KR20040029751A - Method of compounding background picture and taken picture in wireless telephone having camera - Google Patents

Abstract

PURPOSE: A method for synthesizing a background picture with a photographed picture in a portable terminal having a camera is provided to use a color value of a photographed picture pixel if a bit of a bit mask pixel is 1, and to use a color value of a background picture pixel if the pixel bit of the bit mask is 0, thereby synthesizing a background picture with a photographed picture. CONSTITUTION: A controller senses that a synthetic key is inputted(100). A portable telephone user selects a background picture(101), and selects a photographed picture(102). If the user inputs a cut key through a keypad, the controller senses the cut key(103) and displays a cut frame on the photographed picture(104). If the user selects a cut frame kind, the controller senses the cut frame kind(105) and displays a cut frame shape(106). If the user selects a cut frame, the controller senses the cut frame(107) and displays the selected cut frame on the photographed picture(108). If the user selects a size control function of the cut frame, the controller senses the function(109). The user controls size of the cut frame(110). If the user inputs a confirm key, the controller senses the confirm key(111). If the user inputs a confirm key for completing a setup of the displayed cut frame(115), the controller displays the photographed picture(116). The controller generates the photographed picture as a bit mask, and stores the bit mask(117). The controller synthesizes the photographed picture with the background picture by using the bit mask(200).

Description

METHOOD OF COMPOUNDING BACKGROUND PICTURE AND TAKEN PICTURE IN WIRELESS TELEPHONE HAVING CAMERA}

The present invention relates to a mobile phone having a camera, and more particularly, to a method for synthesizing a picture taken through the mobile phone and an image to be used as a background picture of the taken picture in a mobile phone equipped with the camera.

Currently, users of portable telephones capture various images through portable telephones equipped with cameras. The photographed image is used as a background screen or a photo mail of the mobile phone as it is, or edited through an image editing tool of a personal computer (PC). However, the image captured by the mobile phone equipped with the camera is stored digitally. Therefore, if only a function capable of synthesizing is added to the portable telephone equipped with the camera, image processing such as synthesis and conversion can be easily performed in the portable telephone without using the image editing tool of the personal computer (PC).

Accordingly, an object of the present invention is to provide a method for synthesizing a picture taken through a portable phone equipped with a camera and an image to be used as a background picture of the taken picture.

In the portable telephone having a camera for achieving the above object, a method of synthesizing a background picture and a photographed picture includes selecting a background picture and a photographed picture in a synthesis mode, and pressing the crop key while the photographed picture is displayed. A process of selecting, a process of displaying a cutting frame on the photographed picture when the crop key is selected, and a setting of the cropping frame on the photographed picture, the photographed picture on which the cropping frame is set The pixel of the region is '1' bit and the pixel of the region outside the crop frame is generated with a bit mask of '0' bit; and if the bit of the pixel of the bit mask is '1', the color of the pixel of the photographed picture Value and if the bit of the pixel of the bit mask is '0', the background picture and the photographed picture using the color value of the pixel of the background picture are used. Characterized by the process of synthesizing the gin.

1 is a diagram showing the configuration of a portable telephone according to an embodiment of the present invention.

2 is a flowchart illustrating a process of combining a background screen and a photographed picture in a portable telephone according to an exemplary embodiment of the present invention.

FIG. 3 is a flowchart illustrating a process of combining a background screen and a photographed picture using a bit mask in FIG. 2.

4A and 4E are views for explaining a process of combining a background screen and a photographed picture in FIG. 2;

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

1 is a view showing the configuration of a portable telephone having a camera according to an embodiment of the present invention.

