@InProceedings{JorgeBernal2014,
author="Jorge Bernal
and Fernando Vilari{\~n}o
and F. Javier Sanchez
and M. Arnold
and Anarta Ghosh
and Gerard Lacey",
title="Experts vs Novices: Applying Eye-tracking Methodologies in Colonoscopy Video Screening for Polyp Search",
booktitle="2014 Symposium on Eye Tracking Research and Applications",
year="2014",
pages="223--226",
abstract="We present in this paper a novel study aiming at identifying the differences in visual search patterns between physicians of diverse levels of expertise during the screening of colonoscopy videos. Physicians were clustered into two groups -experts and novices- according to the number of procedures performed, and fixations were captured by an eye-tracker device during the task of polyp search in different video sequences. These fixations were integrated into heat maps, one for each cluster. The obtained maps were validated over a ground truth consisting of a mask of the polyp, and the comparison between experts and novices was performed by using metrics such as reaction time, dwelling time and energy concentration ratio. Experimental results show a statistically significant difference between experts and novices, and the obtained maps show to be a useful tool for the characterisation of the behaviour of each group.",
optnote="MV; 600.047; 600.060;SIAI",
optnote="exported from refbase (http://refbase.cvc.uab.es/show.php?record=2448), last updated on Thu, 10 Nov 2016 11:50:06 +0100",
isbn="978-1-4503-2751-0",
doi="10.1145/2578153.2578189",
file=":http://refbase.cvc.uab.es/files/BVS2014.pdf:PDF"
}