KR101467870B1 - Digital photographing apparatus, method for controlling the same, and recording medium storing program to implement the method - Google Patents

Abstract

A second aspect of the present invention is a digital image photographing apparatus, comprising: a first projection data generating unit that generates second projection data having a minimum difference from first projection data of a first image captured by the digital image photographing apparatus, And a digital signal processor for searching the image and combining the first image and the second image to generate a panoramic image.

Description

[0001] The present invention relates to a digital photographing apparatus, a control method thereof, and a recording medium storing a program for executing the same,

The present invention relates to a digital image photographing apparatus, a control method thereof, and a recording medium storing a program for executing the same, and more particularly, to a digital image photographing apparatus capable of easily obtaining a panorama image, And more particularly, to a recording medium storing a program for a computer.

Generally, a digital image photographing apparatus stores an image file obtained by a photographing operation in a photographing mode on a storage medium, reproduces the image file stored in the storage medium in a playback mode, and displays the image on a display unit. Of course, the image file obtained by the photographing operation is also reproduced even in the photographing mode. In particular, a panoramic image is generated by acquiring and combining a first image and a second image, which are images of adjacent objects.

In the case of a conventional digital imaging apparatus, the panoramic image was created entirely depending on the user's senses. That is, after the user obtains the first image, the digital image photographing apparatus is moved according to the sense of the user to obtain the second image to be connected to the first image.

However, in such a conventional digital image photographing apparatus, since the correlation between the first image and the second image is determined solely by the sense of the user, a great effort of the user is required in combining the first image and the second image, There is a problem that the first image and the second image are not correctly interconnected when the third image, which is the panoramic image, is obtained by combining the first image and the second image.

The main object of the present invention is to provide a digital photographing apparatus which can easily obtain a panoramic image, a control method thereof, and a recording medium storing a program for executing the control method.

A digital image photographing apparatus according to the present invention is a digital image photographing apparatus which is characterized in that the second projection data which minimizes the difference from the first projection data of the first image photographed by the digital image photographing apparatus, And a digital signal processor for searching a second image captured by the apparatus, and combining the first image and the second image to generate a panoramic image.

The digital signal processing unit may include an area setting unit for setting a first area in a part of the first image, a data extracting unit for extracting the first projection data in the first area, A search area setting unit configured to set a search area to be compared with the first projection data, a search area searching unit configured to search a second area having second projection data within the detection area with a minimum difference from the first projection data, And a combining unit combining the first area of the first image and the second area of the second image to generate and display the panorama image.

In the present invention, the area setting unit may set the first area by a user.

In the present invention, the detection area setting unit may set the detection area larger than the first area.

In the present invention, the search unit may set a comparison area having the same size as the first area in the search area, extract the comparison projection data of the comparison area, and compare the comparison projection data and the first projection data And the second region having the second projection data with the smallest difference from the first projection data can be searched for.

In the present invention, the searching unit may normalize the first projection data and the comparison projection data, and compare the normalized first projection data and the comparison projection data.

In the present invention, the search unit may subtract the comparison projection data value from the first projection data value, and search for the second projection data having a minimum difference from the first projection data.

In the present invention, the search unit can search for the second projection data having a minimum difference from the first projection data by obtaining the standard deviation of the first projection data value and the comparison projection data value.

In the present invention, the first projection data, the second projection data, and the comparative projection data may be luminance values of pixels existing in a predetermined area of the image.

According to another aspect of the present invention, there is provided a method of controlling a digital image photographing apparatus for combining a first image and a second image captured by a digital image photographing apparatus to generate a panoramic image, (a) setting a first area in a part of a preview image of the digital image photographing apparatus, (b) photographing the first image, (c) extracting first projection data in the first area, , (d) capturing the second image, (e) setting a search area in a portion of the second image, (f) determining a difference between the first projection data value and the first projection data value (G) combining the first region of the first image and the second region of the second image to generate and display the panoramic image, .

