research-article

Experts vs. novices: applying eye-tracking methodologies in colonoscopy video screening for polyp search

Authors:

F. Javier Sánchez,

Fernando Vilariño,

Gerard LaceyAuthors Info & Claims

ETRA '14: Proceedings of the Symposium on Eye Tracking Research and Applications

Pages 347 - 350

https://doi.org/10.1145/2578153.2628811

Published: 26 March 2014 Publication History

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.

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References

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Barton, R. 2008. Accrediting competence in colonoscopy: validity and reliability of the uk joint advisory group/nhs bowel cancer screening programme accreditation assessment. Gastrointestinal Endoscopy 67, 5, AB77--AB77.

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Bernal, J., Sánchez, J., and Vilariño, F. 2012. Towards automatic polyp detection with a polyp appearance model. Pattern Recognition 45, 9, 3166--3182.

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Cited By

Amir OUtterback KLee JLee KKwon SCarroll DPapoutsaki A(2022)The elephant in the room: attention to salient scene features increases with comedic expertiseCognitive Processing10.1007/s10339-022-01079-023:2(203-215)Online publication date: 10-Mar-2022
https://doi.org/10.1007/s10339-022-01079-0

Index Terms

Experts vs. novices: applying eye-tracking methodologies in colonoscopy video screening for polyp search
1. Computing methodologies
  1. Artificial intelligence
    1. Computer vision
      1. Computer vision problems
        Tracking
      2. Computer vision tasks
        Scene understanding

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cover image ACM Conferences

ETRA '14: Proceedings of the Symposium on Eye Tracking Research and Applications

March 2014

394 pages

ISBN:9781450327510

DOI:10.1145/2578153

Conference Chairs:
Pernilla Qvarfordt
FX Palo Alto Laboratory
,
Dan Witzner Hansen
IT University, Denmark

Copyright © 2014 ACM.

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Published: 26 March 2014

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Spanish Government

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ETRA '14: Eye Tracking Research and Applications

March 26 - 28, 2014

Florida, Safety Harbor

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Overall Acceptance Rate 69 of 137 submissions, 50%

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Cited By

Amir OUtterback KLee JLee KKwon SCarroll DPapoutsaki A(2022)The elephant in the room: attention to salient scene features increases with comedic expertiseCognitive Processing10.1007/s10339-022-01079-023:2(203-215)Online publication date: 10-Mar-2022
https://doi.org/10.1007/s10339-022-01079-0

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