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Impact of Visual Features on The Segmentation of Gastroenterology Images Using Normalized Cuts

Riaz, F. ; Silva, F. Baldaque Silva ; Dinis-Ribeiro, M. ; Coimbra, M.

IEEE Transactions on Biomedical Engineering Vol. 60, Nº 5, pp. 1191 - 1201, May, 2013.

ISSN (print): 0018-9294
ISSN (online): 1558-2531

Scimago Journal Ranking: 1,09 (in 2013)

Digital Object Identifier: 10.1109/TBME.2012.2230174

Gastroenterology imaging is an essential tool to detect gastrointestinal cancer in patients. Computer-assisted diagnosis is desirable to help us improve the reliability of this detection. However, traditional computer vision methodologies, mainly segmentation, do not translate well to the specific visual
characteristics of a gastroenterology imaging scenario. In this paper, we propose a novel method for the segmentation of gastroenterology images from two distinct imaging modalities and organs: chromoendoscopy (CH) and narrow-band imaging (NBI) from stomach and esophagus respectively. We have used various visual features individually and their combinations (edgemaps, creaseness and color) in normalized cuts image segmentation
framework to segment ground truth datasets of 142 CH and 224 NBI images. Experiments show that an integration of edgemaps and creaseness in normalized cuts gives the best segmentation performance resulting in high quality segmentations of the gastroenterology images.