Spatiotemporal visualization of the tongue surface using ultrasound and kriging

Vijay Parthasarathy; Maureen Stone; Jerry L. Prince

doi:10.1117/12.479724

30 May 2003 Spatiotemporal visualization of the tongue surface using ultrasound and kriging

Vijay Parthasarathy, Maureen Stone, Jerry L. Prince

Proceedings Volume 5029, Medical Imaging 2003: Visualization, Image-Guided Procedures, and Display; (2003) https://doi.org/10.1117/12.479724
Event: Medical Imaging 2003, 2003, San Diego, California, United States

Abstract

Analyzing the motion of the tongue surface provides valuable information about speech and swallowing. To analyze this motion, two-dimensional ultrasound images are acquired at video frame rates, and the tongue surface is automatically extracted and tracked. Further processing and statistical analysis of the extracted contours is made difficult by: 1) arbitrary spatial shifts and data loss resulting from ultrasound transducer positioning; 2) difference in tongue lengths over time for same utterance and across subjects; and 3) differences in the sampling locations. To address the above shortcombings, we used kriging to extrapolate and resample the tongue surface contours. Kriging was used becasue it does not lead to wild oscillations associated wiht traditional polynomial fitting. For our kriging implementation, we used the generalized covariance function and linear drift functions that are used in thin plate splines. Further, we designed a dedicated user interface called 'SURFACES' that exploits this extrapolation to visualize the contours as spatiotemporal surfaces. These spatiotemporal surfaces can be readily used for statistical comparison and visualization of tongue shapes for different utterances and swallows.

Citation Download Citation

Vijay Parthasarathy, Maureen Stone, and Jerry L. Prince "Spatiotemporal visualization of the tongue surface using ultrasound and kriging", Proc. SPIE 5029, Medical Imaging 2003: Visualization, Image-Guided Procedures, and Display, (30 May 2003); https://doi.org/10.1117/12.479724

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