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Author
Santiago Segui; Michal Drozdzal; Ekaterina Zaytseva; Fernando Azpiroz; Petia Radeva; Jordi Vitria
Title
Detection of wrinkle frames in endoluminal videos using betweenness centrality measures for images
Type
Journal Article
Year
2014
Publication
IEEE Transactions on Information Technology in Biomedicine
Abbreviated Journal
TITB
Volume
18
Issue
6
Pages
1831-1838
Keywords
Wireless Capsule Endoscopy; Small Bowel Motility Dysfunction; Contraction Detection; Structured Prediction; Betweenness Centrality
Abstract
Intestinal contractions are one of the most important events to diagnose motility pathologies of the small intestine. When visualized by wireless capsule endoscopy (WCE), the sequence of frames that represents a contraction is characterized by a clear wrinkle structure in the central frames that corresponds to the folding of the intestinal wall. In this paper we present a new method to robustly detect wrinkle frames in full WCE videos by using a new mid-level image descriptor that is based on a centrality measure proposed for graphs. We present an extended validation, carried out in a very large database, that shows that the proposed method achieves state of the art performance for this task.
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OR; MILAB; 600.046;MV
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no
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Admin @ si @ SDZ2014
Serial
2385
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