Visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologically

This paper explores the visual phenomena of a seeming change of the target-object's size (as a focus of concrete visual perception) in the function of an observer's motion so that it 'seems' contrary to the law of linear perspective (in the sense of an expected increase of the ta...

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Main Authors: Đorđević Đorđe, Vujić Gordana
Format: Article
Language:English
Published: Institute of Architecture, Urban & Spatial Planning of Serbia 2010-01-01
Series:Spatium
Subjects:
Online Access:http://www.doiserbia.nb.rs/img/doi/1450-569X/2010/1450-569X1022038D.pdf
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author Đorđević Đorđe
Vujić Gordana
author_facet Đorđević Đorđe
Vujić Gordana
author_sort Đorđević Đorđe
collection DOAJ
description This paper explores the visual phenomena of a seeming change of the target-object's size (as a focus of concrete visual perception) in the function of an observer's motion so that it 'seems' contrary to the law of linear perspective (in the sense of an expected increase of the target volume/monumentality - by getting closer or a decrease - by getting farther away). This phenomenon is described in a geometrical and perceptual aspect; the result of this comprehensive approach led to identify parameters that determine it phenomenologically. It was established that the explored visual phenomenon is a specific 'size illusion', i.e. an 'angular size illusion' that occurs when influenced by factors of the perceptual kind - activated by a specific dynamic relationship (on a visual plan) between the target object and its surrounding competitive objects, as an observer moves. By understanding the character of this phenomenon (both in a geometrical and perceptual sense), it is possible to apply the acquired knowledge in practice - in programming the visual effects to be obtained (such as to visually optimize or minimize the monumentality of targeted objects) in all architectural and urban fields (planning, designing and reconstruction).
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spelling doaj.art-c0e986ef5ad84561a37e9731b4a61da52022-12-22T03:22:13ZengInstitute of Architecture, Urban & Spatial Planning of SerbiaSpatium1450-569X2217-80662010-01-01201022384610.2298/SPAT1022038D1450-569X1022038DVisual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologicallyĐorđević Đorđe0Vujić Gordana1Faculty of Architecture, Belgrade%SR13-01.01Faculty of Architecture, Belgrade%SR13-01.01This paper explores the visual phenomena of a seeming change of the target-object's size (as a focus of concrete visual perception) in the function of an observer's motion so that it 'seems' contrary to the law of linear perspective (in the sense of an expected increase of the target volume/monumentality - by getting closer or a decrease - by getting farther away). This phenomenon is described in a geometrical and perceptual aspect; the result of this comprehensive approach led to identify parameters that determine it phenomenologically. It was established that the explored visual phenomenon is a specific 'size illusion', i.e. an 'angular size illusion' that occurs when influenced by factors of the perceptual kind - activated by a specific dynamic relationship (on a visual plan) between the target object and its surrounding competitive objects, as an observer moves. By understanding the character of this phenomenon (both in a geometrical and perceptual sense), it is possible to apply the acquired knowledge in practice - in programming the visual effects to be obtained (such as to visually optimize or minimize the monumentality of targeted objects) in all architectural and urban fields (planning, designing and reconstruction).http://www.doiserbia.nb.rs/img/doi/1450-569X/2010/1450-569X1022038D.pdfperspectivevisual-direction perceptionsize-distance illusionangular size illusionnew Size-Distance Invariance Hypothesis (SDIH)
spellingShingle Đorđević Đorđe
Vujić Gordana
Visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologically
Spatium
perspective
visual-direction perception
size-distance illusion
angular size illusion
new Size-Distance Invariance Hypothesis (SDIH)
title Visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologically
title_full Visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologically
title_fullStr Visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologically
title_full_unstemmed Visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologically
title_short Visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer's distance: Parameters that influence it phenomenologically
title_sort visual illusion of the change of the size of architectural and urban objects observed upon a change of the observer s distance parameters that influence it phenomenologically
topic perspective
visual-direction perception
size-distance illusion
angular size illusion
new Size-Distance Invariance Hypothesis (SDIH)
url http://www.doiserbia.nb.rs/img/doi/1450-569X/2010/1450-569X1022038D.pdf
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