Referring to FIG. 1, referring to FIG. 1, the RF unit 21 performs communication of a portable telephone. The RF unit 21 includes an RF transmitter for upconverting and amplifying a frequency of a transmitted signal, and an RF receiver for low noise amplifying and downconverting a received signal. The data processor 23 includes a transmitter for encoding and modulating the transmitted signal and a receiver for demodulating and decoding the received signal. That is, the data processor 23 may be configured of a modem and a codec CODDEC. The audio processor 25 plays a function of reproducing a received audio signal output from the data processor 23 or transmitting a transmission audio signal generated from a microphone to the data processor 23. The keypad 27 is provided with keys for inputting numeric and text information and function keys for setting various functions. In addition, the keypad 27 may include a synthesis key that can be switched to a synthesis mode according to an embodiment of the present invention, and a crop key that can display a cutting frame for selecting only a desired portion of a mobile phone by a user of the mobile phone. Can be. In addition, the keypad 27 may include keys for selecting a shape of the cutting frame displayed on the taken picture and adjusting the position and size of the cutting frame according to an embodiment of the present invention.

The memory 29 may be composed of program memory and data memories. The program memory stores programs for controlling a general operation of the portable telephone, and the data memory temporarily stores data generated during the execution of the programs. In addition, the memory 29 may store a picture taken by the mobile phone equipped with the camera and images to be used as a background picture of the taken picture according to an embodiment of the present invention. In addition, the memory 29 may store at least one shape of the crop frame displayed on the taken photo, and a program for adjusting the size and position of the crop frame according to an embodiment of the present invention. In addition, the memory 29 may store a bit mask generated under the control of the controller 10 when the cropping frame is set in the taken photo according to the exemplary embodiment of the present invention. The bit mask is stored in the photographed picture in which the crop frame is set by configuring pixels in the crop frame as '1' bits and pixels outside the crop frame as '0' bits.

The controller 10 performs a function of controlling the overall operation of the portable telephone and may include the data processor 23. In addition, the control unit 10 is a composite key is input through the keypad 27 in accordance with an embodiment of the present invention and converts the portable phone into a composite mode, when the crop key is input through the keypad 27 to insert a cutting frame to the photographed picture Control to display. In addition, the control unit 10 may adjust the position and size of the cutting frame through the keypad 27 according to an embodiment of the present invention. In addition, when the cropping frame displayed in the photographed picture is set, the controller 10 may generate a bit mask composed of '0' bits and '1' bits and store the bit mask in the memory 29. According to an embodiment of the present invention, if the bit of the pixel of the bit mask is '1', the color value of the pixel of the photographed picture is used. If the bit of the pixel of the bit mask is '0', the pixel of the background picture is used. Control to synthesize the photographed picture and the background screen using the color value of.

The camera 50 photographs image data and includes a camera sensor that converts the photographed optical signal into an electrical signal. It is assumed here that the camera sensor is a CCD sensor.

The signal processor 60 converts the video signal output from the camera 50 into an image signal. The signal processor 60 may be implemented with a digital signal processor (DSP). The image processor 70 performs a function of generating screen data for displaying an image signal output from the signal processor 60. The image processor 70 transmits an image signal received under the control of the controller 10 to meet the standard of the display unit 80, and also compresses and decompresses the image data.

The display unit 80 displays the image signal output from the image processing unit 70 on the screen, and displays the user data output from the control unit 10. In this case, the display unit 80 may use an LCD. In this case, the display unit 80 may include an LCD controller, a memory capable of storing image data, and an LCD display device. In this case, when the LCD is implemented by using a touch screen method, the keypad 27 and the LCD may be input units.

Looking at the operation of the portable telephone with reference to FIG. 1, when the user performs a dialing operation through the keypad 27 during the call, and sets the dialing mode, the controller 10 detects this and dial information received through the data processor 23. After processing the RF signal through the RF unit 21 to output. Thereafter, when the counter subscriber generates a response signal, the counter subscriber detects this through the RF unit 21 and the data processor 23. Thereafter, a user establishes a voice call path through the audio processor 25 to perform a communication function. In addition, in the incoming mode, the controller 10 detects the incoming mode through the data processor 23 and generates a ring signal through the audio processor 25. Thereafter, when the user responds, the controller 10 detects this, and a voice call path is formed through the audio processor 25 to perform a communication function. In the outgoing and incoming modes, voice communication is described as an example, but a data communication function for communicating packet data and video data may be performed in addition to the voice communication. In addition, when performing a standby mode or text communication, the controller 10 displays text data processed by the data processor 23 on the display 80.

