KR102022559B1 - Method and computer program for photographing image without background and taking composite photograph using digital dual-camera - Google Patents

Abstract

Disclosed are a background-free image capturing using a dual camera and a capturing method of composite images using the same. According to the present invention, the capturing method comprises the following steps: when a capturing is requested from a user, analyzing a plurality of images captured by a plurality of cameras to generate a depth map; using the depth map to identify one or more part images forming an image; displaying a user interface capable of identifying and selecting one or more part images as a live view image on a main image displayed on a screen of a digital capturing device; receiving a user input through the user interface; and when an image saving is requested from a user, generating a photo, as a new main image, from which a part image selected and removed from the main image is deleted, according to a user input through the user interface to save the same in a storage unit. Accordingly, the present invention can capture a photo in real time which contains a desirable object only by means of identification of outlines of each object and selection, without any editing processes.

Description

Backgroundless image capture using dual cameras and method and computer program using it {Method and computer program for photographing image without background and taking composite photograph using digital dual-camera}

The present invention relates to a method of capturing a photograph in a digital photographing apparatus, and more specifically, a photograph in which a background is deleted or another photograph is synthesized by using images acquired through a plurality of cameras without a separate editing process after photographing. The present invention relates to an image capturing method and a computer program for capturing images in real time.

The dual cameras in the latest mobile phones are camera modules for smartphones with two camera lenses. Shooting with two lenses improves the quality of photographs, acquires photos with different angles of view, utilizes accurate facial recognition (depth beyond length) for security or AI (Artificial Intelligence) object recognition, or 3D By generating images, the effects of virtual reality and augmented reality can be realized.

On the other hand, the word "누" is a Japanese word for "subtract" refers to the printing method to color the background without the color, and to remove the parts that are not necessary to print only the necessary subject. In the graphic design work, we use the expression 'picking up locusts', which is to remove only the necessary subjects from an image with a background, such as Photoshop, to remove the background.

However, it is necessary not only to have professional skills but also to take a lot of time and effort even for graphic professionals, and to take pictures by editing them using graphic editing software such as Photoshop. The average user who takes a picture does not have expensive graphic editing software and it is difficult to perform graphic editing.

In addition, you cannot directly use the captured image as a design source for emoticons, icons, design synthesis, etc. without processing and editing the captured image separately.

The present invention is to solve the problems of the prior art as described above, after taking a picture in a digital photographing device having a plurality of cameras can be taken in real time as a picture without the background image only the object desired by the user without a separate editing process. It is to provide a video recording method.

In addition, the present invention captures the contour of each object in the digital photographing device having a plurality of cameras after taking a picture without a separate editing process, and allows the user to shoot in real time to take a picture containing the selected objects included in real time It is to provide.

The present invention also provides a method of erasing partial images, such as a background, that are not desired by a user from images captured by a plurality of rear cameras, and synthesizing another shot image or graphic image on the erased background portion to provide a method of capturing real-time images. will be.

In addition, the present invention is to provide an image capturing method capable of erasing a partial image, such as a background, that is not desired by a user from an image photographed by a plurality of rear cameras and combining the front image captured by a front camera.

In order to achieve the above object, according to an embodiment of the present invention, a background-free image recording using a dual camera and a composite photo recording method using the same, when photographing is requested from the user, the camera photographed through the plurality of cameras Generating a depth map by analyzing a plurality of images; Determining at least one partial image constituting an image using the depth map; Displaying a user interface for classifying and selecting the one or more partial images as a live view image on the main image displayed on the screen of the digital photographing apparatus; Receiving a user input via the user interface; If the user is requested to save a photo, generating a new main image stored in the storage unit by deleting a partial image selected and excluded from the main image according to a user input through the user interface; have.

The storing may include storing a picture obtained by deleting the selected partial image and another picture selected by the user as a main image.

The storing may include storing a picture obtained by deleting the partial excluded image and a picture obtained by synthesizing an image taken by the front camera of the terminal as a main image.

The storing may include storing an original main image including a partial image not selected by the user together as a layer of the new main image.

In the depth map generation step, when the plurality of cameras have different angles of view, the image photographed by the wide-angle camera so that the horizontal or vertical size of the same object included in the plurality of images photographed by the plurality of cameras is the same. After cropping, determining a separation distance between the same objects in the plurality of images.

