A Basic Study on Navigator's Visual Information and Processing-III : Depth Perception

Abstract

People get various data from the environment through five senses. So does a navigator when he navigates. Visual data are most important and indispensable among them. However it is authors' acknowledgement that a role of the visual information in the navigator's decision making process have not really recognized yet and consequently not analysed fully. And moreover when it comes to how, from what and for what a captain acquires his visual data, the research has hardly been done. This is the report on the dependency of the cues for depth perception on the visual acuity, the distance to the object and visual angle.