In addition, the portable telephone may perform an operation of capturing a person or an environment and displaying or transmitting the image on a video screen. First, the camera 50 may be mounted on a portable telephone or connected to a predetermined location outside. That is, the camera 50 may be an external camera or an internal camera. The camera 50 may use a charge coupled device (CCD) sensor. The image captured by the camera 50 is converted into an electrical signal by an internal CCD sensor and then applied to the signal processor 60. Then, the signal processor 60 converts the image signal into digital image data and outputs the image signal to the image processor 70.

FIG. 2 is a flowchart illustrating a process of synthesizing a picture taken through a mobile phone and an image to be used as a background of the taken picture according to an embodiment of the present invention, and FIG. 3 illustrates a process of step 200 of FIG. 2. This is a detailed flow chart.

Embodiments of the present invention will now be described in detail with reference to FIGS. 1 and 4.

When the user of the portable telephone inputs the composite key through the keypad 27, the control unit 10 detects this in step 100 and switches the portable telephone to the composite mode. In the state where the portable telephone is switched to the synthesis mode, the user of the portable telephone selects a background picture as shown in FIG. 4A in step 101 and then selects a picture taken by the portable phone as shown in FIG. 4B in step 102. The controller 10 displays the photographed picture as shown in FIG. 4B selected by the user of the portable telephone in step 102 through the display unit 80. In the state where the photographed picture is displayed through the display unit 80, when the user of the portable telephone inputs a cutting key through the keypad 27, the controller 10 detects this in step 103 and proceeds to step 104. In step 104, the controller 10 displays a cutting frame 90 on the taken photo displayed through the display unit 80. The cutting frame 90 displayed in the picture taken in step 104 is basically a box shape. If the user of the portable telephone wants to select the shape of another cutting frame, the user of the portable telephone selects the cutting frame type through the keypad 27. When the user of the portable telephone selects the cutting frame type, the control unit 10 detects this in step 105 and proceeds to step 106 in which the cutting frame shape is displayed on the display unit 80. When the user of the mobile phone selects the crop frame in step 106, the controller 10 detects the cut frame in step 107 and proceeds to step 108 in which the selected crop frame is displayed on the photographed picture through the display unit 80.

If the user of the portable telephone attempts to adjust the size of the cropping frame displayed in the photographed picture in step 104 or 108, the user of the portable telephone selects the size of the cropping frame through the keypad 27. The user of the portable telephone selects the size adjustment of the cutting frame, and the controller 10 detects this in step 109 and proceeds to step 110. In step 110, the user of the portable telephone may adjust the size of the cutting frame by using keys on the keypad 27, for example, a navigation key or a direction key. When the size of the cutting frame is adjusted in step 110 and the user of the portable telephone inputs a confirmation key, the controller 10 detects this in step 111 and proceeds to step 115.

If the user of the portable telephone tries to adjust the position of the cutting frame displayed on the photographed picture in step 104 or 108, the user of the portable telephone selects the position adjustment of the cutting frame through the keypad 27. The user of the portable telephone selects the position adjustment of the cutting frame, and the controller 10 detects this in step 112 and proceeds to step 113. In step 113, the user of the portable telephone may adjust the position of the cutting frame by using keys on the keypad 27, for example, a navigation key or a direction key. When the position adjustment of the cutting frame is completed in step 113 and the user of the portable telephone inputs a confirmation key, the controller 10 detects this in step 114 and proceeds to step 115.

In step 115, when the user of the portable telephone inputs a confirmation key for completing the setting of the cutting frame displayed on the photographed picture, the controller 10 sets the captured frame in which the cutting frame is set as shown in FIG. Proceed to step 116 to display the picture. 4C shows a photograph taken with a basic box-shaped cropping frame. When the cropping frame is set in the picture taken in step 116, the controller 10 generates the captured picture in which the cropping frame is set in step 116 as a bit mask composed of '0' or '1' bits and stores it in the memory 29. Proceed to step 117. The bit mask in step 117 has the same size as the photographed picture in which the crop frame is set, the pixel in the crop frame is composed of '1' bits, and the pixel outside the crop frame is composed of '0' bits. 4D illustrates that the photographed picture in which the cropping frame of FIG. 4C is set is generated as a bit mask.

