CN107102801A - Terminal screen spinning solution and device - Google Patents

Abstract

The present disclosure relates to a terminal screen rotation method and device. It involves the field of intelligent terminal technology. The method includes: when it is detected that the placement state of the terminal changes, judging whether it is necessary to obtain the face image of the current user, and when it is necessary to obtain the face image of the current user, performing face recognition on the face image to obtain the face image The angular relationship between the line between the eyes and the current screen display direction of the terminal screen, and determine whether to trigger the terminal screen rotation according to the angular relationship. The above technical solution provided by the embodiments of the present disclosure can not trigger the screen switching operation immediately when the placement state changes, but determines whether to trigger it by obtaining the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen. Rotate the screen, so as to avoid the problem that the terminal automatically changes the screen when the user does not want to change the screen, and improves the user experience.

Description

Terminal screen rotation method and device

technical field

The present disclosure relates to the technical field of smart terminals, and in particular, to a method and device for rotating a terminal screen.

Background technique

Terminal devices such as mobile phones sense the posture state of the mobile phone through the accelerometer. For a fixed reference coordinate system, the relatively stable data of the acceleration sensor can be used to calculate the current attitude information of the mobile phone, such as the orientation of the mobile phone screen, whether the mobile phone is horizontal or vertical, and so on.

The stable data of the acceleration sensor can detect the characteristics of the attitude of the mobile phone. It is generally used in mobile phones as a method to detect the automatic screen rotation of the mobile phone. When the mobile phone is in a horizontal state relative to the ground, the screen display will change according to the data reported by the acceleration. The horizontal screen display state, and when the mobile phone returns to the state perpendicular to the ground, the screen display will return to the vertical screen state for display. This function of detecting the attitude of the mobile phone through the acceleration sensor and then making the screen display in different directions is called the function of automatic screen rotation.

The existing automatic screen switching function of the mobile phone operating system is only realized by using the acceleration sensor. Use the acceleration sensor data to calculate the angle between the plane where the screen of the mobile phone is located and the direction of gravitational acceleration to determine the attitude information of the mobile phone at this time, and further determine whether the display of the mobile phone is turned into a horizontal screen display when the mobile phone is in a horizontal state, or when it is rotated Whether to restore the vertical screen display when it is in the vertical state.

Contents of the invention

In order to overcome the problems existing in related technologies, the present disclosure provides a terminal screen rotation method and device. Described technical scheme is as follows:

According to a first aspect of an embodiment of the present disclosure, a terminal screen rotation method is provided, including:

When it is detected that the placement state of the terminal changes, it is judged whether it is necessary to obtain the face image of the current user;

When it is necessary to obtain the face image of the current user, perform face recognition on the face image, and obtain the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen;

Determine whether to trigger screen rotation of the terminal according to the angular relationship.

Optionally, when it is detected that the placement state of the terminal changes, judging whether to acquire the face image of the current user may include:

When it is detected that the placement state of the terminal changes from a vertical state to a horizontal state, it is determined that the face image of the current user needs to be acquired.

Optionally, when it is detected that the placement state of the terminal changes, judging whether to acquire the face image of the current user may include:

When it is detected that the placement state of the terminal changes from a horizontal state to a vertical state, it is determined that it is not necessary to acquire the face image of the current user.

Optionally, the determining whether to trigger the terminal screen rotation according to the angular relationship may include:

When the angle between the line connecting the eyes in the face image and the current display direction of the terminal screen is smaller than a preset threshold, triggering the rotation of the terminal screen is prohibited;

When the angle between the line connecting the two eyes in the face image and the current screen display direction of the terminal screen is greater than or equal to the preset threshold, the terminal screen is triggered to rotate.

Optionally, when it is detected that the placement state of the terminal changes, judging whether to acquire the face image of the current user may include:

When it is determined that the face image of the current user needs to be acquired, the camera device of the terminal is triggered to take a picture of the current user to obtain the face image of the current user.

According to a second aspect of an embodiment of the present disclosure, there is provided a device for rotating a terminal screen, including:

The judging module is configured to judge whether it is necessary to obtain the face image of the current user when it is detected that the placement state of the terminal changes;

The recognition module is configured to perform face recognition on the face image when it is necessary to obtain the face image of the current user, and obtain the angular relationship between the line connecting the eyes in the face image and the display direction of the current screen of the terminal screen ;

The determination module is configured to determine whether to trigger the rotation of the terminal screen according to the angle relationship.

Optionally, the judging module may include:

The first determination sub-module is configured to determine that the face image of the current user needs to be acquired when it is detected that the placement state of the terminal changes from a vertical state to a horizontal state.

