Computer-Assisted Segmentation of Videocapsule Images Using Alpha-Divergence-Based Active Contour In The Framework of Intestinal Pathologies Detection - Archive ouverte HAL Access content directly
Journal Articles International Journal of Biomedical Imaging Year : 2014

Computer-Assisted Segmentation of Videocapsule Images Using Alpha-Divergence-Based Active Contour In The Framework of Intestinal Pathologies Detection

Leila Meziou
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ICI
Olivier Romain
Xavier Dray
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  • PersonId : 934208
Bertrand Granado

Abstract

Visualization of the entire length of the gastrointestinal tract through natural orifices is a challenge for endoscopists. Videoendoscopy is currently the "gold standard" technique for diagnosis of different pathologies of the intestinal tract. Wireless Capsule Endoscopy (WCE) has been developed in the 1990's as an alternative to videoendoscopy to allow direct examination of the gastrointestinal tract without any need for sedation. Nevertheless, the systematic post-examination by the specialist of the 50,000 (for the small bowel) to 150,000 images (for the colon) of a complete acquisition using WCE remains time-consuming and challenging due to the poor quality of WCE images. In this article, a semiautomatic segmentation for analysis of WCE images is proposed. Based on active contour segmentation, the proposed method introduces alpha-divergences, a flexible statistical similarity measure that gives a real flexibility to different types of gastrointestinal pathologies. Results of segmentation using the proposed approach are shown on different types of real-case examinations, from (multi-) polyp(s) segmentation, to radiation enteritis delineation.
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Dates and versions

hal-01090142 , version 1 (03-12-2014)

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Leila Meziou, Aymeric Histace, Frédéric Precioso, Olivier Romain, Xavier Dray, et al.. Computer-Assisted Segmentation of Videocapsule Images Using Alpha-Divergence-Based Active Contour In The Framework of Intestinal Pathologies Detection. International Journal of Biomedical Imaging, 2014, 2014, 428583 (10 p.). ⟨10.1155/2014/428583⟩. ⟨hal-01090142⟩
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