KR20150108561A - Mobile terminal and method for controlling the same - Google Patents

Abstract

Disclosed are a mobile terminal which can easily change settings related to the mobile terminal through a touch panel located on the outer side of a display unit, and a control method thereof. The mobile terminal of the present invention comprises: a display unit; a rear camera for obtaining an image in the rear direction of the mobile terminal (hereinafter referred to as a rear image); a front camera for obtaining an image in the front direction of the mobile terminal (hereinafter referred to as a front image); and a control unit for obtaining at least one of a separation distance to a user, who is using the mobile terminal, and a position at which the user looks, from the front image obtained from the front camera, and controlling an output area, which may be outputted through the display unit, from the rear image based on at least one of the separation distance and the position at which the user looks.

Description

[0001] MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME [0002]

The present invention relates to a mobile terminal capable of establishing a seamless view environment in which an output of a display unit is seamlessly connected to a surrounding environment and a control method thereof.

A terminal can be divided into a mobile / portable terminal and a stationary terminal depending on whether the terminal is movable or not. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

During use of the mobile terminal, the user can not see the back of the space occupied by the mobile terminal. In order to solve the above problems, a method of utilizing a transparent display is being discussed. However, it is not easy to fabricate a transparent display in a structure in which a backlight unit is to be used for a liquid crystal display, and an organic light-emitting diode (OLED) transparent display displays a black color There is a limit.

Accordingly, in the present invention, a method for securing a view behind the space occupied by a mobile terminal using a camera instead of adopting a transparent display unit is disclosed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mobile terminal with improved user convenience.

In particular, it is an object of the present invention to provide a mobile terminal capable of establishing a seamless viewing environment in which the output of the display unit is seamlessly connected by adjusting the output area to be displayed in the rear view image of the back side of the mobile terminal .

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, there is provided a display apparatus comprising: a display unit; A rear camera for acquiring a backward image (hereinafter, referred to as a rear image) of the mobile terminal; A front camera for acquiring an image of a front direction of the mobile terminal (hereinafter referred to as a 'front image'); And acquiring at least one of a distance between a user who is using the mobile terminal and a position of a line of sight from the front image obtained through the front camera, and based on at least one of the distance of the line and the position of the line of sight, And a controller for adjusting an output area to be output through the display unit of the rear image.

According to another aspect of the present invention, there is provided an image processing method comprising the steps of: acquiring an image (hereinafter, referred to as 'front image') of a front side direction of a mobile terminal from a front side camera; Obtaining at least one of a distance between a user who is using the mobile terminal and a position of a line of sight from the front image; And adjusting an output area to be output through the display unit among images (hereinafter, referred to as 'rear view images') of the back direction of the mobile terminal obtained from the rear camera, based on at least one of the distance and the position of the line of sight And a control method of the mobile terminal.

The present invention is not limited to the above-mentioned solving means, and other solving means which is not mentioned may be apparent from the following description to those skilled in the art to which the present invention belongs It can be understood.

Effects of the mobile terminal and the control method according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, it is possible to provide a mobile terminal that improves user convenience.

Specifically, the present invention can provide a mobile terminal capable of establishing a seamless view environment in which the output of the display unit and the surrounding environment are continuously connected by adjusting an output area to be displayed in the rear view image of the back side of the mobile terminal There are advantages.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

1A is a block diagram illustrating a mobile terminal according to the present invention.
1B and 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions.
2 is a diagram for explaining an example in which a seamless view is implemented.
3 is a diagram illustrating the size of an actual subject and the size of a subject in a rear view image.
4 is a flowchart illustrating an operation of the mobile terminal according to the present invention.
5 is a diagram exemplifying the distance information and sight line information.
FIGS. 6A and 6B are diagrams illustrating examples in which the size of an area to be displayed is adjusted according to distance information.
FIGS. 7A and 7B are diagrams illustrating examples in which the position of an area to be displayed is adjusted according to visual information.
8 is a diagram showing an example in which traffic information on road images or navigation information is displayed.
9A and 9B are diagrams illustrating an example in which the output mode of the display unit is changed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

For convenience of explanation, it is assumed that the mobile terminal 100 described in the present invention includes at least one of the components shown in Figs. 1A to 1C. Specifically, the mobile terminal 100 according to the present invention includes a camera (hereinafter referred to as a rear camera 121b) exposed on the rear surface of the mobile terminal 100, a camera And a front face camera 121a), a display unit 151 exposed on the front face of the mobile terminal 100, and a controller 180. It is needless to say that, in addition to the listed components, the mobile terminal 100 according to the present invention may further include at least one of the components shown in Figs. 1A to 1C.

