KR20140094926A - Mobile terminal and operation method thereof - Google Patents

Abstract

The present invention relates to a mobile terminal, and more specifically, to a mobile terminal which can generate tagging information when recording images with one of the mounted cameras by using images recorded with a different camera and an operation method thereof. The mobile terminal according to an embodiment of the present invention includes: a first camera; a second camera; and a control unit which records a first image by using the first camera, records a second image by using the second camera, and generates the tagging information for a first image based on the second mage. The tagging information of the first image is the second image itself.

Description

[0001] The present invention relates to a mobile terminal and an operation method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a mobile terminal, and more particularly, to a mobile terminal capable of generating a tagging information by using a photograph taken by another camera, And a driving method thereof.

2. Description of the Related Art As a mobile terminal such as a notebook computer, a mobile phone, or a smart phone has diversified functions, a mobile terminal has a variety of functions such as photographing, video shooting, music or video file playback, And is implemented in the form of a multimedia player.

In order to support and enhance the functionality of such a mobile terminal, it may be considered to improve the structural and / or software portion of the terminal. Recently, a variety of terminals including a mobile terminal provide a complex and various functions, and the menu structure is also becoming complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a method and apparatus for photographing a photograph using one camera of a plurality of cameras, And a method of driving the mobile terminal.

The technical objects to be achieved by the present invention are not limited to the technical matters mentioned above, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

According to an aspect of the present invention, there is provided a mobile terminal including a first camera and a second camera; And a control unit that photographs a first image using the first camera, simultaneously captures a second image using the second camera, and generates tagging information for the first image based on the second image, . ≪ / RTI >

The first camera may be provided on one of a front portion and a rear portion of the mobile terminal and the second camera may be provided on another one of a front portion and a rear portion of the mobile terminal.

The tagging information for the first image may be the second image itself. The tagging information for the first image may be generated based on an image analysis result for the second image. For example, the tagging information for the first image may include an image photographer's face recognition result based on the second image.

The mobile terminal includes: a memory for storing a face image set to be used for face recognition; And a wireless communication unit capable of performing wireless communication with an external device that stores face images set for use in face recognition. At this time, the controller may perform face recognition of the image photographer by comparing the face of the image photographer included in the second image with the face image stored in the memory or the external device.

The mobile terminal may further include: a memory for storing a face image set to be used for face recognition; And a wireless communication unit capable of performing wireless communication with an external device that stores face images set for use in face recognition. At this time, when there is no face image matching the face of the image photographer included in the second image among the face images stored in the memory, the control unit controls the face image of the image photographer based on the face image stored in the external apparatus Recognition can be performed.

The tagging information for the first image may include facial expression analysis and / or emotion analysis results of the image photographer based on the second image.

According to an aspect of the present invention, there is provided a method of driving a marginal marginal, comprising: acquiring a first image using a first camera and simultaneously acquiring a second image using a second camera; ; Generating tagging information for the first image based on the second image; And matching the generated tagging information with the first image and storing the tagging information.

The first camera may be provided on one of a front portion and a rear portion of the mobile terminal, and the second camera may be provided on another one of a front portion and a rear portion of the mobile terminal.

The tagging information for the first image may be the second image itself and may be generated based on an image analysis result for the second image. For example, the tagging information for the first image may include a face recognition result of the image photographer included in the second image. As another example, the tagging information for the first image may include facial expression analysis and / or emotion analysis results of the image photographer based on the second image.

The method of driving a mobile terminal according to an embodiment of the present invention can be implemented by executing a computer program for implementing the mobile terminal driving method stored in a computer readable recording medium.

The mobile terminal according to the present invention can provide a function of matching the information obtained at the time of shooting with the image through the camera to the captured image.

In addition, the mobile terminal according to the present invention may provide a function of adding information desired by a user to an object included in the photographed image.

In addition, the mobile terminal according to the present invention may perform a search function when an object included in the stored image is selected by the user.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2 is a perspective view of a mobile terminal according to an embodiment of the present invention.
3 is a rear perspective view of the mobile terminal shown in FIG.
4 is a flowchart illustrating an example of a method for driving a mobile terminal according to the present invention.
FIG. 5 shows an example in which the captured image is matched with the captured image according to the method of driving the mobile terminal shown in FIG.
6 is a flowchart showing another example of a method for driving a mobile terminal according to the present invention.
FIG. 7 illustrates a process of tagging tagging information in an image photographed through the rear camera 121 'according to the method of driving the mobile terminal shown in FIG.
8 shows an example of a block diagram of the control unit of the mobile terminal according to the present invention.
9 is a flowchart showing another example of the method of driving a mobile terminal according to the present invention.
10 is a view for explaining an example in which face recognition of an image photographer is performed in a mobile terminal according to the present invention.

