Detection of animals in natural images using far peripheral vision

Simon J. Thorpe, Karl R. Gegenfurtner, Michèle Fabre-Thorpe, Heinrich Bulthoff

Research output: Contribution to journalArticle

128 Citations (Scopus)

Abstract

It is generally believed that the acuity of the peripheral visual field is too poor to allow accurate object recognition and, that to be identified, most objects need to be brought into foveal vision by using saccadic eye movements. However, most measures of form vision in the periphery have been done at eccentricities below 10° and have used relatively artificial stimuli such as letters, digits and compound Gabor patterns. Little is known about how such data would apply in the case of more naturalistic stimuli. Here humans were required to categorize briefly flashed (28 ms) unmasked photographs of natural scenes (39° high, and 26° across) on the basis of whether or not they contained an animal. The photographs appeared randomly in nine locations across virtually the entire extent of the horizontal visual field. Accuracy was 93.3% for central vision and decreased almost linearly with increasing eccentricity (89.8% at 13°, 76.1% at 44.5° and 71.2% at 57.5°). Even at the most extreme eccentricity, where the images were centred at 70.5°, subjects scored 60.5% correct. No evidence was found for hemispheric specialization. This level of performance was achieved despite the fact that the position of the image was unpredictable, ruling out the use of precued attention to target locations. The results demonstrate that even high-level visual tasks involving object vision can be performed using the relatively coarse information provided by the peripheral retina.

Original languageEnglish
Pages (from-to)869-876
Number of pages8
JournalEuropean Journal of Neuroscience
Volume14
Issue number5
DOIs
Publication statusPublished - 2002 Nov 20
Externally publishedYes

Fingerprint

Visual Fields
Cerebral Dominance
Saccades
Retina
Recognition (Psychology)

Keywords

  • Human performance
  • Large eccentricities
  • Natural images
  • Object vision
  • Peripheral vision

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Detection of animals in natural images using far peripheral vision. / Thorpe, Simon J.; Gegenfurtner, Karl R.; Fabre-Thorpe, Michèle; Bulthoff, Heinrich.

In: European Journal of Neuroscience, Vol. 14, No. 5, 20.11.2002, p. 869-876.

Research output: Contribution to journalArticle

Thorpe, Simon J. ; Gegenfurtner, Karl R. ; Fabre-Thorpe, Michèle ; Bulthoff, Heinrich. / Detection of animals in natural images using far peripheral vision. In: European Journal of Neuroscience. 2002 ; Vol. 14, No. 5. pp. 869-876.
@article{40c936feef524701ac79bee357c73117,
title = "Detection of animals in natural images using far peripheral vision",
abstract = "It is generally believed that the acuity of the peripheral visual field is too poor to allow accurate object recognition and, that to be identified, most objects need to be brought into foveal vision by using saccadic eye movements. However, most measures of form vision in the periphery have been done at eccentricities below 10° and have used relatively artificial stimuli such as letters, digits and compound Gabor patterns. Little is known about how such data would apply in the case of more naturalistic stimuli. Here humans were required to categorize briefly flashed (28 ms) unmasked photographs of natural scenes (39° high, and 26° across) on the basis of whether or not they contained an animal. The photographs appeared randomly in nine locations across virtually the entire extent of the horizontal visual field. Accuracy was 93.3{\%} for central vision and decreased almost linearly with increasing eccentricity (89.8{\%} at 13°, 76.1{\%} at 44.5° and 71.2{\%} at 57.5°). Even at the most extreme eccentricity, where the images were centred at 70.5°, subjects scored 60.5{\%} correct. No evidence was found for hemispheric specialization. This level of performance was achieved despite the fact that the position of the image was unpredictable, ruling out the use of precued attention to target locations. The results demonstrate that even high-level visual tasks involving object vision can be performed using the relatively coarse information provided by the peripheral retina.",
keywords = "Human performance, Large eccentricities, Natural images, Object vision, Peripheral vision",
author = "Thorpe, {Simon J.} and Gegenfurtner, {Karl R.} and Mich{\`e}le Fabre-Thorpe and Heinrich Bulthoff",
year = "2002",
month = "11",
day = "20",
doi = "10.1046/j.0953-816X.2001.01717.x",
language = "English",
volume = "14",
pages = "869--876",
journal = "European Journal of Neuroscience",
issn = "0953-816X",
publisher = "Wiley-Blackwell",
number = "5",

}

TY - JOUR

T1 - Detection of animals in natural images using far peripheral vision

AU - Thorpe, Simon J.

AU - Gegenfurtner, Karl R.

AU - Fabre-Thorpe, Michèle

AU - Bulthoff, Heinrich

PY - 2002/11/20

Y1 - 2002/11/20

N2 - It is generally believed that the acuity of the peripheral visual field is too poor to allow accurate object recognition and, that to be identified, most objects need to be brought into foveal vision by using saccadic eye movements. However, most measures of form vision in the periphery have been done at eccentricities below 10° and have used relatively artificial stimuli such as letters, digits and compound Gabor patterns. Little is known about how such data would apply in the case of more naturalistic stimuli. Here humans were required to categorize briefly flashed (28 ms) unmasked photographs of natural scenes (39° high, and 26° across) on the basis of whether or not they contained an animal. The photographs appeared randomly in nine locations across virtually the entire extent of the horizontal visual field. Accuracy was 93.3% for central vision and decreased almost linearly with increasing eccentricity (89.8% at 13°, 76.1% at 44.5° and 71.2% at 57.5°). Even at the most extreme eccentricity, where the images were centred at 70.5°, subjects scored 60.5% correct. No evidence was found for hemispheric specialization. This level of performance was achieved despite the fact that the position of the image was unpredictable, ruling out the use of precued attention to target locations. The results demonstrate that even high-level visual tasks involving object vision can be performed using the relatively coarse information provided by the peripheral retina.

AB - It is generally believed that the acuity of the peripheral visual field is too poor to allow accurate object recognition and, that to be identified, most objects need to be brought into foveal vision by using saccadic eye movements. However, most measures of form vision in the periphery have been done at eccentricities below 10° and have used relatively artificial stimuli such as letters, digits and compound Gabor patterns. Little is known about how such data would apply in the case of more naturalistic stimuli. Here humans were required to categorize briefly flashed (28 ms) unmasked photographs of natural scenes (39° high, and 26° across) on the basis of whether or not they contained an animal. The photographs appeared randomly in nine locations across virtually the entire extent of the horizontal visual field. Accuracy was 93.3% for central vision and decreased almost linearly with increasing eccentricity (89.8% at 13°, 76.1% at 44.5° and 71.2% at 57.5°). Even at the most extreme eccentricity, where the images were centred at 70.5°, subjects scored 60.5% correct. No evidence was found for hemispheric specialization. This level of performance was achieved despite the fact that the position of the image was unpredictable, ruling out the use of precued attention to target locations. The results demonstrate that even high-level visual tasks involving object vision can be performed using the relatively coarse information provided by the peripheral retina.

KW - Human performance

KW - Large eccentricities

KW - Natural images

KW - Object vision

KW - Peripheral vision

UR - http://www.scopus.com/inward/record.url?scp=0036421416&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036421416&partnerID=8YFLogxK

U2 - 10.1046/j.0953-816X.2001.01717.x

DO - 10.1046/j.0953-816X.2001.01717.x

M3 - Article

C2 - 11576191

AN - SCOPUS:0036421416

VL - 14

SP - 869

EP - 876

JO - European Journal of Neuroscience

JF - European Journal of Neuroscience

SN - 0953-816X

IS - 5

ER -