In the present invention, the step (a) may set the first area in a portion of the first image to which the second image is to be combined.

In the present invention, the step (e) may set the search area to be larger than the first area.

In the present invention, the step (f) includes the steps of: (f1) setting a comparison area having the same size as the first area in the search area, (f2) extracting comparative projection data of the comparison area, (f3) comparing the first projection data value with the comparison projection data value, (f4) comparing the first projection data value with the first projection data value, and And searching for the second region.

In the present invention, in the step (f3), the first projection data and the comparison projection data are normalized, and the normalized first projection data and the comparison projection data are compared.

According to an embodiment of the present invention, the step (f) subtracts the comparison projection data value from the first projection data value to search for the second projection data having a minimum difference from the first projection data.

In the present invention, the step (f) may calculate the standard deviation of the first projection data value and the projection data value to search for the second projection data having a minimum difference from the first projection data.

In the present invention, the first projection data, the second projection data, and the comparative projection data may be luminance values of pixels existing in a predetermined area of the image.

Further, a recording medium according to an embodiment of the present invention stores a program for executing the method.

According to the digital photographing apparatus of the present invention, the control method thereof, and the recording medium storing the program for executing the method, the panoramic image can be obtained automatically.

Hereinafter, the present invention will be described in detail with reference to embodiments of the present invention shown in the accompanying drawings. But. The present invention may be modified in various other forms, and the scope of the present invention is not limited to the following embodiments. The embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention. Accordingly, the shapes and sizes of the elements in the drawings may be exaggerated for clarity of description, and the elements denoted by the same reference numerals in the drawings are the same elements.

FIG. 1 is a perspective view showing a front view of a digital image processing apparatus according to an embodiment of the present invention, and FIG. 2 is a rear view showing a rear surface of the digital image processing apparatus of FIG.

1 and 2, the digital camera 10 includes a shutter-release button 101, a power button 103, a flash 105, an auxiliary light 107, a lens unit 109, a wide angle- A zoom button 111w, a telephoto-zoom button 111t, a display unit 113, and a button 121. The zoom button 111w,

The shutter-release button 101 is provided with a shutter-release button 101 for exposing an image sensor (not shown) such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide Semiconductor) And a shutter (not shown) can be opened and closed.

The shutter-release button 101 can generate the first and second image pickup signals by the photographer input. When the first shutter-release signal as the half-shutter signal is inputted, the digital image processing apparatus focuses and adjusts the amount of light, and at this time, the display unit 113 performs a constant display such as a green light on the display unit 113 . When the first shutter-release signal is focused and the amount of light is adjusted, a second shutter-release signal as a full shutter signal is input to capture an image.

The power button 103 is input to supply power to the digital image processing apparatus 100 to operate.

The flash 105 illuminates bright light instantly when taking a picture in a dark place. The flash mode may include automatic flash, forced flash, prohibited flash, red-eye reduction, and slow synchro flash.

The auxiliary light 107 supplies light to the subject so that the digital image processing apparatus 100 automatically and quickly catches the focus when the light amount is insufficient or at night.

The lens unit 109 receives light from an external light source and causes an image to be formed on the image sensor.

The wide-angle zoom button 111w or the tele-zoom button 111t widens the angle of view or narrows the angle of view depending on the input, in particular, when changing the size of the selected exposure area. When the wide angle-zoom button 111w is input, the size of the selected exposure area is reduced, and when the telephoto-zoom button 111t is input, the size of the selected exposure area is increased.

The buttons B1 to B14 are provided in the rows and columns of the display unit 113. [ The buttons B1 to B14 provided in the row and column of the display unit 113 are provided with a touch sensor (not shown) or a contact type switch (not shown).

That is, the touch sensors are provided on the buttons B1 to B14 to move up / down / left / right while touching the buttons B1 to B7 of the horizontal row or the buttons B8 to B14 of the vertical row, It is possible to select any value (e.g., color or brightness) of the items, or activate a submenu icon included in the main menu icon.

