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The role of semantics in the perceptual organization of shape

Establishing correspondence between objects is fundamental for object constancy, similarity perception and identifying transformations. Previous studies measured point-to-point correspondence between objects before and after rigid and non-rigid shape transformations. However, we can also identify ‘s...

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Autores principales: Schmidt, Filipp, Kleis, Jasmin, Morgenstern, Yaniv, Fleming, Roland W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7746709/
https://www.ncbi.nlm.nih.gov/pubmed/33335146
http://dx.doi.org/10.1038/s41598-020-79072-w
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author Schmidt, Filipp
Kleis, Jasmin
Morgenstern, Yaniv
Fleming, Roland W.
author_facet Schmidt, Filipp
Kleis, Jasmin
Morgenstern, Yaniv
Fleming, Roland W.
author_sort Schmidt, Filipp
collection PubMed
description Establishing correspondence between objects is fundamental for object constancy, similarity perception and identifying transformations. Previous studies measured point-to-point correspondence between objects before and after rigid and non-rigid shape transformations. However, we can also identify ‘similar parts’ on extremely different objects, such as butterflies and owls or lizards and whales. We measured point-to-point correspondence between such object pairs. In each trial, a dot was placed on the contour of one object, and participants had to place a dot on ‘the corresponding location’ of the other object. Responses show correspondence is established based on similarities between semantic parts (such as head, wings, or legs). We then measured correspondence between ambiguous objects with different labels (e.g., between ‘duck’ and ‘rabbit’ interpretations of the classic ambiguous figure). Despite identical geometries, correspondences were different across the interpretations, based on semantics (e.g., matching ‘Head’ to ‘Head’, ‘Tail’ to ‘Tail’). We present a zero-parameter model based on labeled semantic part data (obtained from a different group of participants) that well explains our data and outperforms an alternative model based on contour curvature. This demonstrates how we establish correspondence between very different objects by evaluating similarity between semantic parts, combining perceptual organization and cognitive processes.
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spelling pubmed-77467092020-12-18 The role of semantics in the perceptual organization of shape Schmidt, Filipp Kleis, Jasmin Morgenstern, Yaniv Fleming, Roland W. Sci Rep Article Establishing correspondence between objects is fundamental for object constancy, similarity perception and identifying transformations. Previous studies measured point-to-point correspondence between objects before and after rigid and non-rigid shape transformations. However, we can also identify ‘similar parts’ on extremely different objects, such as butterflies and owls or lizards and whales. We measured point-to-point correspondence between such object pairs. In each trial, a dot was placed on the contour of one object, and participants had to place a dot on ‘the corresponding location’ of the other object. Responses show correspondence is established based on similarities between semantic parts (such as head, wings, or legs). We then measured correspondence between ambiguous objects with different labels (e.g., between ‘duck’ and ‘rabbit’ interpretations of the classic ambiguous figure). Despite identical geometries, correspondences were different across the interpretations, based on semantics (e.g., matching ‘Head’ to ‘Head’, ‘Tail’ to ‘Tail’). We present a zero-parameter model based on labeled semantic part data (obtained from a different group of participants) that well explains our data and outperforms an alternative model based on contour curvature. This demonstrates how we establish correspondence between very different objects by evaluating similarity between semantic parts, combining perceptual organization and cognitive processes. Nature Publishing Group UK 2020-12-17 /pmc/articles/PMC7746709/ /pubmed/33335146 http://dx.doi.org/10.1038/s41598-020-79072-w Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Schmidt, Filipp
Kleis, Jasmin
Morgenstern, Yaniv
Fleming, Roland W.
The role of semantics in the perceptual organization of shape
title The role of semantics in the perceptual organization of shape
title_full The role of semantics in the perceptual organization of shape
title_fullStr The role of semantics in the perceptual organization of shape
title_full_unstemmed The role of semantics in the perceptual organization of shape
title_short The role of semantics in the perceptual organization of shape
title_sort role of semantics in the perceptual organization of shape
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7746709/
https://www.ncbi.nlm.nih.gov/pubmed/33335146
http://dx.doi.org/10.1038/s41598-020-79072-w
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