Abstract
This study evaluates mobile crane operator’s gaze pattern to discriminate effects of skills and performance. Scalar variables define the degree of disorder and distribution of gaze fixations between discrete Area-of-Interests (AOI). A field experiment was carried out to measure gaze behavior of operators from two skill categories. Gaze fixations on discrete Area-of-Interests (AOIs) are analyzed using the first order Markov transition matrix. Matrix elements are mapped to scalar variables such as gaze entropy for statistical analysis. The conventional mapping method is revised to accommodate sparse transition matrix resulting from large number of AOIs. The results suggest the revised scalar variables can be interpreted like those for non-sparse transition matrices. More importantly, the findings suggest statistically significant correlations between operators’ gaze patterns and performance. Therefore, operator attention is well-defined by these variables which are promising for development of work support or guidance system to facilitate crane operation.
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Chew, J.Y., Ohtomi, K., Suzuki, H. (2021). Monitoring Attention of Crane Operators During Load Oscillations Using Gaze Entropy Measures. In: Stephanidis, C., et al. HCI International 2021 - Late Breaking Papers: Cognition, Inclusion, Learning, and Culture. HCII 2021. Lecture Notes in Computer Science(), vol 13096. Springer, Cham. https://doi.org/10.1007/978-3-030-90328-2_3
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