阅读说明：本技术 扫描过程再生方法 (Scanning process regeneration method ) 是由 李东勳 崔源勳 于 2020-02-14 设计创作，主要内容包括：根据本发明的扫描过程再生方法,可在扫描步骤中对扫描对象物进行扫描并获取扫描仪的位置信息及旋转信息,可根据这种扫描仪的位置信息及旋转信息计算与扫描对象物之间的距离关系及角度关系。所获取的多个信息及多个关系值可以与扫描时间一同联动并被存储,并且可以与从显示步骤中获取的信息一同按照时间顺序依次显示扫描数据。根据扫描过程再生方法,具有如下优点：可以按照时间顺序检查用户的扫描进行过程,可以通过调节再生速度和选择扫描时间来快速进行这种检查过程。由此,用户可以对扫描不足部分进行针对该部分的进一步扫描,也可以在对具有相似口腔形态的其他患者进行扫描时将其用作用于导出扫描最佳路径的资料。(According to the scanning process reproduction method of the present invention, the scanning target object can be scanned in the scanning step to acquire the position information and the rotation information of the scanner, and the distance relationship and the angle relationship with the scanning target object can be calculated based on the position information and the rotation information of the scanner. The acquired pieces of information and the plurality of relationship values may be linked and stored together with the scanning time, and the scan data may be sequentially displayed in chronological order together with the information acquired from the displaying step. According to the scanning process regeneration method, the following advantages are provided: the user's scan progress can be checked in time series, and such a check process can be performed quickly by adjusting the reproduction speed and selecting the scan time. Thus, the user can perform a further scan of the underscan portion for that portion, and can also use it as material for deriving the optimal path for the scan when scanning other patients with similar oral morphology.)

1. A method of regenerating a scanning process, comprising:

a scanning step of scanning an object to be scanned by a scanner to acquire scanning data;

an information acquisition step of acquiring the state information of the scanner acquired in the scanning step;

a calculation step of calculating relative information between the scanner and the scanning target based on the state information of the scanner acquired in the information acquisition step; and

a display step of displaying the scan data obtained by scanning the scan target object on a user interface.

2. The scanning procedure regeneration method of claim 1,

the scanning step further comprises:

a two-dimensional image acquisition step of receiving light incident through an opening formed at one end of the scanner to acquire at least one two-dimensional image data;

a three-dimensional image generation step of converting at least one of the two-dimensional image data acquired in the two-dimensional image acquisition step into three-dimensional volume data; and

and an alignment step of performing alignment so that the plurality of three-dimensional volume data are connected to each other and aligned.

3. The scanning procedure regeneration method of claim 1,

the information acquired in the information acquisition step includes position information and rotation information of the camera.

4. The scanning process regeneration method of claim 3,

the position information of the camera is obtained in the form of a three-dimensional rectangular coordinate system represented by an x value, a y value and a z value.

5. The scanning process regeneration method of claim 3,

the rotation information of the camera is acquired in the form of a 3 × 3 rotation matrix.

6. The scanning process regeneration method of claim 3,

the position information of the camera and the rotation information of the camera are acquired together in a 3 × 4 matrix form.

7. The scanning process regeneration method according to any one of claims 3 to 6,

in the information acquiring step, position information and rotation information of the scanning head are acquired from the position information of the camera and the rotation information of the camera.

8. The scanning procedure regeneration method of claim 7,

the position information and the rotation information of the scanning head are linked with the scanning time.

9. The scanning procedure regeneration method of claim 1,

in the display step, the formation process of the scan data is reproduced so as to be sequentially displayed in time series.

10. The scanning procedure regeneration method of claim 9,

in the displaying step, when the forming process of the scanning data is reproduced, the reproduction speed can be adjusted by a reproduction speed adjusting part formed on the user interface.

11. The scanning procedure regeneration method of claim 9,

in the displaying step, when the forming process of the scanning data is reproduced, the reproduction position can be adjusted by a scanning time stamp portion formed on the user interface.

