Shape Analysis of 3D Head Scan Data for U.S. Respirator Users

Details

• Personal Author:
  Benson S ; Lynch S ; Slice DE ; Viscusi DJ ; Zhuang Z
• Description:
  In 2003, the National Institute for Occupational Safety and Health (NIOSH) conducted a head-and-face anthropometric survey of diverse, civilian respirator users. Of the 3,997 subjects measured using traditional anthropometric techniques, surface scans and 26 three-dimensional (3D) landmark locations were collected for 947 subjects. The objective of this study was to report the size and shape variation of the survey participants using the 3D data. Generalized Procrustes Analysis (GPA) was conducted to standardize configurations of landmarks associated with individuals into a common coordinate system. The superimposed coordinates for each individual were used as commensurate variables that describe individual shape and were analyzed using Principal Component Analysis (PCA) to identify population variation. The first four principal components (PC) account for 49% of the total sample variation. The first PC indicates that overall size is an important component of facial variability. The second PC accounts for long and narrow or short and wide faces. Longer narrow orbits versus shorter wider orbits can be described by PC3, and PC4 represents variation in the degree of ortho/prognathism. GeometricMorphometrics provides a detailed and interpretable assessment ofmorphological variation that may be useful in assessing respirators and devising new test and certification standards. [Description provided by NIOSH]
• Subjects:
  Occupational Health Personal Protective Equipment Respiratory Protective Devices Safety
• Keywords:
  Anthropometry Humans Personal-protection Personal-protective-equipment Respirators Respiratory-protection Respiratory-protective-equipment
• ISSN:
  1687-6172
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Florida ; OSHA Region 3 ; OSHA Region 4 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  2010
• NIOSHTIC Number:
  nn:20036697
• Citation:
  EURASIP J Adv Signal Process 2010 Jan; 2010:248954
• Email:
  zaz3@cdc.gov
• Federal Fiscal Year:
  2010
• Peer Reviewed:
  True
• Source Full Name:
  EURASIP Journal on Advances in Signal Processing
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e04623dd8cb639b8ed57412e0c39b68e22dd871df67bc97f1ad677ac56f9fe6ea0f916f22b3a4a05f24979bc3405507cc771c09bf95a8fc83f027382779a8f2d
• Download URL:
  https://stacks.cdc.gov/view/cdc/188017/cdc_188017_DS1.pdf
• File Type:
  [PDF - 2.28 MB ]