J. Scheirer, Raul Fernandez, Rosalind W. Picard

Abstract

Expression Glasses provide a wearable
appliancebased alternative to general purpose machine vision face recognition sys tems The glasses sense facial muscle move ments and use pattern recognition to iden tify meaningful expressions such as confusion or interest A prototype of the glasses has been built and evaluated The prototype uses piezoelectric sensors hidden in a visor exten sion to a pair of glasses providing for com pactness user control and anonymity On users who received no training or feedback the glasses initially performed at  accu racy in detecting an expression and at  accuracy in recognizing whether the expres sion was confusion or interest Signi cant im provement beyond these numbers appears to be possible with extended use and with a small amount of feedback letting the user see the output of the system  Keywords Aective wearables aective computing user interface humancomputer interaction facial expressions
Introduc