This story is part of our new series Mask Envy, where we showcase San Franciscans’ creativity and take a look at some of the coolest masks spotted around the city. Have a look you want to submit?

As COVID-19 cases are unfortunately on the rise yet again, it’s as important as it has ever been to be sure you’re wearing a face mask when you’re in a public setting or when you’re around other ...

Fig. 1. Given (a) the scanned face model of a subject, we develop an optimization-based approach to design (b&c) a PAP mask cushion that fits the face model. (d) The designed mask cushion is ...