講演名 2006/1/3
RECOGNITION OF CIRCULAR ROAD SIGNS BY USING CONIC FITTING AND LOG POLAR MAPPING(International Workshop on Advanced Image Technology 2006)
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抄録(和)
抄録(英) A method for recognizing circular road signs independent of their size and inclination and robust to occlusion is investigated in this paper. Circular road signs in a visual scene are detected according to their color information, and the color pixels are projected marginally into vertical and horizontal axes; each road sign is separated individually on the basis of the marginal distribution of the color pixels. For eliminating the effect of occlusion caused by other obstacles, the convex hull of each road sign is constructed by using the Radon transform. Conic parameters fitted to the peripheral edge points surrounding the convex hull enables us to determine the size and the inclination of the corresponding road sign. Uncertainty in the inclination for reconstructing a circle from the conic parameters can be avoided by adopting space-variant transform such as log-polar mapping. The experimental results on real image scenes are presented to demonstrate the usefulness of our approach.
キーワード(和)
キーワード(英)
資料番号 IE2005-224
発行日

研究会情報
研究会 IE
開催期間 2006/1/3(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
幹事氏名(和)
幹事氏名(英)
幹事補佐氏名(和)
幹事補佐氏名(英)

講演論文情報詳細
申込み研究会 Image Engineering (IE)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) RECOGNITION OF CIRCULAR ROAD SIGNS BY USING CONIC FITTING AND LOG POLAR MAPPING(International Workshop on Advanced Image Technology 2006)
サブタイトル(和)
キーワード(1)(和/英)
第 1 著者 氏名(和/英) / Masaomi Horino
第 1 著者 所属(和/英)
Department of Information and Communication Engineering The University of Electro-Communications
発表年月日 2006/1/3
資料番号 IE2005-224
巻番号(vol) vol.105
号番号(no) 501
ページ範囲 pp.-
ページ数 6
発行日