DEVELOPMENT OF A PROTOCOL FOR DIGITISATION OF THE HEAD

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Authors
  1. Coutu, E.
  2. Meunier, P.
  3. Chamberland, A.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Les Consultants Genicom Inc, Montreal QUE (CAN)
Abstract
Laser head scanning of a representative sample of the Canadian Land Forces was one the elements of the large-scale anthropometric survey that ws to take place in the summer of 1997. Although three-dimensional laser scanners are one of the most accurate and sophisticated means of capturing surface morphology, many factors in the methodology can spoil of the results. Head movements during scanning and type of scanning cap used are two of those factors. The methodology that has evolved for head scanning has been more appropriate for experimental laboratory work than for large-scale surveys, where time is of the essence. Thus, it was necessary to investigate ways to improve throughput and reliability through modification of the scanning protocol. The two main areas for improvement were investigated: head stabilisation and type of scanning caps. Head stability was measured through a 3D motion-sensor positioned on subjects' heads. The results showed that significant improvements were made using an adjustable headrest. The headrest was optimised for sturdiness, adjustment, and invisibility in the scan. A "V" shaped device placed on the nape of the subject was found the most appropriate design. Several scanning cap prototypes were designed and tested to identify cap characteristics that would yield the best results. The results indicated that brightly coloured lycra caps were the most suitable for the survey.
Keywords
Laser head scanning;3D anthropometry
Report Number
DCIEM-97-CR-41 — Contractor Report
Date of publication
15 Oct 1997
Number of Pages
105
DSTKIM No
98-00640
CANDIS No
507524
Format(s):
Hardcopy;Document Image stored on Optical Disk

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