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Predicting Tongue Shapes from a Few Landmark Locations

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Original languageEnglish
Title of host publicationIn Proc. Interspeech 2008
Pages2306-2309
Publication statusPublished - Sep 2008

Abstract

We present a method for predicting the midsagittal tongue contour from the locations of a few landmarks (metal pellets) on the tongue surface, as used in articulatory databases such as MOCHA and the Wisconsin XRDB. Our method learns a mapping using ground-truth tongue contours derived from ultrasound data and drastically improves over spline interpolation. We also determine the optimal locations of the landmarks, and the number of landmarks required to achieve a desired prediction error: 3-4 landmarks are enough to achieve 0.3-0.2 mm error per point on the tongue.

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