In addition, the button frames (B1 to B14) are provided with contact switches so that the main menu icon and the sub menu icon can be directly selected to execute the corresponding function. The touch sensor requires a relatively weak touch compared to the contact switch input, but the contact switch input requires a relatively strong touch compared to the touch sensor input.

3 is a block diagram showing the configuration of a digital image processing apparatus according to an embodiment of the present invention. The display unit 113, the user input unit 121, the image pickup unit 123, the image processing unit 125, 127, and a digital signal processing unit 129. [

The user input unit 121 includes a shutter-release button 101 for opening and closing a shutter and an iris for exposing light to an image sensor such as a CCD or a CMOS for a predetermined time, a power button 103 for inputting power, A wide angle-zoom button 111w and a telephoto-zoom button 111t for widening the angle of view according to the angle of view, a narrow angle of view, and a key input unit 121 for setting a character or a menu.

The image pickup unit 123 may include a lens unit 109, a shutter, an aperture, an image sensor and an analog-to-digital converter (ADC) not shown in the figure. The shutter is a mechanism that adjusts the amount of light that is exposed with the aperture. The lens unit 109 receives light from an external light source and causes light to be formed on the image sensor. At this time, the diaphragm adjusts the amount of incident light (amount of light) according to the degree of opening and closing thereof. The opening / closing degree of the diaphragm is controlled by the control unit 129.

The image sensor accumulates the amount of light inputted through the lens unit 109, and outputs the captured image according to the accumulated light amount in accordance with the vertical synchronizing signal. Image acquisition by the digital image processing apparatus 100 is performed by an image sensor that converts light reflected from a subject into an electrical signal. Image sensors used in the digital image processing apparatus 100 include a CMOS image sensor and a CCD image sensor. In order to obtain a color image using a CCD image sensor, a color filter is required, and a filter (not shown) called CFA (Color Filter Array) is generally employed. CFA has a regularly arranged structure that passes only light that represents one color per pixel, and it has various forms according to the arrangement structure. The ADC converts the analog video signal output from the CCD into a digital signal.

The image processing unit 125 processes the digitally converted image signal so that it can be displayed. The devices used in the CCD and CFA filters are sensitive to temperature changes and generate dark currents depending on the temperature changes, which include undesired black levels in the video signal. The image processor 125 can remove the black level generated by the dark current as described above.

The image processing unit 125 may also perform gamma correction. Because human vision responds nonlinearly to brightness in accordance with Weber's law, when the bit depth is limited, the brightness of the light is recorded linearly, Lt; / RTI > Therefore, in order to show the maximum picture quality at a given bit depth, it is necessary to encode using a non-linear function. As described above, encoding information in accordance with nonlinearity of human vision is referred to as gamma correction. For example, the input brightness level of the 12-bit video signal may be corrected to an 8-bit brightness level, and the corrected input video signal may be output.

The image processing unit 125 performs CFA interpolation for interpolating a Bayer pattern embodied with RGAG lines and GBGB lines of gamma-corrected predetermined data into RGB lines. The CFA interpolation of the image processing unit 125 first reconstructs the G channel in the pixels having only the R or B channel values, then fills empty values in the order of the B channel, the R channel, or the R channel and the B channel, , B Three channels can be restored.

The image processing unit 125 converts the interpolated RGB signals into YUV signals, edge-compensates the Y signals by filtering the Y signals by a high-pass filter, and calculates the color values of the U and V signals using a standard color coordinate system Correcting color correction is performed, and noise of these can be removed.

