Assessing the effectiveness of filters for shape matching

R. Sung, H. J. Rea, J. R. Corney, D. E R Clark, J. Pritchard, M. L. Breaks, R. A. MacLeod

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


Collaborative re-use of design and manufacturing data is one way that global e-commerce could significantly reduce development costs and lead times of new products. However the proliferation of web based catalogues for standard components (e.g. brochure-ware for nuts and washers etc.) only hints at the possible productivity gains if a 3D search engine could be created. Consequently the research reported here is motivated by the belief that shape matching technology is key to enabling a much deeper form of Internet-based collaborative commerce. This paper describes the coarse "shape" filters that support a 3D, Internet-based search engine, known as ShapeSifter, whose ultimate aim is to enable the location of parts already in production that have a shape similar to a desired "newly designed" part. The challenge of the research is to identify the key metrics that produce meaningful characterizations of 3D models for similarity comparison purposes. In this context the work reported focuses on the use of novel indices based on an object's convex-hull and surface area distribution to carry out a coarse filtering of candidates prior to the application of more detailed analysis (e.g. the construction of multi-dimensional feature vectors). In doing this, the paper describes the crucial role played by a benchmark database of geometrical similar objects.

Original languageEnglish
Title of host publicationASME 2002 International Mechanical Engineering Congress and Exposition
Subtitle of host publicationAmerican Society of Mechanical Engineers, Design Engineering Division
Number of pages10
Publication statusPublished - 2002
EventASME 2002 International Mechanical Engineering Congress and Exposition - New Orleans, LA, United States
Duration: 17 Nov 200222 Nov 2002


ConferenceASME 2002 International Mechanical Engineering Congress and Exposition
Abbreviated titleIMECE2002
Country/TerritoryUnited States
CityNew Orleans, LA


  • 3D Similarity Search
  • Convex-hull
  • Geometric Feature Matching
  • Part-sourcing
  • Shape Matching
  • Surface Moment Metric (SMM)


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