The photographing method may further include: reading and displaying a picture from which the partial image selected and excluded by the user is deleted from the storage unit; The method may further include obtaining a photograph obtained by synthesizing an image photographed by one of the plurality of cameras into a background image of the displayed nucleus image.

The photographing method may further include recognizing a face of a subject in the plurality of partial images selected through the user interface and automatically adjusting the sizes of the selected partial images so that the sizes of the recognized faces are similar to each other. .

According to the present invention, after taking a picture in a digital photographing device having a plurality of cameras, it is possible to grasp the outline of each object without a separate editing process and to take a picture in which only a desired object is selected and included in real time.

In addition, according to the present invention, a part of the image captured by the plurality of rear cameras may be erased in real time.

Alternatively, the user may store an image of a portion which is not desired by the user in a state of being erased, and then take a pre-stored image by synthesizing the stored image in real time.

At this time, by recognizing the face of the subject and automatically adjusts the sizes so that the size of the recognized faces are similar to each other, real-time shooting of natural composite pictures is possible without a sense of heterogeneity.

1 is a block diagram illustrating a structure of a digital photographing apparatus according to an exemplary embodiment of the present invention.
2 is a view for explaining the camera configuration of the digital photographing apparatus according to an embodiment of the present invention.
3 is a flowchart illustrating a method of synthesizing an image in real time in a digital photographing apparatus according to an embodiment of the present invention.
4 is a view for explaining the operation of the digital photographing apparatus according to an embodiment of the present invention.
5 is a diagram for describing an image of photographing subjects by two cameras having the same angle of view according to an exemplary embodiment of the present invention.
FIG. 6 is a diagram illustrating an image of photographing subjects by two cameras having different angles of view according to an exemplary embodiment of the present invention.
7 illustrates a screen for selecting or excluding a user interface and a partial image desired by a user according to an embodiment of the present invention.
8 illustrates a screen for pre-editing a captured image according to an embodiment of the present invention.
9 is a view for explaining an operation of taking a picture with a plurality of cameras including a front camera according to an embodiment of the present invention.
10 illustrates a screen for synthesizing an image photographed by a front camera and an image photographed by a rear camera according to an embodiment of the present invention.

Terms used herein will be briefly described and the present invention will be described in detail.

The terms used in the present invention have been selected as widely used general terms as possible in consideration of the functions in the present invention, but this may vary according to the intention or precedent of the person skilled in the art, the emergence of new technologies and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents throughout the present invention, rather than the names of the simple terms.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, the terms "... means", "... unit", "module", etc. described in the specification mean a unit for processing at least one function or operation, which may be implemented in hardware or software, or hardware and software. It can be implemented as a combination of.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

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

Referring to FIG. 1, the digital photographing apparatus 100 may include a camera 110, a processor 120, a display 130, and a memory 140.

The digital photographing apparatus 100 may include a smartphone, a tablet personal computer, a camera, and a wearable device. However, the digital photographing apparatus 100 is not limited thereto and may include any device capable of generating an image by photographing a subject including a lens and an image sensor.

The camera 110 may include a plurality of cameras. Here, the camera includes at least one lens and an image sensor, and refers to a component that acquires an image signal through the image sensor. Although FIG. 1 illustrates that three cameras are provided, the present invention is not limited thereto, and the image capturing method of the present invention may be implemented in a digital photographing apparatus equipped with two or more cameras.

In one embodiment, the camera 110 may include a first camera 111 and a second camera 112, which are rear cameras, and may further include a third camera 113, which is a front camera, in another embodiment.

In an embodiment, the first camera 111 and the second camera 112 may be cameras having lenses having different angles of view. For example, the first camera 111 may be a wide angle camera having a wide angle lens to acquire a wide angle image including a main subject, and the second camera may be a telephoto camera having a telephoto lens. In another embodiment, the first camera 111 and the second camera 112, which are rear cameras, may be cameras having lenses having the same angle of view. Alternatively, the first camera 111 may be a color image, and the second camera 112 may be a camera that photographs a black and white image.

The processor 120 may control the camera 110, the display 130, and the memory 140 connected to the processor 120, and may perform various data processing and operations. The processor 120 may be implemented with, for example, a system on chip (SoC). The processor 120 may further include a graphic processing unit (GPU) and / or an image signal processor.

