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Automatic polyp detection in pillcam colon 2 capsule images and videos: prelimi...
Figueiredo, P; Figueiredo, IN; Prasath, S; Tsai, RBackground. The aim of this work is to present an automatic colorectal polyp detection scheme for capsule endoscopy. Methods. PillCam COLON2 capsule-based images and videos were used in our study. The database consists of full exam videos from five patients. The algorithm is based on the assumption that the polyps show up as a protrusion in the captured images and is expressed by means of a P-value, defined by ...
A coupled convection-diffusion level set model for tracking epithelial cells in...
Figueiredo, IN; Leal, C; Leonori, T; Romanazzi, G; Figueiredo, P; Donato, MMColorectal cancer is initiated in colonic crypts as a consequence of alterations leading to the disruption of the normal colonic cellular process. We propose a model, which couples a convection-diffusion type equation with a level set equation, for tracking the time evolution of an epithelial cell set, inside a colonic crypt, until it reaches the top of the crypt. The convection-diffusion equation describes the...
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