The image processing unit 125 compresses and processes the Y, U, and V signals from which noise has been removed to generate an Exif file, and the generated Exif file is displayed on the display unit 113 and stored in the storage unit 127 . All the operations of the image processing unit 125 operate under the control of the digital signal processing unit 129. [

The digital signal processing unit 129 outputs second projection data having a minimum difference from the first projection data of the first image photographed by the digital image photographing apparatus 100 to the second image And combines the first image and the second image to generate a panoramic image. To this end, the digital signal processing unit 129 includes an area setting unit 129-1, a data extracting unit 129-2, a search area setting unit 129-3, a searching unit 129-4, a combining unit 129- 5, and a control unit 129-6.

The area setting unit 129-1 may set the first area in the portion to which the second image is to be combined in the first image under the control of the controller 129-6. In detail, when a first image and a second image are combined to generate a panoramic image, a first image captured first is combined with a second image captured later. The second image is displayed on the left part of the first image or on the right side Can be combined to fit the part. In addition, the second image may be fitted to the top or bottom of the first image. Therefore, in order to generate the panoramic image, it is necessary to first determine to which part of the first image the second image to be photographed next is to be combined in the photographed first image, and photograph the second image to fit the part. The area setting unit 129-1 sets a first area that is a part where the second image is combined in the first image. The first area is where the first image and the second image are combined.

The area setting unit 129-1 can set the first area by the user. That is, before the first image capturing, the user views the preview image displayed on the display unit 113 and determines which portion of the first image to be photographed is to be combined with the second image to form a panoramic image, 14 can be operated to determine the first area. 4 shows a first image in which a first area is set. Referring to FIG. 4, the first region 202 is set in the right portion of the first image 201. [ The panoramic image is generated by combining the second image to the right with respect to the first area 202. [ However, if it is desired to join the second image to the left, upper, or lower side of the first image 201, the first region may be set to the left, upper, or lower portion of the first image. The window for setting the first area can be displayed under the control of the area setting unit 129-1 and the user can adjust the position of the first area by operating the button units B1 to 14 while viewing the preview window . The first region may be determined in the preview image before the first image capturing as described above, and may be determined after the first image capturing. That is, the first image and the window for setting the first area are displayed on the display unit 113, and the user operates the button units B1 to 14 while viewing the display unit 113, You can move the window for.

The data extraction unit 129-2 can extract the first projection data in the first area under the control of the control unit 129-6. The first projection data is data representing a luminance value of a pixel existing in the first area. That is, in general, an image taken by a digital image photographing apparatus is stored in a YCbCr format. The image has a plurality of pixels, and each pixel has Y (luminance value), Cb, and Cr (color information). The first projection data is data representing a luminance value of pixels existing in the first area set in the first image. For example, in the case where the first area is a rectangular area having 50 pixels horizontally and 100 pixels vertically, the first projection data is 50x100 matrix data in which each component is the luminance value of each pixel.

The search area setting section 129-3 can set a search area that is a part of the second image to be compared with the first projection data under the control of the control section 129-6. The search area is a part of the second image to be compared with the first projection data. The same or similar area as the first area is searched in the second image. In this case, the searching unit 129-4 described below searches the second image for the projection data to be compared with the first projection data of the first area do. The search area setting unit 129-3 sets a part of the second image as the search area so that the search unit 129-4 does not make the entire second image to be compared with the first area, It is compared with the domain. It is possible to shorten the time required to search for a region where the first image and the second image overlap with each other, since only the search region which is a part of the second image is searched.

The search area setting unit 129-3 can set the detection area larger than the first area. This is because it is impossible to compare the detection area with the projection data of the first area when the detection area is set smaller than the first area. Fig. 5 is an image showing that the detection area 302 is set in the second image 301. Fig. Referring to FIG. 5, the comparison area 303 is the same size as the first area 202 compared to the first area 202 (FIG. 4). The search area 302 is set to be larger than the comparison area 303 as shown in FIG.

