TY  - JOUR
PY  - 2017//
TI  - Relationship between a retinal image in a pedestrian's eye and linear motion of an approaching vehicle
JO  - Transactions of Society of Automotive Engineers of Japan
A1  - Yokoya, Yasushi
A1  - Soma, Hitoshi
A1  - Shimoyama, Osamu
SP  - 731
EP  - 737
VL  - 48
IS  - 3
N2  - A relation between velocity of a vehicle and its image on a retina of a pedestrian is described based on geometrical optics. Displacement of a vehicle position is decomposed into the tangential and the normal component according to the two-dimensional rotating-frame. The tangential component directly contributes to the perception by the retinal image, while the normal component indirectly contributes by changes in the visual angle through size constancy. It is shown how the magnitude of these two components depends on eye height of a pedestrian, frontal projected area and velocity of an approaching vehicle.<p />  <p>Language: ja</p>
LA  - ja
SN  - 0287-8321
UR  - http://dx.doi.org/10.11351/jsaeronbun.48.731
ID  - ref1
ER  -