Optionally, the judging module may also include:

The second determining submodule is configured to determine that it is not necessary to acquire the face image of the current user when it is detected that the placement state of the terminal changes from a horizontal state to a vertical state.

Optionally, the determination module may include:

The prohibition submodule is configured to prohibit triggering of the terminal screen rotation when the angle between the line connecting the eyes in the face image and the current screen display direction of the terminal screen is smaller than a preset threshold;

The triggering submodule is configured to trigger the rotation of the terminal screen when the angle between the line connecting the eyes in the face image and the current screen display direction of the terminal screen is greater than or equal to the preset threshold.

Optionally, the judging module may include:

The photographing sub-module is configured to trigger the camera of the terminal to photograph the current user when it is determined that the face image of the current user needs to be obtained, so as to obtain the face image of the current user.

According to a third aspect of the embodiments of the present disclosure, there is provided a device for rotating a terminal screen, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured as:

When it is detected that the placement state of the terminal changes, it is judged whether it is necessary to obtain the face image of the current user;

When it is necessary to obtain the face image of the current user, perform face recognition on the face image, and obtain the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen;

Determine whether to trigger screen rotation of the terminal according to the angular relationship.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the technical solution provided by the embodiments of the present disclosure, when it is detected that the placement state of the terminal changes, it is judged whether it is necessary to obtain the face image of the current user, and when the face image of the current user needs to be obtained, the face image is processed. Face recognition, to obtain the angular relationship between the line connecting the eyes in the face image and the current screen display direction of the terminal screen, and determine whether to trigger the terminal screen rotation according to the angular relationship. Therefore, when the placement state changes, the screen-turning operation is not triggered immediately, but by obtaining the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen to determine whether to trigger the screen-turning, thereby preventing the user from It is hoped that the terminal will automatically change the screen when the screen is changed, so as to improve the user experience.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a flow chart showing a method for rotating a terminal screen according to an exemplary embodiment.

Fig. 2 is a flow chart of step S103 in a method for rotating a terminal screen according to an exemplary embodiment.

Fig. 3 is a block diagram showing a device for rotating a terminal screen according to an exemplary embodiment.

Fig. 4 is a block diagram of a determination module 33 in an apparatus for rotating a terminal screen according to an exemplary embodiment.

Fig. 5 is a block diagram showing a device suitable for rotating a terminal screen according to an exemplary embodiment.

detailed description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

When a user holds a terminal such as a mobile phone, in some cases, the mobile phone is in a horizontal state and the user is also in a horizontal state. The ground is in a horizontal state, and the automatic screen rotation function will set the display to a landscape state, but the user does not want to use the landscape state display, but still displays the vertical screen.

Simply using the acceleration sensor to determine the state of the mobile phone to switch the screen sometimes affects the user's experience. In the case of some users who do not expect the screen to change, they perform the screen switch operation, which brings a bad user experience. In order to overcome the above problems, an embodiment of the present disclosure provides a terminal screen rotation method, which adds the recognition result of the user's face as another prerequisite for judging whether to turn the screen, and combines the acceleration sensor to enhance the judgment of the screen turn condition , so as to solve the problem that in some cases the user does not want to perform screen transfer, but triggers screen transfer.

FIG. 1 is a terminal screen rotation method shown in an embodiment of the present disclosure, which is used for terminal devices with display screens such as mobile phones and PADs. As shown in Figure 1, the method includes steps S101-S103:

In step S101, when it is detected that the placement state of the terminal changes, it is judged whether it is necessary to acquire the face image of the current user.

In step S102, when it is necessary to obtain the face image of the current user, face recognition is performed on the face image to obtain the angular relationship between the line connecting the eyes in the face image and the current display direction of the terminal screen.

In step S103, it is determined whether to trigger the rotation of the terminal screen according to the angle relationship.

In the above method of the embodiment of the present disclosure, when it is detected that the placement state of the terminal changes, it is judged whether it is necessary to obtain the face image of the current user, and when the face image of the current user needs to be obtained, face recognition is performed on the face image , obtain the angular relationship between the line connecting the eyes in the face image and the current screen display direction of the terminal screen, and determine whether to trigger the terminal screen rotation according to the angular relationship. Therefore, when the placement state changes, the screen-turning operation is not triggered immediately, but by obtaining the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen to determine whether to trigger the screen-turning, thereby preventing the user from It is hoped that the terminal will automatically change the screen when the screen is changed, so as to improve the user experience.

