WO2016093455A1 - 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법 및 이를 적용한 시뮬레이션 시스템 - Google Patents
시뮬레이션 시스템에서의 오브젝트 자동 이동 방법 및 이를 적용한 시뮬레이션 시스템 Download PDFInfo
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- WO2016093455A1 WO2016093455A1 PCT/KR2015/007012 KR2015007012W WO2016093455A1 WO 2016093455 A1 WO2016093455 A1 WO 2016093455A1 KR 2015007012 W KR2015007012 W KR 2015007012W WO 2016093455 A1 WO2016093455 A1 WO 2016093455A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/002—Orthodontic computer assisted systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/002—Orthodontic computer assisted systems
- A61C2007/004—Automatic construction of a set of axes for a tooth or a plurality of teeth
Definitions
- the present invention relates to a method for automatically moving an object in a simulation system and a simulation system to which the same is improved by automatically moving adjacent objects when objects overlap or move.
- CAE Computer aided engineering
- FEA finite element analysis
- the present invention has been made to solve the above-described problem, and when an object moves, an object moves automatically in a simulation system that improves user convenience by automatically moving adjacent objects according to a specific condition, and a simulation system applying the same. It is about.
- an object automatic moving method in a simulation system includes: moving a first object of a plurality of objects in a first direction; Measuring a vector distance between the first object and the second object that is an adjacent object of the first object according to the movement of the first object; And automatically moving the second object a predetermined distance in a first direction along a preset path so that the vector distance is within a preset vector distance range.
- the first object and the second object are overlapped with each other. And determining that the first object and the second object are within a preset range, and separating the second object according to the moving direction of the first object.
- the first object and the second object are spaced apart from each other. And determining that the first object and the second object are within a preset vector distance range, and moving the second object to an adjacent vector according to a moving direction of the first object.
- the method for automatically moving an object in the simulation system is configured to automatically move the third object so that the third object, which is an adjacent object of the second object, is within the preset vector distance range according to the automatic movement of the second object.
- the method may further include moving.
- the step of automatically moving the second object a predetermined distance in a first direction along a preset path such that the vector distance is within a preset vector distance range may include: first and second control points in the second object; Determining; And vector moving the first control point and the second control point along the preset path.
- the step of automatically moving the second object a predetermined distance in a first direction along a preset path so that the vector distance is within a preset vector distance range may include: moving the second object by a reference distance smaller than the preset vector distance; It may include repeating the step.
- moving the first object of the plurality of objects in a first direction includes moving the first object from a first position to a second position, such that the vector distance is within a preset vector distance range.
- Automatically moving the second object a predetermined distance in a first direction along a preset path includes: determining a center point of each of the first object and the second object as a control point; Determining a vector direction between the control points; And linearly moving the second object by a reference distance in the vector direction.
- the step of automatically moving the second object a predetermined distance in a first direction along a preset path so that the vector distance is within a preset vector distance range may include moving the second object in a first direction along a preset path. And moving the predetermined distance arch.
- the plurality of objects may be 3D objects.
- the method for automatically moving an object in the simulation system may include extracting an intersection point at which the plurality of 3D objects and a reference plane having a plane equation intersect; Converting the 3D object into a 2D object using the intersection point; And setting the 2D path determined using the center point of the 2D project as the preset path.
- the measuring of the vector distance between the first object and the second object that is an adjacent object of the first object according to the movement of the first object may include: a point of the first object based on the preset path;
- the method may include obtaining the vector distance by calculating a shortest distance between points of the second object.
- the measuring of the vector distance between the first object and the second object that is an adjacent object of the first object according to the movement of the first object may include: a point of the first object based on the preset path;
- the method may include obtaining the vector distance by calculating the shortest distance from the plane of the second object.
- the method for automatically moving an object in the simulation system may include: leveling based on the number of points of the first object and the second object; And calculating the shortest distance by calculating a distance between the point of the first object and the point of the second object according to the level determined by the user input signal.
- a simulation system the display unit for displaying a plurality of objects; A memory storing an object distance measuring program for measuring a vector distance between objects; A user input unit for generating a movement signal with respect to the first object; And moving the first object among a plurality of objects in a first direction based on the movement signal input through the user input unit, driving the object distance measuring program stored in the memory to move the first object according to the movement of the first object.
