The perception of an opening from expanding motion

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The ability of humans to detect an opening's 3-D structure from expanding motion was tested. Computer simulations of dotted tunnels were used to generate optical flows typically encountered when one moves through an opening. Experiment 1 qualitatively tested the ability to detect the shape of a tunnel's vertical section. The observers could choose the correct shape for each of seven simulated shapes. The percentages of correct responses were much higher than those under static conditions. Experiment 2 tested whether or not one could quantitatively detect the vertical-horizontal proportion of the elliptic tunnels. The result shows quite high correlations (r = .93≈.97) between perceived proportions and simulated ones. The slopes of the regression lines were around 1.0. Experiment 3 investigated the necessary stimulus duration for detecting an opening's shape. Relative size (width and height) was significantly detected under four-frame (72.7-msec) conditions by 3 out of 4 subjects. The other subject performed well under eight-frame conditions. These results indicate that the human visual system can instantly detect the 3-D structure of an opening surrounded by objects from expanding optical flows while one is in forward motion.

Original languageEnglish
Pages (from-to)81-87
Number of pages7
JournalPerception and Psychophysics
Volume58
Issue number1
DOIs
Publication statusPublished - Jan 1996

Fingerprint

Aptitude
experiment
Computer Simulation
ability
computer simulation
stimulus
regression
Experiment
Proportion
Optical

All Science Journal Classification (ASJC) codes

  • Experimental and Cognitive Psychology
  • Sensory Systems
  • Psychology(all)

Cite this

The perception of an opening from expanding motion. / Ito, Hiroyuki.

In: Perception and Psychophysics, Vol. 58, No. 1, 01.1996, p. 81-87.

Research output: Contribution to journalArticle

@article{17d3a2e92a724ff184e849d7ef4dd40f,
title = "The perception of an opening from expanding motion",
abstract = "The ability of humans to detect an opening's 3-D structure from expanding motion was tested. Computer simulations of dotted tunnels were used to generate optical flows typically encountered when one moves through an opening. Experiment 1 qualitatively tested the ability to detect the shape of a tunnel's vertical section. The observers could choose the correct shape for each of seven simulated shapes. The percentages of correct responses were much higher than those under static conditions. Experiment 2 tested whether or not one could quantitatively detect the vertical-horizontal proportion of the elliptic tunnels. The result shows quite high correlations (r = .93≈.97) between perceived proportions and simulated ones. The slopes of the regression lines were around 1.0. Experiment 3 investigated the necessary stimulus duration for detecting an opening's shape. Relative size (width and height) was significantly detected under four-frame (72.7-msec) conditions by 3 out of 4 subjects. The other subject performed well under eight-frame conditions. These results indicate that the human visual system can instantly detect the 3-D structure of an opening surrounded by objects from expanding optical flows while one is in forward motion.",
author = "Hiroyuki Ito",
year = "1996",
month = "1",
doi = "10.3758/BF03205478",
language = "English",
volume = "58",
pages = "81--87",
journal = "Attention, Perception, and Psychophysics",
issn = "1943-3921",
publisher = "Springer New York",
number = "1",

}

TY - JOUR

T1 - The perception of an opening from expanding motion

AU - Ito, Hiroyuki

PY - 1996/1

Y1 - 1996/1

N2 - The ability of humans to detect an opening's 3-D structure from expanding motion was tested. Computer simulations of dotted tunnels were used to generate optical flows typically encountered when one moves through an opening. Experiment 1 qualitatively tested the ability to detect the shape of a tunnel's vertical section. The observers could choose the correct shape for each of seven simulated shapes. The percentages of correct responses were much higher than those under static conditions. Experiment 2 tested whether or not one could quantitatively detect the vertical-horizontal proportion of the elliptic tunnels. The result shows quite high correlations (r = .93≈.97) between perceived proportions and simulated ones. The slopes of the regression lines were around 1.0. Experiment 3 investigated the necessary stimulus duration for detecting an opening's shape. Relative size (width and height) was significantly detected under four-frame (72.7-msec) conditions by 3 out of 4 subjects. The other subject performed well under eight-frame conditions. These results indicate that the human visual system can instantly detect the 3-D structure of an opening surrounded by objects from expanding optical flows while one is in forward motion.

AB - The ability of humans to detect an opening's 3-D structure from expanding motion was tested. Computer simulations of dotted tunnels were used to generate optical flows typically encountered when one moves through an opening. Experiment 1 qualitatively tested the ability to detect the shape of a tunnel's vertical section. The observers could choose the correct shape for each of seven simulated shapes. The percentages of correct responses were much higher than those under static conditions. Experiment 2 tested whether or not one could quantitatively detect the vertical-horizontal proportion of the elliptic tunnels. The result shows quite high correlations (r = .93≈.97) between perceived proportions and simulated ones. The slopes of the regression lines were around 1.0. Experiment 3 investigated the necessary stimulus duration for detecting an opening's shape. Relative size (width and height) was significantly detected under four-frame (72.7-msec) conditions by 3 out of 4 subjects. The other subject performed well under eight-frame conditions. These results indicate that the human visual system can instantly detect the 3-D structure of an opening surrounded by objects from expanding optical flows while one is in forward motion.

UR - http://www.scopus.com/inward/record.url?scp=0029704304&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029704304&partnerID=8YFLogxK

U2 - 10.3758/BF03205478

DO - 10.3758/BF03205478

M3 - Article

C2 - 8668523

AN - SCOPUS:0029704304

VL - 58

SP - 81

EP - 87

JO - Attention, Perception, and Psychophysics

JF - Attention, Perception, and Psychophysics

SN - 1943-3921

IS - 1

ER -