PT Chapter
AU Carles Sanchez
   F. Javier Sanchez
   Antoni Rosell
   Debora Gil
TI An illumination model of the trachea appearance in videobronchoscopy images
BT Image Analysis and Recognition
PY 2012
BP 313
EP 320
VL 7325
DI 10.1007/978-3-642-31298-4_37
DE Bronchoscopy; tracheal ring; stenosis assesment; trachea appearance model; segmentation
AB Videobronchoscopy is a medical imaging technique that allows interactive navigation inside the respiratory pathways. This imaging modality provides realistic images and allows non-invasive minimal intervention procedures. Tracheal procedures are routinary interventions that require assessment of the percentage of obstructed pathway for injury (stenosis) detection. Visual assessment in videobronchoscopic sequences requires high expertise of trachea anatomy and is prone to human error.This paper introduces an automatic method for the estimation of steneosed trachea percentage reduction in videobronchoscopic images. We look for tracheal rings , whose deformation determines the degree of obstruction. For ring extraction , we present a ring detector based on an illumination and appearance model. This model allows us to parametrise the ring detection. Finally, we can infer optimal estimation parameters for any video resolution.
ER