KR102575217B1 - Method for supplement scan data using library data and system thereof - Google Patents

Abstract

A scan data complement method using library data according to the present invention includes a scanning step of acquiring scan data of a subject including a structure, a step of selecting library model data corresponding to the structure, and a post-processing of the scan data. processing), wherein the library model data is added to the post-processing step and post-processed together with the scan data. Accordingly, the scan data in which distortion or data void occurs is complemented by the library model data, and the user obtains a highly reliable 3D model.

Description

Method and system for supplementing scan data using library data {Method for supplement scan data using library data and system}

The present invention relates to a method and system for supplementing scan data using library data. More specifically, the present invention relates to a method and system for supplementing scan data using library data, in which library data is added to a post-processing process when scan data is post-processed.

Currently, 3D scanning technology is used in various fields, and since the accuracy and speed of scanning technology are continuously improved, it is attracting attention that it will be continuously used in the industrial field in the future.

On the other hand, in performing 3D scanning, if the person (user) performing the scanning fails to scan the subject for a sufficient time or amount, scan data for a part corresponding to a part of the subject is not generated and remains blank. there will be Particularly, it may be difficult to obtain data through a scan according to light irradiation for a part made of a metal material with strong light reflection. After performing 3D scanning, it is important for the user to scan the subject closely so that insufficient data is minimized, but there may be cases where scan data is insufficiently obtained depending on the scan limit, and user fatigue may increase and cause discomfort. .

In order to compensate for the incompleteness of such data acquisition, a method for filling incomplete parts of data obtained by scanning or correcting errors using 3D designed data (eg, 3D drawing data) is required. .

Republic of Korea Patent Publication No. 10-2015-0103360 (published on September 10, 2015)

The present invention provides a method for complementing scan data using library data, which can supplement scan data acquired in the scan step through preloaded library model data.

In addition, the present invention provides a scan data supplementation system using library data capable of supplementing scan data through library model data by a system in which a method of supplementing scan data using library data is performed.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

A scan data complement method using library data according to the present invention includes a scanning step of acquiring scan data of a subject including a structure, a step of selecting library model data corresponding to the structure, and a post-processing of the scan data. processing), and the library model data is added to the post-processing step and post-processed together with the scan data.

In addition, the library model data added in the post-processing step may be aligned with at least a portion of the scan data.

In addition, at least a portion of the scan data may be aligned based on the library model data.

In addition, in the 3D model of the structure, a data gap of the structure not scanned in the scanning step may be supplemented with the library model data.

Meanwhile, a scan data complement method using library data according to another embodiment of the present invention includes a scan step of obtaining scan data of a subject including a structure, and the scan data and library model data corresponding to the structure together. An aligning step of generating a 3D model of the subject by aligning the object may be included.

In addition, the subject may be at least one selected from the group consisting of the oral cavity of the patient, a negative model of the oral cavity, and a positive model of the oral cavity.

In addition, the structure may be at least one or more selected from prosthesis consisting of a scan body, an abutment, and the like implanted in the subject.

In addition, the aligning step may include a local aligning step of sequentially aligning the scan data input according to the scan step, and at least a portion of the scan data input after the end of the local align step and the library model data It may include a global alignment step of aligning as a whole.

Also, a real-time 3D model of the subject may be generated according to the local aligning step, and the real-time 3D model may be reconstructed according to the global aligning step.

Also, the library model data may be selected before the aligning step.

Also, the library model data may be selected before or after the scanning step.

In addition, the library model data may be selected before the global alignment step.

Also, the library model data may be selected before the scan step or after the local align step.

In addition, the library model data may be automatically or manually selected.

In addition, when the library model data is manually selected, it may be selected according to a user's input on the library interface.

Meanwhile, the scan data supplementation system using library data according to the present invention includes a scan unit that acquires scan data of a subject including a structure, and aligns the acquired scan data with library model data corresponding to the structure. It may include a control unit that generates a 3D model of the subject by aligning the object.

