KR101587099B1 - Terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a terminal for recognizing a face of a specific person and photographing the face of the specific person so that the face of the specific person can be an optimal face image, and a control method thereof. The terminal comprises a camera, a display module Recognizing a face of a person included in the image, detecting a predetermined face of a predetermined one of the faces, automatically detecting an image of the face using the profiling information of the optimal face image And a control unit for correcting the image.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal for recognizing a face of a specific person and photographing the face of the specific person so as to be an optimal face image and a control method thereof.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

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. Generally, in the related art, it is possible to perform photographing using a camera built in a terminal, but it has not been possible to automatically correct an image of a specific person in the photographed image or photograph it so as to be an optimal facial image at the time of photographing.

The present invention provides a terminal for recognizing a face of a specific person and photographing the face so that the face of the person can be an optimal face image, and a control method thereof.

The present invention provides a terminal capable of automatically detecting a face of a specific person at the time of shooting, and a control method thereof.

In addition, the present invention provides a terminal that recognizes a face of a specific person and corrects the face of the person to be an optimal face image, and a control method thereof.

The present invention also provides a terminal for recognizing a face of a specific person and automatically photographing the face when the face of the person becomes an optimal face image, and a control method thereof.

According to an aspect of the present invention, there is provided an image processing apparatus including a camera, a display module for outputting an image input through the camera, a display module for recognizing a face of the characters included in the image, And automatically corrects the face image by using the profiling information of the stored optimal face image.

According to another aspect of the present invention, there is provided a method for detecting a face of a person who is displayed on a screen in a camera mode, detecting whether there is a predetermined person among the recognized faces, Is automatically corrected using the profiling information of the optimal facial image stored in advance.

The terminal related to at least one embodiment of the present invention configured as described above recognizes a face of a specific person and corrects the face of the person to be an optimal face image or automatically picks up an optimal face image So that the convenience of the user is improved.

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 in this specification 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), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented.

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).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H) And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems 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 radio signals 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 depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

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 a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

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. [ Two or more cameras 121 may be provided depending on the use environment.

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 current state 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, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. 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. It is also possible to sense 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 141.

The output unit 150 is for generating output related to the visual, auditory or tactile sense and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154 .

The display unit 151 displays (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 image communication mode or the photographing mode, the captured or / and received image, UI, or GUI is displayed.

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and 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 each other, or may be disposed on different surfaces.

(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.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded 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 pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

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 module 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 module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs 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 be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153. [

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 include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic 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 allow the user to feel the tactile effect through the muscular sensation of the 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 A disk, and / or an optical disk. 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 supplies power to each component in the mobile terminal 100 or transmits data to the 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 identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

When the mobile terminal 100 is connected to an external cradle, the interface unit may be a path through which power from the cradle is supplied to the mobile terminal 100, or various command signals input by the user to the cradle may be transmitted It can be a passage to be transmitted to the 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 controller 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 controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 190 receives external power and internal power under the control of the controller 180 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 a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

2A is a perspective view of an example of a mobile terminal or a mobile terminal according to the present invention.

The disclosed mobile terminal 100 has 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. [ Various 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 151 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 and the interface 170 may be 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 portable 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 inputted by the first or second operation unit 131 or 132 may 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 outputted from the sound output unit 152, 151 to the touch recognition mode, and the like.

FIG. 2B is a rear perspective view of the portable terminal shown in FIG. 2A.

Referring to FIG. 2B, 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. 2A), 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 so as to be rotatable or pop-upable.

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 '.

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 talking and the like, a broadcast signal reception antenna 116 may be additionally disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiving module 111 (see FIG. 1), can be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the portable 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 as well.

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.

Hereinafter, a related operation of the display unit 151 and the touch pad 135 will be described with reference to FIGS. 3A and 3B.

3A and 3B are front views of a portable terminal for explaining an operation state of the portable terminal according to the present invention.

Various types of time information can be displayed on the display unit 151. [ These pieces of information can be displayed in the form of letters, numbers, symbols, graphics, or icons.

