KR20130083547A - Mobile terminal and method for forming 3d image thereof - Google Patents

Abstract

PURPOSE: A mobile terminal and a 3D image generating method thereof are provided to reduce manufacturing costs of the mobile terminal by using the port of a low-resolution camera which is the same as the port of a high-resolution camera. CONSTITUTION: A control unit of a mobile terminal matches the imaging condition of a high-resolution camera with the imaging condition of a low-resolution camera (S410). The control unit receives an image which is photographed from the high-resolution camera and the low-resolution camera and performs up-scaling of a high-resolution image suitable for the pixel number of the high-resolution image (S420). The control unit calculates binocular parallax by using the high-resolution image and the up-scaled low-resolution image (S450). [Reference numerals] (AA) Start; (BB) End; (S410) Match an imaging condition of a high-resolution camera; (S420) Perform image up scaling of a low-resolution camera; (S430) Correct unconformity elements; (S440) Auto-convergence; (S450) Calculate binocular parallax; (S460) Shift the high-resolution camera

Description

MOBILE TERMINAL AND METHOD FOR FORMING 3D IMAGE THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal and a 3D image capturing method thereof, and to a method for generating 3D images in a mobile terminal having a high pixel and a low pixel camera.

Recently, mobile terminals such as Appbooks, laptops, mobile phones, and the like, provide various communication services such as voice communication through cellular communication networks and data communication through wireless or data communication networks, and provide various user convenience functions such as camera functions. have.

As the mobile terminal is more versatile, camera functions are required to have higher-quality, higher-quality cameras, and in recent years, demand for 3D image capturing is required as consumer demands for 3D content arise.

However, since two cameras are required for 3D image capturing, when both cameras are provided as high-pixel cameras, the unit price of the mobile terminal increases, so that 3D image capturing functions can be provided only to high-end products.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile terminal and a method of generating a 3D image using the two cameras of a high pixel and a low pixel employed in a conventional mobile terminal.

According to an aspect of the present invention, there is provided a method of generating a 3D image of a mobile terminal having a high pixel camera and a low pixel camera, comprising: matching imaging conditions of the high pixel camera and the low pixel camera; Receiving images captured by the high pixel camera and the low pixel camera and upscaling the low pixel image to the number of pixels of the high pixel image; And calculating binocular parallax using the high pixel camera image and the upscaled low pixel camera image.

The method may further include reconstructing the low pixel camera image by moving the high pixel camera image according to the low pixel camera image based on the binocular parallax.

The method may further include creating a 3D depth map based on the binocular parallax.

And reconstructing a 3D image using the 3D depth map and the high pixel camera image.

Meanwhile, the high resolution camera and the low resolution camera may be mutually synchronized such that the low resolution camera image is received during a time interval in which the high resolution camera image is not received.

In addition, the high resolution camera and the low resolution camera may be operated in a fixed frame for synchronization.

On the other hand, the mobile terminal according to the present invention, a high-pixel camera and a low-pixel camera disposed in parallel with the optical axis on the same plane as the high pixel camera; A multimedia module for processing image data received from the cameras; and controlling the cameras and the multimedia module to match imaging conditions of the high pixel camera and the low pixel camera and to match the high pixel camera received at the multimedia module. The multimedia module to upscale the low pixel image among the images captured by the low pixel camera according to the number of pixels of the high pixel image, and calculate a binocular disparity using the high pixel camera image and the upscaled low pixel camera image It includes a control unit for controlling.

Here, the low pixel camera may be installed on a barrel rotatable at least 180 degrees.

The high resolution camera and the low resolution camera may be mutually synchronized such that the low resolution camera image is received during a time interval in which the high resolution camera image is not received.

The high resolution camera and the low resolution camera may be operated with a fixed frame for synchronization.

According to a mobile terminal and a method of generating a 3D image thereof according to the present invention, one of the two cameras employed in the mobile terminal is adopted as a low pixel camera and the same port as that of the high pixel camera is used, thereby lowering the production cost of the mobile terminal, thereby reducing 3D content. A multifunctional mobile terminal can be widely distributed at low cost to consumers who want to use it.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2 is a view for explaining a connection structure of a camera according to an embodiment of the present invention.
3 is a view for explaining a structure for 3D image pickup of the camera according to an embodiment of the present invention.
4 is a flowchart illustrating a 3D image capturing method of a mobile terminal according to an embodiment of the present invention.
5 is a flowchart illustrating a 3D image capturing method of a mobile terminal according to another embodiment of the present invention.
6 is a diagram for describing in detail a 3D image capturing method of a mobile terminal according to embodiments of the present invention.
7 is a view for explaining each camera image generated by the 3D imaging method of the mobile terminal according to embodiments of the present invention.

