| Texture segmentation: do the processing units on the saliency map increase with eccentricity? | |
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MedLine Citation:
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PMID: 20850467 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The saliency map is a computational model and has been constructed for simulating human saliency processing, e.g. pop-out target detection (e.g. Itti & Koch, 2000). In this study the spatial structure on the saliency map was investigated. It is proposed that the saliency map is structured into processing units whose size is increasing with retinal eccentricity. In two experiments the distance between a target in the stimulus and an irrelevant structure in the mask was varied systematically. Our findings had two main points. Firstly, in texture segmentation tasks the saliency signals from two texture irregularities interfere, when these irregularities appear within a critical spatial distance. Second, the critical distances increase with target eccentricity. The eccentricity-dependent critical distances can be interpreted as crowding effects. It is assumed that additionally to the target eccentricity, also the strength of a saliency signal can determine the spatial area of its impairing influence. |
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Authors:
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Ursula Schade; Cristina Meinecke |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-09-17 |
Journal Detail:
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Title: Vision research Volume: 51 ISSN: 1878-5646 ISO Abbreviation: Vision Res. Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2010-12-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: England |
Other Details:
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Languages: eng Pagination: 1-12 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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Institute of Psychology, University of Erlangen-Nuremberg, Kochstr. 4, 91054 Erlangen, Germany. ursula.schade@psy.phil.uni-erlangen.de |
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