The foregoing objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals designate like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. 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.

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device, have. However, the scope of the present invention is not limited thereto.

1 is a block diagram of a mobile terminal 100 according to an embodiment of the present invention. 1, the mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, A memory 160, an interface unit 170, a control unit 180, a power supply unit 190, and the like. 1 are not essential, the mobile terminal 100 may have more or less components than those shown in FIG.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) Only Digital Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems that provide broadcast signals as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives a radio signal to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data in response to a voice call signal, a video call call signal, or a text / multimedia message transmission / reception.

The wireless Internet module 113 refers to a module for wireless Internet access, and the wireless Internet module 113 can be embedded in the mobile terminal 100 or externally. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), LTE (Long Term Evolution) .

The short-range communication module 114 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short distance communication technology.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. The location information module 115 may obtain location information using a global navigation satellite system (GNSS). Here, the Global Positioning System (GNSS) is a term used to describe the radionavigation satellite systems in which certain types of radionavigation receivers orbiting the Earth are transmitting reference signals that can determine their position near the surface or ground surface . The Global Positioning System (GNSS) includes Global Positioning System (GPS) in the United States, Galileo in Europe, GLONASS (Global Orbiting Navigational Satelite System) in Russia, COMPASS in China and Japan QZSS (Quasi-Zenith Satellite System), which is operated by the Ministry of Land, Infrastructure and Transport.

As a representative example of the GNSS, the location information module 115 may be a Global Position System (GPS) module. The GPS module calculates information on a distance (distance) from three or more satellites to a point (object), information on a time when the distance information is measured, and then applies a trigonometric method to the calculated distance information, Dimensional position information according to latitude, longitude, and altitude with respect to a point (object) in the three-dimensional space. Further, a method of calculating position and time information using three satellites and correcting the error of the calculated position and time information using another satellite is also used. The GPS module continuously calculates the current position in real time, and calculates velocity information using the current position.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the movement of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, And senses the current state of the terminal 100 to generate a sensing signal for controlling the operation of the mobile terminal 100. The sensing signal may be transmitted to the controller 180 so that the controller 180 may perform a specific function.

In FIG. 1, only an attitude sensor 1410 capable of sensing the attitude of the mobile terminal 100 is shown. However, the sensing unit 140 may include a touch sensor for sensing whether a user touches the mobile terminal 100, A vibration sensor for detecting the generated vibration, a gyro sensor for detecting the rotation of the mobile terminal 100, an acceleration sensor, a geomagnetic sensor, etc. However, the scope of the present invention is not limited thereto .

For example, when the mobile terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, it may be responsible for a sensing function related to whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. Meanwhile, the sensing unit 140 may include a proximity sensor.

The output unit 150 may include a display unit 151, an acoustic output unit 152, an alarm unit 153, and a haptic module 154, for example, for generating an output related to visual, auditory, have.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display 3D display).

Some of these displays may be transparent or light transmissive so that they can be seen through. This may be referred to as a transparent display. A typical example of the transparent display is a transparent LCD or the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another, or may be disposed integrally with one another, and may be disposed on different surfaces, respectively.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

A proximity sensor may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen that is wrapped by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor.

And to detect the proximity of the cursor with the change of the electric field along the proximity of the cursor when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The audio output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 152 outputs an acoustic signal related to a function (e.g., a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. [ The audio output unit 152 may include a receiver, a speaker, a buzzer, and the like. Also, the sound output unit 152 may output sound through the earphone jack 116. The user can connect the earphone to the earphone jack 116 to hear the sound output.

The alarm unit 153 may output a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may also be output through the display unit 151 or the audio output unit 152.

