Detection and correction of specular reflections in thoracoscopic images

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Charles - Auguste Saint - Pierre

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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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Publié par

profil-nechor-2012

Nombre de lectures

Langue

English

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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