The above objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. It is to be understood, however, that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. 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. In addition, the numbers (eg, first, second, etc.) used in the description process of the present specification are merely identification symbols for distinguishing one component from another component.

Hereinafter, a mobile terminal to which the present invention is applied will be described in more detail with reference to the accompanying drawings. The present invention mainly describes a case where it is applied to a mobile terminal by way of example, but the present invention is not limited thereto, and may be applied to a case where a secure communication is required for specific information while using a non-secure communication protocol in various terminals.

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), and navigation. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

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 unit 160, An interface unit 170, a control unit 180, a power supply unit 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 a broadcast signal 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 a DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of a DVBH (Digital Video BroadcastHandheld).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems. In particular, the broadcast receiving module 111 may be a digital multimedia broadcasting broadcasting (DMBT), a digital multimedia broadcasting satellite (DMBS), a media forward link only (MediaFLO), a digital video broadcasting ), And ISDBT (Integrated Services Digital Broadcast Terrestrial). 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 unit 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 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 (WiFi), 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 the short distance communication technology.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. A typical example of the location information module is a GPS (Global Position System) module. According to the current technology, the GPS module 115 calculates information on a distance (distance) from three or more satellites to one point (entity), information on the time when the distance information is measured, , Three-dimensional position information according to latitude, longitude, and altitude of one point (individual) in one hour can be calculated. 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 115 continues to calculate the current position in real time and uses it to calculate speed information.

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 call mode or the photographing mode. The processed image frame can be displayed on the display module 151. [

The image frame processed by the camera 121 may be stored in the memory unit 160 or may be 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 pressure / capacitance), 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 may 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 an attitude sensor 141 and / or a proximity sensor.

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

The display module 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 module 151 is selected from a liquid crystal display, a thin film transistor liquid crystal display, an organic light emitting diode, a flexible display, and a 3D display. It may include at least one.

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 module 151 may also be of a light transmission type. With this structure, the user can see the object located behind the terminal body through the area occupied by the display module 151 of the terminal body.

There may be two or more display modules 151 according to the implementation form of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display modules may be spaced apart or integrally arranged on one surface, and may be disposed on different surfaces, respectively.

When the display module 151 and a sensor for detecting a touch motion (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter, abbreviated as “touch screen”), the display module 151 may output an output device. 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 module 151 or a capacitance generated in a specific portion of the display module 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 module 151 is touched or the like.

Referring to FIG. 1, a proximity sensor may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is enclosed 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 allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." 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 unit 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 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 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 audio signal may also be output through the display module 151 or the audio output module 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 vibration generated by the haptic 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 unit 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 unit 160 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory unit 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) At least one of a random access memory (RAM), a static random access memory (SRAM), a read only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read- Lt; / RTI > type of storage medium. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory unit 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 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. Various command signals or power input from the cradle may be operated as signals 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 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 an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

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, microcontrollers, microprocessors, and electrical units for performing functions. In some cases such embodiments may be implemented using a controller 180 < / RTI >

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. Also, the software codes may be stored in the memory unit 160 and executed by the control unit 180. [

2 and 3 are views for explaining in detail the connection structure of the camera of the present invention and the structure for picking up the 3D image.

Referring to FIG. 2, a general camera structure includes a main camera 121a and a sub camera 121b.

The main camera 121a and the auxiliary camera 121b are connected to the controller 180, in particular the multimedia module 181, using one camera port in common.

Therefore, unlike a structure in which two cameras are composed of high-resolution high-quality cameras and each camera is connected to a multimedia module through a separate camera port in a mobile terminal designed for conventional 3D, it can perform 3D image capturing at low cost. It becomes possible.

However, the main camera 121a of the low pixel and the sub-camera 121b of the high pixel have to implement the same angle of view of the camera even though their number of pixels is different.

However, the main camera 121a is generally installed at the rear of the same mobile terminal as the main display module 151, not at the front thereof, and the auxiliary camera 121b is generally installed at the front of the same mobile terminal as the main display module 151. to be.

