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Detection and correction of specular reflections in thoracoscopic images

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9 pages
Niveau: Supérieur
Charles-Auguste Saint-Pierre, ing. jr. Detection and correction of specular reflections in thoracoscopic images By : Charles St-Pierre Supervisor : Farida Cheriet, Ph.D. Co-supervisor : Guy Grimard, MD 2005-09-13 Ecole Polytechnique de Montreal, Canada

  • augmented reality

  • automatic extraction

  • specular lobe

  • intensity histograms

  • minimally-invasive surgery

  • charles st

  • specific goals


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Detection and correction of specular reflections in thoracoscopic images
By : Charles StPierre Supervisor : Farida Cheriet, Ph.D. Cosupervisor : Guy Grimard, MD 20050913
Ecole Polytechnique de Montreal, Canada CharlesAuguste SaintPierre, ing. jr.
Minimallyinvasive surgery
CharlesAuguste SaintPierre, ing. jr.
Augmented reality
CharlesAuguste SaintPierre, ing. jr.
The problem
Automatic segmentation results of Boisvert
CharlesAuguste SaintPierre, ing. jr.
Goals
Main goal :  Automatic detection and correction of the specular reflections. Specific goals :
 Enhance the specular reflections.  Denoise the intensity histograms.  Automatic detection of the specular bump.  Automatic extraction of the specular lobe.  Automatic filling of the hole in the specular mask.
CharlesAuguste SaintPierre, ing. jr.
Results
Color image
Corrected image
Detected reflections
CharlesAuguste SaintPierre, ing. jr.
Results
Color image
Detected reflections
Corrected image CharlesAuguste SaintPierre, ing. jr.
Discussion and conclusion
Conclusive results for the specular spike detection. Robust in presence of fat tissues. Realtime detection of the specular reflections. New technique for the detection and the correction of specular reflection in thoracoscopic images has been validated on real images. New algorithm for the specular reflection enhancement. New algorithm for specular reflection detection. Elaboration of a dynamic threshold for the intensity descent.
CharlesAuguste SaintPierre, ing. jr.
Questions
CharlesAuguste SaintPierre, ing. jr.
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