At least one of the letters, numbers, symbols, graphics, or icons may be displayed in a predetermined arrangement for inputting such information, thereby being implemented as a keypad. Such a keypad may be called a so-called " soft key ".

FIG. 3A shows a touch input to a soft key through a front surface of a terminal body.

The display unit 151 may operate as an entire area or may be divided into a plurality of areas and operated. In the latter case, the plurality of areas can be configured to operate in association with each other.

For example, an output window 151a and an input window 151b are displayed on the upper and lower portions of the display unit 151, respectively. The output window 151a and the input window 151b are areas allocated for outputting or inputting information, respectively. In the input window 151b, a soft key 151c in which a number for inputting a telephone number or the like is displayed is output. When the soft key 151c is touched, a number corresponding to the touched soft key is displayed on the output window 151a. When the first operation unit 131 is operated, call connection to the telephone number displayed on the output window 151a is attempted.

FIG. 3B shows the input of a touch applied to the soft key through the rear surface of the terminal body. FIG. 3A shows a case where the terminal body is vertically arranged, and FIG. 3B shows a case where the terminal body is arranged horizontally. The display unit 151 may be configured to convert the output screen according to the arrangement direction of the terminal body.

3B shows that the text input mode is activated in the portable terminal. The display unit 151 displays an output window 151a 'and an input window 151b'. In the input window 151b ', a plurality of soft keys 151c' displayed with at least one of letters, symbols, and numbers may be arranged. The soft keys 151c 'may be arranged in the form of a QWERTY key.

When the soft keys 151c 'are touched through the touch pad 135 (see FIG. 2B), characters, numbers, symbols corresponding to the touched soft keys are displayed on the output window 151a'. As described above, the touch input through the touch pad 135 is advantageous in that the soft key 151c 'can not be blocked by the finger when the touch is input, compared with the touch input through the display unit 151. [ In the case where the display unit 151 and the touch pad 135 are formed to be transparent, the fingers located on the rear side of the terminal body can be visually confirmed, thereby enabling a more accurate touch input.

The display unit 151 or the touch pad 135 may be configured to receive a touch input by scrolling, as well as the input method described in the above embodiments. The user can move a cursor or a pointer located on an object displayed on the display unit 151, for example, an icon or the like, by scrolling the display unit 151 or the touch pad 135. [ Further, when the finger is moved on the display portion 151 or the touch pad 135, the path along which the finger moves may be visually displayed on the display portion 151. [ This will be useful for editing the image displayed on the display unit 151. [

One function of the terminal may be executed in response to a case where the display unit 151 (touch screen) and the touch pad 135 are touched together within a predetermined time range. In the case of being touched together, there may be a case where the user clamps the terminal body using the thumb and index finger. The one function may be activation or deactivation of the display unit 151 or the touch pad 135, for example.

The proximity sensor 141 described with reference to Fig. 1 will be described in more detail with reference to Fig.

4 is a conceptual diagram for explaining the proximity depth of the proximity sensor.

As shown in FIG. 4, when a pointer such as a user's finger, a pen, or the like approaches the touch screen, the proximity sensor 141 disposed in or near the touch screen senses the proximity sensor and outputs a proximity signal.

The proximity sensor 141 may be configured to output different proximity signals according to the distance between the proximity-touched pointer and the touch screen (hereinafter referred to as "proximity depth").

In FIG. 4, for example, a cross-section of a touch screen having proximity sensors capable of sensing three proximity depths is illustrated. Of course, proximity sensors that detect less than three or more than four proximity depths are also possible.

Specifically, when the pointer is completely in contact with the touch screen (d0), it is recognized as a contact touch. If the pointer is located on the touch screen at a distance less than the distance d1, it is recognized as a proximity touch of the first proximity depth. If the pointer is located on the touch screen at a distance d1 or less and less than the distance d2, the pointer is recognized as a proximity touch of the second proximity depth. If the pointer is located on the touch screen at a distance d2 or more and less than the distance d3, it is recognized as a proximity touch of the third proximity depth. If the pointer is located at a distance d3 or more on the touch screen, it is recognized that the proximity touch is released.

