ANTHROPOMETRIC OPTICAL-SURFACE IMAGING-SYSTEM REPEATABILITY, PRECISION, AND VALIDATION

Disciplines using human body Surface dimensions require accurate, repe atable measurements. This study presents a design for the analysis of repeatability, precision, and validation of a new anthropometric devic e. This model enables estimation of the proportion of the total variat ion attributable to each level of data collection. This model is appli ed to an analysis of repeatability, precision, and validation of the C encit Imaging System, a new optical surface scanner. Twenty-seven faci al landmarks were marked on 10 men and 10 women at two measurement ses sions. Two images were scanned during each session, and each image was digitized twice. The Cencit Imaging System results were compared with a previously validated digitizer. The Cencit Imaging System was found to produce accurate, highly repeatable images. Much of the error in t his study is attributable to human error in marking landmarks on the s ubjects. The new imaging system will prove useful in a variety of anth ropometric applications.