It should be added that step S101 can be implemented as the following step A:

Step A, when it is detected that the placement state of the terminal has changed from a vertical state to a horizontal state, it is determined that the face image of the current user needs to be acquired.

In this embodiment, when it is monitored that the placement state of the terminal changes from a vertical state to a horizontal state, there are two situations at this time. One situation is that the user needs to watch the video, and at this time it needs to be viewed on a horizontal screen; the other situation is , when the user is lying down and looking at the mobile phone, he does not want to use the horizontal screen display at this time, but still maintains the vertical screen display. At this point, it is necessary to further determine which situation is the case. Therefore, it is necessary to obtain the face image of the current user. In this way, it is possible to accurately understand the user's intention, make the triggering conditions for automatic screen transfer more reasonable, and avoid automatic screen transfer when the screen transfer is not desired.

It should be added that step S101 can also be implemented as the following step B:

Step B, when it is detected that the placement state of the terminal changes from a horizontal state to a vertical state, it is determined that it is not necessary to acquire the face image of the current user.

In this embodiment, when it is detected that the placement state of the terminal changes from a horizontal state to a vertical state, it is not necessary to obtain the face image of the current user, but to directly calculate whether it is necessary to trigger a switch to a vertical screen display based on the data of the acceleration sensor action, thereby reducing the processing steps of the terminal.

The second point that needs to be supplemented is that, as shown in Figure 2, step S103 can be implemented as the following steps S1031-S1032:

In step S1031, when the angle between the line connecting the two eyes in the face image and the current display direction of the terminal screen is smaller than a preset threshold, triggering the rotation of the terminal screen is prohibited.

In step S1032, when the angle between the line connecting the eyes in the face image and the current display direction of the terminal screen is greater than or equal to a preset threshold, the terminal screen rotation is triggered.

In this embodiment, when the angle between the line connecting the eyes in the face image and the current screen display direction of the terminal screen is less than a preset threshold, triggering the rotation of the terminal screen is prohibited; when the angle between the two is greater than or equal to the preset When the threshold is reached, the terminal screen rotation is triggered. Integrate the binocular recognition technology and acceleration sensor in face recognition to enhance the control method of automatic screen rotation and improve user experience.

The third point that needs to be supplemented is that step S101 can also be implemented as the following step C:

Step C, when it is determined that the face image of the current user needs to be acquired, the camera device of the terminal is triggered to take a picture of the current user to obtain the face image of the current user.

The camera device of the terminal may be, for example, a front camera, and the user is photographed by the front camera to obtain a face image of the current user. Therefore, the face image of the current user can be obtained conveniently, and then the face recognition can be performed.

The following are device embodiments of the present disclosure, which can be used to implement the method embodiments of the present disclosure. For details not disclosed in the disclosed device embodiments, please refer to the disclosed method embodiments.

Fig. 3 is a block diagram of a device for rotating a terminal screen according to an exemplary embodiment. As shown in Fig. 3, the device for rotating a terminal screen may include but not limited to a judgment module 31, an identification module 32, and a determination module 33, wherein:

The judging module 31 is configured to judge whether it is necessary to acquire the face image of the current user when it is detected that the placement state of the terminal changes;

The recognition module 32 is configured to perform face recognition on the face image when it is necessary to obtain the face image of the current user, and obtain the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen;

The determination module 33 is configured to determine whether to trigger the rotation of the terminal screen according to the angle relationship.

Optionally, the judging module 31 may include:

The first determination sub-module is configured to determine that it is necessary to obtain the face image of the current user when it is detected that the placement state of the terminal changes from a vertical state to a horizontal state.

Optionally, the judging module 31 may also include:

The second determining submodule is configured to determine that it is not necessary to acquire the face image of the current user when it is detected that the placement state of the terminal changes from a horizontal state to a vertical state.

Optionally, as shown in Figure 4, the determining module 33 may include:

The prohibition sub-module 331 is configured to prohibit the triggering of terminal screen rotation when the angle between the line between the eyes in the face image and the current screen display direction of the terminal screen is smaller than a preset threshold;

The triggering sub-module 332 is configured to trigger the rotation of the terminal screen when the angle between the line connecting the eyes in the face image and the current display direction of the terminal screen is greater than or equal to a preset threshold.

Optionally, the judging module 31 may include:

The photographing sub-module is configured to trigger the camera of the terminal to photograph the current user when it is determined that the face image of the current user needs to be obtained, so as to obtain the face image of the current user.

