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Planar, convex, aspheric or plainly vexing?| old_uid | 3651 |
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| title | Planar, convex, aspheric or plainly vexing? |
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| start_date | 2007/12/10 |
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| schedule | 16h-18h |
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| online | no |
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| summary | We know that people have conceptual and perceptual problems with planar mirrors.
On top of this, convex rear view mirrors increasingly replace planar mirrors in automobiles.
While increasing the field of view, convex mirrors are also taken to increase
distance estimates and thereby reduce safety margins. However, this study
failed to replicate systematic distance estimation errors in a real world setting.
Whereas distance estimates were accurate on average, convex mirrors lead to
significantly more variance in distance and spacing estimations. A second
experiment explored the effect of mirrors on time-to-contact estimations,
which had not been previously researched. Potential effects of display size
were separated from effects caused by distortion in convex mirrors. Time-tocontact
estimations without a mirror were most accurate. However, not
distortion, but visual angle seemed to cause estimation biases. Evaluating
advantages and disadvantages of convex mirrors is far more complex than
expected so far. |
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| responsibles | Amorin, Benguigui |
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