In step 200, the controller 10 synthesizes the photographed picture and the background picture using the bit mask as shown in FIG. 4D. The synthesis process in step 200 will be described with reference to FIG. 3. In step 201 and step 202, the controller 10 initializes the coordinate values X and Y of the bit mask. If the bits of the coordinate values X and Y of the bit mask are '1', the controller 10 detects this in step 203 and proceeds to step 204. In step 204, the control unit 10 obtains a color value of a pixel of coordinate values X and Y that are the same as coordinate values X and Y having a '1' bit in step 203 in the background picture of step 101. If the bits of the coordinate values X and Y of the bit mask are '0', the controller 10 detects this in step 203 and proceeds to step 205. In step 205, the control unit 10 obtains a color value of a pixel of coordinate values X and Y that are the same as coordinate values X and Y having a '0' bit in step 203 in the captured picture of step 116.

If the above process is repeated until the coordinate values X and Y of the bit mask become the maximum values in steps 201 to 209, the cutting mask 90 composed of '1' bits in the bit mask in step 117 is performed. The picture in the crop frame in step 116 is used for the pixel of the region. In addition, the background picture of the step 101 is used for the pixel of the region outside the crop frame composed of '0' bits in the bit mask in the step 117. As a result, the process proceeds to step 118 in which a picture corresponding to the cropping frame set to the picture taken in step 116 is synthesized based on the background picture of step 101. 4E shows a picture synthesized in step 118.

That is, as described above, the present invention adds a background picture to a picture taken by the user of the mobile phone by a simple operation, so that the user of the mobile phone can express the picture taken by the user more variously. There is an effect that can increase the desire to use the provided portable telephone.

Claims (6)

In the method of combining a background picture and a photographed picture in a mobile phone equipped with a camera, Selecting the background picture and the captured picture in the composite mode; Selecting a crop key while the photographed picture is displayed; Displaying a cutting frame on the taken photo when the crop key is selected; When the cropping frame is set in the photographed picture, a bit mask in which the photographed picture in which the cropping frame is set is a '1' bit and a pixel in an area outside the cropping frame is a '0' bit. Process generated by If the bit of the pixel of the bit mask is '1', the color value of the pixel of the photographed picture is used. If the bit of the pixel of the bit mask is '0', the color value of the pixel of the background picture is used. A method of synthesizing a background picture and a photographed picture in a portable telephone having a camera, characterized in that the process of combining the picture and the photographed picture. The method of claim 1, In the process of synthesizing the background picture and the photographed picture using the bit mask, Initializing coordinates X and Y of the bit mask; If the bit of the pixel corresponding to the coordinates X and Y of the bit mask is '0', the color value of the pixel corresponding to the coordinates X and Y is used in the background image, and the corresponding values of the coordinates X and Y of the bit mask are used. Synthesizing the background picture with the photographed picture by using color values of pixels corresponding to the coordinates X and Y in the photographed picture when the bit of the pixel is '1'; The method of synthesizing the background picture and the photographed picture in a portable phone having a camera, characterized in that the process of combining the background picture and the photographed picture is repeated until the coordinate XY of the bit mask reaches a maximum value. . The method of claim 1, The cropping frame displayed in the photographed picture may be set in various shapes. The method of combining a background picture and a photographed picture in a portable telephone having a camera. The method of claim 1, The cropping frame displayed in the photographed picture is a method for compositing a background picture and a photographed picture in a portable telephone having a camera, characterized in that the position and size can be adjusted. The method of claim 1, And a background picture and a photographed picture in a mobile phone having a camera, characterized in that the size of the background picture and the taken picture are the same. The method of claim 1, And the bit mask is the same as the size of the photographed picture.