KR20060124162A - Method for composing image using dmb broadcasting screen in mobile phone and mobile phone incorporating the same - Google Patents

Abstract

An image synthesis method using a DMB(Digital Multimedia Broadcasting) picture in a mobile communication terminal and the mobile communication terminal for embodying the same are provided to interwork with the DMB picture and synthesize a photo by capturing the DMB picture, extracting an object which exists in a photographed photo, and synthesizing the extracted object in the DMB picture. A DMB receiving unit(110) receives a DMB signal. A camera unit(170) reads an object, and processes the object as an image. A capture unit(180) captures a received DMB picture. A memory unit(140) temporarily stores the DMB picture captured through the capture unit(180) in a buffer. A control unit(150) extracts the object to be synthesized from the photo photographed by using the camera unit(170). If a position of the object to be synthesized to the DMB picture captured through the capture unit(180) is designated from a user, the control unit(150) synthesizes the extracted object to the designated position of the captured picture.

Description

Image compositing method using DMB broadcasting screen in mobile communication terminal and mobile communication terminal implementing same {Method for composing image using DMB broadcasting screen in mobile phone and mobile phone incorporating the same}

1 is a block diagram showing the internal structure of a mobile communication terminal according to the present invention.

2 is a flowchart illustrating an image compositing process using a DMB broadcasting screen according to the present invention.

3A to 3C are screen examples according to the present invention.

The present invention relates to an image composition method using a DMB broadcasting screen in a mobile communication terminal and a mobile communication terminal implementing the same. More particularly, the present invention captures a received DMB broadcasting screen and selects a picture to be synthesized on the captured screen. An image synthesis method using a DMB broadcasting screen in a mobile communication terminal and extracting a subject to be synthesized in the selected picture upon receiving the received image, and a mobile communication terminal implementing the same will be.

Today's mobile communication terminals are becoming a necessity of life due to the convenience and simplicity of the portable devices, and are intended to provide convenience to users by providing various additional functions as well as simple voice calls.

Also, in recent years, high-quality communication services have been implemented according to the development of communication technology, and it is also possible to receive broadcasts by receiving satellite broadcasting, satellite DMB, and terrestrial DMB signals through a mobile communication terminal. You can also take pictures. However, in the case of taking a picture using a mobile communication terminal, only a function of adding a pattern or a special effect to a simply taken picture is implemented, but a function of synthesizing with a DMB broadcast screen has not yet been implemented. The need is raised.

The present invention has been proposed by such a necessity, by capturing a DMB broadcast screen to make a captured DMB broadcast screen as a background screen, extracting a subject in the photographed picture, and synthesizing the DMB broadcast screen to link the DMB broadcast screen. An object of the present invention is to provide a method for synthesizing images using a DMB broadcasting screen in a mobile communication terminal for synthesizing pictures and a mobile communication terminal implementing the same.

In order to achieve the above object, the present invention provides a first step of capturing a received DMB broadcast screen when a user selects a synthesis function while receiving a DMB broadcast, and when the user selects a picture to be synthesized on the captured screen. A second step of extracting a subject to be synthesized in the selected photo, a third step of specifying a position of a subject to be synthesized on the captured screen, and a fourth step of synthesizing the extracted subject at a designated position of the captured screen It includes.

Further, in the first step, when the user selects a synthesis function while receiving the DMB broadcast, the mobile communication terminal selects one of the first and second captured DMB broadcast screens from the first and second steps of capturing a plurality of DMB broadcast screens. It may be made by including the first to second steps.

In addition, the captured DMB broadcast screen is temporarily stored in a buffer, and the extraction of a subject to be synthesized is preferably extracted using a chroma key. In addition, the present invention is characterized by filtering the boundary of the extracted subject to the captured screen before combining the extracted subject in the designated position of the captured screen of the fourth step.

