期刊
VISUAL COGNITION
卷 17, 期 6-7, 页码 945-978出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/13506280902834720
关键词
Computational model; Contextual guidance; Eye movement; Real world scene; Saliency; Target feature; Visual search
资金
- NEI NIH HHS [T32 EY013935, T32 EY013935-01] Funding Source: Medline
- NATIONAL EYE INSTITUTE [T32EY013935] Funding Source: NIH RePORTER
How predictable are human eye movements during search in real world scenes? We recorded 14 observers' eye movements as they performed a search task (person detection) in 912 outdoor scenes. Observers were highly consistent in the regions fixated during search, even when the target was absent from the scene. These eye movements were used to evaluate computational models of search guidance from three sources: Saliency, target features, and scene context. Each of these models independently outperformed a cross-image control in predicting human fixations. Models that combined sources of guidance ultimately predicted 94% of human agreement, with the scene context component providing the most explanatory power. None of the models, however, could reach the precision and fidelity of an attentional map defined by human fixations. This work puts forth a benchmark for computational models of search in real world scenes. Further improvements in modelling should capture mechanisms underlying the selectivity of observers' fixations during search.
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