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 154 is vibration. The intensity and pattern of the vibration generated by the hit module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may be configured to perform various functions such as an effect of stimulation by a pin arrangement vertically moving with respect to a contact skin surface, an effect of stimulation by air spraying force or suction force through a jet opening or a suction opening, A variety of tactile effects such as an effect of stimulation through contact of an electrode, an effect of stimulation by an electrostatic force, and an effect of reproducing a cold sensation using a heat absorbing or exothermic element can be generated.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to feel the tactile effect through the muscles of the user's finger or arm. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The memory 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM , An optical disc, and the like. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or receives power from the external device to transfer the data to each component in the mobile terminal 100 or to transmit data in the mobile terminal 100 to an external device.

For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The interface unit 170 may include a card slot on which the card type user identification module can be mounted. Then, the user identification module may be connected to the mobile terminal 100 through the card slot. At this time, a plurality of user identification modules may be connected to the interface unit 170.

When the mobile terminal 100 is connected to an external cradle, the interface unit 170 may be a path through which power from the cradle is supplied to the mobile terminal 100, or various commands A signal may be a path through which the signal is transmitted to the mobile terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The control unit 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The power supply unit 190 may receive external power and internal power under the control of the controller 180 to supply power required for operation of the respective components.

Under the control of the control unit 180, the power supply unit 190 receives external power and internal power, and supplies power necessary for operation of the respective components.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing functions. In some cases, And may be implemented by the control unit 180.

According to a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that perform at least one function or operation. The software code may be implemented by a software application written in a suitable programming language. In addition, the software codes may be stored in the memory 160 and executed by the control unit 180. [

2 is a perspective view of a mobile terminal 100 according to an embodiment of the present invention.

The disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The display unit 151, the sound output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, the interface 170, and the like may be disposed in the front body 101 have.

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 152 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132, the interface 170, and the like are disposed on the side surfaces of the front case 101 and the rear case 102.

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131 and 132.

The operation units 131 and 132 may be collectively referred to as a manipulating portion and may be employed in any manner as long as the user operates in a tactile manner.

The contents input by the operation units 131 and 132 can be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 To the touch recognition mode of the touch screen.

3 is a rear perspective view of the mobile terminal 100 shown in Fig.

Referring to FIG. 3, a camera 121 'may be further mounted on the rear surface of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2), and may be a camera having different pixels from the camera 121.

For example, the camera 121 may have a low pixel so that the face of the user can be photographed and transmitted to the other party in case of a video call or the like, and the camera 121 ' It is preferable to have a large number of pixels. The cameras 121 and 121 'may be installed in the terminal body such that they can be rotated or popped up.

A flash 123 and a mirror 124 are additionally disposed adjacent to the camera 121 '. The flash 123 illuminates the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '. Hereinafter, the camera 121 'for photographing the front surface of the mobile terminal 100 is referred to as a front camera, and the camera 121 for photographing the rear surface of the mobile terminal 100 is referred to as a rear camera.

An acoustic output 152 'may be additionally disposed on the rear surface of the terminal body. The sound output unit 152 'may implement the stereo function together with the sound output unit 152 (see FIG. 2A), and may be used for the implementation of the speakerphone mode during a call.

In addition to the antenna for a call or the like, a broadcast signal reception antenna 124 may be additionally disposed on the side of the terminal body. The antenna 124 constituting a part of the broadcast receiving module 111 (see FIG. 1) may be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the mobile terminal 100 is mounted on the terminal body. The power supply unit 190 may be built in the terminal body or may be detachable from the outside of the terminal body.

The rear case 102 may further include a touch pad 135 for sensing a touch. The touch pad 135 may also be of a light transmission type like the display unit 151. [ In this case, if the display unit 151 is configured to output time information on both sides, the time information can be recognized through the touch pad 135 as well. The information output on both sides may be all controlled by the touch pad 135. [ Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may be disposed on the rear case 102.

The touch pad 135 operates in correlation with the display portion 151 of the front case 101. [ The touch pad 135 may be disposed parallel to the rear of the display unit 151. The touch pad 135 may have a size equal to or smaller than that of the display unit 151.

In the foregoing, the configuration of the mobile terminal 100 according to the present invention has been described with reference to FIG. 1 to FIG. Hereinafter, the tagging information generating function and / or operation of the photographed photograph of the mobile terminal 100 according to the embodiment of the present invention will be described in detail with reference to FIG. 4 to FIG.

4 is a flowchart illustrating an example of a method for driving a mobile terminal according to the present invention. Hereinafter, the image acquisition method will be described with reference to necessary drawings.

