KR101581223B1 - Digital photographing apparatus and method for controlling the same - Google Patents

Abstract

A digital photographing apparatus control method according to an embodiment of the present invention includes: searching for at least one candidate image; Displaying the retrieved at least one candidate image to provide a starting image selection user interface that allows a user to select, from the at least one candidate image, a starting image that is an image file to be played back for the first time in an image playback mode; Determining the candidate image selected by the user as the start image; And reproducing the start image.

Description

[0001] Digital photographing apparatus and method for controlling same [0001]

The present invention relates to a digital photographing apparatus and a control method thereof. More particularly, the present invention relates to a digital photographing apparatus and a control method thereof, in which when a user changes an operation mode of a digital photographing apparatus in a reproduction mode for reproducing a photographed image, And a control method thereof.

The digital photographing apparatus performs photographing, generates image files for the photographed images, and stores photographed images. The digital photographing apparatus can provide various operation modes such as a photographing mode, a reproduction mode, and a setting mode. The user can select the operation mode of the digital photographing apparatus to perform the desired operation. The photographing mode is an operation mode for generating a captured image from incident light in response to a shutter-release signal to perform photographing, and the reproduction mode is an operation mode for displaying photographed images on a display unit provided in the digital photographing apparatus, Is an operation mode in which the user can set one or more set values relating to the operation of the digital photographing apparatus.

In the playback mode, the digital photographing apparatus searches for stored image files in response to a user's input signal and displays the retrieved image files on the display unit. The user can select an image to be reproduced using a direction key or the like provided in the digital photographing apparatus, and the digital photographing apparatus can search and display an image file selected by the user from a data storing unit in which image files are stored.

The digital photographing apparatus performs processing such as analog-to-digital conversion and image compression on an electrical signal generated in the image pickup device, generates an image file, and stores the image file on a storage medium. The image files are generated in accordance with predetermined rules such as the DCF standard and can be sorted according to the file names.

It is an object of the present invention to provide a digital photographing apparatus and a control method thereof, in which a user can select a start image to be reproduced first when entering a reproduction mode.

A digital photographing apparatus control method according to an embodiment of the present invention includes: searching for at least one candidate image; Displaying the retrieved at least one candidate image to provide a starting image selection user interface that allows a user to select, from the at least one candidate image, a starting image that is an image file to be played back for the first time in an image playback mode; Determining the candidate image selected by the user as the start image; And reproducing the start image.

The at least one candidate image may be an image file that is first photographed and stored, and an image file that was last reproduced. The providing of the start image selection user interface may also include displaying a previous image file and a next image file for the last played image file together so that the user can select the previous image file and the next image file .

The digital photographing apparatus control method according to another embodiment of the present invention further includes the step of providing a candidate image management user interface in which a user can designate the at least one candidate image from stored image files, The candidate image may include image files designated by the user.

A digital photographing apparatus according to an embodiment of the present invention includes an image file storage unit storing at least one image file; A candidate image search unit for searching at least one candidate image from the image file storage unit; And displaying the retrieved at least one candidate image to allow a user to select, from the at least one candidate image, a start image that is an image file to be played back for the first time in an image playback mode; A start image determining unit that determines the candidate image selected by the user as the start image; And a display control unit for searching and reproducing the start image from the image file storage unit.

The digital photographing apparatus according to another embodiment of the present invention is characterized in that the digital photographing apparatus further includes a candidate image management user interface providing section in which a user can designate the at least one candidate image from the at least one image files, The at least one candidate image may include image files designated by the user.

According to the present invention, a digital photographing apparatus and a control method thereof, in which a user can select a start image, are provided, thereby enhancing the convenience of the user.

Embodiments of the present invention will now be described with reference to the accompanying drawings. The following description and accompanying drawings are for understanding the operation according to the present invention, and parts that can be easily implemented by those skilled in the art can be omitted.

Furthermore, the specification and drawings are not intended to limit the present invention, and the scope of the present invention should be determined by the claims. The terms used in the present specification should be construed to mean the meanings and concepts consistent with the technical idea of the present invention in order to best express the present invention.

Embodiments of the present invention will now be described with reference to the accompanying drawings.

1 is a diagram showing a schematic structure of a digital photographing apparatus according to an embodiment of the present invention.