In addition, the control unit may be formed inside the scan unit, or may be formed spaced apart from the scan unit.

Also, the scanning unit may be a handheld scanner or a table scanner.

The scan unit may include at least one camera for receiving light reflected from the subject and an imaging sensor electrically connected to the camera to obtain a 2D image of the subject.

In addition, the control unit may include a 3D conversion unit for converting the 2D image of the subject into 3D data, and an align unit for arranging the 3D data.

In addition, the aligning unit sequentially aligns the 3D data sequentially with each other, and the 3D data and the library model data following the sequential aligning performed by the local aligning unit. It may include a global alignment unit that aligns the whole.

The control unit may further include a library selection unit that selects the library model data, so that the library model data selected from the library selection unit supplements the scan data obtained from the scanning unit.

By using the method and system for supplementing scan data using library data according to the present invention, even if insufficient scan data is obtained, data can be supplemented through preloaded library model data to provide highly reliable data when manufacturing prosthetic treatment products There is an advantage.

1 is a schematic flowchart of a scan data complement method using library data according to the present invention.
Figure 2 is a diagram displayed on the scan interface before scan data is acquired and supplemented;
3 is a diagram in which dimensions measurement results of a prosthetic treatment obtained as scan data are displayed together on a scan interface.
4 is a diagram displayed on the scan interface before scan data is obtained and supplemented;
5 is a view showing a process of compensating for a data gap or low data density by arranging library model data on the scan data in the method of supplementing scan data using library data according to the present invention.
6 is a diagram illustrating a deviation between scan data before using library data and supplemental data obtained by supplementing scan data using library model data.
7 is a schematic diagram of the configuration of a system for complementing scan data using library data according to the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. In addition, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a schematic flowchart of a scan data complement method using library data according to the present invention.

Referring to FIG. 1 , the method for supplementing scan data using library data according to the present invention may include a scanning step (S10) of obtaining scan data 1 by scanning a subject including a structure by a scanner. At this time, the subject may be the inside of the patient's actual mouth to be treated for the purpose of the present invention, which requires scan data such as the teeth 20, the gingiva 10, and the jawbone. However, the subject is not necessarily limited to the inside of the patient's actual oral cavity, and the subject may be an oral model (plaster model) for testing an implantation depth and an implantation angle before implanting a structure in the patient's oral cavity. The oral model may be a negative model, which is an impression obtained by taking an impression using alginate or the like, or may be a positive model obtained by filling the negative model with a material such as gypsum. Accordingly, the scan data 1 may be digital data for a negative or positive model imitating the inside of the patient's mouth or the inside of the mouth. On the other hand, the structure may be at least one of an abutment placed in a subject for implant or crown treatment or a scanbody capable of checking the insertion depth and direction of a fixture inserted into the gingiva 10. .

The scanning step (S10) is performed through a scanner driven by the user. At this time, different types of scanners may be used depending on the type of subject. Exemplarily, when the subject is an oral model in which an impression is taken, the scanner driven by the user has an internal space in which the subject can be placed and photographs the subject with a camera formed inside the scanner while tilting or rotating the subject. It may be a table scanner that acquires scan data. When the subject is inside the patient's actual oral cavity, the scanner driven by the user allows the user to directly enter and withdraw the patient's oral cavity by hand gripping, thereby actively adjusting the scanning distance and scanning angle to the subject according to the user's needs. It may be a handheld intraoral scanner that can be adjusted. At this time, when the scanner driven by the user is a handheld intraoral scanner, the subject may be at least one of the patient's actual oral cavity, a negative model, and a positive model.

