KR20060108402A - Method for taking a picture of specific part - Google Patents

Abstract

The present invention relates to a method for enlarging and photographing only a specific area in camera photographing, and to a method for capturing a specific area selected by a user and enlarging only the corresponding area at a predetermined ratio and the remaining part as the original image. The present invention provides a process of displaying an entire original image input from a camera, a process of setting an enlarged area and an enlarged magnification of a portion to be enlarged among the displayed image images from a user, and expanding the set enlarged area at the enlarged magnification. Generating a magnified image, generating a magnified view image in which the magnified image is overlaid on the original image image, and storing the magnified view image in a predetermined memory according to a photographing request of a user; .

Camera, Shooting, Mobile Phone, Magnification, Magnification

Description

How to zoom in on a specific area {METHOD FOR TAKING A PICTURE OF SPECIFIC PART}

1 is a block diagram illustrating an internal configuration of a mobile communication terminal according to the present invention.

2 is a flowchart illustrating a process of capturing an enlarged view image according to the present invention;

3A, 3B, and 3C illustrate one embodiment of a screen according to the present invention.

4 is a block diagram including a controller for performing an enlarged view image generation.

* Description of the symbols for the main parts of the drawings *

S204: Full original image display S206: Magnification area / magnification setting

S208: Create Enlarged Image S210: Composite Enlarged View Image

S212: Enlarge view image display S216: Shooting and storing

The present invention relates to a method for enlarging and photographing only a specific area in camera photographing, and to a method for capturing a specific area selected by a user and enlarging only the corresponding area at a predetermined ratio and the remaining part as the original image.

Unlike the conventional method, which was used only for a simple call purpose according to the remarkable development of additional functions of the mobile communication terminal, there have been many developments in the functions of data communication such as GPRS, CDMA EV-DE, CDMA EV-DV, WCDMA HSDPA, and the like. Accordingly, as described above, large-capacity data communication is enabled, and the mobile communication terminal can provide multimedia services such as VOD streaming broadcast and video call. In addition, a camera or the like is added to the mobile communication terminal so that the user can take still images and videos using the mobile communication terminal.

However, in the shooting, shooting is performed by providing a special shooting function such as full magnification, special effects (sticker shooting), etc. In the case of the full magnification, the user has no choice but to zoom in on the entire screen to be photographed to take a monotonous picture. I could only shoot. That is, when only a specific portion of the entire image input through the camera is to be enlarged and the remaining portion is to be captured as the original image, there is no way to implement this. For example, when taking pictures of several children, including their own children, there was no way to implement this if they wanted to zoom in on their own children and shoot the rest of the original image.

The present invention has been made to solve the above problems, and an object of the present invention is to present an algorithm for enlarging only a specific portion of the entire image to be photographed and photographing the remaining portion as the original image image.

In order to achieve the above object, the present invention provides a process of displaying an entire original image input from a camera, a process of setting an enlarged area and an enlarged magnification of a portion to be enlarged among the displayed image images from a user, and the set enlarged area. Generating a magnified image magnified at the magnification, generating a magnified view image in which the magnified image is overlaid on the original image image, and storing the magnified view image in a predetermined memory according to a photographing request of a user; It includes the process of doing.

Hereinafter, the detailed description of the preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following description of the reference numerals to the components of the drawings it should be noted that the same reference numerals as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to general practices of those belonging to the technical field of the present invention, and the definitions should be made based on the contents throughout the present specification.

 In the embodiment of the present invention will be described taking a mobile communication terminal having a camera as an example. However, it will be apparent that the present invention can be applied to all terminals having a camera function in addition to the mobile communication terminal.

1 is a diagram illustrating a configuration of a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 1, the RF unit 102 performs a wireless communication function of the video terminal. The RF unit 102 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 104 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 104 may be configured of a modem and a codec. The codec includes a data codec for processing packet data and an audio codec for processing an audio signal such as voice. Therefore, the data processing unit 104 performs a function of decoding the image signal and the audio signal transmitted to the image terminal of the other party using a codec.

The audio processor 106 reproduces a received audio signal output from the audio codec of the data processor 104 through a speaker or transmits a transmission audio signal generated from a microphone to the audio codec of the data processor 104. Perform.

