Construction of collision avoidance behavior model induced by visual motion

We decide and execute our action from many types of environmental information in our daily lives even if we are not conscious of being guided. The human action induced from the oncoming person´s movement is the collision avoidance of passing each other. In collision avoidance, we chiefly judge the avoidance direction from visual information. Especially, it is important to get the information from oncoming person´s body part and avoidance timing in each other. Then, we make an experiment to judge the avoidance direction by watching the masking movie of oncoming person´s body part. By evaluating this judgment time, it was clarified oncoming person´s body part is leg in collision avoidance. Next, it especially paid attention to oncoming person´s leg, and the relation between the walking cycle and leg position in avoidance judgment is evaluated. From this result, the avoidance judgment is possible because the traveling direction can be controlled by the leg when the leg is lifting and landing. It was clarified that oncoming person´s walking cycle is important in the action decision during collision avoidance. So we propose the action decision model based at the walking cycle.