小特集「災害対応に役立つ技術・センサ」
５. SfM-MVS技術を用いた過去の空中写真による災害解析
2026 年 65 巻 1 号 p. 22-24
詳細
2026 年 65 巻 1 号 p. 22-24
Application of Structure-from-Motion (SfM) and Multi-View Stereo (MVS) to archival aerial photographs enables quantitative re-examination of terrain and surface changes caused by past disasters. This study reassessed three types of historical disasters－volcanic eruptions, landslides, and windthrow events－through differential analysis of pre- and post-event digital surface models (DSMs) reconstructed from the imagery. The SfM/MVS-derived DSMs captured volcanic terrain changes such as scoria-cone formation and lava-flow emplacement, and quantitatively delineated areas affected by landslides and windthrow.