- the controller may include a controller for moving a vector and displaying the same on the display unit.
- FIG. 1 is a conceptual diagram illustrating a first embodiment of a method for automatically moving an object in a simulation system according to an embodiment of the present invention.
- FIG. 2 is a conceptual diagram illustrating a second embodiment of a method for automatically moving an object in a simulation system according to an embodiment of the present invention.
- FIG. 3 is a flow chart for explaining the operation of the automatic object movement method in the simulation system according to an embodiment of the present invention.
- FIG. 4 is a conceptual diagram of a method for measuring a vector distance in an automatic object movement method in a simulation system according to an embodiment of the present invention.
- FIG. 5 is a conceptual diagram for explaining a method for moving a vector in the automatic object movement method in the simulation system according to an embodiment of the present invention.
- FIG. 6 is a block diagram illustrating an electronic configuration of a simulation system according to another embodiment of the present invention.
- the vector distance is defined as a distance having a directionality or a distance having a vector value in order to know whether collisions between objects occur or are spaced apart.
- vector movement means moving to a forward or reverse direction with respect to a predetermined
- the separation vector movement refers to a movement in which the object is separated from the collision state in the reverse direction, that is, the distance between the objects is increased based on the predetermined path.
- the adjacent vector movement refers to the movement in the reverse direction, that is, the narrowing of the distance between objects, based on the predetermined path.
- FIG. 1 is a conceptual diagram illustrating a first embodiment of a method for automatically moving an object in a simulation system according to an embodiment of the present invention.
- FIG. 1 as the first object is moved, a view for explaining movement of the second object when the first object and the second object overlap.
- FIG. 1A When each of the teeth is objectized from the teeth image of the patient obtained through CT imaging, an image as shown in FIG. 1A is displayed.
- the first object A which is a transposition
- the second object adjacent to the first object A' and the first object A ' is moved.
- the object B collides (nests). Since this cannot actually happen, the teeth corresponding to the second object (B) must actually be moved during orthodontic treatment.
- the second object B moves a predetermined distance along the preset path P (moves to B '), thereby avoiding the collision.
- the preset path P may be generated based on standard archery data pre-stored in memory, or may be generated through archery images in the tooth image of the examinee, and the center point (control point) of each object. You can also create).
- FIG. 2 is a conceptual diagram illustrating a second embodiment of an automatic object movement method in a simulation system according to an embodiment of the present invention.
- the first object A moves in a direction spaced apart from the second object B (moves to A ′).
- the second object B moves adjacent to the first object A 'at a predetermined distance (within the predetermined vector distance) (movement to B').
- each object is aligned side by side at a predetermined interval.
- the center of gravity of each object serves as a control point, the control point is moved along the preset path (P). This moving method will be described later.
- FIG. 3 is a flowchart illustrating an operation of an automatic object movement method in a simulation system according to an embodiment of the present invention.
- a plurality of objects are obtained (S1).
- each tooth is objectified from the image of the archery obtained through CT imaging of the examinee. Accordingly, a plurality of tooth objects are generated.
- the user moves the first object, which is one of the plurality of objects, in the first direction through the user input unit (S3). That is, the movement of the first object means to move the first object from the first position to the second position.
- Each object can also have a control point.
- control point is the center of gravity (that is, when there is one control point) and when there are two control points on the plane of the object (that is, the first control point and the second control point).
- control point may be used as a part that matches the preset path when the object moves, and may be used to determine the moving direction of the object. This will be described later.
- a 1st direction here means a forward direction (clockwise) or a reverse direction (counterclockwise direction) according to a preset path
- the vector distance between the first object and the second object which is an adjacent object of the first object is measured (calculated) according to the movement of the first object (S5).
- the vector distance here is a distance having a positive value (ie, when the first and second objects are spaced apart), or a distance having a negative value (ie, when the first and second objects overlap). Can be divided into It then checks to see if the vector distance is a preset range (ie, a well aligned distance). If the vector distance is not within the preset range, the second object is automatically moved by the predetermined distance in the first direction along the preset path (S9).
