Turning water into rock: The inverted waves effect

Turning water into rock: The inverted waves effect

Humans perceive shape in two-dimensional shaded images, and turning such an image upside down can result in inversion of the relief of this image. Previous research indicates that this inversion is caused by assumptions related to overhead illumination, global convexity and viewpoint above the surfa...

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Main Authors: Jukka Häkkinen, Lauri Gröhn
Format: Article
Language:English
Published: SAGE Publishing 2016-02-01
Series:i-Perception
Online Access:https://doi.org/10.1177/2041669515627951
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spelling doaj-8185ab88ebba4e55949dabfc18daaee42020-11-25T03:09:23ZengSAGE Publishingi-Perception2041-66952016-02-01710.1177/204166951562795110.1177_2041669515627951Turning water into rock: The inverted waves effectJukka HäkkinenLauri GröhnHumans perceive shape in two-dimensional shaded images, and turning such an image upside down can result in inversion of the relief of this image. Previous research indicates that this inversion is caused by assumptions related to overhead illumination, global convexity and viewpoint above the surface. In our article, we describe the inverted waves effect, in which turning an image of waves upside down changes its relief and also its perceived material properties.https://doi.org/10.1177/2041669515627951
collection DOAJ
language English
format Article
sources DOAJ
author Jukka Häkkinen
Lauri Gröhn
spellingShingle Jukka Häkkinen
Lauri Gröhn
Turning water into rock: The inverted waves effect
i-Perception
author_facet Jukka Häkkinen
Lauri Gröhn
author_sort Jukka Häkkinen
title Turning water into rock: The inverted waves effect
title_short Turning water into rock: The inverted waves effect
title_full Turning water into rock: The inverted waves effect
title_fullStr Turning water into rock: The inverted waves effect
title_full_unstemmed Turning water into rock: The inverted waves effect
title_sort turning water into rock: the inverted waves effect
publisher SAGE Publishing
series i-Perception
issn 2041-6695
publishDate 2016-02-01
description Humans perceive shape in two-dimensional shaded images, and turning such an image upside down can result in inversion of the relief of this image. Previous research indicates that this inversion is caused by assumptions related to overhead illumination, global convexity and viewpoint above the surface. In our article, we describe the inverted waves effect, in which turning an image of waves upside down changes its relief and also its perceived material properties.
url https://doi.org/10.1177/2041669515627951
work_keys_str_mv AT jukkahakkinen turningwaterintorocktheinvertedwaveseffect
AT laurigrohn turningwaterintorocktheinvertedwaveseffect
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