A method of multi-view intraoral 3D measurement

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In dental restoration, its important to achieve a high-Accuracy digital impression. Most of the existing intraoral measurement systems can only measure the tooth from a single view. Therfore1/4if we are wilng to acquire the whole data of a tooth, the scans of the tooth from multi-direction ad the data stitching based on the features of the surface are needed, which increases the measurement duration and influence the measurement accuracy. In this paper, we introduce a fringe-projection based on multi-view intraoral measurement system. It can acquire 3D data of the occlusal surface, the buccal surface and the lingual surface of a tooth synchronously, by using a senor with three mirrors, which aim at the three surfaces respectively and thus expand the measuring area. The constant relationship of the three mirrors is calibrated before measurement and can help stitch the data clouds acquired through different mirrors accurately. Therefore the system can obtain the 3D data of a tooth without the need to measure it from different directions for many times. Experiments proved the availability and reliability of this miniaturized measurement system..

Original languageEnglish
Title of host publicationInternational Conference on Photonics and Optical Engineering, icPOE 2014
EditorsWeiguo Liu, Anand Asundi, Chunmin Zhang, Ailing Tian
PublisherSPIE
ISBN (Electronic)9781628415650
DOIs
StatePublished - 2015
EventInternational Conference on Photonics and Optical Engineering, icPOE 2014 - Xi'an, China
Duration: 13 Oct 201415 Oct 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9449
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Conference on Photonics and Optical Engineering, icPOE 2014
Country/TerritoryChina
CityXi'an
Period13/10/1415/10/14

Keywords

  • 3D measurement
  • digital impression
  • intraoral
  • multi-view
  • phase measurement

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