Discrimination of orientation-defined texture edges

S. Sabina Wolfson, Michael S. Landy

Research output: Contribution to journalArticle

Abstract

Preattentive texture segregation was examined using textures composed of randomly placed, oriented line segments. A difference in texture element orientation produced an illusory, or orientation-defined, texture edge. Subjects discriminated between two textures, one with a straight texture edge and one with a "wavy" texture edge. Across conditions the orientation of the texture elements and the orientation of the texture edge varied. Although the orientation difference across the texture edge (the "texture gradient") is an important determinant of texture segregation performance, it is not the only one. Evidence from several experiments suggests that configural effects are also important. That is, orientation-defined texture edges are strongest when the texture elements (on one side of the edge) are parallel to the edge. This result is not consistent with a number of texture segregation models including feature- and filter-based models. One possible explanation is that the second-order channel used to detect a texture edge of a particular orientation gives greater weight to first-order input channels of that same orientation.

Original languageEnglish (US)
Pages (from-to)2863-2877
Number of pages15
JournalVision Research
Volume35
Issue number20
DOIs
StatePublished - 1995

Fingerprint

Weights and Measures

Keywords

  • Orientation
  • Texture

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Cite this

Discrimination of orientation-defined texture edges. / Wolfson, S. Sabina; Landy, Michael S.

In: Vision Research, Vol. 35, No. 20, 1995, p. 2863-2877.

Research output: Contribution to journalArticle

Wolfson, S. Sabina ; Landy, Michael S. / Discrimination of orientation-defined texture edges. In: Vision Research. 1995 ; Vol. 35, No. 20. pp. 2863-2877.
@article{6ec262a33cbf44a3b4b9eb32c4a3460e,
title = "Discrimination of orientation-defined texture edges",
abstract = "Preattentive texture segregation was examined using textures composed of randomly placed, oriented line segments. A difference in texture element orientation produced an illusory, or orientation-defined, texture edge. Subjects discriminated between two textures, one with a straight texture edge and one with a {"}wavy{"} texture edge. Across conditions the orientation of the texture elements and the orientation of the texture edge varied. Although the orientation difference across the texture edge (the {"}texture gradient{"}) is an important determinant of texture segregation performance, it is not the only one. Evidence from several experiments suggests that configural effects are also important. That is, orientation-defined texture edges are strongest when the texture elements (on one side of the edge) are parallel to the edge. This result is not consistent with a number of texture segregation models including feature- and filter-based models. One possible explanation is that the second-order channel used to detect a texture edge of a particular orientation gives greater weight to first-order input channels of that same orientation.",
keywords = "Orientation, Texture",
author = "Wolfson, {S. Sabina} and Landy, {Michael S.}",
year = "1995",
doi = "10.1016/0042-6989(94)00302-3",
language = "English (US)",
volume = "35",
pages = "2863--2877",
journal = "Vision Research",
issn = "0042-6989",
publisher = "Elsevier Limited",
number = "20",

}

TY - JOUR

T1 - Discrimination of orientation-defined texture edges

AU - Wolfson, S. Sabina

AU - Landy, Michael S.

PY - 1995

Y1 - 1995

N2 - Preattentive texture segregation was examined using textures composed of randomly placed, oriented line segments. A difference in texture element orientation produced an illusory, or orientation-defined, texture edge. Subjects discriminated between two textures, one with a straight texture edge and one with a "wavy" texture edge. Across conditions the orientation of the texture elements and the orientation of the texture edge varied. Although the orientation difference across the texture edge (the "texture gradient") is an important determinant of texture segregation performance, it is not the only one. Evidence from several experiments suggests that configural effects are also important. That is, orientation-defined texture edges are strongest when the texture elements (on one side of the edge) are parallel to the edge. This result is not consistent with a number of texture segregation models including feature- and filter-based models. One possible explanation is that the second-order channel used to detect a texture edge of a particular orientation gives greater weight to first-order input channels of that same orientation.

AB - Preattentive texture segregation was examined using textures composed of randomly placed, oriented line segments. A difference in texture element orientation produced an illusory, or orientation-defined, texture edge. Subjects discriminated between two textures, one with a straight texture edge and one with a "wavy" texture edge. Across conditions the orientation of the texture elements and the orientation of the texture edge varied. Although the orientation difference across the texture edge (the "texture gradient") is an important determinant of texture segregation performance, it is not the only one. Evidence from several experiments suggests that configural effects are also important. That is, orientation-defined texture edges are strongest when the texture elements (on one side of the edge) are parallel to the edge. This result is not consistent with a number of texture segregation models including feature- and filter-based models. One possible explanation is that the second-order channel used to detect a texture edge of a particular orientation gives greater weight to first-order input channels of that same orientation.

KW - Orientation

KW - Texture

UR - http://www.scopus.com/inward/record.url?scp=0029166547&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029166547&partnerID=8YFLogxK

U2 - 10.1016/0042-6989(94)00302-3

DO - 10.1016/0042-6989(94)00302-3

M3 - Article

C2 - 8533326

AN - SCOPUS:0029166547

VL - 35

SP - 2863

EP - 2877

JO - Vision Research

JF - Vision Research

SN - 0042-6989

IS - 20

ER -