Wireless capsule endoscopy and endoscopic imaging: a survey on various methodologies presented.

Wireless capsule endoscopy (WCE) is a recently established methodology that offers to medical doctors (gastroenterologists) the capability to examine the interior of the small intestine with a noninvasive procedure. Before the introduction of WCE, it was impossible for a physician to examine tissues of the small intestine without performing a surgical operation. Although WCE has the advantage of investigating the whole digestive system, the viewing and evaluation of each WCE video is a time-consuming process (2-3 h) for MD gastroenterologists. This makes the WCE methodology not widely efficient and acceptable by MDs.