写真測量とリモートセンシング
Online ISSN : 1883-9061
Print ISSN : 0285-5844
53 巻 , 2 号
選択された号の論文の9件中1~9を表示しています
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  • 小花和 宏之, 早川 裕弌, 齋藤 仁, ゴメス クリストファー
    2014 年 53 巻 2 号 p. 67-74
    発行日: 2014年
    公開日: 2015/05/01
    ジャーナル フリー
    In the last few years, SfM (Structure from Motion) based on photographs taken from UAV (Unmanned Aerial Vehicle) has attracted a tremendous amount of interest for the creation of DSM (Digital Surface Model) and other morphometric products. However, the accuracy of the derived DSM hasn't been sufficiently evaluated yet. Therefore, the present contribution aims to compare UAV-based SfM data against TLS (Terrestrial Laser Scanning) derived DSM data. The fieldwork was carried out on a wave-cut bench in Kanagawa Prefecture (Japan). Results have indicated that DSM data derived from UAV-SfM can create a point cloud of comparable density to the one created by TLS, with a maximum deviation of 10 cm from the TLS data. The UAV-SfM technique has a great potential for a wide range of application, because of its high data accuracy, low acquisition and operational costs, allowing high spatial and temporal data recording.
  • 佐藤 龍治, 平岡 透, 野中 尋史, 高見 徹
    2014 年 53 巻 2 号 p. 75-79
    発行日: 2014年
    公開日: 2015/05/01
    ジャーナル フリー
    Currently, a DEM (Digital Elevation Model) of high density range has been able to be created by spread of airborne laser scanner. However, when the DEM is created, the points of the DEM can not be interpolated accurately in some cases. Therefore, we propose a method of accurately interpolating the points of the DEM. The proposed method is performed by using iterative bilateral filter. Through the experiments using the DEM of 5m mesh, we demonstrate the effectiveness of our interpolation method.
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