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Strategisch sensorgebruik

M.A. Hogervorst

出版	TNO, 2005
URL	http://books.google.com.hk/books?id=NFltMgAACAAJ&hl=&source=gbs_api

註釋

This study investigates human search with a limited Field of View (FOV). We determined which search strategies are used and how they affect search performance. Two experiments with human observers were performed in which the observers searched with a limited FOV for a target with a simulated visual or thermal sensor (on a PC). Time to detection and scan path were recorded. In the first experiment a (fixed) predefined scan path was used. In the second experiment a large number of military scouts searched freely (with a joystick) for the target. The main result is that search performance is strongly related to target conspicuity and this relationship is largely independent of the type of sensor (visual or thermal). The results further indicate that the observers are aware of their limitations and choose a (near) optimal search strategy. Based on these results we developed a human search model that predicts search performance for a given scan path. Our results further indicate that human search behaviour can be modelled by an optimal observer that takes into account the limitations of the visual system and expected target conspicuities.