The key input unit 108 includes keys for inputting numeric and character information and function keys for setting various functions. In particular, the present invention provides a shortcut key for receiving an enlarged image and an enlarged magnification from a user. Also, when a photographing key is inputted, a photographing key is provided so that an image photographing and storing is performed.

The camera 116 captures image data and converts the photographed optical image signal into an electrical image signal. The camera 116 uses the camera sensor CCD to capture an image of the mobile communication terminal. Send to 114.

The image processor 114 performs a function of generating screen data for displaying an image signal output from the camera 116. The image processor 114 processes the image signal output from the camera 116 in units of frames, and outputs the frame image data according to the characteristics and size of the display unit 112 (LCD). In addition, the image processor 114 includes an image codec, and compresses the frame image data displayed on the display unit 112 in a predetermined setting method or restores the compressed frame image data to the original frame image data. Perform. The image codec may be a JPEG codec, an MPEG4 codec, a wavelet codec, or the like. The image processor 114 converts an image signal input from the camera 116 into frame image data and transmits the image signal to the display unit, and the display unit 112 displays the received frame image data as a view image. The view image refers to an image image in which an image input from the camera 116 is displayed on the display unit 112.

In particular, in the present invention, the image processor 114 transmits an enlarged view image generated by enlarging a specific area of the frame image data to a predetermined magnification to the display unit, and the display unit 112 displays the received enlarged view image. Perform the action. That is, when the control unit 100 receives an area to be enlarged and an enlargement magnification from the user and transmits it to the image processing unit, the image processing unit 114 generates a new enlarged view image in which only the corresponding area is enlarged based on this, and then displays it as the display unit. The display unit 112 displays the image frame data received from the image processor as a view image. The magnified view image is an image image generated by enlarging only a specific portion of an image input to the camera 116. The user views an enlarged view image displayed on the display unit and performs photographing.

The display unit 112 is implemented as a liquid crystal display device such as an LCD to display an image signal output from the image processing unit 114 on a screen, and simultaneously display an image transmitted from the counterpart image terminal. In addition, the user data output from the controller 100 is displayed.

The memory 110 includes a program memory and a data memory. The program memory includes a booting and an OS for controlling a general operation of the mobile communication terminal, and the data memory is a place for storing various data generated during the operation of the mobile communication terminal.

The controller 100 performs a function of controlling the overall operation of the mobile communication terminal. In particular, the controller 100 receives an area to be enlarged and an enlargement magnification from a user and provides the same to the image processor so that the image processor enlarges a specific area to a predetermined size. Can be.

2 is a flowchart illustrating a process of generating and capturing a view image in which a specific area is enlarged according to the present invention.

When the mobile communication terminal enters the photographing mode at the request of the user (S202), the image processor transmits the image signal input from the camera to the display unit. The display unit displays the received frame image data as a view image in full screen size (S204). FIG. 3A illustrates a view image displayed on the display unit as described above.

In operation S206, an enlarged area and an enlarged magnification are selected while the view image is displayed on the display unit. In the full screen size displayed on the display unit, a magnification area and magnification ratio to be magnified are selected by the user. The area to be magnified may be set in various ways. For example, as shown in FIG. 3B, the selection frame is provided with the view image, so that the user can select the area to be enlarged by moving the selection frame 302. The size of the selection frame 302 may be changed by user setting. For example, the size of the selection frame may be 20 * 32 pixels or 40 * 64 pixels. In addition, although the shape of the selection frame is shown as a rectangular selection frame in FIG. 3B, this is just one example, and the selection frame is not the rectangular frame as shown, but the circle selection frame, triangular selection frame, and human face selection frame. Unlimited would be true.

Similarly, when receiving a magnification to be input from the user, it will be apparent that the specific magnification item can be selected by the user by implementing the magnification directly from the user or by displaying a list of magnifications. As a result, the controller has a feature of providing a menu for setting the magnification area and the magnification in order to receive the magnification area and the magnification from the user.

