著者

薄 充孝 中川 知香 佐藤 智和 横矢 直和

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.13, no.2, pp.161-170, 2008

被引用文献数

15

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In this paper, we propose a novel method that estimates camera position and posture from a single image using a feature landmark database. Conventionally, several kinds of camera parameter estimation methods are proposed in which pre-constructed database is used to estimate the camera parameters. In the most of these methods, they achieve fast and high accurate estimation by limiting searching range for the database using the assumption that camera motion for successive image frames is small. However, if the input is a single image, these approaches do not work because there is no good initial parameter to limit the searching range for the database. In this research, we gradually limits the searching range for the landmark database by using GPS position, SIFT distance, and consistency of camera position and posture. The validity of the proposed method has been shown through experiments for an outdoor environment.