The processor 120 acquires depth information of objects (subjects) included in the image based on the plurality of images captured by the first camera 111 and the second camera 112, and uses the depth map as a depth map. map).

In addition, the processor 120 may obtain information about a global motion and a local motion of the image. Accordingly, the processor 120 may acquire a depth map after correcting blur due to movement or hand movement of the main subject in the image.

The processor 120 determines one of the images captured by the plurality of cameras 110 as the main image or an image generated by using the plurality of images as the main image, and based on the obtained depth map. One or more partial images (each object, background, etc.) constituting the main image may be distinguished from each other.

The processor 120 may control the display 130 to display the main image as a live view image. In addition, the processor 120 may display a user interface superimposed on the main image to distinguish partial images constituting the main image and to select or delete a desired partial image.

The memory 140 may include an internal memory or an external memory. The memory 140 is a storage unit capable of storing the main image under the control of the processor 120, and stores the pre-edited image as the main image when the photographing button is clicked through the user interface. In addition, under the control of the processor 120, the original main image may be stored together as a layer in addition to the edited main image.

The processor 120 may execute a dedicated application stored in the memory 140 to perform an image capturing method according to various embodiments of the present disclosure, and the image capturing method performed by the dedicated application with reference to FIGS. 2 to 10 below. Will be described.

2 is a view for explaining the camera configuration of the digital photographing apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the digital photographing apparatus may include two rear cameras 210 and 220 on the rear side and one front camera 230 on the front side, under the control of a dedicated application executed by the processor. At least two cameras among the cameras 210, 220, and 230 may be used to acquire a picture desired by the user.

The digital photographing apparatus determines the depth from the images captured by the plurality of rear cameras 210 and 220 by using the coordinate difference of the same object, divides each object and the background according to the depth, and then captures the captured image as the main image. As a result, a user interface for receiving a user's edit input may be displayed and stored to obtain a modified picture according to the user's intention before storing in the memory.

In this case, the user deletes a background or some object or an image obtained by synthesizing a plurality of images in real time, and then stores the image in real time.

According to an embodiment, the digital photographing apparatus may delete a background or some object from the images photographed by the plurality of rear cameras 210 and 220 or replace the pre-stored image with some images. Accordingly, the user may take a picture without a background or leave only the object selected by the user, and take a picture erased from the remaining objects. Alternatively, the user may acquire a photo synthesized in real time with another background image previously stored in the object selected by the user.

In one embodiment, the digital photographing apparatus synthesizes a pre-edited image of the image captured by the plurality of rear cameras 210 and 220 in real time with the image captured by the front camera 230 to include only the object selected by the user. can do.

3 is a flowchart illustrating a method of capturing an image in real time in a digital photographing apparatus according to an embodiment of the present invention.

In step S31, a picture taking request is received from a user of a digital photographing apparatus including a plurality of cameras. The photographing request corresponds to camera preparation, and when a user selects a camera icon or requests to prepare for photographing through a dedicated application, images are respectively taken from the plurality of rear cameras. An image generated based on one or a plurality of images photographed by the plurality of rear cameras is determined as the main image, and the following steps for image synthesis according to a user's input will be performed.

In step S32, a plurality of images captured by the plurality of cameras are analyzed to generate a depth map. The distance information of the subject may be detected using a stereo image, a histogram, pixel values, and other physical methods, and a depth map may be generated using the same. The depth map image may be obtained through passive depth sensing and stereo matching obtained using two or more cameras.

For example, stereo matching using stereo images obtained from two cameras acquires a wide-angle image including a main subject from a first camera and a telephoto image obtained by zooming a main subject from a second camera. Based on these wide-angle images and telephoto images, distance information of the main subject is detected and a depth map is generated based on the distance information.

4 is a view for explaining the operation of the digital photographing apparatus according to an embodiment of the present invention.

Referring to FIG. 4, since the plurality of rear cameras 410 and 420 are spaced apart at regular intervals, the positions (distances) of the objects that are the subjects 430 may be accurately determined using the captured images of the cameras.

In step S33, one or more partial images constituting the entire image are determined using the depth map. The partial image may include a background, an object (subject), and the like. Separation of each object or background can be basically performed using the depth map, but precision can be obtained by using brightness, color, contrast, negative image and black and white image as secondary indicators. It can increase. That is, when the distance to the subject is close to each other by a certain distance or more, the distinction of the outline is unclear, and the flat graphic can be extracted by combining and using color information and brightness information, and the noise of each subject generated can be extracted. By eliminating (loss correction), it is possible to accurately distinguish the outline shape of each object image.