In addition, the mobile communication terminal according to the present invention includes a DMB broadcast receiving unit for receiving a DMB broadcast signal, a camera unit for reading a subject and processing it as an image, a capture unit for capturing a received DMB broadcast screen, and the capture unit. The memory unit temporarily stores the captured DMB broadcast screen in a buffer, and controls to extract the subject to be synthesized in the photograph taken using the camera unit, and the position of the subject to be synthesized on the captured DMB broadcast screen through the capture unit. And a control unit configured to synthesize the extracted subject at a designated position of the captured screen when the user is designated by the user.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the internal structure of a mobile communication terminal according to the present invention.

As shown in FIG. 1, the mobile communication terminal according to the present invention includes a DMB broadcast receiving unit 110, an input unit 120, a display unit 130, a memory unit 140, a controller 150, a wireless circuit unit 160, The camera unit 170, the capture unit 180, and the audio converter 190 are provided.

The DMB broadcast receiving unit 110 receives a DMB broadcast signal received from a DMB broadcast transmitting station for multimedia content such as video, audio, and data.

The input unit 120 may use various elements such as a keypad and a touch screen, and is used when a user selects a desired function or inputs information.

The display unit 130 displays the state and operation process of the mobile communication terminal.

The memory unit 140 stores programs and data necessary for the operation and status of the mobile communication terminal or the control of the controller 150, and various programs such as erasable programmable read only memory (EPROM), static random access memory (SRAM), and flash memory. The device can be used.

The controller 150 controls the overall state and operation of the mobile communication terminal and may be made of a microprocessor or a digital signal processor (DSP). In particular, in the present invention, if the user selects a picture to be synthesized on the captured screen, the controller 150 controls to extract a subject to be synthesized within the selected picture, and the user positions the position of the subject to be synthesized on the captured DMB broadcast screen. If specified, controls to synthesize the extracted subject in the designated position of the captured screen.

The wireless circuit unit 160 is a transmission / reception circuit for transmitting and receiving voice and control information with a base station wirelessly. Receives a call signal sent by the caller's mobile communication terminal through the antenna and transmits it to the controller 150 or transmits data stored in the memory unit 140 to the receiver's mobile communication terminal through the antenna. .

 The camera unit 170 is responsible for reading a subject and processing it as an image.

The capturer 180 captures the DMB broadcast screen received through the DMB broadcast receiver 110.

The audio converter 190 processes the voice signal of the user input through the microphone MIC in a form for transmitting through the wireless circuit unit 160, and the voice signal of the call counterpart input through the wireless circuit unit 160 or the like. The controller 150 processes various audio signals generated by the controller 150 into a signal that can be output from the speaker SPK.

Next, with reference to Figure 2 will be described the image synthesis process using the DMB broadcast screen according to the present invention.

2 is a flowchart illustrating an image compositing process using a DMB broadcasting screen according to the present invention.

When a user selects a synthesis function while watching a DMB broadcast using a mobile communication terminal capable of receiving DMB broadcasts (S201), the mobile communication terminal first captures the received DMB broadcast screen (S203).

That is, for example, if a user selects a synthesis function when a favorite entertainer appears on the screen or a screen with a favorite background is output while watching a DMB broadcast through a mobile communication terminal capable of receiving DMB broadcasting, the mobile communication terminal may be selected. First, the DMB broadcast screen being captured is captured at the moment the compositing function is selected.

In addition, when capturing the received DMB broadcast screen, it is desirable to capture a plurality of DMB broadcast screens so that the user selects one of them. That is, for example, it captures about 6 frames of the DMB broadcast screen received at 30fps per second and allows the user to select one of them. An example of the screen when the user selects one of the screens captured in this manner is shown in FIG. 3A.

In addition, when the user selects one of the plurality of captured DMB broadcast screens in this manner, the mobile communication terminal may temporarily store it in a buffer. After capturing the received DMB broadcast screen and temporarily storing it in a buffer, when the user selects a picture to be synthesized on the captured screen (S205), the mobile communication terminal extracts a subject to be synthesized from the selected picture (S207). ).

When selecting a picture to be synthesized in the captured screen of step 205, it is preferable to select the picture to be synthesized by driving the camera, and it is also possible to select a picture to be synthesized from the pictures stored in the mobile communication terminal. 3B is a screen example showing an example of photos to be synthesized.