The scanning step ( S10 ) may include an image acquiring step ( S11 ) of acquiring a 2D image through at least one camera formed inside the scanner and an imaging sensor electrically connected to the camera. The scanner may include a case having a tip formed at one end so as to be drawn in and out of the oral cavity, and at least one camera may be formed inside the case to receive light entering the case. In this case, the camera may be one single camera or two or more multi-cameras. When light is received into the camera, the light may be formed into electronic image information (data) by an imaging sensor electrically connected to the camera. The imaging sensor replaces a conventional film, and may exemplarily be a CCD sensor or a CMOS sensor. However, the imaging sensor is not necessarily limited to a CCD sensor or a CMOS sensor, and the imaging sensor may be a color imaging sensor as needed. The image data acquired in the image acquiring step ( S11 ) may be planar two-dimensional image data, and the image data is obtained by continuously photographing the subject while the scanner performs scanning.

In addition, the scanning step (S10) may further include a 3D conversion step (S12) of converting the 2D image data obtained in the image acquisition step (S11) into 3D data having a volume. In order to convert 2D image data into 3D data, a plurality of shots of 2D image data may be used. In order to obtain depth information necessary for converting 2D image data into 3D data, structured light having a specific pattern may be radiated onto a subject from a light irradiation device such as a light projector formed inside a scanner. At this time, the light emitted from the light irradiation device may have various wavelength ranges, and light having a wavelength capable of acquiring a clear image of the subject without damaging the inside of the oral cavity of the patient may be used. Illustratively, the light emitted from the light irradiation device may be light in the visible ray region. The 3D data obtained in this way may then be used to finally create a 3D model representing the subject.

On the other hand, as described above, the align step (S20) of generating a 3D model of the subject by aligning overlapping portions of the plurality of 3D data representing partial shape information of the entire subject can be performed At this time, the align step (S20) may be performed in one or more steps. Illustratively, a local align step of forming a real-time 3D model by sequentially pairing and aligning scan data (2D image data or 3D data) input and acquired from the scan step (S10). (S21) may be included. At this time, the local alignment may be performed using an Iterative Closest Point (ICP) method, which is one of point cloud alignment. A real-time 3D model representing the subject may be generated through the local alignment step ( S21 ).

When a real-time 3D model representing the subject is generated through the local alignment step (S21), library model data corresponding to the structure implanted in the subject may be selected (library selection step, S30). The 'library' may be data embedded in a program or application in which the scan data complement method according to the present invention is performed, and the library model data LD refers to ready-made embedded model data. At this time, the library model data LD may include various objects. Illustratively, the library model data LD may be scanbody model data that can be implanted in the patient's actual oral cavity or a part (more specifically, the gingiva) of the oral cavity model. Exemplarily, when the structure to be placed on the tooth 20 is a scan body, the library model data LD includes 3D shape information such as curvature information, color information, and axis information of the surface of the scan body. can be implemented as a model. Such library model data LD may be formed using a CAD (Computer Aided Design) design tool, but is not limited thereto.

For example, the library model data LD may be manually selected according to a user's input from a library interface formed apart from a scan interface corresponding to a work area (workspace) of a program. However, the library model data (LD) may not always be manually selected according to the user's input, and the library model data (LD) is scan data (1) obtained by scanning a subject including a structure in the scan step (S10). ) may be automatically selected based on. When scanning is performed in the scanning step ( S10 ), the scanner performing the scanning step ( S10 ) may recognize a structure having a different shape or different material from that of the gingiva or teeth. Library model data LD having corresponding information may be automatically selected in the library selection step S30 based on the material, shape, etc. of the structure recognized in the scanning step S10.

As described above, the library selection step (S30) has been described as being performed after the local alignment step (S21), but is not necessarily limited thereto. Illustratively, the process of selecting the library model data (LD) in the library selection step (S30) may be performed before the scan step (S10), or between the scan step (S10) and the align step (S20). (That is, after the scan step (S10) and before the align step (S20)) may be performed. In another example, the library selection step (S30) is performed after the above-described local alignment step (S21) and before a post processing step (eg, a global alignment step (S22)) to be described later, that is, the local alignment step (S22). It may be performed between the in-step (S21) and the post-processing step. However, due to the nature of the present invention, the library selection step (S30) is performed before the post-processing step is performed, so that the library model data (LD) is aligned with the scan data (1) during the post-processing step. (LD) can be selected.