5 is a diagram for describing an image of photographing subjects by two cameras having the same angle of view according to an exemplary embodiment of the present invention.

Through comparison of the separation distances in the left and right images, the same part may be determined as the background, the smallest pixel difference is a far object, and the large pixel difference is a close object. At this time, those with similar pixel differences within a threshold may be determined as inseparable and identical objects.

FIG. 6 is a diagram illustrating an image of photographing subjects by two cameras having different angles of view according to an exemplary embodiment of the present invention.

If the cameras have different angles of view, the images taken at wide angles may be cropped to match the size of the other images before the respective images are compared and the depth map is generated. Referring to FIG. 6, since the image of (a) is captured by a wide-angle camera, (b) the cropped portion 600 of the image is cropped after the cropped portion 600 of the image to have the same size as the object in the image ( 600) and (b) compare and analyze the image to generate a depth map.

In an embodiment, the dedicated application for performing the image synthesizing method collects basic array direction information of the camera lens and information about whether the picture is taken vertically or horizontally when the picture is taken. Since the camera lens is normally arranged left and right of the terminal, it is set to be arranged left and right by default, and whether the object is counted horizontally or vertically by the gravity sensor when taking a picture vertically or horizontally by a gravity sensor. You can decide whether to count.

In this way, the contour of each object can be obtained by dividing the object according to the depth, and the background part can be obtained by distinguishing it. As described above, each object or background separated from the image is a partial image of the image and may be selected or excluded by the user.

In step S34 of FIG. 3, a user interface for distinguishing and selecting partial images is displayed on the main image displayed on the screen of the digital photographing apparatus. In this case, the main image and the user interface overlaid thereon may be displayed as a live view image.

The user interface includes an outline of each partial image and when the user selects or unselects a desired partial image, the entire object or background corresponding to the point touched by the user is selected or excluded based on the outline. Will be erased.

In step S35 of FIG. 3, an edit input is received from a user through the user interface. The user may select or exclude one or more of the desired background and objects displayed on the main image, and dynamically change the image on the screen by reflecting the selection or deletion of the partial image in real time according to a user's input. That is, in the present invention, the main image, the depth map, the contour image, the nucleus image, a composite image of the nucleus image, and the like may be displayed as a live view image.

Meanwhile, the plurality of partial images selected through the user interface may recognize the face of the subject and automatically adjust and display the selected partial images so that the sizes of the recognized faces are similar to each other. For example, if a user selects a person's figure and a Lego doll, but the person's face size is different from the Lego doll's face size, the Lego doll can be enlarged or the person's figure is automatically scaled to match the two subjects. .

7 illustrates a screen for selecting or excluding a user interface and a partial image desired by a user according to an embodiment of the present invention.

Referring to FIG. 7, an outline of each object is displayed to allow a user to distinguish selectable partial images 710, 720, 730, and 740, and to select or erase a desired object or background according to a user's touch input. User interface is displayed on the main image. In this case, each object may be displayed by differently applying color, contrast, and blur.

When the dedicated application receives a first user input (for example, 710 touch) on a predetermined object, the corresponding application is selected and included in the final main image, and when a second user input (for example, 720 touch) is received on a predetermined object, the corresponding application is selected. The object is included in the final main image, and the remaining objects and background are deleted. At this time, the user's selection and selection exclusion can be reflected in real time on the screen image so that the user can intuitively know the pre-editing situation.

In addition, the user interface may include a list area 750 through which a user may select an image to be synthesized instead of the location of the partial image that is not selected by the user. For example, the user may erase the background 740 and select a pre-stored image in the list area 750 to enter the background 740 instead.

8 illustrates a screen for pre-editing a captured image according to an embodiment of the present invention.

The user may select an object through the user interface displayed on the main image and move it to another position. In the example of FIG. 8A, it can be seen that the user has moved the corresponding object by input of dragging and dropping the object.

The user may enlarge, reduce or rotate the size of the object through a predetermined input as shown in (b) of FIG. 8.

The user may select a new background image from the background list as shown in (c) of FIG. 8 so that the selected background image is synthesized with the main image instead of the erased background as shown in (d). That is, the photographed partial image may be synthesized with a previously stored image to generate and store a photo file.