The digital photographing apparatus 100 according to an embodiment of the present invention includes a lens 110, a lens driver 111, a diaphragm 112, a diaphragm driver 113, an image sensor 115, an image sensor controller 116, And may include an analog signal processing unit 120, a program storage unit 130, a buffer storage unit 140, a data storage unit 150, a display unit 160, a digital signal processing unit 170, have.

The lens 110 condenses the optical signal. The lens 110 includes a zoom lens for controlling the angle of view to be narrowed or widened according to the focal length, a focus lens for focusing the subject, etc. These lenses may be each composed of one lens, And may be a group of a plurality of lenses.

The diaphragm 112 adjusts the degree of opening and closing thereof to adjust the amount of incident light.

The lens driving unit 111 and the diaphragm driving unit 113 receive a control signal from the digital signal processing unit 170 and drive the lens 110 and the diaphragm 112, respectively. The lens driving unit 111 adjusts the position of the lens to adjust the focal length, and performs operations of auto focusing, zoom change, and focus change. The diaphragm driving unit 113 performs operations such as autofocus, automatic exposure correction, focus change, and depth-of-field adjustment by adjusting the opening / closing degree of the diaphragm, in particular, the f-number.

The optical signal transmitted through the optical unit 110 reaches the light-receiving surface of the image pickup element 115 to form an image of the object. The image pickup device 115 may be a charge coupled device (CCD) or a complementary metal oxide semiconductor image sensor (CIS) for converting an optical signal into an electric signal. The sensitivity of the image pickup device 115 can be adjusted by the image pickup device control unit 116. The image pickup element control unit 116 can control the image pickup element 115 in accordance with a control signal automatically generated by the video signal inputted in real time or a control signal manually inputted by the user's operation.

The exposure time of the imaging element 115 is adjusted by a shutter (not shown). The shutter has a mechanical shutter for moving the screen to adjust the incidence of light, and an electronic shutter for controlling exposure by supplying an electric signal to the imaging element 115.

The analog signal processing unit 120 performs noise reduction processing, gain adjustment, waveform shaping, and analog-to-digital conversion processing on the analog signal supplied from the image pickup element 115.

The operation unit 180 is a place where a control signal from the outside such as a user can be input. The operation unit 180 includes a shutter-release button for inputting a shutter-release signal for photographing a photograph by exposing the image pickup device 115 to light for a predetermined period of time, a power source for inputting a control signal for controlling on- Button, a wide-angle zoom button and a telephoto-zoom button to widen the angle of view according to the input or narrow the angle of view, a mode selection such as character input, shooting mode, playback mode, white balance setting function, And the like. The operation unit 180 may have various types of buttons as described above, but the present invention is not limited thereto. The operation unit 180 may be implemented in any form such as a keyboard, a touch pad, a touch screen, and a remote controller.

The digital photographing apparatus 100 may further include a program storage unit 130 for storing programs such as an operating system and an application system for driving the digital camera, a buffer storage unit for temporarily storing data or result data required during the operation, (140), and a data storage unit (150) for storing various information necessary for the program, including an image file including a video signal.

In addition, the digital photographing apparatus 100 includes a display unit 160 for displaying the operation state of the digital photographing apparatus 100 or the image information photographed by the digital photographing apparatus 100. The display unit 160 may provide visual and / or auditory information to the user. For example, the display unit 160 may include a liquid crystal display panel (LCD), an organic light emitting display panel (OLED), or the like in order to provide visual information.

The digital photographing apparatus 100 includes a digital signal processing unit 170 that processes input image signals and controls each of the components according to an external input signal. The digital signal processing unit 170 reduces noise for input image data and performs gamma correction, color filter array interpolation, color matrix, color correction, , Color enhancement, and the like can be performed. Also, the image data generated by the image signal processing for image quality improvement may be compressed to generate an image file, or the image data may be recovered from the image file. The compression format of the image may be reversible or irreversible. As an example of a suitable format, conversion to JPEG (Joint Photographic Experts Group) format or JPEG 2000 format is also possible. And may be stored in the compressed data storage unit 150. Also, the digital signal processing section 20 can functionally perform blurring processing, color tone processing, blur processing, edge emphasis processing, image analysis processing, image recognition processing, image effect processing, and the like. The face recognizing process, the scene recognizing process, and the like can be performed by the image recognizing process. In addition, the digital signal processing unit 170 may perform display video signal processing for display on the display unit 160. FIG. For example, brightness level adjustment, color correction, contrast adjustment, contour enhancement adjustment, screen division processing, character image generation, and image synthesis processing can be performed. The digital signal processing unit 170 may be connected to an external monitor to process a predetermined image signal to be displayed on an external monitor and transmit the processed image data to display the corresponding image on the external monitor.