After the enlargement area and the magnification setting are set as described above (S206), the image processor generates a magnified image based on the information of the set magnification area and the magnification (S208) and then synthesizes the magnified view image (S210). Perform the action. That is, when the setting of the magnification area and the magnification is received from the user, the controller transmits the input magnification area and the magnification to the image processor, whereby the image processor enlarges the magnification area at the magnification and enlarges the image. A process of generating a process is performed (S208). The information related to the magnification area transmitted from the controller to the image processing unit transmits horizontal and vertical pixel information set as the magnification area. For example, when there is an enlargement area setting using a rectangular selection frame, the horizontal area of the rectangular selection frame is transmitted. The pixel value [value of horizontal start pixel point, value of horizontal end pixel point] and vertical pixel value [value of vertical start pixel point, value of vertical end pixel point] are transmitted to the image processor.

In detail, an enlarged image generation process (S208) and an enlarged view image synthesis process (S210) of the enlarged region are described in detail. When a specific portion is selected as the enlarged region among the view images displayed on the display unit, the image processor enlarges the corresponding image from the controller. After receiving the information of the region, the process may be performed to enlarge the corresponding region to generate an enlarged image (S208). The magnification of the digital zoom method is performed by a logical combination of only the magnification area set in the entire original image of the image signal coming through the camera lens in the CCD sensor of the camera. Since the digital zoom magnification method is conventionally known, a detailed description thereof will be omitted. However, the method of generating the magnified image by the digital zoom magnification method is different from the conventional magnification method in that it does not enlarge the entire original image of the video signal coming through the camera lens, but enlarges only the magnified area transmitted from the controller. It will be obvious that there is a characteristic to doing.

After generating the enlarged image (S208) as described above, the expanded enlarged image is overlaid on the original image and synthesized (S210), thereby finally generating the enlarged view image. As a result, the enlarged view image refers to an image synthesized by overlaying only a specific portion of the original image and overlaying the original image.

After the synthesis (S210) of the enlarged view image is completed, the synthesized enlarged view image is displayed on the display unit (S212). The display of the enlarged view image is illustrated in FIG. 3C. When there is a user's shooting key input (S214) in the enlarged view image display state, the mobile communication terminal has a process (S216) of capturing and storing according to the enlarged view image currently displayed. When there is an end key input (S218) in the shooting mode state, the shooting mode exits and returns to the call standby mode.

Meanwhile, FIG. 2 illustrates a block diagram of processing an enlarged view image in an image processor. As another embodiment of the present invention, as shown in FIG. 4, the controller may generate the enlarged view image directly without the help of the image processor. . In the functional block of FIG. 2, the control unit 404 has a configuration of generating an enlarged view image by receiving an enlarged area and an enlarged magnification from a user and transmitting the same to the image processor, but directly expanding the view image from the controller without the image processor. The invention may be implemented to produce. That is, in the block diagram of FIG. 4, the video signal input from the camera 402 is converted in units of frames by the image processor (not shown in FIG. 4). However, the controller 404 itself controls the image signal from the image processor. The processed frame image data is magnified according to an enlarged area and an enlarged magnification to generate an enlarged view image and then displayed on the display unit 406.

In the above description of the present invention, a specific embodiment such as a mobile communication terminal has been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention is not to be determined by the embodiments described above, but will be apparent in the claims as well as equivalent scope.

As described above, the present invention has an effect of enlarging and photographing only a region of interest by presenting an algorithm capable of enlarging and photographing a specific region. In addition, by presenting a variety of shooting methods away from the conventional simple shooting method, there is an effect that a more functional and beneficial shooting can be made.

Claims (5)

A first process of displaying the entire original image input from the camera, A second process of setting, by a user, an enlarged area and an enlarged magnification which are a portion to be enlarged among the displayed video images; Generating a magnified image in which the set magnified area is enlarged at the magnification; Generating a magnified view image in which the magnified image is overlaid on the original image image; A fifth process of storing the enlarged view image in a predetermined memory according to a photographing request of a user; How to shoot by zooming in on a specific area comprising a. The method of claim 1, wherein the setting of the enlarged area and the enlarged magnification from the user in the second process comprises selecting a magnified area from the entire original image using a closed curve selection frame. How to. The method of claim 2, wherein the selection frame is configured to receive and set a size of the frame from a user. The specific area of claim 1, wherein the setting of the magnification area and the magnification factor from the user in the second process comprises receiving position pixel values and magnification values of the magnification area and the magnification directly from the user. How to zoom in and shoot. The method of claim 1, wherein the magnified image is a digital zoom method in which only an enlarged region selected from an image signal received through a lens of a camera is enlarged by a digital logic combination.

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