- the preset path may be set by connecting center points of the plurality of objects, or the predetermined path of the pre-stored standard data may be the preset path.
- the vector moving distance is a negative value, it is determined that the first object and the second object overlap each other, and the second object is set to the first object so that the first object and the second object are within a preset range.
- the separation vector is moved according to the moving direction of the object.
- the vector moving distance is a positive value, it is determined that the first object and the second object are spaced apart, and the first object and the second object are preset vectors.
- the second object is moved to an adjacent vector according to the moving direction of the first object (S9).
- the automatic vector movement of the second object is to determine the vector direction between the control point (center point and the center point (control point) of the first object), and then move the second object in a straight line by the reference distance in the vector direction.
- the arch that is, the second object may be moved along a predetermined path in the first direction, which is the moving direction of the first object, by the predetermined distance. If there are two control points, the second object can be moved while both control points match the preset path, in which case the two objects naturally match the preset path, In the preset pass, movement and rotation are made so that they stay at the expected point.
- the vector distance between the first object and the second object is calculated again (S5). This operation is repeated so that the vector distance is within the preset vector distance.
- the third object which is another object adjacent to the second object, is also moved vector by the above-described steps. That is, according to the automatic movement of the second object, the third object is automatically moved so that the third object, which is an adjacent object of the second object, is within the preset vector distance range with the second object. By doing this for all objects, all objects are automatically aligned on the preset path in accordance with the movement of the first object.
- the moving distance of each object moves according to the reference distance smaller than the predetermined vector distance. This will be described in more detail with reference to FIG. 5.
- the objects are 3D objects. Therefore, a large amount of calculation is required, so countermeasures are required. Accordingly, in the present invention, the plurality of objects, which are 3D objects, are converted into 2D objects using a plane equation. That is, extracting an intersection point at which the plurality of 3D objects and a reference plane having a plane equation intersect, converting the 3D object into a 2D object by using the intersection point, and converting the 2D path determined by using the center point of the 2D project. By setting the preset path, the preset path can be easily set. In addition, the automatic movement process of the second object may also be performed after converting to a 2D object.
- FIGS. 4A and 4B are a conceptual diagram of a method for measuring a vector distance in an automatic object movement method in a simulation system according to an embodiment of the present invention.
- A denotes a first object and B denotes a second object.
- the first object and the second object are two-dimensional or three-dimensional objects consisting of a plurality of points.
- a method of measuring the distance between them is a method in which the direction from A to B is a positive direction, and the distance between the points of B from the points of A is measured. According to this method, the distance between all points P1 to P7 of A and all points p1 to p7 of B is measured, and the shortest distance d of these distances is defined as a vector distance.
- FIG. 4A and 4B A denotes a first object and B denotes a second object.
- the first object and the second object are two-dimensional or three-dimensional objects consisting of a plurality of points.
- a method of measuring the distance between them is a
- the distance between the point and the surface is measured. Measure the distance between all the points P1 to P7 in the first object A and the plurality of planes S1 and S2 consisting of three points in B of the second object, the shortest distance being the vector distance. define.
- the distance between the surface in A as the first object and the point in B as the second object may be measured and the shortest distance among them may be defined as a vector distance. This is the case opposite to FIG. 4B.
- the vector distance has a positive value when the first object and the second object are spaced apart from each other. It will be appreciated that if the first object and the second object overlap, the vector distance will have a negative value.
- the number of points of the first object and the second object may be leveled.
- the level 1, 1000, the level 2, 10000, the level 3, 100000, and the level 4 may be set to 100 points of the first object.
- FIG. 5 is a conceptual diagram illustrating a method of moving a vector in the automatic object movement method in the simulation system according to an embodiment of the present invention.
- An example shown in FIG. 5 is a case where the first object is moved in the separation direction, that is, when the first object is moved in a direction away from the first object and the second object.
- the second object repeats the movement of the predetermined distance as described with reference to FIG. 3. That is, the predetermined distance should be smaller than the vector moving distance.
- this predetermined distance is highly related to the accuracy of the automatic alignment in the present invention. The smaller the predetermined distance repeated, the higher the accuracy of automatic alignment, while the greater the computational burden.
