@inproceedings{8ec6d96add224c7d85655990269173a7,
title = "Visibility Map: A New Method in Evaluation Quality of Optical Colonoscopy",
abstract = "Optical colonoscopy is performed by insertion of a long flexible endoscope into the colon. Inspecting the whole colonic surface for abnormalities has been a main concern in estimating quality of a colonoscopy procedure. In this paper we aim to estimate areas that have not been inspected thoroughly as a quality metric by generating a visibility map of the colon surface. The colon was modeled as a cylinder. By estimating the camera motion parameters between each consecutive frame, circumferential bands from the cylinder of the colon surface were extracted. Registering these extracted band images from adjacent video frames provide a visibility map, which could reveal uncovered areas by clinicians from colonoscopy videos. The method was validated using a set of realistic videos generated using a colonoscopy simulator for which the ground truth was known, and by analyzing results from processing actual colonoscopy videos by a clinical expert. Our method was able to identify 100% of uncovered areas on simulated data and achieved with sensitivity of 96% and precision of 74% on real videos. The results suggest that visibility map can increase clinicians{\textquoteright} awareness of uncovered areas, and would reduce the chance of missed polyps",
keywords = "optical-colonoscopy, visibility-map, uncovered-area, Colonoscopy Quality, Optical colonoscopy, Uncovered area, Camera motion parameters, Visibility map",
author = "Ali ARMIN and {De Visser}, Hans and Girija CHETTY and Cedric Dumas and David Conlan and Florian Grimpen and olivier salvado",
year = "2015",
doi = "10.1007/978-3-319-24553-9_49",
language = "English",
isbn = "9783319245522",
volume = "9349",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer",
pages = "396--404",
editor = "Nassir Navab and Joachim Hornegger and William Wells and Alejandro Frangi",
booktitle = "International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI 2015)",
address = "Netherlands",
note = "18th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2015, MICCAI 2015 ; Conference date: 05-10-2015 Through 09-10-2015",
}