The role of semantics in the perceptual organization of shape

Abstract 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 id...

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Autores principales:	Filipp Schmidt, Jasmin Kleis, Yaniv Morgenstern, Roland W. Fleming
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b53286afd5134888a290b09eee8fb27b
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spelling	oai:doaj.org-article:b53286afd5134888a290b09eee8fb27b2021-12-02T13:34:11ZThe role of semantics in the perceptual organization of shape10.1038/s41598-020-79072-w2045-2322https://doaj.org/article/b53286afd5134888a290b09eee8fb27b2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79072-whttps://doaj.org/toc/2045-2322Abstract 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.Filipp SchmidtJasmin KleisYaniv MorgensternRoland W. FlemingNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-19 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Filipp Schmidt Jasmin Kleis Yaniv Morgenstern Roland W. Fleming The role of semantics in the perceptual organization of shape
description	Abstract 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.
format	article
author	Filipp Schmidt Jasmin Kleis Yaniv Morgenstern Roland W. Fleming
author_facet	Filipp Schmidt Jasmin Kleis Yaniv Morgenstern Roland W. Fleming
author_sort	Filipp Schmidt
title	The role of semantics in the perceptual organization of shape
title_short	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_sort	role of semantics in the perceptual organization of shape
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/b53286afd5134888a290b09eee8fb27b
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The role of semantics in the perceptual organization of shape

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