Automatic glottal segmentation using local-based active contours and application to glottovibrography

作者：Karakozoglou Sevasti Zoi^*; Henrich Nathalie; d' Alessandro Christophe; Stylianou Yannis

来源：Speech Communication, 2012, 54(5): 641-654.

DOI：10.1016/j.specom.2011.07.010

• High-speed videoendoscopy
• Vocal-fold vibration
• Active contours
• Representation
• Glottovibrogram
• Electroglottography

The use of high-speed videoendoscopy (HSV) for the assessment of vocal-fold vibrations dictates the development of efficient techniques for glottal image segmentation. We present a new glottal segmentation method using a local-based active contour framework. The use of local-based features and the exploitation of the vibratory pattern allows for dealing effectively with image noise and cases where the glottal area consists of multiple regions. A scheme for precise glottis localization is introduced, which facilitates the segmentation procedure. The method has been tested on a database of 60 HSV recordings. Comparisons with manual verification resulted in less than 1% difference on the average glottal area. These errors mainly come from detection failure in the posterior or anterior parts of the glottal area. Comparisons with automatic threshold-based glottal detection point out the necessity of complete frameworks for automatic detection. The glottovibrogram (GVG), a representation of glottal vibration is also presented. This easily readable representation depicts the time-varying distance of the vocal-fold edges.

• 出版日期2012-6