Meanwhile, the library model data LD selected in the library data selection step (S30) may have shape information corresponding to a tooth position on which each library model is placed. At this time, the shape information may include surface curvature information, surface color information, axis information, and the like, as described above. In particular, when the structure is a scan body, information such as a central axis, height, or direction of library model data may be included in the shape information. At this time, since the library model data (LD) has dimension and direction information of the existing structure, it can be closer to the real thing than the dimension of the scan data (1) obtained due to insufficient scan in the scan step (S10). there is. In particular, the size of the existing structure can act as a criterion for the size and shape of the structure, since little wear occurs when the new structure is implanted in the subject.

FIG. 2 is a diagram displayed on the scan interface before scan data 1 is acquired and supplemented, and FIG. 3 is a diagram showing the results of measurement of dimensions of the scan body obtained with scan data 1 displayed together on the scan interface. am. 4 is a diagram displayed on the scan interface before scan data 1 is obtained and supplemented, and FIG. 5 is a view of scan data 1 in the scan data complement method using library data according to the present invention. It is a diagram displaying a process in which the library model data (LD) is arranged to compensate for a data gap (B) or a part with low data density.

Referring to FIGS. 2 to 5 , due to light reflection of a scan body formed of a metal material, an overlapping portion in the local alignment step (S21) for a portion of low data density, which occurs due to lack of acquisition of scan data, is formed. Distortion of the scan data 1 may occur due to insufficient alignment. Such distortion of the scan data (1) causes not only insufficient shape representation (data blank) but also axial error, and when attempting to match the library model data (LD), the matching is smooth due to the insufficient shape representation. When a prosthetic appliance such as a crown is manufactured based on an erroneous matching result, such as matching based on an unsupported or tilted axis direction, a margin error with an abutment or surrounding teeth inevitably occurs. In the present invention, at least a part of the distorted scan data 1 may be supplemented through shape information of the library model data LD. At this time, the library model data (LD) complements the scan data (1) to the real-time 3D model data of the scan data (1) acquired through the 3D conversion step (S12) and the local alignment step (S21). It may mean aligning the library model data (LD) together. This is to further improve the data reliability of the part where prosthetic treatment such as scan body is implanted. If necessary, since the library model data LD is more accurate in terms of dimensions, the scan data 1 having a low data density for a structure such as a scan body can be filled with the library model data LD.

2 and 3, the scan data 1 is not expressed in detail, and the structure 21 implanted on the gingiva 10 does not completely acquire the scan data 1 on at least a part of its outer circumferential surface. Whitespace (B) also allows you to see what state is occurring. In addition, when the radius (diameter may be measured in some cases) of the inner hole D of the structure 21 is measured, each structure 21 is incorrectly scanned by the inner hole D'. ), it can be seen that the radii are different. Illustratively, the incorrectly scanned internal hole D′ is formed in at least one of the first structure 21a, the second structure 21b, the third structure 21c, and the fourth structure 21d of FIG. 3 . can appear In this case, correction, deletion, or supplementation may be performed on an erroneously scanned or unscanned portion due to the user's negligence or the like.

As shown in FIG. 4, when only the scan data 1 appears on the scan interface, an incorrectly scanned inner hole D' and data blank B are found. On the other hand, as shown in FIG. 5, the library model data (LD) is aligned with the scan data (1), and the library model data (LD) has a different color from the scan data (1) in a part where the data density is low. can be displayed.

