Next viewing directions for the scanning of dental impressions

Minho Chang, Ji Woong Oh, Sang C. Park

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper proposes a scanning procedure for a structured light system (SLS) to measure dental impressions. Although increasing the number of scanning orientations may improve the quality of a scanned model, it is desirable to minimize the number of scanning operations to time and data storage. We attempt to reduce the number of scanning operations to the least number that will still acquire a complete model. The proposed procedure must resolve two sub-problems: (1) identification of missing areas from given range images, and (2) determination of the next viewing directions to fill those missing areas. If we consider range images as triangular meshes, the sub-problems can be solved by using well-known geometric algorithms. The triangular meshes, however, may consist of tens of millions of triangles, which require an unacceptably long time to compute. To cope with this problem, we propose two key ideas: (1) utilizing an inherent attribute of a range image, the map structure; (2) utilizing a graphics board to accelerate the evaluation of visibility. Our demonstration proves that the proposed approach improves the quality of scanned models and reduces the number of scanning operations.

Original languageEnglish
Pages (from-to)24-32
Number of pages9
JournalCAD Computer Aided Design
Volume66
DOIs
Publication statusPublished - 2015 Sep 1

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Scanning
Visibility
Demonstrations
Data storage equipment

Keywords

  • Structured light system Dental impression Ceramic restorations Global interference Range image Graphics board

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

Cite this

Next viewing directions for the scanning of dental impressions. / Chang, Minho; Oh, Ji Woong; Park, Sang C.

In: CAD Computer Aided Design, Vol. 66, 01.09.2015, p. 24-32.

Research output: Contribution to journalArticle

Chang, Minho ; Oh, Ji Woong ; Park, Sang C. / Next viewing directions for the scanning of dental impressions. In: CAD Computer Aided Design. 2015 ; Vol. 66. pp. 24-32.
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