The mobile terminal 100 according to the present invention is for allowing a portion corresponding to a space covered by the mobile terminal 100 to be output through the display unit 151 among the rear images acquired through the rear camera 121b. The portion of the rear image acquired through the rear camera 121b corresponding to the space hidden by the mobile terminal 100 is displayed on the display unit 151. Thus, A seamless view environment can be constructed.

For example, FIG. 2 is a diagram for explaining an example in which a seamless view is implemented. It is assumed that the mobile terminal 100, the user and the subject 10 are placed on a straight line, as in the example shown in Fig. 2 (a).

If the mobile terminal 100, the user and the subject 10 are placed on a straight line, as in the example shown in Fig. 2 (b), due to the space area occupied by the mobile terminal 100, ) Is obscured in the field of view of the user.

The mobile terminal 100 according to the present invention may be configured such that a part of the subject 10 obscured by the mobile terminal 100 is output through the display unit 151 as in the example shown in FIG. It is possible to provide a visual effect that seamlessly extends between the output of the display unit 151 and the surrounding environment.

The size of the subject 10 in the rear view image acquired through the rear camera 121b may be enlarged or reduced according to the distance between the rear camera 121b and the subject 10.

For example, FIG. 3 is a diagram illustrating the size of the actual subject 10 and the size of the subject 10 in the back image.

If the distance between the subject 10 and the rear camera 121b is very close to the actual subject 10, the size of the subject 10 in the rear view image is smaller than the size of the actual subject 10, as in the example shown in FIG. . In this case, since the rear image obtained through the rear camera 121b is captured in a narrower space than the space covered by the mobile terminal 100, it is difficult to establish a seamless view environment.

When the distance between the subject 10 and the rear camera 121b is sufficiently large, the size of the subject 10 in the rear image is smaller than the size of the actual subject 10, as in the example shown in FIG. . In this case, if a portion corresponding to the space hidden by the mobile terminal 100 is extracted and displayed in the rear image acquired through the rear camera 121b, a seamless viewing environment can be constructed.

Thus, in the embodiments described below, it is assumed that the distance between the subject 10 and the rear camera 121b is sufficiently large to be suitable for creating a seamless view environment.

Based on the above description, the mobile terminal 100 according to the present invention for creating a seamless view environment will be described in detail.

4 is a flowchart illustrating an operation of the mobile terminal 100 according to the present invention. Referring to FIG. 4, the controller 180 may acquire information about a user staring at the display unit 151 through a front image obtained through the front camera 121a (S401). Specifically, the controller 180 may acquire at least one of the information on the distance to the user gazing at the display unit 151 and the information of the user's gaze gazing at the display unit 151 through the front image .

In order to obtain the distance information and the sight line information from the front image, the front camera 121a may include one set of a three-dimensional camera and a two-dimensional camera. In this case, the control unit 180 acquires the distance information from the user based on the three-dimensional image of the user, which is grasped through the three-dimensional image obtained through the three-dimensional camera, Eye line information on the position of the eye line can be obtained based on the position of the eye of the user obtained by applying the eyeball recognition algorithm. At this time, the controller 180 may increase the accuracy of the position of the eye by analyzing the shape of the mobile terminal 100 formed on the eye or the shape of the light emitted from the mobile terminal 100 reflected from the eye.

However, the front camera 121a does not necessarily include a set of cameras composed of a three-dimensional camera and a two-dimensional camera. The control unit 180 may acquire both the position information and the sight line information from the three-dimensional image obtained through the three-dimensional camera.

A stereoscopic vision system, a structured optical system, or a time-of-flight (ToF) system can be applied to the 3D camera.

5 is a diagram exemplifying the distance information and sight line information. As in the example shown in FIG. 5 (a), the distance information may be a distance between the mobile terminal 100 and the user. The control unit 180 may analyze the front image obtained through the front camera 121a and measure the distance to the user (specifically, the user's face) gazing at the display unit 151. [

As shown in FIG. 5B, the line of sight information includes the degree of the left-right deflection of the user's eyes, the degree of the upward / downward deflection of the user's eyes around the mobile terminal 100, And the like.

When the user information is obtained from the front camera 121a, the control unit 180 can adjust the area to be output through the display unit 151 of the rear image acquired through the rear camera 121b, based on the user information (S402). Specifically, the control unit 180 may adjust the size of the area to be output through the display unit 151 based on the distance information, and may adjust the position of the area to be output through the display unit 151 based on the line of sight information. Thereafter, the control unit 180 may control a portion corresponding to the output region of the obtained output region to be output through the display unit 151 (S403). 6 and 7, an example in which the area to be output through the display unit 151 is adjusted will be described in detail.

FIGS. 6A and 6B are diagrams illustrating examples in which the size of an area to be displayed is adjusted according to distance information.