12. The scanning procedure regeneration method of claim 9,

in the displaying step, when the forming process of the scan data is reproduced, one end of the shape of the scanner including the scanning head is displayed on the user interface.

13. The scanning procedure regeneration method of claim 12,

the shape of the scanner is displayed on the user interface in a semi-transparent manner, and the state of the scanner including the scanner head and the scan data are reproduced simultaneously.

14. The scanning procedure regeneration method of claim 13,

in the displaying step, a moving path of the scanning head is further displayed.

15. The scanning procedure regeneration method of claim 14,

the moving path of the scanning head includes scanning time information, and when a part of the moving path of the scanning head is selected, the scanning head moves to a reproduction position corresponding to the part.

16. The scanning procedure regeneration method of claim 8,

the scan data, the position information of the scan head, and the rotation information are divided into a plurality of groups in time order.

Technical Field

The invention relates to a METHOD (SCAN processing retrieval METHOD) for reproducing a scanning model data acquisition PROCESS for scanning model data acquired by a scanner.

Background

A three-dimensional scanner is a machine that can acquire and digitize shape information of an object that is a scanning object, and performs measurement by projecting light onto the object. The three-dimensional scan data is used in the fields of automobile manufacturing, graphic production, quality inspection, medical field, customization, and the like, and the range of use thereof tends to be gradually expanded.

For example, a dental hospital or the like generally grasps an intraoral tissue structure of a tooth or the like by taking a model (impression) of the tooth of a patient, and performs treatment and diagnosis based on the grasped tissue structure. In recent years, in order to acquire three-dimensional information on an intraoral tissue structure, a dental oral scanner system that realizes a three-dimensional modeling image of the intraoral tissue structure by measuring light such as laser light has been widely used.

In the case of a general three-dimensional object scanning apparatus, when scanning a three-dimensional object, in order to express the complexity of the object, a plurality of pieces of geometric (Geometry) information called polygons (Polygon) are generated and calculated to generate three-dimensional scan data. However, when the scanning operation is finished and the data is stored, there is a problem that it is difficult to confirm the actual scanning progress again although the scanning completion state can be confirmed.

Disclosure of Invention

Technical problem

The present invention is directed to a method for reproducing a scanning process, which can simulate and display a scanning process of obtaining scanning data by using the scanning data stored in advance.

Technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention pertains from the following descriptions.

Technical scheme

The scanning process regeneration method of the present invention may include: a scanning step of scanning an object to be scanned by a scanner to acquire scanning data; an information acquisition step of acquiring the state information of the scanner acquired in the scanning step; a calculation step of calculating relative information between the scanner and the scanning target based on the state information of the scanner acquired in the information acquisition step; and a display step of displaying the scan data obtained by scanning the scan target object on a user interface.

Moreover, the scanning step may further include: a two-dimensional image acquisition step of receiving light incident through an opening formed at one end of the scanner to acquire at least one two-dimensional image data; a three-dimensional image generation step of converting at least one of the two-dimensional image data acquired in the two-dimensional image acquisition step into three-dimensional volume data; and an alignment step of performing alignment so that the plurality of three-dimensional volume data are connected to each other and aligned.

The information acquired in the information acquiring step may include position information and rotation information of the camera.

The position information of the camera may be acquired in the form of a three-dimensional rectangular coordinate system represented by an x value, a y value, and a z value.

The rotation information of the camera can be acquired in the form of a 3 × 3 rotation matrix.

The positional information of the camera and the rotational information of the camera can be acquired together in a 3 × 4 matrix form.

In the information acquiring step, the position information and the rotation information of the scanning head may be acquired from the position information of the camera and the rotation information of the camera.

The position information and the rotation information of the scanning head may be linked with the scanning time.

In the display step, the formation process of the scan data may be reproduced so as to be sequentially displayed in time series.

In the displaying step, the reproduction speed may be adjusted by a reproduction speed adjusting unit formed on the user interface when the scanned data is reproduced.

In the displaying step, the reproduction position can be adjusted by a scanning time stamp portion formed on the user interface when the process of forming the scan data is reproduced.

