Using a radial ultrasound probe's virtual origin to compute midsagittal smoothing splines in polar coordinates
| dc.contributor.author | Heyne, M. | |
| dc.contributor.author | Derrick, Donald | |
| dc.date.accessioned | 2016-03-30T22:13:15Z | |
| dc.date.available | 2016-03-30T22:13:15Z | |
| dc.date.issued | 2015 | en |
| dc.description.abstract | Tongue surface measurements from midsagittal ultrasound scans are effectively arcs with deviations representing tongue shape, but smoothing-spline analysis of variances (SSANOVAs) assume variance around a horizontal line. Therefore, calculating SSANOVA average curves of tongue traces in Cartesian Coordinates [Davidson, J. Acoust. Soc. Am. 120(1), 407–415 (2006)] creates errors that are compounded at tongue tip and root where average tongue shape deviates most from a horizontal line. This paper introduces a method for transforming data into polar coordinates similar to the technique by Mielke [J. Acoust. Soc. Am. 137(5), 2858–2869 (2015)], but using the virtual origin of a radial ultrasound transducer as the polar origin—allowing data conversion in a manner that is robust against between-subject and between-session variability. | en |
| dc.identifier.citation | Heyne, M., Derrick, D. (2015) Using a radial ultrasound probe's virtual origin to compute midsagittal smoothing splines in polar coordinates. The Journal of the Acoustical Society of America, 138(6), pp. EL509-EL514. | en |
| dc.identifier.doi | https://doi.org/10.1121/1.4937168 | |
| dc.identifier.uri | http://hdl.handle.net/10092/11947 | |
| dc.language.iso | en | |
| dc.publisher | University of Canterbury. New Zealand Institute of Language, Brain & Behaviour | en |
| dc.rights.uri | https://hdl.handle.net/10092/17651 | |
| dc.subject.anzsrc | Fields of Research::47 - Language, communication and culture::4704 - Linguistics::470410 - Phonetics and speech science | en |
| dc.title | Using a radial ultrasound probe's virtual origin to compute midsagittal smoothing splines in polar coordinates | en |
| dc.type | Journal Article |
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