Abstract: The present invention provides an alignment state indicating apparatus and an alignment state indicating method implemented by the apparatus, the apparatus comprising: a case having an opening which is open so that an object in the form of light enters into the case; an image capturing unit which is disposed in the case, and receives light incident through the opening of the case to obtain raw data; a control unit which performs data connection and alignment between three-dimensional data generated through image capturing of the image capturing unit, and determines whether an alignment error has occurred; and an actuator which vibrates when the alignment error has occurred.

Abstract: Provided is a method of setting a scan region, the method including: placing a target object on an upper surface of a jig of a three-dimensional scanner in such a manner that at least one portion of a target object image representing a shape of the target object is plotted on an input region; determining, by a control unit, a predetermined upper portion of the input region, as a scan region, from a jig image representing the shape of the jig; and generating, by the control unit, a three-dimensional model of the target object on the basis of the target object image resulting from scanning the scan region.

Abstract: Provided is a data processing method according to the present disclosure including: a scan data acquiring operation of acquiring scan data expressing an object, a reliability determining operation of determining a reliability of at least one evaluation area including at least one unit area for evaluating the scan data, and an indicating operation of indicating the evaluation area as a predetermined mark depending on the reliability of the evaluation area.

Abstract: The present disclosure relates to an apparatus and method for generating a virtual model. The apparatus according to the present disclosure comprises: a scanner that acquires a continuous 2D image within a measurement space; and a model generation unit for generating a three-dimensional virtual model by converting the image acquired from the scanner, wherein the model generation unit removes an area from the three-dimensional virtual model according to the reliability of data and generates a final model on the basis of the remaining area.

Abstract: Provided are an intraoral image processing method and an intraoral image processing apparatus. The intraoral image processing method according to an embodiment may include: obtaining a three-dimensional oral cavity model of an oral cavity; obtaining curvature information of the three-dimensional oral cavity model; obtaining roughness information of the three-dimensional oral cavity model, based on the curvature information; obtaining a color of the three-dimensional oral cavity model, based on the roughness information; and displaying the three-dimensional oral cavity model, based on the obtained color.

Abstract: A method for generating a three-dimensional model through data matching according to an embodiment of the present disclosure comprises: a maxillary scanning step of acquiring maxillary oral data including maxillary teeth by scanning the maxilla of a patient by using an oral scanner, a mandibular scanning step of acquiring mandibular oral data including mandibular teeth by scanning the mandible of the patient by using the oral scanner, an occlusion step of acquiring occlusal oral data in a state in which the maxillary teeth and the mandibular teeth are occluded, by using the oral scanner; a face scanning step of acquiring first facial data by scanning a face of the patient by using the oral scanner; and a matching step of matching the first facial data with at least one of the maxillary oral data, the mandibular oral data, and the occlusal oral data.

Abstract: Disclosed are an apparatus and method for setting a margin line and a recording medium, wherein the apparatus and method set a margin line corresponding to the outline of the boundary between a tooth and a prosthesis on the basis of three-dimensional virtual model data of the tooth obtained by using a three-dimensional scanner such as an oral scanner or the like. The method for setting a margin line according to an embodiment of the present disclosure, comprises the steps of: generating curve information about the peripheral area of the margin line candidate points selected in a three-dimensional virtual model obtained for a tooth; and setting a margin line indicating the outline of the boundary between the tooth and a prosthesis on the basis of the curve information.

Abstract: A method for controlling a three-dimensional scanning system includes a scanning step of scanning a target by using a three-dimensional scanner and acquiring a distance between the three-dimensional scanner and the target, and a switching step of switching an activation state of at least one feedback means on the basis of the distance.

Abstract: An image filtering method according to the present disclosure comprises: acquiring a two-dimensional image through a scanner, and acquiring color information of at least part of data of the two-dimensional image, and then determining whether the acquired color information is included in a reference color range. When the acquired color information is included in the reference color range, image data remaining after deleting corresponding data from the two-dimensional image is converted into three-dimensional volume data. Meanwhile, when the reference color range is determined, a reference color may be pre-configured data or may be predetermined by a user, or learning for defining a reference color range may be performed through image data acquired by repetitively inputting reference images.

Abstract: In an aligning method by grouped data according to the present disclosure, while initial grouped data is generated and a process of generating and aligning three-dimensional image data is performed, if a state in which pieces of three-dimensional volume data are not connected to each other continues for a predetermined time or longer, new grouped data is generated, so that at least one discontinuous grouped data may be generated. If three-dimensional volume data stored in new grouped data and three-dimensional volume data of previously generated grouped data are identified to have overlapping parts therebetween, an additional alignment step is performed to connect the overlapping parts to each other. As a result, a data gap is supplemented, and a patient's entire oral model data can be easily obtained.

