Saliency-Based Bleeding Localization for Wireless Capsule Endoscopy Diagnosis

Abstract EN

Stomach bleeding is a kind of gastrointestinal disease which can be diagnosed noninvasively by wireless capsule endoscopy (WCE).

However, it requires much time for physicians to scan large amount of WCE images.

Alternatively, computer-assisted bleeding localization systems are developed where color, edge, and intensity features are defined to distinguish lesions from normal tissues.

This paper proposes a saliency-based localization system where three saliency maps are computed: phase congruency-based edge saliency map derived from Log-Gabor filter bands, intensity histogram-guided intensity saliency map, and red proportion-based saliency map.

Fusing the three maps together, the proposed system can detect bleeding regions by thresholding the fused saliency map.

Results demonstrate the accuracy of 98.97% for our system to mark bleeding regions.