In the displaying step, when the formation process of the scan data is reproduced, one end of the shape of the scanner including the scan head can be displayed on the user interface.

The shape of the scanner can be displayed on the user interface in a semi-transparent manner, and the state of the scanner including the scanner head and the scan data can be reproduced simultaneously.

In the displaying step, the moving path of the scanning head may be further displayed.

The movement path of the scanning head includes scanning time information, and when a part of the movement path of the scanning head is selected, the scanning head can move to a reproduction position corresponding to the part.

The scan data, the positional information of the scan head, and the rotational information may be divided into a plurality of groups in time series.

Advantageous effects

According to the scanning process regeneration method of an embodiment of the invention, the scanning process of the obtained scanning data is realized by playing back images, so that the scanning work progress process can be simulated according to the time sequence.

Therefore, the information including the environment of the scanning work for acquiring the scanning data, the scanning method and the problem matters generated in the scanning process can be confirmed according to the work flow, and the confirmed information can be applied to the reliability evaluation of the scanning data and can also be referred to as a guide for improving the efficiency when the next scanning work is performed.

Drawings

FIG. 1 is a schematic flow chart of the regeneration method of the scanning process of the present invention.

Fig. 2 is a flow chart showing the scanning steps in the scanning process regeneration method of the present invention in more detail.

Fig. 3 is a schematic view of a scanning target object and a scanner for scanning the scanning target object in the scanning process regeneration method of the present invention.

Fig. 4 is a diagram schematically illustrating a process of scanning an object to be scanned while the scanner is scanning the object to be scanned, the process being performed while the object is traveling from T1 to T6 in the scanning process reproducing method according to the present invention.

Fig. 5 is a diagram schematically showing a relationship between a camera built in a scanner and a scanning target when the scanning target is scanned.

Fig. 6 to 14 are diagrams illustrating a process of generating scan pattern data on a user interface in a scan process reproducing method of the present invention in chronological order.

Fig. 15 is a diagram showing a state where a scanning path is displayed on a user interface in the scanning process reproduction method of the present invention.

Description of the symbols

S10: scanning step

S11: two-dimensional image acquisition step

S12: three-dimensional image generating step

S13: alignment step

S20: information acquisition step

S30: operation step

S40: display step

T1, T2, T3, T4, T5, T6: scanning spot

1: scanning object

M: model (model)

10: scanning display unit

12: shadow masking

14: pattern(s)

20: scanning unit

21: scanning head

30: operation interface section

31: regeneration operation part

32: scanning time stamp unit

32 a: sliding strip

32 b: search button

33: regeneration speed adjusting part

33 a: regenerative speed reduction unit

33 b: regeneration speed acceleration unit

34: scan head display/release button

35: scan area display/release button

36: regeneration/stop button

40: scanning part selecting part

41: upper jaw selection part

42: lower jaw selection part

43: occlusion selecting part

100: scanner

110: moving path

Detailed Description

Hereinafter, some embodiments of the present invention will be described in detail by way of exemplary drawings. It should be noted that, in assigning reference numerals to the structural elements of the respective drawings, the same reference numerals are assigned to the same structural elements as much as possible even though they are shown in different drawings. In describing the present invention, when it is judged that detailed description of related known structures or functions may obscure the gist of the present invention, detailed description thereof will be omitted.

In describing the structural elements of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only used to distinguish one structural element from another structural element, and the nature, order, sequence, or the like of the corresponding structural elements is not limited thereto. Also, unless otherwise defined, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms commonly used such as terms defined in dictionaries should be interpreted as having a meaning that is consistent with a meaning that is possessed by context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Fig. 1 is a schematic flowchart of a scan process regeneration method of the present invention, and fig. 2 is a flowchart showing a scan step in the scan process regeneration method of the present invention in more detail.

