KR101392382B1 - Apparatus and method for emboding panorama function of camera in portable terminal - Google Patents

Abstract

The present invention relates to a method and an apparatus for implementing a panoramic function of a camera in a portable terminal, and more particularly, to a method and an apparatus for displaying a part of a photographed image corresponding to a selected direction on a preview screen for a next photographing, And a display control unit that performs an image processing process when a part of the photographed image displayed by the user and a part of a preview screen of an image to be photographed coincide with a predetermined level so as to accurately match a part of the displayed photographed image with a next photographed image And capturing the preview screen if the images are exactly matched. Thus, it is possible to minimize overlapping images by taking panoramic images based on objective data, and to capture panoramic images as close as possible to the target angle of view.

Panorama, camera, shooting, image processing

Description

TECHNICAL FIELD [0001] The present invention relates to a method and an apparatus for implementing a panorama function of a camera in a portable terminal,

The present invention relates to a method and an apparatus for implementing a panoramic function of a camera in a portable terminal, and more particularly, to a method and an apparatus for displaying a part of a first captured image when the next image is captured.

2. Description of the Related Art [0002] Portable terminals are becoming popular due to the development of various electronic and communication industries. The portable terminal has been developed with a complex function of supporting only one main function in order to meet the demand of users. E.g. The portable terminal may include a phone book, a game, a short message, an internet, an e-mail, a morning call, a file viewer, Auto-response function, camera function, and so on.

The camera function is performed in a predetermined angle of view except for a special special camera which supports some special functions. In the conventional film camera, there is no way to overcome these mechanical constraints, but various methods have been studied to capture various angle of view while changing to digital camera.

As a method for overcoming the above limitation, there is a method of storing a plurality of images taken by the digital camera into a computer and overlapping them with one image using an image editing tool.

However, the method of merging the above-mentioned multiple images requires a lot of time and effort to the user, and there is a problem in that it is necessary to work through a separate mechanical device in addition to the digital photographing device.

The above-mentioned problem is also solved by a method in which a plurality of images photographed by the digital camera are converted into a single image by recognizing one subject as an object through the edge detection technique for each image in the camera Respectively.

However, in the above-described method, after the photographing for the desired angle of view is completed, the images are merged into one by applying the edge detection at a time, so the photographer can not remember the edge for the next image photographing, The area may be widened even if it is widened or not photographed.

Since the prediction of the area to be photographed next is impossible, the digital equipment supporting the function must perform frame detection on a large part of the photographed image, which requires a lot of resources for image processing.

In addition, since the above-described problem is solved by using the panorama function of the camera, the conventional panorama function assumes the next image in a state in which the photographer memorizes the previous photographed image, There is a problem that can not be received.

 It is an object of the present invention to provide a method and an apparatus for implementing a panorama function of a camera in a portable terminal.

It is another object of the present invention to provide a method and apparatus for photographing a wide range of angle of view desired by a photographer by using a part of an initial photographed image as a resource for image processing.

According to a first aspect of the present invention, there is provided a method for implementing a panoramic function in a portable terminal, the method comprising: when a next shooting direction is selected after shooting an image, Displaying a part of the photographed image; performing an image processing process when a part of the photographed image displayed by the user and a part of a preview screen of an image to be photographed coincide with a predetermined level, A step of accurately matching a part of the image with an image to be photographed next, and a step of capturing the preview screen when the images are exactly matched.

According to a second aspect of the present invention, there is provided an apparatus for implementing a panoramic function in a portable terminal, the apparatus comprising: an image capturing unit for capturing an image; Displays a part of the photographed image corresponding to the selected direction on the preview screen, and performs an image processing process when a part of the preview screen coincides with the displayed image by a predetermined level by the user, A control unit for controlling the function of capturing the preview screen by exactly matching a part of the image with a next image to be photographed, and a display unit for displaying an image photographed by the control unit and a preview screen .

As described above, according to the present invention, the border of the first shot image is output on the screen for the next shot, and the frame output at the time of shooting of the next image is photographed in conformity with the next image to perform panorama shooting based on objective data, The panoramic image can be photographed as close as possible to the target angle of view.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, a method and an apparatus for outputting a border of the first shot image on a screen for the next shot and photographing the next shot in accordance with the next image will be described.

1 is a block diagram of a portable terminal for implementing a panorama function according to an embodiment of the present invention. The portable terminal includes a control unit 100, a panorama function unit 102, an image processing unit 103, an image capturing unit 104, an image processing unit 106, a display unit 108, a memory 110, an input unit 112 ). ≪ / RTI >

Referring to FIG. 1, the microprocessor unit (MPU) 100 controls the overall operation of the portable terminal and includes a panorama function unit 102 according to the present invention in addition to a conventional function, And controls and processes a function of displaying a part of the border of the first shot image corresponding to the selected direction when the image is shot and the shooting direction is selected.

In addition, the controller 100 includes the image processing unit 103 to move the camera lens in the selected direction to match a border image of the displayed first shot image with a part of the next image to be shot, And controls and processes a function of capturing and storing an image when the two images are exactly matched through a processing process.

The image processing unit 103 moves the camera lens in the direction selected by the user to digitally and accurately map a frame image obtained by matching a border image of the first shot image with a predetermined level of a next image to be shot.

That is, a frame image of the displayed first shot image and a part of an image to be shot next are formed into square matrices of arbitrary sizes to calculate the RGB average value of each pixel, and the RGB values of the two images are most similar So as to map them.

The image capturing unit 104 has a camera sensor that captures image data, converts the photographed optical signal into an electrical signal, and a signal processor that converts an analog signal into a digital signal.