The digital signal processor 170 may also execute a program stored in the program storage unit 130 or may include a separate module to generate a control signal for controlling autofocus, zoom change, focus change, automatic exposure correction, and the like The lens driving unit 111, the diaphragm driving unit 113 and the imaging device control unit 116 so that the operation of the components of the digital imaging device 100 such as the shutter and the flash can be collectively controlled.

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

According to an embodiment of the present invention, the user can select a start image to be reproduced first in the playback mode from among the first captured image file and the last played image file.

First, when the operation mode of the digital photographing apparatus is changed from the other operation mode to the reproduction mode, the digital photographing apparatus control method according to the present embodiment determines whether or not the image file (hereinafter, ) And the last played image file (hereinafter, referred to as 'last playback image') (S202). The file name or address of the first shot image and the last playback image may be stored in a separately allocated storage space and the first shot image and the last playback image may be searched using the stored file name or address. Alternatively, the operation of searching for the first shot image may be performed by searching the first image file among the image files sorted according to the file name.

Next, a start image selection user interface may be provided to display the first shot image and the last playback image, and allow the user to select either the first shot image or the last playback image (S204).

Figure 3 is an illustration of an exemplary image of a launch image selection user interface in accordance with one embodiment of the present invention. The start image selection user interface may display the first shot image (0001.jpg) and the last playback image (0120.jpg) in a form that the user can select. Also, the start image selection user interface may display the previous image file (0119.jpg) and the next image file (0121.jpg) of the last playback image together, as shown in FIG. 3, File and the next image file. However, Figure 3 is merely an illustrative illustration of the start image user interface, and the form of the start image user interface is not limited to that shown in Figure 3. [

When the user selects one candidate image through the start image selection user interface, the candidate image selected by the user is determined as the start image (S206).

Next, playback of the image file starts from the start image (S208). When the reproduction of the image file is started, the user can control reproduction of the image file by using direction keys or the like.

While the image files are being reproduced, the digital photographing apparatus control method according to the present embodiment updates the currently reproduced image file to the last reproduced image (S210). For example, if the file name or address of the last playback image is stored in a separately allocated storage space, the file name or address of the last playback image stored in the storage space is continuously updated during playback of the image files.

4 is a diagram illustrating a digital photographing apparatus control method according to another embodiment of the present invention.

According to another embodiment of the present invention, a user can directly specify a candidate image which is a candidate group for the start image displayed on the start image selection user interface.

In the digital photographing apparatus control method according to the present embodiment, when the operation mode of the digital photographing apparatus is changed to the reproduction mode, at least one candidate image is searched (S402). The at least one candidate image may include images that the user has designated using the candidate image management user interface. The at least one candidate image may also include a first shot image and a last shot image. The operation of searching for the candidate image may vary depending on the manner of managing the at least one candidate image.

5 is a diagram illustrating an embodiment of a method for managing at least one candidate images.

The information on the at least one candidate images may be stored and managed in a separately allocated storage space. For example, the file name or address of the at least one candidate images may be stored in the separately allocated storage space. The separately allocated storage space may also be updated each time a user adds or removes at least one candidate image.

If the at least one candidate image is managed according to the present embodiment, the step (S402) of searching the at least one candidate image may use information about the at least one candidate image stored in the separately allocated storage space To search for the at least one candidate image.

6 is a diagram illustrating another embodiment of a method for managing at least one candidate images.

Each of the image files may include a candidate image marker indicating whether or not they are candidate images. For example, as shown in FIG. 6, each image file may have a bookmark value as a candidate image marker in the header. The bookmark value may have a value of 1 if the image file is a candidate image and a value of 0 if the image file is not a candidate image. At this time, the information about the first shot image and the last playback image may be stored in a separate storage space.

If each of the image files has the candidate image mark according to the present embodiment, the step (S402) of searching the at least one candidate image is to search the candidate image markers of the respective stored image files, Quot; candidate image "

When the at least one candidate image is retrieved (S402), a start image selection user interface may be provided that displays the at least one candidate image and allows the user to select any of the at least one candidate image.