Referring to fig. 1 and 2, the scanning process reproducing method of the present invention includes a scanning step S10 of obtaining scanning data by scanning the scanning target object 1 with a scanner. In the scanning step S10, light reflected from the surface of the scanning object 1 is introduced into the scanner through an opening formed at one end of the scanner. The light introduced into the scanner interior is received by a camera formed in the scanner interior, and the camera acquires the received light as digital scan data through an imaging sensor connected thereto. In this case, the scan data may be at least one two-dimensional image data (this may correspond to step S11 of acquiring two-dimensional image data in the scanning step S10). On the other hand, the acquired two-dimensional image data may be displayed in real time by a scanning unit 20 described later, or may be used as data for generating three-dimensional volume data when the three-dimensional volume data is generated by structured light irradiated from a light projector provided inside the scanner to the scanning object 1.

On the other hand, after two-dimensional image data is acquired by the camera and the imaging sensor connected to the camera, the acquired plurality of two-dimensional image data may be combined to be converted into three-dimensional volume data (three-dimensional image generating step S12). The three-dimensional volume data may contain voxels (voxels) with graphical information in three-dimensional space, and as a result, the scan data may be displayed on a user interface through a collection of such three-dimensional volume data. However, in order to display the scan data on the user interface, each three-dimensional volume data is not displayed in a piecemeal manner, but it is necessary to go through the alignment step S13, and the plurality of three-dimensional volume data are aligned so as to be connected to each other and aligned in the alignment step S13. Connection, coordinate alignment, and the like between the generated three-dimensional volume data are performed through the alignment step S13, and such an alignment process may be performed in various ways, but preferably, the alignment step S13 may be performed using an Iterative Closest Point (ICP) algorithm that allows overlapping portions of one data and another data to be connected to each other.

Also, as described above, in the process of performing the scanning step S10, the status information of the scanner may be acquired together with the scan data (information acquisition step S20). In this case, various state information of the scanner can be obtained, but among them, position information and rotation information of the camera formed inside the scanner can be obtained. The number of cameras formed in the scanner may be one or more, and the number of cameras for obtaining the positional information and the rotational information may be one or more. The purpose of acquiring the position information and the rotation information by the camera is to finally acquire the distance information between the scanner and the scanning object.

Fig. 3 is a schematic view of a scanning target object and a scanner for scanning the scanning target object in the scanning process regeneration method of the present invention.

Referring to fig. 3, the scanning target 1 is scanned by a scanner. The scan target 1 may be a plaster model obtained by impression taking (impression tagging) or may be an actual oral cavity including teeth and gums of a patient. There are various kinds of scanners, but considering the characteristics and convenience of use of the present invention, a hand-held (hand-held) three-dimensional scanner is preferably used. Light reflected from the scanning object 1 enters the scanner through a scanning head of the scanner, and is formed into three-dimensional modeled scanning data through two-dimensional and three-dimensional image acquisition and alignment.

Fig. 4 is a diagram schematically illustrating a process of traveling from T1 to T6 and performing scanning when a scanner scans an object to be scanned in the scanning process reproducing method according to the present invention, and fig. 5 is a diagram schematically illustrating a relationship between a camera built in the scanner and the object to be scanned when the object to be scanned is scanned.

Referring to fig. 4 and 5, the scanner can scan the object 1 while moving it from one end to the other end. On the other hand, when the user scans through the scanner, the first scanning point T1 to the next scanning points T2, T3, T4, T5, and T6 are sequentially scanned. In performing the scanning, the plurality of scanning points T1, T2, T3, T4, T5, and T6 may have a portion overlapping each of the adjacent scanning points. As the scanning is performed in such a manner as to allow the overlapping portion, alignment between the data is performed, and finally, model data of a scanning object can be created.

On the other hand, when the scanner performs scanning, the position information of the camera acquired from the information acquisition step S20 may be in the form of a three-dimensional rectangular coordinate system expressed by x values, y values, and z values. The position information of the camera may be displayed as a relative position based on a specific point. Preferably, the coordinates at the start of scanning may be set as the origin (0, 0, 0), resulting in the relative coordinates of each scanning point.