In addition, a method of extracting a subject to be synthesized from the selected photographs is preferably extracted using a chroma key, and another subject may be extracted. In other words, it only needs to be a technique for extracting a subject from a background screen, and there is no limitation on a method for realizing the subject. In other words, in the screen example of FIG. 3B, only the person who is the subject needs to be extracted.

After extracting the subject to be synthesized in this manner, the terminal receives a user's position of the subject to be synthesized on the captured screen (S209). When specifying the position of the subject to be synthesized on the captured screen, for example, the direction key can be used. That is, the area indicated by the pointer is designated as the position of the subject by using the direction key as a pointer.

When the position of the subject is designated in this manner, the terminal sets the captured screen as a background and fits the extracted subject to the designated position. In this case, when the subject is fitted to the captured screen, the brightness may be different from the boundary of the subject, so that the boundary is not displayed and is filtered to make it look natural (S211).

After the filtering is performed, the extracted subject is synthesized at the designated position of the captured screen (S213). An example of such a synthesized screen is shown in FIG. 3C.

As mentioned above, although this invention was demonstrated using the Example, these Examples are illustrative and not restrictive. Those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit of the invention.

As described above, according to the present invention, there is provided an image composition method using a DMB broadcast screen in a mobile communication terminal and a mobile communication terminal implementing the same. The present invention captures the DMB broadcast screen, extracts the subject in the photographed picture, and synthesizes the extracted subject on the DMB broadcast screen, so that the user can synthesize the celebrity or special screen accessible through the broadcast screen with the photographed picture. It can give an effect.

Claims (10)

A first step of capturing the received DMB broadcasting screen by the mobile terminal when the user selects a synthesis function while receiving the DMB broadcasting; A second step of extracting a subject to be synthesized from the selected picture when the user selects a picture to be synthesized on the captured screen; A third step of designating a position of a subject to be synthesized on the captured screen; Fourth step of composing the extracted subject in the designated position of the captured screen Image synthesis method using the DMB broadcast screen in the mobile communication terminal comprising a. The method of claim 1 wherein the first step is When the user selects the synthesis function while receiving DMB broadcasting, the mobile communication terminal captures a plurality of DMB broadcasting screens in steps 1-1; Steps 1-2, allowing the user to select one of the captured multiple DMB images Image synthesis method using a DMB broadcast screen in a mobile communication terminal comprising a. The method of claim 1, The captured DMB broadcasting screen of the first step is temporarily stored in a buffer, characterized in that the image synthesis method using the DMB broadcasting screen in the mobile terminal. The method of claim 1, The image synthesis method using the DMB broadcasting screen in the mobile communication terminal, characterized in that the selection of the picture to be synthesized in the second step is made by driving the camera to take a picture. The method of claim 1, Extracting the subject to be synthesized in the second step is extracted using a chroma key image synthesis method using the DMB broadcasting screen in the mobile communication terminal. The method of claim 1, A method of synthesizing an image using a DMB broadcasting screen in a mobile communication terminal, characterized in that the boundary of the extracted subject with respect to the captured screen is filtered before synthesizing the extracted subject at the designated position of the captured screen in the fourth step. A DMB broadcast receiver for receiving a DMB broadcast signal; A camera unit which reads a subject and processes it into an image; A capture unit for capturing the received DMB broadcast screen; A memory unit for temporarily storing a DMB broadcast screen captured by the capture unit in a buffer; The subject to be synthesized is controlled to be extracted from the photographed image by using the camera unit, and when the position of the subject to be synthesized on the DMB broadcasting screen captured by the capture unit is designated by the user, the extracted subject is located at the designated position of the captured screen. Control to synthesize Mobile communication terminal having a. The method of claim 7, wherein The capture unit is a mobile communication terminal, characterized in that for capturing a plurality of DMB broadcast screen to the user to select one of them. The method of claim 7, wherein And the controller controls to extract a subject to be synthesized using a chroma key in the captured picture. The method of claim 7, wherein And the controller controls to filter the boundary of the extracted subject with respect to the captured screen before composing the extracted subject at a designated position of the captured screen.

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