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Titolo:
OPTICAL SPECIFICATION OF TIME-TO-CONTACT FOR A SPECTATOR
Autore:
KIM NG; EFFKEN JA; CARELLO C;
Indirizzi:
UNIV CONNECTICUT,CTR ECOL STUDY PERCEPT & ACT,U-20,406 BABBIDGE RD STORRS CT 06269 UNIV ARIZONA,COLL NURSING TUCSON AZ 85721
Titolo Testata:
Ecological psychology
fascicolo: 2, volume: 10, anno: 1998,
pagine: 128 - 156
SICI:
1040-7413(1998)10:2<128:OSOTFA>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
VISUAL CONTROL; PERCEIVING AFFORDANCES; SCALED INFORMATION; TAU-HYPOTHESIS; PERCEPTION; BALL; ACCELERATION; COLLISION; VELOCITY; GUIDANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Citazione:
N.G. Kim et al., "OPTICAL SPECIFICATION OF TIME-TO-CONTACT FOR A SPECTATOR", Ecological psychology, 10(2), 1998, pp. 128-156

Abstract

In this article, we provide an account of the informational basis underlying judgments of time-to-contact (TTC) under the conditions examined in Kim, Effken, and Carello (1998), in which observers watched collisions between 2 objects from various vantage points, over varying collision paths, and with additional observer movement. First, we examinethe informational candidates proposed by Bootsma and his colleagues (e.g., Bootsma & Oudejans, 1993) and by Tresilian (1990). Simulation results showed that these models do not: accurately describe TTC for such varying conditions. We present an alternative model, emphasizing theadvantages of body scaling. Our model applied this scaling to the vertical gap between edges of the opposing surfaces of each object. Because all model terms are expressed in eyeheight units, distortions that occurred in the other models due to polar projection are eliminated. The proposed model provided veridical estimates of TTC for straight-line collision cases over a variety of viewing angles and with the addition of observer movement, but not for collisions along circular paths, in which the model only approximated TTC values.

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Documento generato il 21/09/20 alle ore 15:15:57