As the distance between the user and the mobile terminal 100 is closer to that in the example shown in Figs. 6A and 6B, the area on the space covered by the mobile terminal 100 gradually increases. Accordingly, as the distance between the mobile terminal 100 and the user decreases, the control unit 180 determines whether the distance from the back camera 121b to the back camera 121b It is possible to control the size of the area to be outputted through the middle display unit 151 to increase.

To this end, the memory 160 may store data mapping the distance between the user and the mobile terminal 100 and the size of the area to be displayed. The controller 180 may determine the size of the area to be displayed according to the size of the area to be mapped, which is mapped to the distance from the user, from the data stored in the memory 160.

If the user is gazing at the mobile terminal 100 from the front, it is possible to set an area to display based on the center of the rear image. However, when the user views the mobile terminal 100 from the side, it is necessary to adjust the position of the area to be displayed. A detailed description thereof will be made with reference to Figs. 7A and 7B.

FIGS. 7A and 7B are diagrams illustrating examples in which the position of an area to be displayed is adjusted according to visual information.

As in the example shown in Figs. 7A and 7B, when the user gazes at the mobile terminal 100 from the front and when the user stare at the mobile terminal 100 from the side, They are different. Assuming that the mobile terminal 100 covers the center of the subject 10, as in the example shown in FIG. 7A (a), when the user gazes at the mobile terminal 100 from the front, When gazing at the mobile terminal 100 from the right side, the mobile terminal 100 covers the left part of the subject 10, as in the example shown in FIG.

Accordingly, the control unit 180 can control the movement of the position of the area to be displayed in the opposite direction to the position of the user's line of sight. For example, if the user's gaze is located on the right side (i.e., the user gazes at the mobile terminal 100 on the right side), the position of the area to be displayed, (I.e., when the user gazes at the mobile terminal 100 on the left side), as in the example shown in FIG. 7B (b) The position can be set to the right of the center of the rear image.

Although not shown, the position of the area to be displayed may be set below the center of the rear image if the user's gaze is located at the upper side (i.e., the user gazes at the mobile terminal 100 from top to bottom) The user can set the position of the area to be displayed above the center of the rear image if the user's eyes are below (i.e., the user gazes at the mobile terminal 100 from bottom to top).

That is, when the center of the rear image is used as a reference, the controller 180 controls the position of the area to be displayed in the opposite direction to the position of the user's eyes.

To this end, the memory 160 may store data mapping the position of the line of sight and the position of the area to be displayed. The control unit 180 may set an area to be displayed according to the position of the area to be displayed mapped to the position of the line of sight from the data stored in the memory 160. [

Although not shown, the controller 180 may rotate an area to be displayed according to the degree of rotation of the eye relative to the mobile terminal 100. For example, if the user's gaze of the user staring at the display unit 151 is in a rotated state, control may be performed such that an area to be displayed is rotated in the same direction (or opposite direction) as the direction in which the user's gaze is rotated.

If the mobile terminal 100 according to the present invention is placed on the dashboard of the vehicle to inform the driver of navigation information, the road image corresponding to the space area covered by the mobile terminal 100 is displayed on the mobile terminal 100, . At this time, the controller 180 may control the traffic information or the navigation information to be displayed on the displayed road image.

For example, FIG. 8 shows an example in which traffic information or navigation information on a road image is displayed.

If the mobile terminal 100 is placed on the dashboard, a part of the rear image corresponding to the area on the space covered by the mobile terminal 100 may be output through the display unit 151. [ Accordingly, if the current road image is outputted through the display unit 151 as in the example shown in FIG. 8 (a), the control unit 180 determines whether the current road image is displayed in the example shown in FIG. 8 (b) Similarly, it is possible to control the display of traffic information such as route guidance for reaching the destination on the road image, navigation information such as the current speed of the vehicle, and the current road situation and the speed limit of the photographed road.

The conventional mobile terminal 100 displays navigation information or traffic information on an image generated in accordance with the running terrain. However, the mobile terminal 100 according to the present invention may display the current road image navigation information or traffic information It is possible to recognize navigation information or traffic information more intuitively.

The user information obtained through the front camera 121a is not used only for establishing a seamless view environment. The control unit 180 may adjust the output mode (e.g., landscape mode or portrait mode) of the display unit 151 based on the user information obtained through the front camera 121a.

The conventional mobile terminal 100 detects the tilting of the mobile terminal 100 through a sensor (for example, an acceleration sensor or a gyro sensor), and when it is determined that the mobile terminal 100 is placed in the horizontal direction, And sets the display unit 151 to the portrait mode when it is determined that the mobile terminal 100 is placed in the vertical direction.

If the user lays down the mobile terminal 100 in the vertical direction and the user lays the mobile terminal 100 in the vertical direction, the user may use the mobile terminal 100 in the vertical direction, whereas the sensing unit may detect that the mobile terminal 100 is tilted in the horizontal direction The output mode of the display unit 151 will be changed to the landscape mode.