Accordingly, the controller 180 can recognize the proximity touch as various input signals according to the proximity depth and proximity position of the pointer, and perform various operation control according to the various input signals.

Hereinafter, embodiments related to a control method that can be implemented in the terminal configured as above will be described with reference to the accompanying drawings. The following embodiments can be used alone or in combination with each other. In addition, the embodiments described below may be used in combination with the above-described user interface (UI).

The present invention relates to a technique for recognizing a face of a subject during photographing using a terminal and photographing the face so that the face image of the subject can be optimized. In the present invention, the face recognition function can be applied not only to a still image such as a photograph, but also to a moving image such as a video call. This is because a plurality of still image frames are collected and reproduced consecutively.

In addition, the face recognition function may be applied to an image to be photographed at present, or may be applied to a previously stored image. Further, the face recognition function can also operate for a photograph in which one person is photographed and a group photo in which a plurality of persons are photographed. Therefore, in this embodiment, a method of using the currently photographed image is described for the sake of convenience, but a previously stored image may also be used. Further, the face recognition function may be executed automatically in the camera mode or may be manually performed by a menu operation of the user.

5 is a flowchart illustrating a control method of a terminal according to the present invention.

In accordance with the user's menu operation, the terminal enters the camera mode (S101).

The controller 180 of the terminal outputs a preview screen through the display module 151 (S102). The preview screen is a screen for displaying an image of a subject input to the camera 121 in real time.

The controller 180 recognizes the face of the subject in the image output on the preview screen (S103). The face recognition function must be activated in order to recognize the face of the subject. The control unit 180 can identify a person who is photographed by the subject using the face recognition function. That is, the face feature may be detected to determine whether the person is the same person as the person who was photographed before.

The control unit 180 may be configured to recognize the face by using information on the overall contour of the face, skin tone information and skin information such as eye, nose, mouth, eyebrow, , Position, angle, shape).

Hereinafter, the feature information for the face recognition may be referred to as facial pattern information or profiling information. The control unit 180 detects whether there is a predetermined person among the objects displayed on the preview screen using the feature information (S104). Hereinafter, it is assumed that the specific person is a user's own face stored in the terminal.

If a predetermined person is detected on the preview screen, face pattern information or profiling information of the detected person is detected (S105). Then, the detected profiling information of the specific person is compared with the profiling information of the specific person that has been stored (S106).

Hereinafter, for convenience of explanation, the profiling information of the specific person stored in advance is referred to as optimum profiling information. The optimal profiling information is profiling information of an optimal face image of a specific person. The optimal face image is a face image that the user himself / herself judges to be the best view, and the optimal face image may be edited to make it look better.

Then, the profiling information of the detected face image of the specific person is corrected using the optimum profiling information (S107). That is, the face image of the specific person outputted on the preview screen is corrected so as to be the optimal face image. The correction using the optimum profiling information is performed automatically. The correction may be executed in real time when the preview screen is output, or may be set to be executed when the shooting button is input.

Meanwhile, the control unit 180 can automatically capture not only the automatic correction of the face image but also the optimal face image (S108). For example, when the attitude of a specific person outputted on the preview screen reaches the same attitude (for example, face direction) within a tolerance range with a predetermined optimum image, the photographing can be automatically performed. The correction of the facial image can be performed more easily when the posture becomes the same as the optimal image.

6 is a diagram showing an example of a preview screen of a terminal according to the present invention.

As described above, the control unit 180 recognizes and displays the face of the object on the preview screen when the image is output. Here, the controller 180 recognizes and displays all the faces 301 to 303 output on the preview screen 300. The recognized face can be displayed using a frame of a predetermined specific shape.

The face recognition function may detect only the face contour information according to the purpose of using the face information, or may detect various characteristic information related to the face as described above.

In addition, the feature information related to the detected face using the face recognition function can be managed in a separate database together with the image of the face. Further, the database can additionally manage the person information (e.g., name, telephone number, mail address, and relationship with the user) corresponding to each face.

FIG. 7 is an exemplary diagram showing a screen in which a face of a specific person is recognized and displayed according to the present invention.

