Super-imposing maxillary and palatal locations for electroarticulometry: A SIMPLE method

摘要

This study proposes a method of superimposing a physicalpalatal profile, extracted from a speaker’s maxillary impression, ontoreal-time mid-sagittal articulatory data. A palatal/dental profile is firstobtained by three-dimensional–scanning the maxillary impression ofthe speaker. Then a high resolution mid-sagittal palatal line, extractedfrom the profile, is sub-divided into articulatory zones and superimposed,by Iterative Closest Point algorithm, onto reconstructed palataltraces in electromagnetic articulometric (EMA) data. Evaluations werecarried out by comparing consonant targets elicited by EMA with theproposed method and by static palatography. The proposed methodyields accurate results, as supported by palatography.