- the second object moves to B ', B ", and B"'. In this way, the second object is automatically aligned by repeatedly moving a small distance.
- the simulation system 100 may include a memory 110, a user input unit 120, a display unit 130, and a controller 140.
- the memory 110 is a component in which an object distance measuring program for measuring vector distances between objects is stored.
- the memory 110 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), Random Access Memory (RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, It may include a storage medium of at least one type of magnetic disk, optical disk.
- the user input unit 120 is a component for generating a movement signal for the first object.
- a key button a mouse, a keyboard, a touch screen, and the like may be used.
- the display unit 130 displays (outputs) information processed by the control unit of the simulation system according to the present invention. That is, it is a component for displaying teeth, which are objects, and displaying various GUI and UI information related thereto.
- the display unit 130 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (LCD). It may include at least one of a flexible display, a 3D display.
- LCD liquid crystal display
- TFT LCD thin film transistor-liquid crystal display
- OLED organic light-emitting diode
- LCD flexible display
- the controller 140 drives the object distance measuring program stored in the memory 110 to generate the first object.
- a vector distance between the first object and the second object, which is an adjacent object of the first object, is measured according to the movement of the first object, and the second object is moved along a preset path so that the vector distance is within a preset vector distance range. Accordingly, a function of automatically moving a vector in a first distance in a first direction and displaying it on the display unit 130. Since the operation of the controller has been described in detail with reference to FIGS. 3 to 5, the description thereof will be omitted for simplicity.
- the above-described method may be implemented as code that can be read by a processor in a medium in which a program is recorded. That is, the method of automatically adjusting the tooth protrusion angle in the above-described orthodontic simulation apparatus may be stored in a stored computer readable recording medium.
- processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet). Include.
- the automatic object movement method and the simulation system using the same in the above-described simulation system are not limited to the configuration and method of the above-described embodiments, but each embodiment may be modified in various ways. All or some of these may optionally be combined.
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Description
Claims (15)