The controller 180 can distinguish a specific character from other characters using the detected face characteristic. That is, it is possible to determine whether or not the person is the same person as the person previously stored in the memory using the feature of the face.

Accordingly, when the face recognition function is executed, the present invention can detect and display only a predetermined specific character (e.g., the user himself / herself) 301 among the characters displayed on the preview screen (or the image fetched from the memory) have. That is, according to the option selected by the user, it is possible to display the faces of all the persons, or to detect and display only predetermined specific persons.

The control unit 180 detects whether a predetermined person is included in the preview screen (or the image extracted from the memory) when photographing (or moving) the image, and when the specific person is detected, And if the specific person is not detected, nothing can be displayed.

In order to detect the specific person, feature information related to the specific person must be stored in the memory 160. [

FIG. 8 is an exemplary diagram illustrating feature information detected for face recognition in the present invention.

The user selects an optimal face image among the face images containing the face image itself, analyzes the pattern of the optimal face image, and detects the feature information. The feature information may be detected from a previously stored image or from a newly captured image in real time. The optimal face image is a face image determined by the user as the best view among the face images stored in the memory.

The control unit 180 may be a feature information for recognizing the face and may include information on the overall contour information of the face, skin color, skin tone (= skin information), and face components such as eyes, nose, mouth, eyebrows, (E.g., length, position, angle, shape) 310 for each feature. The detected feature information is stored in the specific database 311.

The optimal face image can be edited by the user.

For example, you can remove dirt from your face, modify your face type, insert dimples, or brighten dark skin tones. As described above, the work environment in which the face is edited can be configured in the terminal. Alternatively, the edited image may be stored in a memory and the feature information may be detected. When the face image is edited as described above, the feature information of the face image is also changed.

9 is a flowchart illustrating a process of storing feature information of an optimal facial image in the present invention.

It is assumed that the optimal face image is selected by the user among the previously stored face images. When the optimal face image is selected as described above (S201), the controller 180 analyzes the face pattern. That is, the feature information of the face is detected (S202). Then, the feature information for each of the detected faces is stored in the specific database 320 (S203).

If the face image is fetched and corrected or edited, the controller 180 detects the modified image or the edited final image and the feature information of the final image, and stores the feature information in the specific database 311.

The optimal face image may be selected from two or more. For example, as shown in Fig. 10, the optimum face image photographed differently in the direction of the face, the optimum face image photographed with different hairstyles, the optimal face image photographed with the glasses, the optimum face photographed without makeup The optimal face image can be selected according to various situations such as an image.

As described above, in the specific database 311, optimal face images 321 to 322 according to various situations and feature information of each optimal face image are stored in advance. Accordingly, the controller 180 can correct the face of a specific person to be photographed, which is currently photographed, in an optimal state by using the feature information of the optimal face image having the situation most similar to the current photographed situation. The feature information of each optimal face image may be separately managed for each optimal face image.

FIG. 10 is an exemplary view showing an optimal face image set in various situations according to the present invention.

As shown, the specific database 311 may store the optimal face images 331 and the feature information 332 of each optimal face image in various situations. For example, an optimal face image photographed with different face directions, an optimal face image photographed with different hairstyles, an optimal face image photographed with glasses, and an optimal face image photographed without makeup are stored . In addition to the above-described optimal face image, the optimal face image in various situations can be stored.

The controller 180 detects and separately manages feature information on the optimal face image set in the various situations.

Then, when a preset specific face (e.g., user's face) is detected on the preview screen, the database 311 detects an optimal face image corresponding to the specific face. Then, the feature information of the specific person is corrected using the feature information of the optimal face image. When the feature information of the face is corrected as described above, the image of the face is corrected. As described above, the feature information of the face is corrected so that the image of the face displayed on the preview screen is also changed. That is, the optimal face image is corrected to the optimal face image.

As described above, after the face of a specific person displayed on the preview screen is corrected to the optimum state using the optimal face image, the face image corrected to the optimum state can be automatically photographed.

11 is a flowchart illustrating a method of automatically capturing an image of a specific person according to the present invention.

