System for routine surface anthropometry using reprojection registration

R. J. Sadleir, R. A. Owens, P. E. Hartmann

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Range data measurement can be usefully applied to non-invasive monitoring of anthropometric changes due to disease, healing or during normal physiological processes. We have developed a computer vision system that allows routine capture of biological surface shapes and accurate measurement of anthropometric changes, using a structured light stripe triangulation system. In many applications involving relocation of soft tissue for image-guided surgery or anthropometry it is neither accurate nor practical to apply fiducial markers directly to the body. This system features a novel method of achieving subject re-registration that involves application of fiducials by a standard data projector. Calibration of this reprojector is achieved using a variation of structured lighting techniques. The method allows accurate and comparable repositioning of elastic surfaces. Tests of repositioning using the reprojector found a significant improvement in subject registration compared to an earlier method which used video overlay comparison only. It has a current application to the measurement of breast volume changes in lactating mothers, but may be extended to any application where repeatable positioning and measurement is required.

Original languageEnglish (US)
Pages (from-to)1912-1926
Number of pages15
JournalMeasurement Science and Technology
Volume14
Issue number11
DOIs
StatePublished - Nov 2003
Externally publishedYes

Keywords

  • Human lactation
  • Image registration
  • Image-guided surgery
  • Shape measurement
  • Size measurement
  • Stereotactic surgery

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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