1. Geometric quality of orthophoto from aerial images obtained by UAV's consumer grade camera: Lesson learnt.
- Author
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Sai, Silvester Sari, Tjahjadi, Martinus Edwin, Ajiza, Masrurotul, and Purwanto, Hery
- Subjects
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CONSUMERS , *CAMERAS , *REMOTE sensing , *CABINET officers , *DIGITAL cameras , *STATE regulation - Abstract
UAVs (Unmanned Aerial Vehicles) gain wider acceptance for cadaster mapping related activities in Indonesia. This flying platform is usually equipped with consumer grades digital cameras. Such off-the shelf cameras have long been known to suffer unstable lens elements and electronics. Regardless of camera types being mounted on the UAV board, these instabilities are major impediment to attain a high accuracy of orthophoto generated from aerial images obtained by the UAV camera. Geometrical defects of those images would afflict a geometrical quality of the orthophoto which is produced by stitching and rectifying the photographs. This research seeks the quality of the generated orthophoto assembled by those defected images. The method of this study is to conduct geometric and radiometric comparison of the UAV's orthophoto against the well-established standards such as to the ASPRS (American Society of Photogrammetry and Remote Sensing) as well as regulation of State Minister of Agrarian standards. A provision of a 2.7cm ground sampling distance (GSD) of images enables comparative study be conducted through a provision of the independent check points (ICPs). The RMSE figures of areas discrepancies between the ones measured using geodetic type of GPS instruments reveal that the orthophoto map obtained by the UAV is suitable only up to a 1:500 of a map scale. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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