The retrieving unit 129-4 can search the second area having the second projection data within the detection area under the control of the control unit 129-6 with the minimum difference from the first projection data. That is, the search unit 129-4 compares the comparison projection data of the comparison area with the first projection data while setting the comparison area having the same size as the first area of the first image in the detection area of the second image, 1 < / RTI > comparison data having the minimum difference from the projection data. The comparative projection data is projection data of the comparison area. Since a plurality of comparison areas can be set in the search area, there are a plurality of comparative projection data. The second projection data is the comparative projection data in which the difference from the first projection data among the plurality of comparison projection data is minimized.

Since the projection data (first projection data, second projection data, and comparative projection data) are data representing the luminance values of the pixels existing in the predetermined area, if there is no difference between the projection data of the two areas, It can be seen that the luminance values of the existing pixels are the same, and the two areas can be regarded as matching. More specifically, the search unit 129-4 sets a comparison area having the same size as the first area in the search area, extracts the comparative projection data of the comparison area, It is possible to compare the difference with the first projection data and to search the second area having the minimum difference from the first projection data. The search unit 129-4 obtains the difference between the first projection data of the first area and the comparison projection data of the comparison area. If there is no difference between the first projection data and the comparison projection data, It can be seen that it matches. However, since the luminance values of the first image and the second image may not be the same due to lens distortion or various kinds of noise, the search unit 129-4 may compare the first projection data with the first projection data, And the regions where the difference of the projection data is minimum can be regarded as coinciding with each other.

The retrieving unit 129-4 can subtract the projection data value from the first projection data value and retrieve the second projection data with a minimum difference from the first projection data.

Also, the search unit 129-4 can search for the second projection data having a minimum difference from the first projection data by obtaining the standard deviation of the first projection data value and the projection data value.

The searching unit 129-4 may compare the first projection data value and the comparison projection data value with each other by normalizing the first projection data value and the comparison projection data value, respectively. The normalization of the first projection data is to divide the luminance value of the pixels in the first area by the luminance value of the brightest pixel in the first image and the normalization of the comparative projection data is performed by using the luminance value of the brightest pixel in the second image, It divides the luminance values of the pixels.

5, the search unit 129-4 extracts the comparative projection data in the comparison area 303 while setting the comparison area 303 in the detection area 302, Obtain the difference from the data. The retrieval unit 129-4 retrieves the comparison area 303 having the comparative projection data value that minimizes the difference from the first projection data value of the first one of the comparison areas in the detection area.

The combining unit 129-5 combines the first region of the first image and the second region of the second image under control of the control unit 129-6 to generate a panoramic image and displays the panoramic image on the display unit 113 Can be displayed. The second region of the second image, which is searched by the searching unit 129-4 to match the first region of the first image, is combined in the combining unit 129-5. 6 shows a panoramic image 401 in which a first image 201 and a second image 301 are combined. Since the first area 202 and the second area 303 coincide with each other, the combining unit 129-5 combines the first image 201 and the second image 301 so that these areas overlap. The portion of the first image 201 and the second image 301 that does not match the size of the image is removed by the combining unit 129-5. 4 and 5, the lower portion A1 of the first region 202 of the first image 201 and the right portion A2 of the first image 201, including the first region 202, Can be removed. In addition, the upper portion B1, the lower portion B2, and the left portion B3 of the second region 303 in the second image 301 can be removed. The combining unit 129-5 may generate the panoramic image 401 having uniform horizontal and vertical by combining the first image 201 and the second image 301 by removing the portion that does not fit.

Conventionally, in order to create a panoramic image, a part of the first photographed image is displayed before the second image photographing, and the user photographs the second image so as to overlap with a part of the displayed first image. That is, the first image only served as a simple guide for the second image capture, and the user made a considerable effort to match the first image portion during the second image capture. However, according to the present invention, when the user photographs the second image so as to overlap with the first image, the projection data of the first image and the projection data of the second image are compared with each other, A panoramic image is generated by searching for overlapping portions.

