In machine lip-reading, which is identification of speech from
visual-only information, there is evidence to show that visual
speech is highly dependent upon the speaker [1]. Here, we use
a phoneme-clustering method to form new phoneme-to-viseme
maps for both individual and multiple speakers. We use these
maps to examine how similarly speakers talk visually. We conclude
that broadly speaking, speakers have the same repertoire
of mouth gestures, where they differ is in the use of the gestures