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Author
Debora Gil; F. Javier Sanchez; Gloria Fernandez Esparrach; Jorge Bernal
Title
3D Stable Spatio-temporal Polyp Localization in Colonoscopy Videos
Type
Book Chapter
Year
2015
Publication
Computer-Assisted and Robotic Endoscopy. Revised selected papers of Second International Workshop, CARE 2015, Held in Conjunction with MICCAI 2015
Abbreviated Journal
Volume
9515
Issue
Pages
140-152
Keywords
Colonoscopy, Polyp Detection, Polyp Localization, Region Extraction, Watersheds
Abstract
Computational intelligent systems could reduce polyp miss rate in colonoscopy for colon cancer diagnosis and, thus, increase the efficiency of the procedure. One of the main problems of existing polyp localization methods is a lack of spatio-temporal stability in their response. We propose to explore the response of a given polyp localization across temporal windows in order to select
those image regions presenting the highest stable spatio-temporal response.
Spatio-temporal stability is achieved by extracting 3D watershed regions on the
temporal window. Stability in localization response is statistically determined by analysis of the variance of the output of the localization method inside each 3D region. We have explored the benefits of considering spatio-temporal stability in two different tasks: polyp localization and polyp detection. Experimental results indicate an average improvement of 21:5% in polyp localization and 43:78% in polyp detection.
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CARE
Notes
IAM; MV; 600.075
Approved
no
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Admin @ si @ GSF2015
Serial
2733
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