Figure 18.

Airway segmentation under motion artifact on rabbit images without the breathing controlled mechanism. (a) and (d) Two rabbit images under motion artifacts and blurring with zoomed view shown in (b) and (e). (c) 3D rendering of a successful segmentation showing airway with surrounding consolidation in (a) and (b). (f) 3D rendering of a broken case where the airway structure is not fully extracted as pointed by the yellow arrow due to motion artifacts and blurring, in which case the appearances of airway (pointed by solid arrow) and nonairway (pointed by dashed arrow) are similar.