When the preview screen is output as described above (S301), the controller 180 determines whether a predetermined person (e.g., the user himself / herself) is included in the screen (S302). If the predetermined character is included in the determination, the feature information of the specific character is detected (S303).

Then, the photographing posture of the specific person is determined using the feature information (S304). Then, the photographed posture of the determined specific person is compared with the photographed posture of the previously stored arbitrary optimum face image. That is, it is determined whether the determined photographing posture of the specific person is the same as the photographing posture of the previously stored arbitrary optimal face image (S305).

For this determination, the controller 180 can detect whether the optimal face image photographed in the photographing posture similar to the currently detected photographing posture is stored in the terminal. For example, the user tries to shoot with his / her posture in a direction in which the shooting can be most optimized when taking a picture. That is, the user rotates the face so that the face orientation becomes the optimal photographing posture known by the user, and seeks the posture. Accordingly, the control unit 180 detects whether the user's photographing posture is similar to the photographing posture of the stored optimal face image.

If the user attains an attitude similar to any one of the best stored face images (= the same attitude within an error range) as described above, the control unit 180 can automatically perform shooting (S306).

Here, the controller 180 may automatically correct the image using the above-described method of correcting the facial image before photographing the photograph. That is, when the preview screen is output before the photograph is taken, the user's own face image outputted on the preview screen can be corrected using the pre-stored optimal face image. Then, the face image corrected to the optimum state as described above can be photographed.

In the foregoing, preferred embodiments of the present invention have been described with reference to the accompanying drawings.

Here, the terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, but should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention;

FIG. 2A is a front perspective view of a portable terminal according to an embodiment of the present invention; FIG.

FIG. 2B is a rear perspective view of a portable terminal according to an embodiment of the present invention; FIG.

3A and 3B are front views of a portable terminal for explaining an operation state of the portable terminal according to the present invention.

4 is a conceptual diagram for explaining the proximity depth of the proximity sensor;

5 is a flowchart for explaining a control method of a terminal according to the present invention.

6 is an exemplary view showing a preview screen of a terminal according to the present invention;

FIG. 7 is an exemplary view showing a screen in which a face of a specific person is recognized and displayed according to the present invention. FIG.

FIG. 8 is an exemplary view showing feature information detected for face recognition in the present invention; FIG.

FIG. 9 is a flowchart illustrating a process of storing feature information of an optimal facial image in the present invention. FIG.

FIG. 10 is an exemplary view showing an optimal face image set in various situations according to the present invention; FIG.

11 is a flowchart illustrating a method of automatically capturing an image of a specific person according to the present invention.

Claims (12)

A camera; A display module for outputting an image input through the camera; Detecting a face image of a specific person among at least one face image included in the image and correcting the image so that the face image of the specific person is corrected based on the profiling information of the specific person previously stored, And a controller for photographing the corrected image based on the comparison result. Wherein, Wherein the image is photographed based on that the photographing posture of the face image of the specific person corresponds to the photographing posture of the face image of the specific person previously stored. delete delete The apparatus of claim 1, Detecting a face image of the specific person based on the feature information of the at least one face image, And detects the profiling information of the specific person based on the feature information of the face image of the specific person. The apparatus of claim 1, And corrects the face image of the specific person using the feature information of the face image of the specific person. delete Detecting a face image of a specific person among at least one face image included in an image input through a camera; Correcting the image so that the face image of the specific person is corrected based on the profiling information of the specific person previously stored; And photographing the corrected image on the basis of the correction being performed, Wherein the photographing step photographs the image based on that the photographing posture of the face image of the specific person corresponds to the photographing posture of the face image of the specific person previously stored. delete 8. The method of claim 7, Detecting a face image of the specific person using the feature information of the at least one face image, Wherein the profile information of the specific person is detected based on the feature information of the face image of the specific person. 8. The method of claim 7, And correcting the face image of the specific person using the feature information of the face image of the specific person. The method as claimed in claim 7, further comprising, when at least one face image is recognized in the image, displaying an indicator indicating that the at least one face image has been recognized on the image . 12. The method of claim 11, Wherein the indicator is displayed on all of the recognized at least one face image or displayed only in the face image of the specific person among the recognized at least one face image.

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