When the user photographs the first image using the first camera among the plurality of cameras mounted on the mobile terminal 100, the controller 180 controls the second camera of the plurality of cameras And the second image is photographed (S100).

Here, the first image may be a moving image or a still image. The same is true for the second image. The first camera may be a rear camera provided on the rear side of the mobile terminal 100 and the second camera may be a front side camera provided on the front side of the mobile terminal 100. [ However, the scope of the present invention is not limited thereto.

Then, the controller 180 generates tagging information for the first image based on the second image (S110), and stores the generated tagging information in the memory 160 by matching the tagging information with the first image (S120). Here, the tagging information may be the second image itself. In addition, the tagging information may be generated based on an image analysis result of the second image.

For example, the tagging information may include a face recognition result of an image photographer included in the second image. In addition, the tagging information may include a facial expression analysis result or an emotion analysis result for the image photographer included in the second image. Meanwhile, the face image, which is compared with the face of the image photographer for face recognition, may be stored in the memory 160 in advance. In addition, a face image, which is compared with the face of the image photographer for face recognition, may be previously stored in an external device connected to the mobile terminal 100 via a wireless network.

FIG. 5 shows an example in which the captured image is matched with the captured image according to the method of driving the mobile terminal shown in FIG.

Some images 151A are tagged with date information. However, in addition to the date information, the image 151B1 of the image photographer photographed by the front camera 121 is tagged in another image 151B photographed by the rear camera 121 '.

In addition to the date information, the other image 151C captured by the rear camera 121 'includes the name 151C1 of the image photographer, which is the result of performing face recognition on the image photographer image photographed by the front camera 121, This is tagged.

In addition to the date information, another image 151D captured by the rear camera includes the name of the image photographer and the facial expression information (the result of the facial recognition and facial expression analysis on the image photographer image photographed by the front camera 121) 151D1) are tagged. The facial expression analysis result may be provided by emoticons.

6 is a flowchart showing another example of a method for driving a mobile terminal according to the present invention. Hereinafter, the image acquisition method will be described with reference to necessary drawings.

When the user operates the camera photographing button, the control unit 180 photographs the first image with the rear camera 121 'and photographs the second image using the front camera 121 (S200). The second image may include a face of the image photographer.

Then, the control unit 180 recognizes the second image, performs face recognition of the image photographer, and performs facial expression analysis of the image photographer (S210). Here, the face image compared with the face of the image photographer included in the second image may be stored in the memory 160 of the mobile terminal 100 or may be stored in the memory of the mobile terminal 100, Or may be stored in an external device connected via a network.

Then, the first image is stored in the memory 160 using the face recognition result and the facial expression analysis result as the tagging information for the first image (S220).

7 illustrates a process of tagging tagging information on an image photographed through the rear camera 121 'according to the mobile terminal driving method shown in FIG.

7 (a) shows that the user shoots the shoes laid on the desk using the rear camera 121 '. At this time, the mobile terminal 100 photographs the face of the image photographer through the front camera 121 at the same time as the image pickup through the rear camera 121 '.

7 (b), the controller 180 of the mobile terminal 100 performs face recognition by comparing the photographed image of the photographer with a previously stored face image , And performs facial expression analysis on the image photographer.

FIG. 7C shows that the tagging information 151E including the name of the photographing photographer and the photographer's facial expression 151E, which is the information of the face recognition result and the information generated by the facial expression analysis, is tagged in the shoe image.

8 shows an example of a block diagram of the control unit 180 of the mobile terminal 100 according to the present invention. 9 is a flowchart showing another example of the method of driving a mobile terminal according to the present invention.

Referring to FIG. 8, the control unit 180 includes a feature point extracting unit 181, a face recognizing unit 182, and a facial expression analyzing unit 183. 8, the control unit 180 includes only an image tagging information generating function of the mobile terminal 100 according to the present invention.

First, the feature point extracting unit 181 receives the photographed image from the front camera 121 (S300), and extracts the feature point from the received image (S310). This may mean extracting the photographer's face object from the received image. The extracted feature points are output to the face recognition unit 182 and the facial expression analysis unit 183.

Then, the face recognition unit 183 performs face recognition of the image photographer through matching with the face image stored in the memory 160 of the extracted feature point (S320). Then, the facial expression analyzer 183 analyzes facial expressions of the image photographer based on the extracted feature points (S330).