7 is a diagram illustrating an exemplary view of a start image selection user interface according to another embodiment of the present invention. The start image selection user interface according to the present embodiment includes user-specified candidate images (user specified 1 (0002.jpg), user specified 2 (0007.jpg)), the last playback image (0120.jpg) The captured image (0001.jpg) can be displayed in a form selectable by the user. Also, the start image selection user interface displays the previous image file and the next image file together for each of the image files designated by the user as shown in Fig. 7, and displays the previous image file 0119.jpg ) And the next image file (0121.jpg) may be displayed together so that the user can select any of the previous image files and the next image files. However, Fig. 7 is merely an exemplary view of the start image user interface, and the form of the start image user interface according to the present embodiment is not limited to the form shown in Fig.

Also, when the previous image file and the next image file are searched and displayed together, it is possible to search for the previous image file and the next image file excluding all of the continuously photographed image files. For example, in the case of an image file in which a user-specified 1-image file 0002.jpg, which is a candidate image designated by the user, is an image file continuously shot, and an image file continuously shot from an image file 0002.jpg to an image file 0005.jpg, Instead of the next image file 0003.jpg, the image file 0006.jpg can be searched and displayed as the next image. Whether or not the image file is continuously photographed can be obtained by using the information included in the header of each image file.

When the user selects one of the image files through the start image selection user interface, the image file selected by the user is determined as the start image (S406). Next, playback of the image file is started from the start image (S408).

While the image files are being reproduced, the digital photographing apparatus control method updates the currently reproduced image file to the last reproduced image (S410). For example, if the file name or address of the last playback image is stored in a separately allocated storage space, the file name or address of the last playback image stored in the separately allocated storage space is updated. The information on the last reproduction image can be updated each time the image file is reproduced. Alternatively, when the operation mode of the digital photographing apparatus is changed from the reproduction mode to the other operation mode, information on the last reproduction image may be updated.

While the image files are being reproduced, the digital photographing apparatus control method according to the present embodiment provides a candidate image management user interface in which the user can designate the at least one candidate image (S412). For example, the user may add a currently playing image file to a candidate image by inputting a control signal through the candidate image management user interface to add the currently playing image file as a candidate image.

If the user adds an arbitrary image file as a candidate image, the information about the at least one candidate image is updated (S414). Also, through the candidate image management user interface, the information about the at least one candidate image may be updated when the user removes at least one from the at least one candidate image. The manner of updating the information about the at least one candidate image depends on the manner of managing the at least one candidate image.

As shown in FIG. 5, in the case of managing the at least one candidate image by allocating a separate storage space, information about the image file added by the user as a candidate image is added to the separately allocated storage space, The information on the candidate image that has been removed may be removed from the separately allocated storage space.

As shown in FIG. 6, whenever the image file includes candidate image marks, the candidate image markers of the image files to be added or removed are updated each time the user adds or removes the candidate images. That is, when the user adds an image file as a candidate image, the bookmark value of the added image file is updated from 0 to 1. When the user removes the candidate image, the bookmark value of the removed image file is changed from 1 to 0 Can be updated.

8 is a diagram illustrating the structure of a digital photographing apparatus according to an embodiment of the present invention.

The image file storage unit 150a stores the photographed image files. The image file storage unit 150a may be embodied in the data storage unit 150a, for example, and may use various storage media such as a flash memory and a memory card.

The digital signal processing unit 170a of the digital photographing apparatus 100a according to an embodiment of the present invention includes a control unit 810, a candidate image search unit 820a, a start image selection user interface providing unit 830a, A display unit 840, and a display control unit 850.

The control unit 810 controls the operation of the entire digital photographing apparatus 100a. For example, a control signal for controlling autofocus, zoom change, focus change, automatic exposure correction, and the like is generated and provided to the lens driving unit 111, the iris driving unit 113, and the imaging device control unit 116, Shutter, flash, and other components of the digital photographing apparatus 100a can be collectively controlled.

The candidate image search unit 820a searches for the first shot image and the last shot image when the operation mode of the digital photographing apparatus 100a is changed from the other operation mode to the playback mode. The file name or address of the first shot image and the last playback image may be stored in a separately allocated storage space and the first shot image and the last playback image may be retrieved from the image file storage unit 150a using the stored file name or address can do. Alternatively, the operation of searching for the first shot image may be performed by searching the first image file among the image files sorted according to the file name.