In order to supplement inaccurate data of the real-time 3D model after the real-time 3D model is formed by performing alignment (alignment) by sequentially forming pairs through the above-described local aligning step (S21) A post-processing step may be performed to finally align the scan data 1 as a whole and reconstruct it into a final 3D model. Illustratively, the post-processing step may be a global alignment step ( S22 ) of reconstructing the 3D model by aligning the local aligned real-time 3D model as a whole. The global alignment step (S22) may be performed as a last step to reconstruct the real-time 3D model to finally generate the 3D model. Illustratively, the global alignment step ( S22 ) may proceed by selecting a complete button formed on the user interface after completing the object scan. Accordingly, the scan data 1 is supplemented and formed into a final 3D model of the subject, thereby improving the reliability of the 3D model representing the subject, and manufacturing and providing a precise prosthetic treatment product to the patient. It has the advantage of providing optimal treatment to the patient.

On the other hand, when performing the global alignment step (S22), the library model data (LD) selected from the library selection step (S30) is scan data (scan data (1) at this time may mean three-dimensional data) Can be used with at least a portion of. That is, in the global alignment step (S22), the library model data (LD) can compensate for the data blank (B) or noise generating part when reconstructing the 3D model as a whole. Exemplarily, when overlapping reference points between 3D data are not sufficient in the above-described local alignment step ( S21 ), distortion of scan data or data blank (B) occurs. At this time, when the global alignment step (S22) is performed by adding the library model data (LD) selected in the library selection step (S30) between the three-dimensional data, each three-dimensional data is matched with the library model data (LD). The number of reference points that can be overlapped increases. Accordingly, even if the real-time 3D model is distorted and formed differently from the subject in the local alignment step (S21), the distorted (shrinked) scan data or data blank when performing the global alignment process, which is a post-processing process, is the library model data It can be rearranged and/or supplemented based on (LD), and as a result, a highly reliable 3D model can be obtained.

6 is a diagram illustrating a deviation between scan data before using library data and supplemental data obtained by supplementing scan data using library data.

As shown in FIG. 6 , there is a difference in information between information of scan data only according to FIG. 4 and supplementary data generated by supplementing scan data with library model data according to FIG. 5 . Accordingly, a deviation of as little as 6 micrometers and as large as 200 micrometers or more appears. In this way, since the part with a large deviation value is a part in which scan data is insufficient or incorrectly obtained due to inaccurate scanning, it is worth noting that there is a practical benefit to supplementing the scan data using library model data in order to obtain a more precise 3D model. can be easily verified.

Hereinafter, a scan data supplementation system using library data according to the present invention will be described.

7 is a schematic diagram of the configuration of a system for complementing scan data using library data according to the present invention.

Referring to FIG. 7 , the system 100 for supplementing scan data using library data according to the present invention includes a scan unit 110 that acquires scan data of a subject including a structure, and the acquired scan data and structure corresponding to each other. It may include a control unit 120 that generates a 3D model of a subject by aligning library model data to be used together, and an output unit 130 that receives a control signal from the control unit 120 and outputs scan data. .

The scan unit 110 may obtain scan data by scanning an object, and in this case, the object may include a structure such as an abutment or a scan body. Also, the subject may be an actual oral cavity of a patient in which a structure is placed, or an impression body or a plaster model obtained by taking an impression of the patient's oral cavity. The scanning unit 110 may be a 3D scanner for scanning such a subject. The 3D scanner may be a table scanner or a handheld intraoral scanner for finally forming a 3D model based on the acquired image.

In addition, the scan unit 110 may include at least one camera for receiving light reflected from a subject and an imaging sensor electrically connected to the camera. The camera may receive light reflected from a subject through a camera lens and focus the light onto an imaging sensor that functions like a retina or a film. The imaging sensor may generate 2D image data by analyzing light. The generated 2D image data may be stored in the database unit 121 .

