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• W1532642357 abstract "We investigated how size and depth are perceived in a plane or convex mirror. In Experiment 1, using a plane or convex mirror, 20 observers viewed a separation between two objects that were presented at a constant distance and reproduced it by a separation between other two objects in a natural viewing situation. The mean matches generally approximated the real size of the standard and did not equal either virtual size or visual angle of the standard. In addition, the mean matches obtained with convex mirrors were reduced by about 7% in comparison with those obtained with the plane mirror. In Experiment 2, we examined whether the perceived depth in a convex mirror is comparable to that in a plane mirror. We presented isosceles triangles on a table and required 12 observers to observe them with a plane or convex mirror. With the method of limits, we determined the triangle that was perceived as an equilateral triangle. When the apexes of isosceles triangles were directed to the observer or to depth, the ratio of height to base was larger in convex mirrors than in the plane mirror, whereas when the apexes were directed to left or to right, the ratio of height to base was smaller in the convex mirrors than in the plane mirror. The contraction of perceived depth amounted to about 6% in convex mirrors. The results of both experiments suggest that although separation and depth in convex mirrors appear to reduce, there is a strong tendency that visual system recovers the optical distortions by convex mirrors. This study investigated how size (or separation) and depth are perceived in a plane or convex mirror. In this paper, size means the extent of an object in the frontoparallel plane; in particular, when a vacant space spreads between two frontoparallel objects, we refer to the space as separation. Distance means the extent from the observer to an object and depth means the difference between two distances. We believe that size, distance, and depth are accurately perceived in natural viewing situations in which a number of spatial cues are provided in usual combination. In contrast, many problems remain to be" @default.
• W1532642357 created "2016-06-24" @default.
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• W1532642357 date "2005-01-01" @default.
• W1532642357 modified "2023-09-22" @default.
• W1532642357 title "Contraction of perceived size and perceived depth in mirrors" @default.
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