The start image selection user interface providing unit 830a displays a first shot image and a last playback image, and provides a start image selection user interface that allows a user to select either the first shot image or the last playback image do. For example, the start image selection user interface may be provided as shown in FIG.

The start image determining unit 840 determines a candidate image selected by the user through the start image selecting user interface as a start image.

The display control unit 850 starts playback of the image files from the start image. The display control unit 850 searches the image file storage unit 150a for the image file corresponding to the start image using the information about the start image provided from the start image determination unit 840, can do.

9 is a diagram illustrating a structure of a digital photographing apparatus according to another embodiment of the present invention.

The digital signal processing unit 170b of the digital photographing apparatus 100b according to another embodiment of the present invention includes a control unit 810, a candidate image search unit 820b, a start image selection user interface providing unit 830b, A display control unit 840, a display control unit 850, and a candidate image management user interface providing unit 910.

The candidate image search unit 820b according to the present embodiment can search at least one candidate image from the image file storage unit 150a. The at least one candidate image may include images that the user has designated using the candidate image management user interface. The at least one candidate image may also include a first shot image and a last shot image. The operation of searching for the candidate image may vary depending on the manner of managing the at least one candidate image.

5, when the at least one candidate image is managed by allocating a separate storage space, the digital photographing apparatus 100b according to the present embodiment may store information about the at least one candidate images And a candidate image storage unit 150b separately allocated for storing the candidate image. The candidate image storage unit 150b may be a storage space allocated to the data storage unit 150. [ In this case, the candidate image search unit 820b searches the image file storage unit 150a for the at least one candidate image using the information about the at least one candidate image stored in the candidate image storage unit 150b .

6, when each image file includes a candidate image mark, the candidate image search unit 820b searches the candidate image markers of the image files stored in the image file storage unit 150a , And retrieve the at least one candidate image. At this time, information about the first shot image and the last playback image may be stored in the candidate image storage unit 150b.

The start image selection user interface providing unit 830b displays the at least one candidate image retrieved from the candidate image retrieving unit 820b and displays a start image selecting user 820b which allows a user to select any one of the at least one candidate image. Interface. The user can select any one of the at least one candidate image using an operation key or the like provided on the operation unit 180. [

The start image selection user interface according to the present embodiment may be provided, for example, as described above with reference to FIG. In addition, when the previous image file and the next image file are searched for and displayed together with the image files specified by the user, the previous image file and the next image file can be searched for, excluding all of the continuously photographed image files .

The candidate image management user interface providing unit 910 provides a candidate image management user interface through which the user can specify the at least one candidate image while the image files are being played back. The candidate image management user interface providing unit 910 updates the information on the at least one candidate image when the user adds an arbitrary image file as a candidate image or removes at least one from the at least one candidate image . The manner of updating the information about the at least one candidate image depends on the manner of managing the at least one candidate image.

5, in the case of managing the at least one candidate image by allocating a separate storage space, the candidate image management user interface providing unit 910 supplies information about the image file added by the user as a candidate image It may be added to the candidate image storage unit 150b, or information about the candidate image removed by the user may be removed from the candidate image storage unit 150b.

6, when each image file includes a candidate image cover, the candidate image management user interface providing unit 910 supplies an image file to be added or removed every time the user adds or removes a candidate image, And updates the candidate image mark. That is, when the user adds an image file as a candidate image, the bookmark value of the added image file is updated from 0 to 1. When the user removes the candidate image, the bookmark value of the removed image file is changed from 1 to 0 Can be updated.

The present invention has been described above with reference to preferred embodiments. It will be understood by those skilled in the art that the present invention may be embodied in various other forms without departing from the spirit or essential characteristics thereof. Therefore, the above-described embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and the inventions claimed by the claims and the inventions equivalent to the claimed invention are to be construed as being included in the present invention.

1 is a diagram showing a schematic structure of a digital photographing apparatus according to an embodiment of the present invention.

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

Figure 3 is an illustration of an exemplary image of a launch image selection user interface in accordance with one embodiment of the present invention.

4 is a diagram illustrating a digital photographing apparatus control method according to another embodiment of the present invention.

5 is a diagram illustrating an embodiment of a method for managing at least one candidate images.

6 is a diagram illustrating another embodiment of a method for managing at least one candidate images.

7 is a diagram illustrating an exemplary view of a start image selection user interface according to another embodiment of the present invention.

