Automated Visual Anthropometry for Three-dimensional Assessment of Respirators (AVATAR)

Military respirator masks provide the Warfighter with life critical protection against chemical, biological, radiological, and nuclear (CBRN)threats. To ensure the safety, comfort, and effectiveness of the American Warfighter, it is essential that every Warfighter be assigned arespirator that is properly sized and fitted. However, current methods for sizing and fitting respirators depend on manual, partially subjectiveprocesses, and no single tool enables end-to-end automatic quantitative assessment and comparison of protective fit. We propose a softwaresystem enabling Automated Visual Anthropometry for Three-dimensional Assessment of Respirators (AVATAR). The AVATAR system consists ofadvanced 3D reconstruction and respirator fit assessment software, requiring only a smartphone with an integrated camera. The softwareprocesses 2D video of the users face, taken at arms length from multiple viewpoints, and estimates the users 3D facial shape parameters toproduce a robust quantitative prediction of respirator fit. AVATAR directly supports the Warfighter by enabling untrained personnel to selfadministerrespirator sizing and fitting procedures through the automatic extraction and analysis of useful anthropometric data.