| The effects of mirror reflections and planar rotations of pictures on the shape percept of the depicted object. | |
| | |
MedLine Citation:
|
PMID: 19950478 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
Mirror reflections and planar rotations of a picture do not result in any variations concerning the internal geometrical layout of the objects depicted in the picture. We examined to what extent these picture plane transformations gave rise to perceptual differences. A large set of pictures was generated by mirror-reflecting and rotating a set of six original photographs in the picture plane. We externalised the percepts of the depicted objects by using a direct perceptual method: the gauge-figure method. Participants had to adjust a gauge figure so that it seemed to be painted on the surface of the depicted object. From an extensive set of settings collected this way, we computed for each picture the three-dimensional interpretation--or pictorial relief--of the depicted object. On the basis of this set of pictorial reliefs, we addressed the effects of mirror reflections and rotations of pictures on the shape percept of the depicted object. Mirror-reflecting a picture around the horizontal axis resulted in large differences in pictorial reliefs, whereas mirror-reflecting pictures around the vertical axis resulted in only small differences in pictorial reliefs. Clockwise 90 degrees, 180 degrees, and 270 degrees rotation affected the pictorial relief significantly. In all cases, the differences between the pictorial reliefs could be resolved by affine transformations, and could thus be ascribed to different solutions of the depth ambiguities inherent in pictures. |
| | |
Authors:
|
Els V K Cornelis; Andrea J van Doorn; Johan Wagemans |
Related Documents
:
|
20396078 - White-light speckle method of measurement of flow velocity distribution. 17941658 - An improved picture of methyl dynamics in proteins from slowly relaxing local structure... 22317738 - A case study of smoke detector assembly work method intervention and evaluation. 3519978 - Computer-averaged views of the 70 s monosome from escherichia coli. 18171968 - Effects of capsular plication and rotator interval closure in simulated multidirectiona... 15770978 - Color rendering properties of interior lighting influenced by a switchable window. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Perception Volume: 38 ISSN: 0301-0066 ISO Abbreviation: Perception Publication Date: 2009 |
Date Detail:
|
Created Date: 2009-12-02 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0372307 Medline TA: Perception Country: England |
Other Details:
|
Languages: eng Pagination: 1439-66 Citation Subset: IM |
Affiliation:
|
Industrial Design, Delft University of Technology, Landbergstraat 15, 2628 CC Delft, The Netherlands. els.cornelis@psy.kuleuven.be |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The relevance of symmetry in line length perception.
Next Document: Illusions can warp visual space.