Meanwhile, the 2D image data acquired by the scanning process of the scanning unit 110 may be converted into 3D data by the 3D conversion unit 122 inside the control unit 120 to form a 3D model. In order to convert 2D image data into 3D data, the scan unit 110 may radiate structured light having a specific pattern to the subject. The 3D conversion unit 122 may convert the 2D image data obtained by analyzing the 2D image data having a pattern into 3D data having a volume.

The above-described scanning unit 110 may be a handheld type scanner that partially continuously scans a subject to obtain data. In particular, the handheld type scanner may be an intraoral scanner used for dental treatment purposes. However, the configuration of the scanning unit 110 is not limited to the intraoral scanner, and in some cases, an oral model obtained by taking an impression of the patient's oral cavity is placed on a tray formed therein, and then scanned as a whole to obtain data. It could also be a table scanner that does

The control unit 120 may further include an align unit 123 that aligns the 3D data converted by the 3D conversion unit 122 . The aligner 123 may arrange and merge 3D data by aligning partially or wholly overlapping 3D data. Preferably, at least two or more alignments are performed by the aligning unit 123 . For example, the aligning unit 123 includes a local aligning unit 123a that sequentially performs partial alignment (local alignment) on successive 3D data obtained by the 3D conversion unit 122; After local alignment is performed, a global alignment unit 123b that performs global alignment on all 3D data may be included. According to the global alignment performed by the global align unit 123b, 3D data may be formed (reconstructed) into a final 3D model, and reliability of the data may be improved.

On the other hand, in order to form the final 3D model by the global align unit 123b, the library selection unit 124 allows the library model data to be used in the process of supplementing the 3D model to obtain a more precise final 3D model. can be obtained The library selection unit 124 may select library model data of structures stored in the library of the database unit 121 . In this case, the library model data may refer to 3D design drawing data for a structure (meaning a prosthetic treatment product such as an abutment or a scan body) as described above. Library model data may be selected by manual selection by a user or by automatic selection through structure information obtained from scanning of a subject including structures in a scanning process of the scanning unit 110 . The selected library model data may preferably be subjected to a global alignment process together with 3D data for which the local alignment process has been completed by the local align unit 123a. Accordingly, insufficient scan of scan data (data acquired from scan) can be supplemented with library model data.

The controller 120 may be formed to be mounted on the scan unit 110, that is, to be built into the case of the scan unit 110. Alternatively, the controller 120 may not be formed inside the scan unit 110 but may be formed spaced apart from the scan unit 110 and connected to the scan unit 110 through electrical communication. At this time, when the scanning unit 110 and the control unit 120 are formed separately, the scan data obtained from the scanning unit 110 is transmitted to the control unit 120 connected to the scanning unit 110 by wire or wirelessly, thereby providing 3D data. It can be used for creation, alignment, library selection and data supplementation.

Meanwhile, the 3D data generation process of the 3D conversion unit 122 and the aligning process of the align unit 123 may be output to the output unit 130 according to the application of a control signal by the control unit 120. . The output unit 130 may be any means capable of outputting the 3D transformation or aligning process to the user, but may preferably be a monitor device capable of visually displaying the above-described process. The user can check the scan data and library model data through the output unit 130, and if additional scan is required, additional scan can be performed on the corresponding part or library model data suitable for supplementing the scan data can be selected.

In addition, the communication unit 140 may transmit or receive information such as 3D transformation, alignment, and library model data selection performed by the control unit to other systems or the like. Through the communication unit 140, the scan and supplemented data or related information of the scan data complement system according to the present invention may be shared with other systems, and necessary information may be shared from other systems.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

S10: Scan step S11: Image acquisition step
S12: 3D Transformation Step S20: Alignment Step
S21: Local Alignment Step S22: Global Alignment Step
S30: library data selection step
1: scan data
10: gingiva
20: tooth
21, 21a, 21b, 21c, 21d: structures (or library models)
D: Inner hole D': Incorrectly scanned inner hole
B: data blank LD: library model data
100: scan data complement system
110: scan unit 120: control unit
121: database unit 122: 3-dimensional conversion unit
123: align part 123a: local align part
123b: global alignment unit 124: library selection unit
130: output unit 140: communication unit