8 is a diagram illustrating the structure of a digital photographing apparatus according to an embodiment of the present invention.

9 is a diagram illustrating a structure of a digital photographing apparatus according to another embodiment of the present invention.

Claims (20)

Retrieving at least one candidate image; Displaying the retrieved at least one candidate image to provide a starting image selection user interface that allows a user to select, from the at least one candidate image, a starting image that is an image file to be played back for the first time in an image playback mode; Determining the candidate image selected by the user as the start image; And And reproducing the start image, Wherein the at least one candidate image comprises an image file that is first captured and stored and an image file that was last reproduced, Wherein providing the start image selection user interface includes displaying a previous image file and a next image file for the last played image file together so that the user can select the previous image file and the next image file , And a digital photographing apparatus control method. delete delete The method according to claim 1, The digital photographing apparatus control method further comprises the step of providing a candidate image management user interface in which the user can designate the at least one candidate image from stored image files, Wherein the at least one candidate image comprises image files designated by the user. 5. The method of claim 4, Wherein the at least one candidate image further comprises an image file that is first captured and stored and an image file that was last reproduced. 5. The method of claim 4, Wherein the providing of the start image selection user interface comprises: retrieving and displaying a previous image file and a next image file for each of the image files designated by the user, and displaying the previous image file and the next image file The method comprising the steps of: The method as claimed in claim 6, wherein the step of searching for the at least one candidate image comprises the steps of: if the previous image file or the next image file is an image file in which consecutive images are taken, And searching for the next image file. 5. The method of claim 4, Storing information on at least one candidate image designated by the user in a candidate image storage space, Wherein the searching for the at least one candidate image retrieves the at least one candidate image using information about the at least one candidate image stored in the candidate image storage space. 5. The method of claim 4, Wherein the stored image files include a candidate image marker indicating whether the image file is a candidate image, Further comprising updating the candidate image marker of the at least one candidate image if the user specifies the at least one candidate image, Wherein retrieving the at least one candidate image retrieves the candidate image cover for each of the stored image files to retrieve the at least one candidate image. 5. The method of claim 4, Further comprising the step of removing a candidate image selected by the user from the at least one candidate image. An image file storage unit for storing at least one image file; A candidate image search unit for searching at least one candidate image from the image file storage unit; And displaying the retrieved at least one candidate image to allow a user to select, from the at least one candidate image, a start image that is an image file to be played back for the first time in an image playback mode; A start image determining unit that determines the candidate image selected by the user as the start image; And And a display control unit for retrieving and reproducing the start image from the image file storage unit, Wherein the at least one candidate image comprises an image file that is first captured and stored and an image file that was last reproduced, Wherein the start image selection user interface providing unit displays the previous image file and the next image file for the last played image file so that the user can select the previous image file and the next image file, Device. delete delete 12. The method of claim 11, Wherein the digital photographing apparatus further comprises a candidate image management user interface provision unit in which a user can designate the at least one candidate image from the at least one image files, Wherein the at least one candidate image comprises image files designated by the user. 15. The method of claim 14, Wherein the at least one candidate image further comprises an image file that is first captured and stored and an image file that was last reproduced. 15. The method of claim 14, Wherein the start image selection user interface providing unit searches for and displays a previous image file and a next image file for each of the image files designated by the user so that the user can select the previous image file and the next image file , Digital photographing apparatus. The image processing apparatus according to claim 16, wherein the candidate image search unit searches for the previous image file or the next image file except for the continuously photographed image file, when the previous image file or the next image file is an image file in which consecutive images are taken , Digital photographing apparatus. 15. The method of claim 14, Further comprising a candidate image storage unit for storing information on at least one candidate image designated by the user, Wherein the candidate image management user interface providing unit stores information on at least one candidate image designated by the user in the candidate image storing unit when the user designates at least one candidate image, Wherein the candidate image searching unit searches the at least one candidate image using information on the at least one candidate image stored in the candidate image storing unit. 15. The method of claim 14, Wherein the at least one image file comprises a candidate image marker indicating whether the image is a candidate image, Wherein the candidate image management user interface providing unit updates the candidate image mark of at least one image file designated by the user when the user designates the at least one candidate image, And the candidate image searching unit searches the candidate image markers for each of the at least one image files to search for the at least one candidate image. 15. The method of claim 14, Wherein the candidate image management user interface providing unit removes a candidate image selected by the user from the at least one candidate image.

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