Therefore, referring to FIG. 3, the auxiliary camera 121b is preferably installed on the barrel-shaped structure so that the auxiliary camera 121b is installed at the front portion of the mobile terminal 100 and rotates 180 degrees.

That is, when rotating the structure (barrel) installed the auxiliary camera 121b located in the front is rotated to the rear thereof is located on the same surface as the main camera 121a.

In addition, when the barrel is rotated as described above, when the main camera 121a and the sub-camera 121b are positioned on the same plane, the optical axes of the two cameras are arranged parallel to each other, and are implemented to be spaced a predetermined distance to implement the 3D camera.

4 is a flowchart illustrating a 3D image capturing method of a mobile terminal according to an embodiment of the present invention.

Referring to FIG. 4, in order to capture a 3D image using the main camera 121a and the sub-camera 121b, the user first rotates the barrel on which the main camera 121a is installed, on the same plane as the sub-camera 121b. Position and input a 3D image pickup command through the user input unit 130.

Accordingly, the imaging function of the 3D image is performed, so that the controller 180 first of all the two cameras such as the auto focus (AF), the auto exposure (AE), and the white balance (AWB) of the main camera 121a and the sub-camera 121b. The imaging conditions are matched and an image of the object is imaged (S410).

When the image data of the object photographed from each of the two cameras is input to the multimedia module 181, the controller 180 may convert the image input from the main camera 121a, which is a low pixel camera, to the auxiliary camera 121b image, which is a high pixel camera. The same upscales (S420).

In this case, upscaling is sufficient for the implementation of the embodiment according to the present invention even in a simple manner such that the number of pixels is increased by simply overlapping image data for the same pixel and filling up the insufficient number of pixels.

Subsequently, correction of the mechanical mismatching factor according to the mechanical difference of each camera is performed on the image data photographed from the low pixel camera and the high pixel camera (S430).

The controller 180 performs auto-convergence on the cameras 121a and 121b so that the optical axis is aligned with the converging plane so as to automatically focus the 3D image. It is input to the multimedia module 181 (S440).

 Accordingly, the multimedia module 181 calculates binocular disparity for each block for image data input from the two cameras 121a and 121b (S450).

In this case, the binocular disparity may be calculated for each pixel, but the pixels constituting the image data may be divided into blocks having a predetermined size, and the binocular disparity may be calculated by comparing two image data for each block.

When the binocular disparity is calculated for the two image data, the multimedia module 181 moves the image data captured by the main camera 121a by the calculated binocular disparity according to the image data captured by the auxiliary camera 121b. The image data of the auxiliary camera 121b is restored (S460).

Therefore, since the high pixel image data captured by the main camera 121a, which is a high pixel, is used repeatedly, the high-definition 3D image data can be generated despite the use of the sub-camera 121b, which is a low pixel.

Meanwhile, as described above, according to another embodiment of the present invention, along with a method of generating 3D image data by moving the main camera 121a image and restoring the secondary camera 121b image, a 3D depth map is generated. To generate 3D images.

5 is a flowchart illustrating a 3D image generating method according to another embodiment of the present invention.

When a 3D image capturing command is input through the user input unit 130, the controller 180 controls auto focus (AF), auto exposure (AE), white balance (AWB), etc. of the main camera 121a and the sub-camera 121b. The imaging conditions of the two cameras are matched and an image of the object is imaged (S510).

When the image data of the object photographed from each of the two cameras is input to the multimedia module 181, the controller 180 may convert the image input from the main camera 121a, which is a low pixel camera, to the auxiliary camera 121b image, which is a high pixel camera. The same upscales (S520).

Subsequently, the multimedia module 181 calculates binocular parallax for each block on image data input from the two cameras 121a and 121b (S530).

To this end, the controller 180 performs an auto-convergence that automatically aligns the optical axis with respect to the converging plane for each camera 121a and 121b so as to automatically focus the 3D image. The data is input to the multimedia module 181, and if necessary, correction of the mechanical mismatching factor according to the mechanical difference of each camera is performed on the image data photographed from the low pixel camera and the high pixel camera.

The multimedia module 181 creates a 3D depth map for each element included in the image data captured based on the calculated binocular disparity (S540).

The 3D depth map is prepared by calculating the distance between the camera and each object formed in the image using binocular parallax, and may be prepared using various known programs.

