Title:
METHOD FOR DETECTING POSITION DEVIATION OF ATTACHMENT
Document Type and Number:
WIPO Patent Application WO/2024/094193
Kind Code:
A1
Abstract:
One aspect of the present application provides a computer-executed method for detecting a position deviation of an attachment, comprising: acquiring first, second and third three-dimensional digital models, wherein the third three-dimensional digital model is a three-dimensional digital model representing a first attachment, the first three-dimensional digital model is a three-dimensional digital model representing a first tooth on which the first attachment is not mounted, and the second three-dimensional digital model is a three-dimensional digital model representing the first tooth on which the first attachment is actually mounted; on the basis of a local coordinate system of the first and second three-dimensional digital models, performing coarse registration on the first and second three-dimensional digital models; using an ICP method to perform fine registration on the first and second three-dimensional digital models having undergone the coarse registration; and on the basis of the result of the fine registration, performing search along the bottom surface of the third three-dimensional digital model at a target mounting position, so that the third three-dimensional digital model is aligned with a part of the first attachment of the second three-dimensional digital model, so as to obtain a deviation between the actual mounting position of the first attachment and the target mounting position.
Inventors:
WANG MINGZHENG (CN)
FENG YANG (CN)
FENG YANG (CN)
Application Number:
PCT/CN2023/129747
Publication Date:
May 10, 2024
Filing Date:
November 03, 2023
Export Citation:
Assignee:
SHANGHAI EA MEDICAL INSTRUMENTS COMPANY LTD (CN)
International Classes:
G06T7/30
Foreign References:
| CN115040274A | 2022-09-13 | |||
| CN107908818A | 2018-04-13 | |||
| CN107704699A | 2018-02-16 | |||
| CN109259875A | 2019-01-25 | |||
| US20150216626A1 | 2015-08-06 |
Attorney, Agent or Firm:
INTELIGHT IP LAW FIRM (CN)
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