A 3D Method for Fit Assessment of a Sizing System

摘要

A three-dimensional (3D) method for the evaluation of a sizing system via objective fit assessment is introduced in this study. Taking the evaluation of a helmet sizing system as an example, geometrical models of the human head surfaces of a target population are generated based on 3D anthropometric measurement at first. Then a helmet model for each size is prepared. For each individual, a helmet model of his corresponding size is virtually worn on his head with proper relative position and orientation. After that, objective fit assessment criteria are calculated. Finally, Statistical analysis on these criteria provides an objective evaluation of the sizing system. This method affords a rapid, low-cost, and quantitative approach to carry out fit assessment on a sizing system when critical fit is concerned.