Meanwhile, the 3D camera is generally implemented such that two cameras are connected to the multimedia module 181 through separate camera ports, but the mobile terminal 100 according to the present invention includes the main camera 121a and the auxiliary camera 121b. It has been described that may share one camera port and transmit an image to the multimedia module 181.

Accordingly, a process of transmitting images captured by two cameras to a multimedia module using one camera port will be described.

6 is a view for explaining a data transmission method of the main camera 121a and the auxiliary camera 121b according to the present invention.

Referring to the drawings, each camera alternately shows a section in which actual data is transmitted and a section in which data is not concentrated.

That is, in the case of the high resolution camera which is the main camera 121a, the actual image data is not transmitted in the A period (Blank Period), but the data is transmitted only in the B period (Active Period).

Therefore, the controller 180 has a predetermined period of time before and after the section A, that is, a section of the front section a and a section of the rear section b, the section C of the sub-camera 121b which is the low resolution camera in the section A (Active Period) ).

To this end, the main camera 121a and the sub-camera 121b simultaneously perform a reset and operate in a fixed frame in order to synchronize under the control of the controller 180, and the controller 180 as described above is assisted. It is preferable to adjust the section C for transmitting the image of the camera 121b to be within the section A which is the blank section of the main camera 121a.

FIG. 7 is a view for explaining a 3D image generation process using image data photographed using two high pixel cameras and image data photographed using a high pixel camera and a low pixel camera according to the present invention.

Referring to FIG. 7, a method of creating a binocular disparity in a 3D camera photographed using two cameras of the same high pixel and a method of creating a binocular disparity using a high pixel camera and a low pixel camera according to the present invention may be compared. In the case of the high pixel camera and the low pixel camera of, the binocular disparity is created in the same way as using two high pixel cameras.

In addition, according to the above-described embodiments, since the image captured from the low-pixel camera is used for binocular parallax creation only when reconstructing the actual 3D image, only the image captured from the high-pixel camera is used for reconstructing the actual 3D image. In terms of image quality, there is no difference in the quality of 3D images such as the use of two high-pixel cameras and the resolution thereof.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

100: mobile terminal 110: wireless communication unit
140: sensing unit 151: display module
180:

Claims (10)

A mobile terminal having a high pixel camera and a low pixel camera,
Matching imaging conditions of the high pixel camera and the low pixel camera;
Receiving images captured by the high pixel camera and the low pixel camera and upscaling the low pixel image to the number of pixels of the high pixel image; And
And calculating binocular parallax using the high pixel camera image and the upscaled low pixel camera image.
The method according to claim 1,
Moving the high pixel camera image according to the low pixel camera image based on the binocular parallax, and restoring the low pixel camera image.
The method according to claim 1,
Creating a 3D depth map based on the binocular parallax; further comprising: generating a 3D depth map.
The method of claim 3,
And reconstructing a 3D image using the 3D depth map and the high pixel camera image.
The method according to claim 1,
The high resolution camera and the low resolution camera, 3D image generating method of the mobile terminal, characterized in that the low resolution camera image is mutually synchronized to be received during the time interval when the high resolution camera image is not received.
6. The method of claim 5,
3. The method of claim 3, wherein the high resolution camera and the low resolution camera operate in a fixed frame for synchronization.
A low pixel camera disposed in parallel with the high pixel camera and the high pixel camera such that an optical axis thereof is parallel to the high pixel camera;
A multimedia module for processing image data received from the cameras; and
The cameras and the multimedia module are controlled to match imaging conditions of the high pixel camera and the low pixel camera, and the low pixel image among the images captured from the high pixel camera and the low pixel camera received by the multimedia module. And a controller for upscaling according to the number of pixels of a high pixel image, and controlling the multimedia module to calculate binocular disparity using the high pixel camera image and the upscaled low pixel camera image.
The method of claim 7, wherein
And the low pixel camera is mounted on a barrel rotatable at least 180 degrees.
The method of claim 7, wherein
The high resolution camera and the low resolution camera, the low resolution camera image is a mobile terminal, characterized in that the mutual synchronization to receive during the time interval when the high resolution camera image is not received.
The method of claim 7, wherein
The high resolution camera and the low resolution camera is a 3D image generation method of a mobile terminal, characterized in that for operating in a fixed frame for synchronization.

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