The rotation information of the camera can be acquired in three angular forms represented by α, β, γ. In this case, α may represent an angle of the camera in the xy plane, β may represent an angle of the camera in the yz plane, and γ may represent an angle of the camera in the zx plane. Also, the rotation information of the camera can be acquired in the form of a 3 × 3 matrix. In this case, the 3 × 3 matrix may contain information on an angle on the xy plane, an angle on the yz plane, and an angle on the zx plane, and the rotation information represents information on an angle inclined with respect to the reference position, not information on the rotation speed and the like. The rotation information of the camera may be converted from a form of three angles represented by α, β, γ into a form of a 3 × 3 matrix, or vice versa from a form of a 3 × 3 matrix into a form of three angles, as necessary.

As described above, the positional information of the camera can be acquired in the form of a three-dimensional rectangular coordinate system, and the rotational information of the camera can be acquired in the form of a 3 × 3 matrix, but the positional information and the rotational information of the camera can be acquired at once in the form of a 3 × 4 matrix.

When the position information and the rotation information of the camera are acquired, the position information and the rotation information of the scanner head can be acquired by the position information and the rotation information of the camera acquired using the position information and the rotation information between the camera and the scanner head. More specifically, the scanning head is disposed at a predetermined distance and a predetermined angle from the camera due to the structural characteristics of the scanner, based on the positional information and the rotational information of the camera. Therefore, if the distance from the camera to the scanner head is added to the positional information and the rotational information of the camera and the angle formed between the camera head and the scanner head is reflected, the positional information and the rotational information of the scanner head can be derived. In this case, the position information of the scanning head can appear in various ways, but may be based on a portion corresponding to the center of the opening section shape of the scanner. The rotation information of the scanner head may be an angle included in a normal vector of a virtual plane including the cross section of the opening of the scanner.

When the information acquisition step S20 is performed, an operation step S30 of calculating the relative information between the scanner and the scanning object 1 based on the state information of the scanner may be performed. In the operation S30, the distance between the scanning head and the scanning object 1 acquired in the information acquisition step S20 may be measured. This may be acquired as distance data by calculating a linear distance and angle between a plurality of scanning points (for example, T1, T2, T3, T4, T5, and T6 may correspond thereto-however, the number of scanning points is not limited to 6, and a plurality of scanning points scanned when performing the scanning step S10 may correspond thereto) and the scanning head. Referring to fig. 5, as the camera moves (from C1 to C2, from C2 to C3), position information and rotation information of the camera may be acquired, and position information and rotation information of the scan head may be acquired through the position information and rotation information of the camera. Then, the distance and angle information between the scanning object 1 and the scanning head holder may be calculated, and the scanning head movement path 110 described later may be generated based on the distance and angle information calculated in the calculation step S30.

On the other hand, the positional information and the rotational information of the scanning head may be changed with the scanning time when the scanning step S10 is performed by the scanner. Therefore, the position information and the rotation information of the scanning head can be formed in a data-linked manner so as to have information on the scanning time at which the position information and the rotation information occur. This makes it possible to arrange the positional information and the rotational information of the scanning head in the order of scanning time. As the position information and the rotation information of the scanning head are arranged in the scanning time sequence, there is an advantage that a plurality of data can be reproduced in the time sequence.

Fig. 6 to 14 are diagrams illustrating a process of generating scan pattern data on a user interface in a scan process reproducing method of the present invention in chronological order.

Referring to fig. 6 to 14 as a whole, the scanning procedure reproducing method of the present invention may include a displaying step S40 of displaying the scan data in the form of the three-dimensional model M on the user interface through the scanning of the scan object 1. The model M completed by the scanning process may be displayed in the display step S40, but the model formation process until the model is completed may be displayed.

