PhenoFly Data Processing Tools: Image projection and plot-based sample extraction

Sample scripts to project images on a digital terrain model (DTM), followed by plot-based sample extraction

Development repository:
https://gitlab.ethz.ch/crop_phenotyping/PhenoFly_data_processing_tools

Based on:
Roth, Aasen, Walter, Liebisch 2018: Extracting leaf area index using viewing geometry effects—A new perspective on high-resolution unmanned aerial system photography, ISPRS Journal of Photogrammetry and Remote Sensing.
https://doi.org/10.1016/j.isprsjprs.2018.04.012

Example (see Demo.py):

Input:
Agisoft camera position file (_TestData/sonyDX100II/camera_position_RGB.txt)
Digital terrain model in STL file format (_TestData/sonyDX100II/DTM.stl)
Folder with images (_TestData/sonyDX100II/raw/)
Polygon sampling layer in geoJSON format (_TestData/sonyDX100II/samples_plots.geojson)

Output:
Per-image coordinate and viewpoint information (_Demo_output/dg/)
Image boundaries in wold coordinates as geoJSON (_Demo_output/dg/DG_field_of_views.geojson)
Extracted plot-based image parts (_Demo_output/samples/)
Viewpoint of each extracted sample (_Demo_output/samples/viewpoint.csv)