Analysis of Detailed Geographical Features using Shadow of Satellite Images in the Case of Illegal dumping site on the Border between Aomori and Iwate Prefectures

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Analysis of Detailed Geographical Features using Shadow of Satellite Images in the Case of Illegal dumping site on the Border between Aomori and Iwate Prefectures

SASAKI, Takanori; ZHAO, Wenhui; FUJITA, Shigetaka

International Journal of the Society of Materials Engineering for Resources, 2006, Volume: 14, Issue: 1-2

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Recently, the analysis of geographical features by digital elevation models (DEM) which are made fromsatellite images, has become a widely researched topic. However, espacially in the case of old satelliteimage, DEM or the stereo pair to make it might be hard-to-find. Then we developed the estimation methodfor three-dimensional detailed geographical features shape using shadow of satellite images. In this study, weinvestigated the influence on the result of estimation by choosing the boundary of a shadow. Also, weexamined the threshold of the brightness to discern the shadows of geographical features from old satelliteimages.

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SASAKI, Takanori | ZHAO, Wenhui | FUJITA, Shigetaka

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