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 and 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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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) |
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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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