The above-mentioned device in the embodiment of the present disclosure judges whether it is necessary to obtain the face image of the current user when it is detected that the placement state of the terminal changes, and performs face recognition on the face image when it is necessary to obtain the face image of the current user , obtain the angular relationship between the line connecting the eyes in the face image and the current screen display direction of the terminal screen, and determine whether to trigger the terminal screen rotation according to the angular relationship. Therefore, when the placement state changes, the screen-turning operation is not triggered immediately, but by obtaining the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen to determine whether to trigger the screen-turning, thereby preventing the user from It is hoped that the terminal will automatically change the screen when the screen is changed, so as to improve the user experience.

An embodiment of the present disclosure also provides a terminal screen rotation device, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured as:

When it is detected that the placement state of the terminal changes, it is judged whether it is necessary to obtain the face image of the current user;

When it is necessary to obtain the face image of the current user, perform face recognition on the face image, and obtain the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen;

Determine whether to trigger screen rotation of the terminal according to the angular relationship.

The above processor is also configured to:

When it is detected that the placement state of the terminal changes from a vertical state to a horizontal state, it is determined that the face image of the current user needs to be acquired.

The above processor is also configured to:

When it is detected that the placement state of the terminal changes from a horizontal state to a vertical state, it is determined that it is not necessary to acquire the face image of the current user.

The above processor is also configured to:

When the angle between the line connecting the eyes in the face image and the current display direction of the terminal screen is smaller than a preset threshold, triggering the rotation of the terminal screen is prohibited;

When the angle between the line connecting the two eyes in the face image and the current screen display direction of the terminal screen is greater than or equal to the preset threshold, the terminal screen is triggered to rotate.

The above processor is also configured to:

When it is determined that the face image of the current user needs to be acquired, the camera device of the terminal is triggered to take a picture of the current user to obtain the face image of the current user.

Fig. 5 is a block diagram showing a device for rotating a terminal screen according to an exemplary embodiment, and the device is suitable for a terminal device. For example, the apparatus 1200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Apparatus 1200 may include one or more of the following components: processing component 1202, memory 1204, power supply component 1206, multimedia component 1208, audio component 1210, input/output (I/O) interface 1212, sensor component 1214, and communication component 1216 .

The processing component 1202 generally controls the overall operations of the device 1200, such as those associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1202 may include one or more processors 1220 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 1202 may include one or more modules that facilitate interaction between processing component 1202 and other components. For example, processing component 1202 may include a multimedia module to facilitate interaction between multimedia component 1208 and processing component 1202 .

The memory 1204 is configured to store various types of data to support operations at the device 1200 . Examples of such data include instructions for any application or method operating on device 1200, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1204 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 1206 provides power to various components of the device 1200 . Power components 1206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 1200 .

The multimedia component 1208 includes a screen that provides an output interface between the device 1200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 1208 includes a front camera and/or a rear camera. When the device 1200 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 1210 is configured to output and/or input audio signals. For example, the audio component 1210 includes a microphone (MIC), which is configured to receive external audio signals when the device 1200 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 1204 or sent via communication component 1216 . In some embodiments, the audio component 1210 also includes a speaker for outputting audio signals.

The I/O interface 1212 provides an interface between the processing component 1202 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

Sensor assembly 1214 includes one or more sensors for providing status assessments of various aspects of device 1200 . For example, the sensor component 1214 can detect the open/closed state of the device 1200, the relative positioning of components, such as the display and keypad of the device 1200, and the sensor component 1214 can also detect a change in the position of the device 1200 or a component of the device 1200 , the presence or absence of user contact with the device 1200 , the device 1200 orientation or acceleration/deceleration and the temperature change of the device 1200 . Sensor assembly 1214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 1214 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications. In some embodiments, the sensor component 1214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 1216 is configured to facilitate wired or wireless communication between the apparatus 1200 and other devices. The device 1200 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 1216 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 1200 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 1204 including instructions, which can be executed by the processor 1220 of the device 1200 to implement the above method. For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the above-mentioned device 1200, the above-mentioned device 1200 can execute a terminal screen rotation method, including:

When it is detected that the placement state of the terminal changes, it is judged whether it is necessary to obtain the face image of the current user;

When it is necessary to obtain the face image of the current user, perform face recognition on the face image, and obtain the angular relationship between the line between the eyes in the face image and the current screen display direction of the terminal screen;

Determine whether to trigger screen rotation of the terminal according to the angular relationship.

Optionally, when it is detected that the placement state of the terminal changes, judging whether to acquire the face image of the current user may include:

When it is detected that the placement state of the terminal changes from a vertical state to a horizontal state, it is determined that the face image of the current user needs to be acquired.

