Document Detail

The Visible Ground Surface as a Reference Frame for Scaling Binocular Depth of a Target in Midair.
MedLine Citation:
PMID:  25384237     Owner:  NLM     Status:  Publisher    
The natural ground surface carries texture information that extends continuously from one's feet to the horizon, providing a rich depth resource for accurately locating an object resting on it. Here, we showed that the ground surface's role as a reference frame also aids in locating a target suspended in midair based on relative binocular disparity. Using real world setup in our experiments, we first found that a suspended target is more accurately localized when the ground surface is visible and the observer views the scene binocularly. In addition, the increased accuracy occurs only when the scene is viewed for 5 s rather than 0.15 s, suggesting that the binocular depth process takes time. Second, we found that manipulation of the configurations of the texture-gradient and/or linear-perspective cues on the visible ground surface affects the perceived distance of the suspended target in midair. Third, we found that a suspended target is more accurately localized against a ground texture surface than a ceiling texture surface. This suggests that our visual system uses the ground surface as the preferred reference frame to scale the distance of a suspended target according to its relative binocular disparity. (PsycINFO Database Record (c) 2014 APA, all rights reserved).
Jun Wu; Liu Zhou; Pan Shi; Zijiang J He; Teng Leng Ooi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-11-10
Journal Detail:
Title:  Journal of experimental psychology. Human perception and performance     Volume:  -     ISSN:  1939-1277     ISO Abbreviation:  J Exp Psychol Hum Percept Perform     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-11-10     Completed Date:  -     Revised Date:  2014-11-11    
Medline Journal Info:
Nlm Unique ID:  7502589     Medline TA:  J Exp Psychol Hum Percept Perform     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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