Influence of visual clutter on the effect of navigated safety inspection: a case study on elevator installation

Abstract

The effect of a strengthened working memory on the detection rate through increased search efficiency is more apparent in high visual clutter. This study confirms the role of visual clutter in construction-navigated inspections, thus serving as a foundation for the optimization of inspection planning.

A Systematic Review of Eye-Tracking Studies of Construction Safety

“…It should be noted that eight studies (accounting for 36%) excluded some participants, and the average rejection rate is about 22%. Invalid participants are rejected for a variety of reasons such as unacceptable levels of calibration on the eye tracker ( Hasanzadeh et al, 2017a , b , 2018 ; Hasanzadeh et al, 2019 ), univariate outliers ( Hasanzadeh et al, 2017a ), interruptions during eye-tracking experiments ( Hasanzadeh et al, 2017a ), abnormal or incorrectible-to-normal vision ( Park et al, 2022 ), failures in pre-experiments ( Liao et al, 2019 ; Sun et al, 2020 ), and uncooperative participants ( Cheng et al, 2021 ; Park et al, 2022 ). This indicates that to ensure the sufficient experiment size of participants, the researchers should recruit more participants as appropriate.…”

“…However, Jeelani et al (2019) indicated that participants with better recognition performance spent more time on each hazard. Liao et al (2019) believed that there is no clear correlation between hazard recognition accuracy and fixation time. Conclusions from these studies are different and even conflicting.…”

Efficiency improvement by navigated safety inspection involving visual clutter based on the random search model

“…Navigated inspection offers search templates of hazards in the inspector's working memory by looking through a checklist before inspection, serving as a top-down guidance for selective attention [28,29]. The guidance from the working memory can quickly focus selective attention on relevant targets rather than background images [30,31].…”

“…Yet, there is another guidance mechanism, which relates to looking at the outstanding features of targets, which can be identified from differences in luminance, color, motion, orientation, or size between items [32,33]. It was shown that a contrast in at least one dimension between an object and its background can capture an observer's attention [29]. The search ability is affected by both top-down and bottom-up patterns [34].…”

“…Although the effect of VC on search capacity is relatively unambiguous, the moderation effect of VC on the relationship between working memory and search efficiency has not been sufficiently explored. VC could be a potential classifier for navigated inspection for classifying risk items and for shortening the risk checklist [29].…”