Next, a control method of the digital image photographing apparatus according to the present invention will be described in detail with reference to FIG. The image processing method according to the present invention can be performed in the image photographing apparatus as shown in FIG. 3. According to the embodiment, the main algorithm of the operation method is a digital signal processing unit 129 ). ≪ / RTI >

Referring to FIG. 7, a method of controlling a digital image photographing apparatus according to the present invention includes selecting a panorama mode (S101), setting a first area in a preview image (S102), photographing a first image (S103), a step S104 of extracting the first projection data of the first area, a step S105 of photographing the second image, a step S106 of setting a search area in the second image, (S106) of searching for a second area having the projection data and the second projection data to be minimum, and combining and combining the first area and the second area to generate and display the panorama image (step S107).

First, the panorama mode is selected according to a signal from the user (S101). A menu including the panoramic mode is displayed on the display unit 113. When the user operates the button units B1 to 14 to select the panoramic mode, the panoramic mode is set by the control of the digital signal processing unit 129. [

Next, a first area is set as a part of the preview image displayed on the display unit 113 (S102). The first region may be a portion to which the second image is combined. If it is desired to combine the second image on the first image, a first region may be set on top of the first image, It is possible to set the first area. The area setting unit 129-1 can set the first area by the user. In other words, before shooting the first image, the user checks the preview image displayed on the display unit 113 and determines which portion of the first image to be photographed is to be combined with the second image to make a panoramic image, ) Can be operated to determine the first area.

Next, the first image is photographed (S103). When the user wants to obtain a desired image, a shutter-release signal is input by depressing the shutter-release button 101 and the first image is captured under the control of the digital signal processing unit 129. [

Next, the data extracting unit 129-2 extracts the first projection data in the first area of the first image (S104). The first projection data is data representing a luminance value of a pixel existing in the first area. The data extracting unit 129-2 extracts a luminance value of pixels existing in the first area.

Thereafter, the second image is photographed (S105). The second image is photographed so as to be superimposed on the first image. The present invention automatically searches for a matching portion of the first image and the second image, so that the user may take a second image so that a portion of the first image overlaps.

Next, the search area setting unit 129-3 sets the search area in the second image (S106). The search area is a part of the second image to be compared with the first projection data, and the size of the search area is set larger than that of the first area.

Next, the searching unit 129-4 searches the second area having the second projection data with the smallest difference from the first projection data value in the search area (S106). More specifically, the search unit 129-4 sets a comparison area having the same size as the first area in the search area, extracts the comparative projection data of the comparison area, Compares the comparative projection data values and searches for a second area having a data value that minimizes a difference from the first projection data value in the comparison area.

The search unit 129-4 may normalize the first projection data and the projection data, and may compare the first projection data and the projection data.

A method of subtracting the projection data value from the first projection data value and a method of obtaining the standard deviation of the first projection data value and the projection data value are described in the method of searching for the second projection data having the smallest difference from the first projection data have.

The program for causing the digital image photographing apparatus to execute the control method of the digital image photographing apparatus according to the embodiments and modifications thereof may be stored in a recording medium. Here, the recording medium may be a storage unit 127 as shown in FIG. 2, or may be a separate recording medium. Here, the recording medium may be a storage medium such as a magnetic storage medium (e.g., ROM, floppy disk, hard disk, etc.) and an optical reading medium (e.g., CD-ROM, DVD (Digital Versatile Disc) .

It is intended that the present invention not be limited by the foregoing embodiments and the accompanying drawings, but rather by the appended claims, and that various changes, substitutions, and alterations can be made hereto without departing from the spirit of the invention as defined in the appended claims. It will be apparent to those skilled in the art that changes may be made.

1 is a front perspective view schematically showing a digital image processing apparatus according to an embodiment of the present invention.

2 is a rear view schematically showing the digital image processing apparatus of FIG.

3 is a block diagram schematically showing the configuration of the digital image processing apparatus of FIG.

4 is an image in which the first area is displayed in the first image.

