A fault-tolerant offset algorithm for measured data with defects

Xiang Jia Li, Ning Dai, Wen He Liao, Yu Chun Sun, Yong Bo Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Offsetting of measured data, as a basic geometric operation, has already been widely used in many areas, like reverse engineering, rapid prototyping and NC machining. However, measured data always carry typical defects like caves and singular points. A fault-tolerant offset method is proposed to create the high quality offset surface of measured data with such defects. Firstly, we generated an expansion sphere model of measured data with the radius equivalent to the offset length. Secondly, using the computational geometry application of convex hull, we acquire the data of outermost enveloping surface of this expansion sphere model. Finally, we use local MLS projection fitting method to wipe out existing defects, and generate the high-quality triangular mesh surface of the offset model. The offset surface generated by this method is suitable for practical engineering application due to its high efficiency and accuracy.

Original languageEnglish (US)
Title of host publicationEngineering Solutions for Intensification of Production
PublisherTrans Tech Publications Ltd
Pages344-350
Number of pages7
ISBN (Print)9783038350354
DOIs
StatePublished - 2014
Event2014 2nd International Conference on Manufacturing Engineering and Technology for Manufacturing Growth, METMG 2014 - Miami, FL, United States
Duration: Jan 20 2014Jan 21 2014

Publication series

NameAdvanced Materials Research
Volume902
ISSN (Print)1022-6680

Conference

Conference2014 2nd International Conference on Manufacturing Engineering and Technology for Manufacturing Growth, METMG 2014
CountryUnited States
CityMiami, FL
Period1/20/141/21/14

Keywords

  • Fault-tolerance
  • Intersection-free
  • MLS
  • Measured data
  • Offset

ASJC Scopus subject areas

  • Engineering(all)

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