the display screen of terminal in rotary moving, changes the angle of user's two lines of centres and page datum line, thereby switches fast and accurately page display way.
Particularly, as shown in Figure 1, the smart mobile phone of take is example, and the present invention also provides the realization flow of page display control method of the recognition of face of a kind of embodiment, and its step comprises:
The page presentation control function of S101, unlatching recognition of face;
The camera head of S102, smart mobile phone regularly carries out the image acquisition of recognition of face;
S103, the position coordinates that extracts human face region pedestrian's eye location of going forward side by side;
S104, recorder's eye shadow is as data and analyze;
S105, judge whether to extract the position coordinates in two eye pupil benevolence zones, if, execution step S107, otherwise execution step S106;
S106, end current page operation task, extinguish display screen;
S107, two centre coordinates of extraction;
The angle of S108, two lines of centres of calculating and page datum line, this page datum line is the virtual line of reference along the current page horizontal direction;
S109, judge whether described angle is more than or equal to default angle threshold, if execution step S110, otherwise execution step S111;
S110, the current page display way of switching are that horizontal screen display is shown or erects screen display and show, and return to step S102;
S111, maintain the current page display mode, and return to step S102.
The present invention also provides a kind of mobile terminal, has display screen and camera head, as shown in Figure 2, comprising:
Face recognition module, detect and extract the position coordinates of human face region for the enterprising pedestrian's face of the image gathered at camera head, in the enterprising pedestrian's eye of human face region location, recorder's eye shadow is as data;
The human eye analysis module, be used to extracting two centre coordinates, calculate the angle of two lines of centres and page datum line, and this page datum line is the virtual line of reference along the current page horizontal direction;
Whether the judgement execution module, be more than or equal to default angle threshold be used to judging described angle, if switch current page display way, is that horizontal screen display is shown or erects screen display and show, otherwise maintains the current page display mode.
Preferably, two centre coordinates of the human face region that extracts of described human eye analysis module Geometric center coordinates that is two profiles or the centre coordinate of two eye pupil benevolence.
Further, described human eye analysis module comprises:
Pupil detecting unit, analyze for the human eye image data to two, judges whether to detect the pupil, if, start angle calculation unit, otherwise finish the current page operation task, control mobile terminal and enter power down mode;
Angle calculation unit, be used to extracting two centre coordinates, calculate the angle of two lines of centres and page datum line.
Wherein, described pupil detecting unit judgement does not detect pupil data and refers to that the inferior image gathered of judgement N continuous does not extract the position coordinates in two eye pupil benevolence zones, and N is more than or equal to 1 natural number.
Described pupil detecting unit is controlled mobile terminal and is entered power down mode and comprise and extinguish display screen.
Further, describedly judge that execution module is for judging whether described angle is more than or equal to default angle threshold, if switching current page display way and be horizontal screen display shows or erects screen display and show and comprise: for when the described angle of judgement is more than or equal to default angle threshold, current horizontal screen display is shown to mode switches to perpendicular screen display and shows mode; For when the described angle of judgement is more than or equal to default angle threshold, current perpendicular screen display is shown to mode switches to horizontal screen display and shows mode.
In mobile terminal of the present invention, the scope that arranges of described default angle threshold is 30 °～60 °, preferably, can be set to 45 °.
Above content is in conjunction with concrete optimal way further description made for the present invention, should not assert that specific embodiment of the invention is confined to above explanation.For those skilled in the art, without departing from the inventive concept of the premise, can also make some simple deduction or replace, within all should being considered as the definite protection domain of the claim of being submitted to by the present invention.
Claims (10)
1. the page display control method of a recognition of face, be applied to have the mobile terminal of display screen, and its step comprises:
S1, the enterprising pedestrian's face of image gathered at the camera head of mobile terminal detect and extract the position coordinates of human face region, and in the enterprising pedestrian's eye of human face region location, recorder's eye shadow is as data;
S2, extract two centre coordinates, calculate the angle of two lines of centres and page datum line, this page datum line is the virtual line of reference along the current page horizontal direction;
S3, judge whether described angle is more than or equal to default angle threshold, if switch current page display way, be that horizontal screen display is shown or erects screen display and show, otherwise maintain the current page display mode.
2. the page display control method of recognition of face according to claim 1, is characterized in that: the Geometric center coordinates that two centre coordinates of described human face region are two profiles or the centre coordinate of two eye pupil benevolence.
3. the page display control method of recognition of face according to claim 2, is characterized in that, described step S2 comprises:
S21, the human eye image data of two is analyzed, judged whether to detect the pupil, if, execution step S22, otherwise finish the current page operation task, control mobile terminal and enter power down mode;
S22, extract two centre coordinates, calculate the angle of two lines of centres and page datum line.
4. the page display control method of recognition of face according to claim 3, it is characterized in that: described step S21 judgement does not detect the pupil and refers to that the inferior image gathered of judgement N continuous does not extract the position coordinates in two eye pupil benevolence zones, and N is more than or equal to 1 natural number.
5. the page display control method of recognition of face according to claim 4, is characterized in that, described step S21 controls mobile terminal and enters power down mode and comprise and extinguish display screen.
6. the page display control method of recognition of face according to claim 2, is characterized in that, step S3 judges whether described angle is more than or equal to default angle threshold, is that horizontal screen display is shown or erects screen display and show and comprise if switch current page display way:
When the described angle of judgement is more than or equal to default angle threshold, current horizontal screen display is shown to mode switches to perpendicular screen display and shows mode;
When the described angle of judgement is more than or equal to default angle threshold, current perpendicular screen display is shown to mode switches to horizontal screen display and shows mode.
7. according to the page display control method of the described recognition of face of any one in claim 1～6, it is characterized in that: the scope that arranges of described default angle threshold is 30 °～60 °.
8. a mobile terminal, have display screen and camera head, it is characterized in that, comprising:
Face recognition module, detect and extract the position coordinates of human face region for the enterprising pedestrian's face of the image gathered at camera head, in the enterprising pedestrian's eye of human face region location, recorder's eye shadow is as data;
The human eye analysis module, be used to extracting two centre coordinates, calculate the angle of two lines of centres and page datum line, and this page datum line is the virtual line of reference along the current page horizontal direction;
Whether the judgement execution module, be more than or equal to default angle threshold be used to judging described angle, if switch current page display way, is that horizontal screen display is shown or erects screen display and show, otherwise maintains the current page display mode.
9. mobile terminal according to claim 8, is characterized in that: the Geometric center coordinates that two centre coordinates of the human face region that described human eye analysis module extracts are two profiles or the centre coordinate of two eye pupil benevolence.
10. mobile terminal according to claim 9, is characterized in that, described human eye analysis module comprises:
Pupil detecting unit, analyze for the human eye image data to two, judges whether to detect the pupil, if, start angle calculation unit, otherwise finish the current page operation task, control mobile terminal and enter power down mode;
Angle calculation unit, be used to extracting two centre coordinates, calculate the angle of two lines of centres and page datum line.
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