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Paper Abstract and Keywords
Presentation 2011-03-08 16:10
Short-term precipitation forecasting using an optical flow algorithm
Kentaro Imajo, Go Hasegawa, Yoshiaki Taniguchi, Hirotaka Nakano (Osaka Univ.) CQ2010-83
Abstract (in Japanese) (See Japanese page) 
(in English) For forecasting precipitation within a few hours, extrapolation methods based on the motion of observed rainy areas are generally used. This is because the computational time is shorter than that of simulating atmospheric disturbances based on hydrodynamics, especially for a few-hour forecasting. However, weather radars owned by Japan Meteorological Agency (JMA) cannot observe sudden and short-term downpours causing urban-area flood, since they do not have enough resolution and frequency. Recently, high-performance radars are being deployed to overcome the problem. However, there is no forecasting information provided using observed data by such high-performance radars. In this report, we propose a method to do short-term forecasting of precipitation with the observation data from high-performance radars. The proposed algorithm is based on an optical flow algorithm using block matching algorithm. We evaluated the proposed method and revealed that the proposed method can provide more accurate forecasting results compared with Nowcast provided by JMA, by more than 25% for between 5 and 60 minutes forecasting.
Keyword (in Japanese) (See Japanese page) 
(in English) short-term precipitation forecasting / extrapolation / optical flow / block matching / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 455, CQ2010-83, pp. 93-98, March 2011.
Paper # CQ2010-83 
Date of Issue 2011-02-28 (CQ) 
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)
Download PDF CQ2010-83

Conference Information
Committee CQ MVE IE  
Conference Date 2011-03-07 - 2011-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Yasuragi IOUJIMA 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quality of Five Senses Media, Communication Design, Image Coding, Food Media, General Area 
Paper Information
Registration To CQ 
Conference Code 2011-03-CQ-MVE-IE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Short-term precipitation forecasting using an optical flow algorithm 
Sub Title (in English)  
Keyword(1) short-term precipitation forecasting  
Keyword(2) extrapolation  
Keyword(3) optical flow  
Keyword(4) block matching  
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1st Author's Name Kentaro Imajo  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Go Hasegawa  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Yoshiaki Taniguchi  
3rd Author's Affiliation Osaka University (Osaka Univ.)
4th Author's Name Hirotaka Nakano  
4th Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2011-03-08 16:10:00 
Presentation Time 25 minutes 
Registration for CQ 
Paper # CQ2010-83 
Volume (vol) vol.110 
Number (no) no.455 
Page pp.93-98 
#Pages 6 
Date of Issue 2011-02-28 (CQ) 

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