The image processing unit 106 encodes the image signal output from the image capturing unit 104 and outputs the encoded image signal to the control unit 100. The control unit 100 decodes the data input from the control unit 100 and outputs the decoded data to the display unit 108 . In addition, the image processing unit 106 converts the signal received from the image photographing unit 104 into data and directly outputs the converted signal to the display unit 108. FIG.

The display unit 108 displays status information, limited numbers, and characters generated during operation of the portable terminal. In addition, the display unit 108 displays panoramic images photographed according to the present invention.

The input unit 110 includes keys for inputting numeric or character information and function keys for setting various functions, and outputs the functions corresponding to the keys input by the user to the controller 100. [ In addition, an input for selecting a photographing direction is output to the controller 100 according to the present invention.

The memory 112 stores a program for controlling the overall operation of the portable terminal, temporary data generated during operation of the portable terminal, system parameters, and other storage data. Further, according to the present invention, a program for photographing a panoramic image through image processing and a captured panoramic image are stored.

FIG. 2 shows a procedure for photographing a panoramic image according to an embodiment of the present invention.

Referring to FIG. 2, if the user selects the panoramic photographing menu in step 201, the portable terminal proceeds to step 203 and photographs the first image by the user.

In step 205, the portable terminal determines whether a photographing direction for the next photographing is selected. Here, the photographing direction is four directions of up, down, left, and right. If the photographing direction for the next photographing is selected, the portable terminal proceeds to step 207 and displays a part of the first photographing image corresponding to the selected direction on the preview screen for the next photographing.

For example, if the image shown in FIG. 3 is the full angle of view the user wants to capture, the image # 1 in FIG. 3 is the initial image, and the user selects the right direction for image # 2, If the right edge part is displayed as 401 in FIG. 4 and the downward direction is selected in order to take the third image, the lower edge part is displayed as 403 in FIG. 4, and the displayed edge part is used as a reference for shooting the next image .

In step 209, the portable terminal moves the camera lens in the selected direction by the user, and checks whether a part of the preview image coincides with a predetermined level on a part of the first captured image displayed.

If a part of the preview image coincides with a predetermined level on a part of the first displayed image, the portable terminal proceeds to step 211, performs an image processing process to accurately match the image, Capture the screen.

Here, the image processing may be configured such that a part of the initial shot image and a part of the preview screen matched by the predetermined level are respectively composed of square matrices of arbitrary sizes, and the RGB average value of each pixel is calculated, It is a process of matching and mapping so as to have a similar value.

Then, the portable terminal temporarily stores the captured preview image in a buffer in step 215, and proceeds to step 217 to check whether a next image for a panoramic image is captured. When the next image for the panoramic image is photographed, the portable terminal returns to step 205 and executes the following steps again.

On the other hand, if the next image for the panoramic image is not captured by another image, the portable terminal proceeds to step 219 to check whether the captured image has been previously stored. When the image storage is selected by the user, the portable terminal stores the photographed image and terminates the algorithm of the present invention.

On the other hand, when the image storage is not selected, the portable terminal terminates the algorithm of the present invention.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

1 is a block diagram of a portable terminal for implementing a panorama function according to an embodiment of the present invention;

2 is a diagram illustrating a procedure for photographing a panoramic image according to an embodiment of the present invention;

FIG. 3 is a view showing a full angle of view to be photographed by a user according to an embodiment of the present invention, and FIG.

Figure 4 illustrates a portion of a previous image displayed in a selected direction in accordance with an embodiment of the present invention.

Claims (12)

A method for implementing a panoramic function in a portable terminal, Sensing a first input for image acquisition to obtain and store a first image; Outputting the first image together with a preview screen for the second image; Combining the stored first image with a second image output as a preview screen when a preview screen for the second image including the output first image is output; And Storing the combined image when sensing a second input for storing the image. The method according to claim 1, A method for implementing a panorama function in a portable terminal, Outputting the first image together with a preview image for the second image, and confirming the photographing direction; And And outputting the first image corresponding to the photographing direction. The method according to claim 1, The operation of combining the stored first image and the second image outputted as the preview screen, Characterized in that the method is performed automatically before user input is generated. The method according to claim 1, Wherein the first image, which is output together with a preview of the second image, And a border region of the predefined first image. The method according to claim 1, The operation of combining the stored first image and the second image outputted as the preview screen, And matching the output first image with a first image region included in a second image output to the preview screen. 6. The method of claim 5, The operation of combining the stored first image and the second image outputted as the preview screen, And the average value of the RGB values of the first image and the second image. A portable terminal for implementing a panorama function, An image capturing unit for capturing an image; A display unit for outputting a shot image; And Sensing a first input for acquiring an image to acquire and store a first image, outputting the first image together with a preview screen for the second image, and outputting the first image to a second image including the output first image A control unit for combining the stored first image and a second image outputted as a preview screen and storing the combined image when a second input for storing the image is sensed, . 8. The method of claim 7, Wherein, Outputs the first image together with a preview screen for the second image, and then confirms the photographing direction. 8. The method of claim 7, Wherein, And automatically combines the stored first image and the second image output to the preview screen before user input is generated. 8. The method of claim 7, Wherein, To output a predefined border area of the first image together with a preview of the second image. 8. The method of claim 7, Wherein, And combines the first image and the second image by matching the output first image and a first image region included in the second image output to the preview screen. 12. The method of claim 11, Wherein, And combining the first image and the second image based on the RGB average value of the first image and the second image.

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