Digital scan body alignment method and device using the same
The present invention relates to a digital scan body alignment method and a device using the same. The present invention corrects scan data through library data corresponding to image data on oral structure. At that time, to achieve best-fit of aligning the library data to the scan data initially, the data alignment can be performed by using a first alignment step. In order to accomplish data correction by more accurate data alignment, a second alignment step can be performed using the library data which includes shape information and axis information. By performing the second alignment step, corrected data having higher reliability can be formed, and a more precise prosthesis can be provided to a patient.
1 . A method for aligning a digital scanbody, comprising:
a library data selection step of selecting one or more library data among a plurality of library model data stored in a library by a control unit;
an image acquisition step of acquiring image data by scanning an oral structure including a structure through a scanner; and
an alignment step of aligning the image data and the library data by the control unit,
wherein in the alignment step, the structure in the image data and the library data is matched and aligned based on at least one of central axis, direction, and height of the library data,
wherein a corrected scanbody is generated to correct insufficiently scanned data of scan data included in the image data, by coupling the library data and the scan data, and
wherein the library data have information of the central axis and information of the height based on a curved shape and a top surface shape.
2 . The method of claim 1 , wherein the image data acquired in the image acquisition step is three-dimensional (3D) scan data acquired through the scan.
3 . The method of claim 1 , wherein the library data is data on a scanbody which is to be implanted into an oral cavity.
4 . The method of claim 1 , wherein the alignment step comprises aligning the image data and the library data by using a best-fit algorithm.
5 . The method of claim 1 , wherein the alignment step comprises performing the alignment by matching shape information and axis information of the scan data on the structure, acquired in the image acquisition step, with shape information and axis information of the library data.
6 . The method of claim 1 , wherein the alignment step comprises one or more alignment steps.
7 . The method of claim 6 , wherein the alignment step comprises a first alignment step of aligning the image data and the library data by using a best-fit algorithm.
8 . The method of claim 7 , wherein the alignment step further comprises a second alignment step of aligning the image data and the library data by using an algorithm different from the first alignment step.
9 . The method of claim 8 , wherein the second alignment step comprises performing additional alignment by matching shape information and axis information of the scan data on the structure, acquired in the image acquisition step, with shape information and axis information of the library data.
10 . The method of claim 9 , further comprising a reliability check step of determining whether an error between the library data and the scan data acquired from the image data is equal to or less than a preset value, after the second alignment step.
11 . The method of claim 10 , wherein the reliability check step comprises performing additional alignment when the error between the library data and the scan data exceeds the preset value, and generating the corrected scan body on the basis of the aligned data when the error between the library data and the scan data is equal to or less than the preset value.
12 . A method for aligning a digital scanbody, comprising:
an image acquisition step of acquiring image data by scanning an oral structure including a structure through a scanner;
a data selection step of selecting one or more library data among a plurality of library model data stored in a library by a control unit; and
an alignment step of aligning the image data and the library data by the control unit,
wherein in the alignment step, the structure in the image data and the library data is matched and aligned based on at least one of central axis, direction, and height of the library data,
wherein a corrected scanbody is generated to correct insufficiently scanned data of scan data included in the image data, by coupling the library data and the scan data, and
wherein the library data have information of the central axis and information of the height based on a curved shape and a top surface shape.
13 . The method of claim 12 , wherein model information including shape information and axis information is acquired from the scan data on the structure, acquired in the image acquisition step.
14 . The method of claim 13 , further comprising selectively searching for library data corresponding to the model information on the structure.
15 . The method of claim 14 , further comprising selecting one or more library data among a plurality of library model data stored in the library and searched in the searching of the library.
16 . The method of claim 15 , wherein the library data comprises shape information and axis information.
17 . The method of claim 16 , wherein the alignment step comprises performing the alignment by matching shape information and axis information, acquired from the scan data with shape information and axis information of the library data.
18 . A device for aligning a digital scanbody, comprising:
a scan unit configured to acquire image data by scanning an oral structure including a structure;
a control unit configured to perform data calculation by using the image data acquired through the scan unit and stored library data; and
a display unit configured to display a scan process of the scan unit and an alignment process of the control unit,
wherein the control unit is configured to match and align the structure in the image data and the library data based on at least one of central axis, direction, and height of the library data,
wherein a corrected scanbody is generated to correct insufficiently scanned data of scan data included in the image data, by coupling the library data and the scan data, and
wherein the library data have information of the central axis and information of the height based on a curved shape and a top surface shape.
19 . The device of claim 18 , wherein the scan unit is a handheld 3D scanner.
20 . The device of claim 18 , wherein the control unit comprises a library model selection unit configured to select library data from a plurality of library model data stored in a library, a scan data analysis unit configured to analyze information of the image data acquired through the scan unit, and a data matching unit configured to match and align the library data and the image data by comparing information of the library data and information of the image data.
21 . The device of claim 18 , wherein the control unit further comprises a reliability check unit configured to check the reliability of a corrected scanbody aligned by the data matching unit.