Abstract
Scanning behavior was investigated in a target acquisition task using video-taped forward looking infrared (FLIR) imagery. Comparisons in both target acquisition performance and scan patterns were made between trained FLIR operators and college students with no prior exposure to FLIR. For both groups the sequence of fixations and the distribution of fixation densities were different for each scene and dependent on its specific content. Subjects appeared to systematically explore areas within a scene in terms of some estimate of the probability of a target being present. The eye data may reflect group differences of two types. First, the priorities assigned by each group to various areas were apparently different and secondly, the FLIR operators apparently were able to make a “target, no target” decision more quickly at each fixation as reflected in the typically shorter fixation times.
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