When the user selects a background color, a graphic image, or a pattern instead of a background image, the user colors the background of the partial image, or generates and stores a composite picture in which the graphic image or pattern is the background. In addition, if there is a blur setting of the partial image selected by the user, an out-focused photo such as a captured image using a telephoto lens is generated by generating and storing a composite image in which the blur of the partial image is adjusted. The image can be acquired. In this case, the user may set a blurring degree of the selected background image or set a type of blurring effect to be applied such as a motion blur or a radial blur to obtain a desired outfocusing effect.

In step S36 of FIG. 3, a request for storing a picture of a user is received. After the user has finished editing the line as he or she wants in the Live View format, the user interface for selecting or erasing the main image and each sub-image will be pressed. Touching or clicking the shooting button corresponds to a request to save a picture.

In step S37 of FIG. 3, the photographed picture is stored in response to the selection of the photographing button. At this time, the stored picture is an image displayed on the screen, which is a part of the background image and some partial images of the object are deleted from the main image according to the user's edit input in step S35. Store in If the size of the subject is automatically adjusted, the image after the adjustment will be stored. The new main image may be stored in an image file format such as PNG (Portable Network Graphics) or PSD (Photoshop Document). In addition, the original main image before editing can be stored together with the new main image in a layer format.

As described above, according to an exemplary embodiment of the present invention, it is possible to check an image while taking a picture, to remove a background, or to store and store a picture in which an unwanted object is deleted in real time.

In addition, the background or the object may be selected even after the photographing is completed and saved. As described above, the photograph (Luki image) from which the partial image that has been excluded by the user is deleted is stored in the storage unit, and when there is a request from the user, the photograph is read out from the storage unit and displayed on the screen, and the plurality of images is displayed according to the user's operation. Photographed with one of the cameras of the background image of the nucleus image being displayed on the screen can be obtained.

9 is a view for explaining an operation of taking a picture with a plurality of cameras including a front camera according to an embodiment of the present invention.

Referring to FIG. 9, the user 910 executes a dedicated application and turns on the rear cameras of the digital photographing apparatus 900 to look at the subjects 920 including a lego character doll, etc., and select and photograph only a desired object. When you take a picture of yourself by turning on the camera, you can composite the image taken by the rear camera and the user's image taken by the front camera.

The dedicated application will provide a user interface for selecting only a partial image desired by the user from the images of the subjects 920 and displaying an image overlaid on his screen taken by the front camera. When the user checks the image to be synthesized and requests to save the photo, the synthesized image will be generated and stored as the main image. Accordingly, the user may complete and capture an image obtained by synthesizing the backgroundless character image prepared in the previous step with the image captured by the front camera.

10 illustrates a screen for synthesizing an image photographed by a front camera and an image photographed by a rear camera according to an embodiment of the present invention.

Referring to FIG. 10, when the user selects only a desired object from an image captured by the rear camera, the user turns on the front camera to take a picture of himself, as shown in (a). The live view in which the object image 1020 is displayed together is shown. The user may edit to modify the size or move the position of the object 1020 on the screen of (a).

As shown in (b) of FIG. 10, when the size of the object image 1020 is enlarged as desired, a touch or click of a photographing button is generated to generate a picture in which the user image 1010 and the object image 1020 are together and stored in the memory. will be. In this case, the dedicated application provides a preview in a live view manner, so the user can change the look or the appearance of the image.

In one embodiment, when the user turns on the front camera and photographs his face, the direction of the images taken by the front and rear cameras is reversed, so that a dedicated application flips the rear image left and right to obtain a final main image that meets the user's needs. can do.

In one embodiment, the dedicated application may recognize the face of the subject photographed by the front camera and the face of the subject photographed by the rear camera and automatically adjust the ratio of both. As shown in the example of FIG. 10, even if the user does not enlarge the size of the LEGO character image 1020 to match his / her face size, the dedicated application automatically recognizes the faces of the user 1010 and the LEGO character 1020 and increases the size. The LEGO character image 1020 can be enlarged to be similar. In particular, because the front and rear cameras have different lens types, and the front and rear subject distances are different, the faces are captured differently. Can be obtained.

