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Sample script to **project images on a digital terrain model (DTM)**, followed by **plot-based sample extraction**
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Author: Lukas Roth (lukas.roth@usys.ethz.ch)
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Based on:
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Roth, Aasen, Walter, Liebisch 2018: Extracting leaf area index using viewing
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geometry effects—A new perspective on high-resolution unmanned aerial system
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photography, ISPRS Journal of Photogrammetry and Remote Sensing.
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https://doi.org/10.1016/j.isprsjprs.2018.04.012
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Workflow (see Demo.py)
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Input:
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- Agisoft camera position file (_TestData/sonyDX100II/camera_position_RGB.txt)
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- Digital terrain model in STL file format (_TestData/sonyDX100II/DTM.stl)
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- Folder with images (_TestData/sonyDX100II/raw/)
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- Polygon sampling layer in geoJSON format (_TestData/sonyDX100II/samples_plots.geojson)
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Output:
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- Per-image coordinate and viewpoint information (_Demo_output/dg/)
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- Image boundaries in wold coordinates as geoJSON (_Demo_output/dg/DG_field_of_views.geojson)
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- Extracted plot-based image parts (_Demo_output/samples/)
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- Viewpoint of each extracted sample (_Demo_output/samples/viewpoint.csv)
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No content
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