Abstract
A method of rapid semi-automatic segmentation of real-time magnetic resonance image data for parametric analysis of vocal tract shaping is described. Tissue boundaries are identified by seeking pixel intensity thresholds along tract-normal grid-lines. Airway contours are constrained with respect to a tract centerline defined as an optimal path over the graph of all intensity minima between the glottis and lips. The method allows for superimposition of reference boundaries to guide automatic segmentation of anatomical features which are poorly imaged using magnetic resonance - dentition and the hard palate - resulting in more accurate sagittal sections than those produced by fully automatic segmentation. We demonstrate the utility of the technique in the dynamic analysis of tongue shaping in Tamil liquid consonants.
| Original language | English |
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| Title of host publication | Proceedings of the 11th Annual Conference of the International Speech Communication Association, INTERSPEECH 2010 |
| Place of Publication | Baixas, France |
| Publisher | International Speech Communication Association |
| Pages | 1576-1579 |
| Number of pages | 4 |
| ISBN (Print) | 9781617821233 |
| Publication status | Published - 2010 |
| Externally published | Yes |
| Event | 11th Annual Conference of the International-Speech-Communication-Association 2010 - Makuhari, Japan Duration: 26 Sept 2010 → 30 Sept 2010 |
Conference
| Conference | 11th Annual Conference of the International-Speech-Communication-Association 2010 |
|---|---|
| Country/Territory | Japan |
| City | Makuhari |
| Period | 26/09/10 → 30/09/10 |
Keywords
- speech production
- vocal tract segmentation
- MRI
- tongue shaping
- articulatory analysis