@article{oai:kumadai.repo.nii.ac.jp:00022381,
 author = {Watanabe, Isao and Ryu, Ou and 渡辺, 功 and 劉, 欧},
 journal = {文学部論叢},
 month = {Mar},
 note = {application/pdf, 論文(Article), Two experiments were designed to examine how the shape and the location of an oval shadow attached to a circle affect the 3D perception. Ten undergraduates rated the circle with the shadow according to the position fitness as its cast shadow, and also 3D located downward the circle in Experiment 1, and rightward or lower-rightward in Experiment 2. Experiment 1 showed that the ratings were high for the thin shadow when it was located apart from the circle and low when overlapped, while the ratings were low for the thick shadow irrespective of the location. Experiment 2 showed that the ratings changed depending on relation of the shape and the location, when the shadow was located lower-rightward the circle. The ratings were equally low irrespective of the shape and the location when the shadow was located rightward the circle. The results were compatible with the hypothesis "Assumption of light from above".},
 pages = {1--13},
 title = {見えの立体感に及ぼす陰影の形と位置の効果},
 volume = {100},
 year = {2009}
}