Strength of feature contrast mediates interaction among feature domains

Strength of feature contrast mediates interaction among feature domains Spatial Vision , Vol. 16, No. 5, pp. 459– 478 (2003) Ó VSP 2003. Also available online - www.vsppub.com Strength of feature contrast mediates interaction among feature domains GÜNTER MEINHARDT ¤ and MALTE PERSIKE Westf. Wilhelms Universität, FB07, Fliednerstrasse 21, D-48149 Münster, Germany Received 1 April 2003; revised 26 July 2003; accepted 8 August 2003 Abstract —Traditional theories of texture segregation suggest that elementary visual features are processed in parallel by independent modules at early visual stages. Here we show that, for small feature contrasts and large values evoking perceptual popout, different forms of module interaction exist. While discrimination of highly salient features rests on independent feature speciŽ c pathways, information is summed across domains when barely noticeable ones are to be detected in homogeneous textures. Keywords : Feature contrast; feature synergy; nonlinear summation; Weber fraction. 1. INTRODUCTION When we search a visual scenery we are guided by locations of feature dissimilarity which help to separate objects from their surround. Feature contrast, deŽ ned as the difference of object and surround within a basic visual feature such as color, form, orientation or direction of motion, is a major determinant of saliency. Objects with high contrast in at least http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Spatial Vision (continued as Seeing & Perceiving from 2010) Brill

Strength of feature contrast mediates interaction among feature domains

Loading next page...
 
/lp/brill/strength-of-feature-contrast-mediates-interaction-among-feature-Zq0H0vyout
Publisher
Brill
Copyright
© 2003 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0169-1015
eISSN
1568-5683
D.O.I.
10.1163/156856803322552766
Publisher site
See Article on Publisher Site

Abstract

Spatial Vision , Vol. 16, No. 5, pp. 459– 478 (2003) Ó VSP 2003. Also available online - www.vsppub.com Strength of feature contrast mediates interaction among feature domains GÜNTER MEINHARDT ¤ and MALTE PERSIKE Westf. Wilhelms Universität, FB07, Fliednerstrasse 21, D-48149 Münster, Germany Received 1 April 2003; revised 26 July 2003; accepted 8 August 2003 Abstract —Traditional theories of texture segregation suggest that elementary visual features are processed in parallel by independent modules at early visual stages. Here we show that, for small feature contrasts and large values evoking perceptual popout, different forms of module interaction exist. While discrimination of highly salient features rests on independent feature speciŽ c pathways, information is summed across domains when barely noticeable ones are to be detected in homogeneous textures. Keywords : Feature contrast; feature synergy; nonlinear summation; Weber fraction. 1. INTRODUCTION When we search a visual scenery we are guided by locations of feature dissimilarity which help to separate objects from their surround. Feature contrast, deŽ ned as the difference of object and surround within a basic visual feature such as color, form, orientation or direction of motion, is a major determinant of saliency. Objects with high contrast in at least

Journal

Spatial Vision (continued as Seeing & Perceiving from 2010)Brill

Published: Jan 1, 2003

Keywords: Weber fraction.; nonlinear summation; feature synergy; Feature contrast

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off