Abstract: A method for using an integrated library according to the present invention is characterized in that when a user selects a target position, an abutment to be applied to an oral cavity of a patient is loaded, and when an abutment model is selected in a database thereof, margin line data linked with the selected abutment model can be displayed together. In addition, the margin line data is not only simply displayed in a thumbnail displaying step, but also can be linked with oral data to be used together. The margin line data can also be edited so as to have a more appropriate form according to the user's need and be stored, such that the existing margin line data can be substituted with edited margin line data.

Abstract: In a method for matching structure data according to the present disclosure, scanned data is used for a prepared part and library model data loaded in advance in a library is used for an unprepared part, such that the method has an advantage of improving reliability of oral model data required for an implant crown procedure.

Abstract: According to the present disclosure, partial precision shape data is added to overall data by combining scan data obtained by a first scanner and a second scanner, respectively, and thus, missing data in a scan of the first scanner is supplemented by a scan of the second scanner. There is an advantage of being able to derive highly reliable data through such a supplementary process, and a user can provide a more suitable treatment to the patient.

Abstract: The present disclosure relates to a method for self-investigating an optical element embedded in an intraoral scanner, and a system using the same. The reliability of an intraoral scanner may decrease due to foreign matter attached to an optical element. Accordingly, the present disclosure provides a prescribed method for investigating foreign matter attached to an optical element, and a system using the same, wherein an alarm providing notification of the need to inspect the optical element is generated when it is determined that foreign matter has stained the optical element. According to said investigation method and system, a user of an intraoral scanner can automatically determine the presence or absence of foreign matter when scanning an object (patient's affected area), and thus can service the optical element or replace a part in which the corresponding component is formed. Therefore, there is an advantage of improving the scanning efficiency and data reliability of the intraoral scanner.

Abstract: A data processing method includes obtaining a scan shot representing an object, aligning the scan shot with a pre-formed at least one inactive cluster, and selectively merging an active cluster including the scan shot and the inactive cluster based on whether the scan shot is aligned with the inactive cluster.

Abstract: A structured light projection optical system for obtaining 3D data of an object surface includes a structured light projection optical part configured to project a plurality of patterns onto an object or a screen, and an imaging optical part configured to obtain 3D data by photographing the patterns being projected from the structured light projection optical part. The structured light projection optical part includes a plurality of light sources, and a plurality of pattern masks. As the plurality of light sources are turned on and off, the pattern mask matches any one of the plurality of light sources illuminating a light, and the plurality of patterns are projected on the object or the screen by the pattern mask. Accordingly, various patterns can be effectively projected, real-time measurement can be easily performed through a quick pattern change, and the accurate 3D data can be obtained.

Abstract: An image processing method may include steps of obtaining a plurality of image data from an object, generating, from the image data, a three-dimensional (3-D) model having at least two different representation modes, and displaying the generated 3-D model. There is an advantage in that a user can check various information of a 3-D model without changing a representation mode by displaying a 3-D model having at least two different representation modes.

Abstract: The present invention relates to a three-dimensional intraoral scanner specifically comprising: a case which can be inserted into and withdrawn from the oral cavity, and has an opening portion which is open to allow the form of the inside of the oral cavity (hereinafter, referred to as an ‘image’) to be incident into the case in the form of light via an end portion thereof; at least one camera which is arranged inside the case to transmit the light incident via the opening portion of the case; a light projector which is arranged on one side of the at least one camera and emits light into the oral cavity via the opening portion; and a single polarized filter which positioned between the at least one camera and the opening portion at a position spaced a set distance (d) from the front end of the at least one camera. Thus, the present invention provides the advantages of making it possible to manufacture a product having a slim size and improve the reliability with which an object to be measured can be measured.

Abstract: The present invention relates to a method of processing three-dimensional scan data for manufacture of dental prosthesis, the method identifies a position for an implant procedure on the basis of image data for an oral structure, and generates aligned image data by retrieving, from a library, data corresponding to a scan body or an abutment, only a part of which has been scanned, by replacing a part or the whole of the image data with the retrieved data, and by aligning a position and a direction of the image data. By using the method, user can easily identify an oral structure from the image data obtained by scanning partial shape of the scan body or the abutment, and the method provides feedback to the user so that the method guides the user to correct measurement. Therefore, the prosthesis can be manufactured more quickly due to reduced scan time.