Next-Generation Custom-Fit Reusable Respiratory Protective Device with Continuous Fit Monitoring. S Park, Y Tian, M Bergman, Dr. Ziqing Zhuang, J Pollard, S Jayaraman.

As the first step in customizing the prototype, a set of 21 facial anthropometric landmarks and 15 dimensions was selected for the design. The faces of three members of the research team were scanned using a 3dMD digital scanning system. From these scans, algorithms were developed to create digital representations of the contours of the RPD frame.