Summary of the characteristics of the image data used.
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(*) Mapping scale estimate based on the digital mapping camera (DMC) from Z/I Imaging with 12 µm pixel size and 25 cm to 50 cm ground sample distance (GSD). For 2009 the UltraCamXp Vexcel Imaging camera was used (orthoimages with GSD of 25 cm).
创建时间：
2015-12-02