Then, the control unit 180 tags and stores the face recognition result and the facial expression analysis result on the image photographed by the rear camera 121 '(S340). Meanwhile, the face recognition and facial expression analysis method shown in FIG. 9 is only an example of the method of driving the mobile terminal 100 according to the present invention, and the scope of the present invention is not limited thereto.

10 is a view for explaining an example in which face recognition of an image photographer is performed in the mobile terminal 100 according to the present invention.

10A shows that the control unit 180 of the mobile terminal 100 performs face recognition for the image photographer preferentially based on the face image stored in the memory 160. FIG. As a result, if the face recognition fails, the controller 180 determines whether or not the face recognition based on the face image stored in the external device connected to the mobile terminal 100 via the wireless communication network, as shown in FIGS. 10B and 10C The face recognition of the photographer can be performed.

Referring to FIG. 10 (b), the mobile terminal 100 may perform face recognition on the photographer based on the face image stored in the server 200 connected through the mobile communication network. Referring to FIG. 10 (c), the mobile terminal 100 displays a face image for the image photographer based on the face image stored in the PC 300 or the notebook 400 connected via a local area wireless communication network such as Wi-Fi or Bluetooth. Can be performed.

Each of the mobile terminal driving methods according to the present invention may be implemented in a form of a program that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program recorded on the medium may be those specially designed and constructed for the present invention or may be those known to those skilled in the computer software.

Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of programs include high-level language code that can be executed by a computer using an interpreter or the like, as well as machine code as produced by a compiler. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: mobile terminal 110: wireless communication unit
116: input unit 120: A / V input unit
121: (front) camera 121 ': rear camera
130: user input unit 140: sensing unit
150: output unit 151: display unit
152: Acoustic output unit 160: Memory
170: interface unit 180: control unit
190: Power supply unit 200: Server
300: PC 400: Notebook

Claims (14)

A first camera and a second camera; And
A control unit that photographs a first image using the first camera and simultaneously captures a second image using the second camera and generates tagging information for the first image based on the second image / RTI > The camera according to claim 1,
The mobile terminal according to claim 1,
Wherein the second camera comprises:
Wherein the mobile terminal is provided on one of a front portion and a rear portion of the mobile terminal. 2. The method of claim 1, wherein the tagging information for the first image comprises:
And the second image is the second image itself. 2. The method of claim 1, wherein the tagging information for the first image comprises:
And the second image is generated based on an image analysis result of the second image. 5. The method of claim 4, wherein the tagging information for the first image comprises:
And a face recognition result of the image photographer based on the second image. The mobile terminal of claim 1,
A memory for storing a face image set for use in face recognition; And
And a wireless communication unit capable of performing wireless communication with an external device that stores a face image set for use in face recognition,
Wherein,
Wherein the face recognition unit performs the face recognition of the image photographer by comparing the face of the image photographer included in the second image with the face image stored in the memory or the external apparatus. The mobile terminal of claim 1,
A memory for storing a face image set for use in face recognition; And
And a wireless communication unit capable of performing wireless communication with an external device that stores a face image set for use in face recognition,
Wherein,
And recognizing the face of the image photographer based on the face image stored in the external device when there is no face image matching the face of the image photographer included in the second image among the face images stored in the memory . 5. The method of claim 4, wherein the tagging information for the first image comprises:
And an emotion analysis result of the image photographer based on the second image. Acquiring a first image using a first camera and simultaneously acquiring a second image using a second camera;
Generating tagging information for the first image based on the second image; And
And matching the generated tagging information with the first image and storing the tagging information. 10. The camera according to claim 9,
The mobile terminal according to claim 1,
Wherein the second camera comprises:
Wherein the mobile terminal is provided at one of a front side and a rear side of the mobile terminal. 10. The method of claim 9, wherein the tagging information for the first image comprises:
Wherein the second image is the second image itself. 10. The method of claim 9, wherein the tagging information for the first image comprises:
And the second image is generated based on an image analysis result of the second image. 13. The method of claim 12, wherein the tagging information for the first image comprises:
And a face recognition result of the image photographer included in the second image. 13. The method of claim 12, wherein the tagging information for the first image comprises:
And a facial expression analysis and / or an emotion analysis result of the image photographer based on the second image.

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