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Paper Abstract and Keywords
Presentation 2015-09-04 16:20
Footsteps illusion in 3D and individual differences in stereoscopic vision
Yoshiko Kumasaki, Ken Kihara, Sakuichi Ohtsuka (Kagoshima Univ.) IMQ2015-18
Abstract (in Japanese) (See Japanese page) 
(in English) The footsteps illusion (FI) is a phenomenon in which a pair of dark- and light-gray rectangles moving at constant speed in the same direction appear to shuffle as they cross a background of black and white stripes. We hypothesize that FI is caused by the suppression of contour information of the rectangles. We compare the delay to FI onset in a 2D condition (i.e., contours suppressed by contrast diminishment) and in a 3D condition (i.e., subjective contours are enhanced by adding disparity to the vertical edges of the rectangles) when viewing by the central or peripheral vision. First, subjects are examined to determine if they could correctly perceive the disparities in a dynamic environment by using a series of stimuli. Unexpectedly, the percentage of subjects who were able to perceive all stimuli correctly was less than half. The FI onset delays of the subjects in the correct-perception group are tested. The average delay until FI was perceived in the 3D-central-vision condition was significantly increased compared with that in the other conditions. The results support our hypothesis.
Keyword (in Japanese) (See Japanese page) 
(in English) Footsteps illusion / Subjective contour / 3D / Stereoscopic vision / Individual differences / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 216, IMQ2015-18, pp. 33-36, Sept. 2015.
Paper # IMQ2015-18 
Date of Issue 2015-08-28 (IMQ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee IMQ  
Conference Date 2015-09-04 - 2015-09-04 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IMQ 
Conference Code 2015-09-IMQ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Footsteps illusion in 3D and individual differences in stereoscopic vision 
Sub Title (in English)  
Keyword(1) Footsteps illusion  
Keyword(2) Subjective contour  
Keyword(3) 3D  
Keyword(4) Stereoscopic vision  
Keyword(5) Individual differences  
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1st Author's Name Yoshiko Kumasaki  
1st Author's Affiliation Kagoshima University (Kagoshima Univ.)
2nd Author's Name Ken Kihara  
2nd Author's Affiliation Kagoshima University (Kagoshima Univ.)
3rd Author's Name Sakuichi Ohtsuka  
3rd Author's Affiliation Kagoshima University (Kagoshima Univ.)
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Speaker Author-1 
Date Time 2015-09-04 16:20:00 
Presentation Time 25 minutes 
Registration for IMQ 
Paper # IMQ2015-18 
Volume (vol) vol.115 
Number (no) no.216 
Page pp.33-36 
#Pages 4 
Date of Issue 2015-08-28 (IMQ) 

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