In one embodiment, the dedicated application may automatically adjust the horizontal and vertical height based on the shoulder position or nose height of the persons included in the front image and the rear image. If the face of the LEGO character 1020 taken with the rear camera is located above or below the face of the user 1010 taken with the front camera, as shown in FIG. 10, the dedicated application may have a face of the user 1010. Will be positioned next to the face.

At this time, when using the front camera or the rear camera to display a photographic image of a backgroundless object (Lego character, 1020) that is already taken and stored without using the front camera and rear camera together, the photographic object 1020 is displayed. And the composite image of the captured video can be taken naturally and immediately. For example, after displaying an object (e.g., person, character, object, etc.) of a nook image without a background, the background image of the object is captured in real time using a front camera or a rear camera to acquire a new background image synthesized. You can do it. In other words, it is possible to shoot in real time while changing the background of the object, it is possible to easily create a picture of the image is composed of different background images on the same object.

In one embodiment, the dedicated application may automatically adjust the left and right areas to be occupied by the front image captured by the front camera and the rear image captured by the rear camera, respectively. For example, the number of faces included in the front image and the rear image may be recognized and automatically adjusted to occupy an area in the horizontal direction in proportion to the number of faces included in each image.

The above embodiments may be implemented in combination of two or more. For example, if the dedicated application recognizes one user's face in the front image and determines that the objects selected in the rear image include two faces, it allocates 1/3 of the screen's horizontal area to the front image and The two images may be synthesized by allocating two thirds of the horizontal area of the screen, and the rear image position may be displayed on the screen so that the face height of the front image and the face height of the rear image are similar.

As described above, the embodiments of the present invention allow the user to acquire in real time a new image combining an image intended or imagined by the user with the actual photorealistic image, unlike a camera of the related art, which merely reproduces the actual state as it is.

Method according to an embodiment of the present invention is implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

100: digital shooting device
110: camera module
111: first camera (rear camera)
112: second camera (rear camera)
113: third camera (front camera)
120: processor
130: display
140: memory

Claims (8)

In the backgroundless image shooting using a camera and a method of taking a composite picture using the same,
Generating a depth map by analyzing a plurality of images photographed by a plurality of cameras when a photograph is requested from a user;
Determining at least one partial image constituting an image using the depth map;
And supporting the selection of the partial image to store a picture from which the selected partial image is deleted.

In generating the depth map,
A depth map is generated from images acquired from at least two rear cameras of the terminal,

When the angle of view of the rear camera is the same,
When the pixel difference is less than the set value, the object is determined to be far away through the comparison of the distance difference of the same object of each image.

If the angle of view of the rear camera is different,
The horizontal and vertical sizes of the same object of each image photographed by the cameras having different angles of view are processed to be the same, but the reference image is enlarged by expanding the image photographed by the camera having a relatively wide angle than the reference camera. To be equal to the horizontal or vertical size of the same object captured by the camera,
And a depth is determined using a coordinate difference between the same object of the image captured by the camera as the reference and the enlarged image. The method of claim 1,
The storing of the deleted picture of the selected partial image may include:
Displaying a user interface for classifying and selecting the one or more partial images as a live view image on the main image displayed on the screen of the digital photographing apparatus;
Receiving a user input via the user interface;
When the storage of the picture is requested from the user, generating a new main picture stored in the storage unit by deleting a partial image selected and excluded from the main image according to a user's input through the user interface; The shooting method characterized by the above. The method of claim 2,
The storing in the storage unit,
And storing a photograph obtained by synthesizing the selected excluded partial image and another photograph selected by the user as a main image. The method of claim 2,
The storing in the storage unit,
And storing a photograph obtained by deleting the selected partial image and a photograph obtained by synthesizing an image captured by the front camera of the terminal as a main image. The method of claim 2,
The storing in the storage unit,
And storing the original main image including the partial image not selected by the user as a layer of the new main image. The method of claim 2,
Reading and displaying a picture from which the partial image selected and excluded by the user is deleted from the storage unit;
And acquiring a photograph obtained by synthesizing the image photographed by one of the plurality of cameras into a background image of the displayed nucleus image. The method of claim 2,
And recognizing a face of a subject in the plurality of partial images selected through the user interface and automatically adjusting the sizes of the selected partial images so that the sizes of the recognized faces are similar to each other. A computer program recorded on a recording medium for performing a backgroundless image capturing using the camera of any one of claims 1 to 7, and a composite photographing method using the same.

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