Memorias de investigación
Ponencias en congresos:
A new approach for the glotis segmentation using Snakes
Año:2013
Áreas de investigación
  • Tecnología electrónica y de las comunicaciones
Datos
Descripción
The present work describes a new methodology for the automatic detection of the glottal space from laryngeal images based on active contour models (snakes). In order to obtain an appropriate image for the use of snakes based techniques, the proposed algorithm combines a pre-processing stage including some traditional techniques (thresholding and median filter) with more sophisticated ones such as anisotropic filtering. The value selected for the thresholding was fixed to the 85% of the maximum peak of the image histogram, and the anisotropic filter permits to distinguish two intensity levels, one corresponding to the background and the other one to the foreground (glottis). The initialization carried out is based on the magnitude obtained using the Gradient Vector Flow field, ensuring an automatic process for the selection of the initial contour. The performance of the algorithm is tested using the Pratt coefficient and compared against a manual segmentation. The results obtained suggest that this method provided results comparable with other techniques such as the proposed in (Osma-Ruiz et al., 2008).
Internacional
Si
Nombre congreso
BIOSIGNALS 2013
Tipo de participación
960
Lugar del congreso
Portugal
Revisores
Si
ISBN o ISSN
978-989-8565-36-5
DOI
Fecha inicio congreso
11/02/2013
Fecha fin congreso
14/02/2013
Desde la página
318
Hasta la página
322
Título de las actas
Proceedings of BIOSIGNALS 2013
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Ingeniería de Circuitos y Sistemas