In order to eliminate such a sense of divergence, the mobile terminal 100 according to the present invention may control the output mode of the display unit 151 to be changed according to the degree of rotation of the user's line of sight.

For example, FIGS. 9A and 9B show an example in which the output mode of the display unit 151 is changed.

If it is determined that the mobile terminal 100 is placed in the vertical direction and the user's gaze is also gazing at the mobile terminal 100 placed in the vertical direction, as in the example shown in FIG. 9A, 180 may set the display unit 151 to the portrait mode. Alternatively, as in the example shown in FIG. 9A, the mobile terminal 100 may be placed in the longitudinal direction, but the user's gaze may move the mobile terminal 100 in the longitudinal direction to a predetermined angle (for example, 90 degrees ), The controller 180 can set the display unit 151 to the landscape mode.

As another example, if it is judged that the mobile terminal 100 is placed in the horizontal direction and the user's gaze is gazing straight at the mobile terminal 100 lying in the horizontal direction as in the example shown in (a) of FIG. 9 , The control unit 180 can set the display unit 151 to the landscape mode. Alternatively, as in the example shown in FIG. 9B, the mobile terminal 100 may be laid out in the lateral direction, but the user's eyes may be positioned at a predetermined angle (for example, 90 degrees The control unit 180 can set the display unit 151 to the portrait mode.

That is, in the mobile terminal 100 according to the present invention, if the user's line of sight is not rotated by a predetermined angle or more while the mobile terminal 100 is placed in the vertical direction, And sets the display unit 151 to the portrait mode. If the user's line of sight is rotated by a predetermined angle or more, the user rotates the mobile terminal 100 placed in the vertical direction by 90 degrees It is possible to set the display unit 151 to the landscape mode.

Likewise, in the mobile terminal 100 according to the present invention, if the user's line of sight is not rotated by a predetermined angle or more while the mobile terminal 100 is lying in the horizontal direction, The display unit 151 is set to the landscape mode. If the user's line of sight is rotated by a predetermined angle or more, the user rotates the mobile terminal 100 in the horizontal direction by 90 degrees The display unit 151 can be set to the portrait mode.

At this time, the control unit 180 may determine whether the mobile terminal 100 lies in the horizontal direction or the vertical direction based on the sensing signal of the sensing unit 140. [

According to one embodiment of the present invention, the above-described method (operation flow diagram) can be implemented as a code that can be read by a processor on a medium on which the program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

The above-described mobile terminal 100 is not limited in the configuration and method of the above-described embodiments, but the embodiments may be modified such that all or some of the embodiments are selectively combined .

121: rear camera
121 ': Front camera
151:
160: Memory
180:

Claims (11)

A display unit;
A rear camera for acquiring a backward image (hereinafter, referred to as a rear image) of the mobile terminal;
A front camera for acquiring an image of a front direction of the mobile terminal (hereinafter referred to as a 'front image'); And
Acquiring at least one of a distance between a user who is using the mobile terminal and a position of a line of sight from the front image obtained through the front camera,
A control unit for adjusting an output area to be outputted through the display unit of the rear image based on at least one of the distance of the distance and the position of the line of sight,
. The method according to claim 1,
Wherein the control unit adjusts the size of the output area in the rear image based on the separation distance. 3. The method of claim 2,
Wherein the control unit controls the size of the output area in the rear image to decrease as the separation distance increases. The method according to claim 1,
Wherein the control unit adjusts the position of the output area in the rear image based on the position of the line of sight. 5. The method of claim 4,
Wherein the controller adjusts the position of the output area in a direction opposite to the position of the line of sight. The method according to claim 1,
Wherein the front camera comprises a set of cameras for acquiring three-dimensional images and two-dimensional images. The method according to claim 6,
Wherein the controller measures the distance from the three-dimensional image and measures the position of the line of sight from the two-dimensional image. The method according to claim 1,
When the output image is a road image,
Wherein the controller controls to output at least one of navigation information and traffic information on the road image. Acquiring an image (hereinafter, referred to as 'front image') in the front direction of the mobile terminal from the front camera;
Obtaining at least one of a distance between a user who is using the mobile terminal and a position of a line of sight from the front image; And
Adjusting an output area to be output through the display unit among images (hereinafter, referred to as 'rear view images') of the back direction of the mobile terminal obtained from the rear camera based on at least one of the distance and the position of the line of sight
And transmitting the control information to the mobile terminal. 10. The method of claim 9,
Wherein the size of the output area in the rear image is adjusted according to the separation distance. 10. The method of claim 9,
Wherein the position of the output area in the rear image is adjusted according to the position of the line of sight.

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