5 is an image in which the search area is displayed in the second image.

6 shows a panoramic image combined with a first image and a second image.

7 is a flowchart illustrating a method of controlling a digital image photographing apparatus according to an exemplary embodiment of the present invention.

Description of the Related Art

100: Digital image processing apparatus 101: Shutter-release button

103: Power button 105: Flash

107: auxiliary light 109: lens part

113: display unit 121: user input unit

123: image pickup unit 125: image processing unit

129: digital signal processing unit 129-1: area setting unit

129-2: Data extracting unit 129-3: Search area searching unit

129-4; Search unit 129-5:

129-6:

Claims (18)

And a digital signal processing unit for generating a panoramic image by combining the first image and the second image taken from the digital image photographing apparatus, Wherein the digital signal processor comprises: An area setting unit setting a first area in a part of the first image; A data extracting unit for extracting first projection data in the first area; A search area setting unit for setting a search area to be compared with the first projection data in the second image; A search section for searching a second area having second projection data in which a difference from the first projection data within the search area becomes minimum; And And a combining unit for combining the first area of the first image and the second area of the second image to generate and display the panorama image. delete The method according to claim 1, Wherein the area setting unit can set the first area by a user. The method according to claim 1, Wherein the search area setting unit sets the search area to be larger than the first area. The method according to claim 1, The search unit sets a comparison region having the same size as the first region in the search region, extracts the comparative projection data of the comparison region, compares the difference between the comparative projection data and the first projection data And searches for the second area having the second projection data with a minimum difference from the first projection data. 6. The method of claim 5, Wherein the searching unit normalizes the first projection data and the comparison projection data and compares the normalized first projection data and the comparison projection data. 6. The method of claim 5, Wherein the search unit subtracts the comparison projection data value from the first projection data value to search for the second projection data with a minimum difference from the first projection data. 6. The method of claim 5, Wherein the search unit obtains a standard deviation of the first projection data value and the comparison projection data value to search for the second projection data having a minimum difference from the first projection data. 6. The method of claim 5, Wherein the first projection data, the second projection data, and the comparison projection data are data on a luminance value of pixels existing in a predetermined area of the image. A digital image photographing apparatus control method for generating a panoramic image by combining a first image and a second image taken from a digital image photographing apparatus, (a) setting a first area in a part of a preview image of the digital image photographing apparatus; (b) photographing the first image; (c) extracting first projection data in the first area; (d) photographing the second image; (e) setting a search area in a portion of the second image; (f) searching for a second area having second projection data in which a difference from the first projection data value in the search area is minimized; (g) combining the first area of the first image and the second area of the second image to generate and display the panorama image. 11. The method of claim 10, Wherein the step (a) sets the first area to a portion to which the second image is to be combined in the first image. 11. The method of claim 10, Wherein the step (e) sets the search area to be larger than the first area. 11. The method of claim 10, The step (f) (f1) setting a comparison area having the same size as the first area in the search area; (f2) extracting the comparative projection data of the comparison area; (f3) comparing the first projection data value and the comparison projection data value; And (f4) searching for a second region having the second projection data value in which a difference between the comparison region and the first projection data value is minimized. 14. The method of claim 13, Wherein the step (f3) normalizes the first projection data and the comparison projection data, and compares the normalized first projection data and the comparison projection data. 14. The method of claim 13, Wherein the step (f3) subtracts the comparison projection data value from the first projection data value to search for the second projection data having a minimum difference from the first projection data. 14. The method of claim 13, Wherein the step (f3) searches the second projection data for which a difference between the first projection data value and the first projection data is minimized by obtaining a standard deviation of the first projection data value and the comparison projection data value. 14. The method of claim 13, Wherein the first projection data, the second projection data, and the comparison projection data are data on a luminance value of pixels existing in a predetermined area of an image. A recording medium storing a program for executing the method of any one of claims 10 to 17.

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