- 복수의 오브젝트 중 제 1 오브젝트를 제 1 방향으로 이동시키는 단계;상기 제 1 오브젝트의 이동에 따라 상기 제 1 오브젝트와 상기 제 1 오브젝트의 인접 오브젝트인 상기 제 2 오브젝트의 벡터 거리를 측정하는 단계; 및상기 벡터 거리가 기설정 벡터 거리 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 제 1 방향으로 소정거리 자동으로 벡터이동시키는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 벡터 거리가 기설정 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 소정거리 자동 이동시키는 단계는,상기 벡터 이동거리가 마이너스값이면, 상기 제 1 오브젝트와 상기 제 2 오브젝트가 중첩되어 있다고 판단하여, 상기 제 1 오브젝트와 상기 제 2 오브젝트가 기설정 범위에 있도록 하기 위하여 상기 제 2 오브젝트를 상기 제 1 오브젝트의 이동 방향에 따라 분리 벡터이동시키는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 벡터 거리가 기설정 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 소정거리 자동 이동시키는 단계는,상기 벡터 이동거리가 플러스값이면, 상기 제 1 오브젝트와 상기 제 2 오브젝트가 이격되어 있다고 판단하여, 상기 제 1 오브젝트와 상기 제 2 오브젝트가 기설정 벡터 거리 범위에 있도록 하기 위하여 상기 제 2 오브젝트를 상기 제 1 오브젝트의 이동 방향에 따라 인접 벡터이동시키는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 제 2 오브젝트의 자동이동에 따라 제 2 오브젝트의 인접 오브젝트인 제 3 오브젝트를 제 2 오브젝트와 상기 기설정 벡터 거리 범위에 있도록 제 3 오브젝트를 자동이동시키는 단계를 더 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 벡터 거리가 기설정 벡터 거리 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 제 1 방향으로 소정거리 자동으로 벡터이동시키는 단계는,상기 제 2 오브젝트에서 제 1 제어점 및 제 2 제어점을 결정하는 단계; 및상기 제 1 제어점 및 상기 제 2 제어점이 상기 기설정패스를 따라 벡터이동시키는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 벡터 거리가 기설정 벡터 거리 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 제 1 방향으로 소정거리 자동 벡터 이동시키는 단계는,상기 제 2 오브젝트를 상기 기설정 벡터 거리보다 작은 기준 거리를 반복이동시키는 단계를 더 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,복수의 오브젝트 중 제 1 오브젝트를 제 1 방향으로 이동시키는 단계는,상기 제 1 오브젝트를 제 1 위치에서 제 2 위치로 이동시키는 단계를 포함하고,상기 벡터 거리가 기설정 벡터 거리 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 제 1 방향으로 소정거리 자동 벡터 이동시키는 단계는,상기 제 1 오브젝트와 상기 제 2 오브젝트 각각의 중심점을 제어점으로 결정하는 단계;상기 제어점들 사이의 벡터 방향을 결정하는 단계; 및상기 벡터 방향으로 기준거리 만큼 상기 제 2 오브젝트를 직선 이동시키는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 벡터 거리가 기설정 벡터 거리 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 제 1 방향으로 소정거리 자동 벡터 이동시키는 단계는,상기 제 2 오브젝트를 기설정 패스를 따라 제 1 방향으로 소정거리 아치 이동시키는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 복수의 오브젝트는 3D 오브젝트인, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 8 항에 있어서,상기 복수의 3D 오브젝트과 평면방정식을 가진 기준면이 교차하는 교차점을 추출하는 단계;상기 교차점을 이용하여 상기 3D 오브젝트를 2D 오브젝트로 전환하는 단계; 및상기 2D 프로젝트의 중심점을 이용하여 결정된 2D 패스를 상기 기설정 패스로 설정하는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 제 1 오브젝트의 이동에 따라 상기 제 1 오브젝트와 상기 제 1 오브젝트의 인접 오브젝트인 상기 제 2 오브젝트의 벡터 거리를 측정하는 단계는,상기 기설정 패스를 기준으로 상기 제 1 오브젝트의 포인트와 상기 제 2 오브젝트의 포인트간의 최단거리를 계산하여, 상기 벡터 거리를 획득하는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 1 항에 있어서,상기 제 1 오브젝트의 이동에 따라 상기 제 1 오브젝트와 상기 제 1 오브젝트의 인접 오브젝트인 상기 제 2 오브젝트의 벡터 거리를 측정하는 단계는,상기 기설정 패스를 기준으로 상기 제 1 오브젝트의 포인트와 상기 제 2 오브젝트의 면과의 최단거리를 계산하여, 상기 벡터 거리를 획득하는 단계를 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 제 11 항에 있어서,상기 제 1 오브젝트 및 상기 제 2 오브젝트의 포인트의 수를 기초로 하여 레벨링하는 단계;사용자 입력 신호에 의해 결정된 레벨에 따라 상기 제 1 오브젝트의 포인트와 상기 제 2 오브젝트의 포인트간의 거리를 계산하여, 상기 최단 거리를 계산하는 단계를 더 포함하는, 시뮬레이션 시스템에서의 오브젝트 자동 이동 방법.
- 복수의 오브젝트를 표시하기 위한 디스플레이부;오브젝트간의 벡터 거리를 측정하는 오브젝트 거리 측정 프로그램이 저장된 메모리;제 1 오브젝트에 대하여 이동신호를 생성하기 위한 사용자 입력부; 및상기 사용자 입력부를 통해 입력된 이동 신호에 기초하여 복수의 오브젝트 중 제 1 오브젝트를 제 1 방향으로 이동시키면, 상기 메모리에 저장된 오브젝트 거리 측정 프로그램을 구동하여 상기 제 1 오브젝트의 이동에 따라 상기 제 1 오브젝트와 상기 제 1 오브젝트의 인접 오브젝트인 상기 제 2 오브젝트의 벡터 거리를 측정하고, 상기 벡터 거리가 기설정 벡터 거리 범위내에 있도록 상기 제 2 오브젝트를 기설정 패스를 따라 제 1 방향으로 소정거리 자동으로 벡터이동시키고 이를 상기 디스플레이부에 표시하는 제어부를 포함하는, 시뮬레이션 시스템.
- 제 1 항 내지 제 13 항에 기재된 방법 중 어느 하나를 저장한, 컴퓨터로 판독가능한 기록 매체.
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