Referring to fig. 6 and 7, the user interface may include: a scan display unit 10 for displaying scan data in a three-dimensional model M; a scanning proceeding section 20 for displaying a scanning process; and an operation interface section 30 operable to operate on the three-dimensional model. When the scanning process is performed in real time or reproduced, the scan performing part 20 may visually display two-dimensional image data generated by the camera and the imaging sensor at corresponding times. On the other hand, the scan performing unit 20 and the scan display unit 10 may be displayed on the same screen, and the process of forming the three-dimensional model M corresponding to the same scanning time point and the two-dimensional image data acquired during the scanning process may be simultaneously reproduced. The scan proceeding unit 20 may be formed separately from the scan display unit 10, and the scan proceeding unit 20 may occupy a smaller area than the scan display unit 10 in order to more significantly recognize the three-dimensional model M.

On the other hand, the operation interface section 30 may perform various operations on the three-dimensional model M. In some cases, if the scan result is different from the user's expectation, the operation interface unit 30 may include an option to delete data of a specific portion, an option to confirm the reliability of data of the three-dimensional model M, an option to confirm the operation state of the scanner (waiting, scanning, etc.), and the like.

The operation interface section 30 may include a reproduction operation section 31. Normally, the scan display unit 10 displays only the final data displayed by forming the data from the start to the end of the scan into the three-dimensional model M, but the user interface may be switched to the playback mode by operating the playback operation unit 31 (for example, clicking).

When shifting to the reproduction mode, a plurality of sections 32 to 36 corresponding to the reproduction mode may be further displayed at the lower end of the scan display section 10. The scan time stamp section 32 can visually display the time of scanning in the reproduction mode, and in this case, the scan time may appear in accordance with the movement of the search button 32b moving from one end to the other in the form of the slider 32 a. That is, when the search button 32b is located at one end (e.g., the left-side end of the slider), the scanning time may correspond to the scanning start time, and when the search button 32b is located at the other end (e.g., the right-side end of the slider), the scanning time may correspond to the scanning end time. In the display step S40 of the present invention, the reproduction can be performed so that the formation process of the scan data is displayed in chronological order in the reproduction mode. The formation process of the scan data means that the scan data acquired in the above-described scanning step S10 is displayed in chronological order of acquiring the scan data.

On the other hand, the scanning time stamp unit 32 can move a specific point of the slider 32a to a scanning time point corresponding to the specific point, and can reproduce the scanning process from the scanning time corresponding to the specific point. Alternatively, it may be moved to a scanning time point desired by the user by clicking and dragging (drag & drop) the search button 32 b.

Also, the displaying step S40 may be configured such that when the formation process of the reproduction scan data is being performed, the reproduction speed can be adjusted by the reproduction speed adjusting section 33 formed on the user interface. The regeneration-rate adjustment unit 33 includes a regeneration-rate deceleration unit 33a and a regeneration-rate acceleration unit 33b, and the regeneration-rate deceleration unit 33a may be generally indicated by the symbol "+", and the regeneration-rate acceleration unit 33b may be generally indicated by the symbol "+". The regeneration speed currently applied when the regeneration process is performed may be displayed between the regeneration speed decelerating section 33a and the regeneration speed accelerating section 33b, and various adjustments may be made to the regeneration speed, such as × 0.5 times, × 1.0 times, × 1.5 times, × 2.0 times, × 2.5 times, and × 3.0 times the reference speed.

On the other hand, referring to fig. 7 to 12, in the display step S40, when the forming process of the reproduction scan data, one end of the shape 100 of the scanner including the scan head may be displayed on the user interface (in more detail, on the scan display section 10). As the shape 100 of the scanner is displayed on the scan display section 10, when the user scans the scanning target object 1, it is possible to visually confirm which position and rotation (inclination angle) the scanning is performed by, and to feed back the scan shortage portion. Also, the shape 100 of the scanner is displayed in a semi-transparent manner on the user interface, so that the state of the scanner including the scanning head and the scan data can be reproduced at the same time. That is, when the shape 100 of the scanner is displayed to be semi-transparent, the scanner graphic may cover a part or all of the scan data displayed in the form of the three-dimensional model M, and thus the scan data and the state of the scanner including the scanning head may be confirmed together by adjusting the transparency of the shape 100 of the scanner.

