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Paper Abstract and Keywords
Presentation 2009-12-18 10:15
Accommodative Characteristics and Cues for Images Composed of Many Spatial Frequencies
Toshikazu Matsui (Gunma Univ) HIP2009-109
Abstract (in Japanese) (See Japanese page) 
(in English) This report discusses what cues drive the accommodation mechanism in human vision. The stimuli used in the experiments were still square and sine waves and compound waves composed of the drifting square wave with the spatial frequency of 3 cpd and one of square, sine, and missing fundamental (MF) waves with different spatial frequencies. The accommodative responses were measured using an infrared optometer during paying attention to each image. The following results were obtained: (1) although the accommodation errors for still square waves were the same as those for sine waves in decreasing with an increase in the spatial frequency, they were different in changing with the viewing point; (2) although those for drifting square waves were the same as those for drifting sine waves in decreasing with an increase in the spatial frequency, they were different in decreasing with the drifting speed. These results suggest that spatial features (edges or regions between edges) as well as spatial frequency can be accommodative cues to drive the accommodation mechanism in human vision.
Keyword (in Japanese) (See Japanese page) 
(in English) Accommodation / Accommodative cues / Square waves / Compound drifting waves / Viewing point / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 345, HIP2009-109, pp. 73-78, Dec. 2009.
Paper # HIP2009-109 
Date of Issue 2009-12-10 (HIP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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 HIP  
Conference Date 2009-12-17 - 2009-12-18 
Place (in Japanese) (See Japanese page) 
Place (in English) RIEC 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To HIP 
Conference Code 2009-12-HIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Accommodative Characteristics and Cues for Images Composed of Many Spatial Frequencies 
Sub Title (in English)  
Keyword(1) Accommodation  
Keyword(2) Accommodative cues  
Keyword(3) Square waves  
Keyword(4) Compound drifting waves  
Keyword(5) Viewing point  
1st Author's Name Toshikazu Matsui  
1st Author's Affiliation Gunma University (Gunma Univ)
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Speaker Author-1 
Date Time 2009-12-18 10:15:00 
Presentation Time 25 minutes 
Registration for HIP 
Paper # HIP2009-109 
Volume (vol) vol.109 
Number (no) no.345 
Page pp.73-78 
Date of Issue 2009-12-10 (HIP) 

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