Claims (22)

A scanning step of obtaining scan data of a subject in which a structure is implanted;
selecting library model data corresponding to the structure; and
Including; post-processing the scan data;
The subject is at least one of a patient's oral cavity and an oral model of the oral cavity, and the scan data before the post-processing has a data gap or a low data density portion due to a structure having a material different from that of the subject,
The library model data is added to the scan data in the post-processing step and post-processed together with the scan data, scan data supplementation method using library data. The method of claim 1,
The library model data added in the post-processing step is aligned with at least a portion of the scan data, scan data supplementation method using library data. The method of claim 2,
At least a portion of the scan data is aligned based on the library model data, scan data supplementation method using library data. delete A scanning step of obtaining scan data of a subject in which a structure is implanted; and
An align step of generating a three-dimensional model of the subject by aligning the scan data and library model data corresponding to the structure together;
The subject is at least one of a patient's oral cavity and an oral model of the oral cavity, and the scan data has a data gap or a low data density part due to a structure having a material different from the subject, scan data supplementation method using library data . The method of claim 5,
Wherein the subject is at least one selected from the group consisting of a patient's oral cavity, a negative model of the oral cavity, and a positive model of the oral cavity. The method of claim 5,
The scan data complementation method using library data, wherein the structure is at least one or more selected from prostheses composed of a scan body, an abutment, etc. implanted in the subject. The method of claim 5,
The aligning step may include: a local aligning step of sequentially aligning the scan data input according to the scanning step; and
and a global aligning step of aligning at least a portion of the input scan data and the library model data as a whole after the local aligning step is finished. The method of claim 8,
The method of supplementing scan data using library data, wherein a real-time 3D model of the subject is generated according to the local alignment step and the real-time 3D model is reconstructed according to the global alignment step. The method of claim 5,
Scan data supplementation method using library data, wherein the library model data is selected before the aligning step. The method of claim 10,
The library model data is selected before or after the scanning step, scan data supplementation method using library data. The method of claim 8,
Scan data supplementation method using library data, wherein the library model data is selected before the global alignment step. The method of claim 12,
The library model data is selected before the scan step or after the local align step, scan data supplementation method using library data. According to any one of claims 10 to 12,
The library model data is automatically or manually selected, scan data supplementation method using library data. The method of claim 14,
When the library model data is manually selected, scan data supplementation method using library data is selected according to a user's input on a library interface. a scanning unit that obtains scan data of a subject in which a structure is implanted; and
A control unit for generating a 3D model of the subject by aligning the obtained scan data with the library model data corresponding to the structure;
The subject is at least one of a patient's oral cavity and an oral model of the oral cavity, and the scan data has a data gap or a low data density part due to a structure having a material different from that of the subject, a scan data supplementation system using library data. . The method of claim 16
Wherein the control unit is built into the scan unit or formed apart from the scan unit, a scan data supplementation system using library data. The method of claim 16
The scan unit is a handheld scanner or a table scanner, a scan data complement system using library data. The method of claim 16
The scanning unit includes at least one camera for receiving light reflected from the subject and an imaging sensor electrically connected to the camera to obtain a two-dimensional image of the subject, a scan data supplementation system using library data. . The method of claim 19
The control unit includes a 3-dimensional conversion unit for converting the 2-dimensional image of the subject into 3-dimensional data, and an align unit for aligning the 3-dimensional data. The method of claim 20,
The aligning unit sequentially aligns the 3D data sequentially with each other, and the 3D data and the library model data as a whole following the sequential aligning performed by the local aligning unit. A scan data complement system using library data including a global alignment unit for aligning. The method of claim 21,
The control unit further comprises a library selection unit for selecting the library model data, wherein the library model data selected from the library selection unit complements the scan data obtained from the scan unit.

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