In this case, the shape 100 of the scanner including the scanning head and the three-dimensional model M can be reproduced to display the positional information and the rotational information of the scanning head, the distance and the angle information with the scanning object 1, which are acquired in the above-described information acquisition step S20 and the calculation step S30. That is, when the scanning process is reproduced in the display step S40, a plurality of pieces of information sequentially acquired in accordance with the display time can be visually recognized on the scan display section 10. In particular, if the scanner rotates when scanning the scanning target object 1, it can be said that the three-dimensional model M rotates as if it rotates with respect to the scanning target object 1 when the scanner scans.

On the other hand, if it is necessary to confirm only the formation process of the scan data without wanting to see the scan head at the time of reproducing the scan process, the scan head display/release button 34 formed on the scan display unit 10 side is clicked to prevent the shape 100 of the scanner including the scan head from being displayed. Since the shape 100 of the scanner is not displayed, the process of acquiring the scan data forming the three-dimensional model M can be observed more carefully.

Referring to fig. 13 and 14, a scanning region selecting unit 40 may be formed at one end of the scan display unit 10. For example, the scan region selector 40 may be formed at the upper end of the scan display unit 10, and the scan region selector 40 may include a maxilla selector 41, a mandible selector 42, and a bite selector 43. When the reproduction mode is entered by activating the reproduction operation unit 31 (for example, clicking), only the scanning process of the upper jaw may be reproduced if the upper jaw selection unit 41 is selected, and only the scanning process of the lower jaw may be reproduced if the lower jaw selection unit 42 is selected. When the occlusion selecting unit 43 is selected in the regeneration mode, only the process of scanning the maxillary/mandibular occlusion form to form the occlusion between the upper jaw and the lower jaw may be regenerated. In this case, the portion where the bite information is acquired can be displayed in a manner distinguished from the upper jaw and the lower jaw, which can be visually displayed in at least one of color, shading, and pattern 14. On the other hand, the scan process of the upper jaw, the scan process of the lower jaw, and the scan process of the occlusion may be classified in time series, and thus in order to separate and reproduce the scan processes according to each scan process, the scan data, the position information of the scan head, and the rotation information may be divided into a plurality of groups in time series. In this way, the maxillary scanning process and the mandibular scanning process, i.e., the occlusal scanning process, can be observed separately, and thus there is an advantage in that the user can quickly obtain feedback for a specific scanning process without checking the entire scanning process.

On the other hand, in the reproduction mode as described above, a portion scanned at each scanning time point can appear in the form of a shadow 12 on the three-dimensional model M displayed on the scanning display section 10. The user can receive feedback on the scan shortage with reference to the moving path of the shadow 12 or the like, and can be used as reference for the subsequent scan.

Fig. 15 is a diagram showing a state where a scanning path is displayed on a user interface in the scanning process reproduction method of the present invention.

Referring to fig. 15, in the scan procedure reproducing method of the present invention, the moving path 110 of the scan head may be further displayed in the displaying step S40. The moving path 110 of the scanning head is constituted by connecting the position information of the scanning head in time series. Therefore, each point of the movement path 110 of the scanning head may include scanning time information (scanning time point), and when a part of the movement path 110 of the scanning head is selected, the reproduction may be performed by moving to the scanning time point (reproduction position) corresponding to the point. This has the following advantages: the user can visually confirm the moving path 110 of the scanning head and can receive feedback for the scanning process based on the moving path 110 of the scanning head, so that the feedback can be fast.

The above description is merely an exemplary description of the technical idea of the present embodiment, and a person having ordinary skill in the art to which the present embodiment belongs can make various modifications and variations within a range not departing from the essential characteristics of the present embodiment.

Therefore, the present embodiment is not intended to limit the technical idea of the present embodiment, but to illustrate the present embodiment, and the scope of the technical idea of the present embodiment is not limited to the embodiments. The scope of the present embodiment should be construed by the claims of the present invention, and all technical ideas within the equivalent scope thereof should be construed to be included in the claims of the present embodiment.

Industrial applicability

The invention provides a scanning process regeneration method, which can simulate and display the scanning process of obtaining the scanning data through the pre-stored scanning data.