Optionally, when it is detected that the placement state of the terminal changes, judging whether to acquire the face image of the current user may include:

When it is detected that the placement state of the terminal changes from a horizontal state to a vertical state, it is determined that it is not necessary to acquire the face image of the current user.

Optionally, the determining whether to trigger the terminal screen rotation according to the angular relationship may include:

When the angle between the line connecting the eyes in the face image and the current display direction of the terminal screen is smaller than a preset threshold, triggering the rotation of the terminal screen is prohibited;

When the angle between the line connecting the two eyes in the face image and the current screen display direction of the terminal screen is greater than or equal to the preset threshold, the terminal screen is triggered to rotate.

Optionally, when it is detected that the placement state of the terminal changes, judging whether to acquire the face image of the current user may include:

When it is determined that the face image of the current user needs to be acquired, the camera device of the terminal is triggered to take a picture of the current user to obtain the face image of the current user.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (11)

1. a kind of terminal screen spinning solution, it is characterised in that including：

When the laying state for monitoring terminal changes, judge whether the facial image for needing to obtain active user；

When needing to obtain the facial image of active user, recognition of face is carried out to the facial image, the face figure is obtained The angular relationship of eyes line and the terminal screen current picture display direction as in；

Determined whether to trigger the terminal screen rotation according to the angular relationship.

2. according to the method described in claim 1, it is characterised in that described when the laying state for monitoring terminal changes When, judge whether the facial image for needing to obtain active user, including：

When the laying state for monitoring the terminal is become by vertical state turns to horizontality, it is determined that needing to obtain active user Facial image.

3. according to the method described in claim 1, it is characterised in that described when the laying state for monitoring terminal changes When, judge whether the facial image for needing to obtain active user, including：

When the laying state for monitoring the terminal is become by horizontality turns to vertical state, it is determined that current use need not be obtained The facial image at family.

4. according to the method described in claim 1, it is characterised in that described according to the angular relationship determines whether triggering Terminal screen rotates, including：

Preset when the angle between eyes line in the facial image and the terminal screen current picture display direction is less than During threshold value, forbid triggering the terminal screen rotation；

Be more than when the angle between eyes line in the facial image and the terminal screen current picture display direction or During equal to the predetermined threshold value, the terminal screen rotation is triggered.

5. method according to claim 1 or 2, it is characterised in that described when the laying state for monitoring terminal becomes During change, judge whether the facial image for needing to obtain active user, including：

When it is determined that needing to obtain the facial image of active user, the camera device for triggering the terminal is clapped active user Take the photograph, obtain the facial image of active user.

6. a kind of terminal screen rotating device, it is characterised in that including：

Judge module, when being configured as monitoring that the laying state of terminal changes, judges whether to need to obtain current use The facial image at family；

Identification module, when being configured as needing to obtain the facial image of active user, face knowledge is carried out to the facial image Not, the angular relationship of eyes line and the terminal screen current picture display direction in the facial image is obtained；

Determining module, is configured as being determined whether to trigger the terminal screen rotation according to the angular relationship.

7. device according to claim 6, it is characterised in that the judge module, including：

First determination sub-module, is configured as monitoring that the laying state of the terminal turns to horizontality by vertical state change When, it is determined that needing to obtain the facial image of active user.

8. device according to claim 6, it is characterised in that the judge module also includes：

Second determination sub-module, is configured as monitoring that the laying state of the terminal turns to vertical state by horizontality change When, it is determined that the facial image of active user need not be obtained.

9. device according to claim 6, it is characterised in that the determining module, including：

Forbid submodule, be configured as eyes line and the terminal screen current picture display direction in the facial image Between angle when being less than predetermined threshold value, forbid triggering the terminal screen rotation；

Submodule is triggered, eyes line and the terminal screen current picture display direction in the facial image is configured as Between angle when being more than or equal to the predetermined threshold value, trigger terminal screen rotation.

10. the device according to claim 6 or 7, it is characterised in that the judge module, including：

Shooting submodule, when being configured as determining to need to obtain the facial image of active user, triggers the shooting of the terminal Device is shot to active user, obtains the facial image of active user.

11. a kind of terminal screen rotating device, it is characterised in that including：

Processor；

Memory for storing processor-executable instruction；

Wherein, the processor is configured as：

When the laying state for monitoring terminal changes, judge whether the facial image for needing to obtain active user；

When needing to obtain the facial image of active user, recognition of face is carried out to the facial image, the face figure is obtained The angular relationship of eyes line and the terminal screen current picture display direction as in；

Determined whether to trigger the terminal screen rotation according to the angular relationship.