Hi there,
I want to calculate tree height using a standard RGB camera mounted on a UAV. I have read some papers on doing that. Any suggestions on the best possible methods? And I appreciate if someone can point me to open source software's that are available for these kind of analysis
Thanks in advance
vishal
Dear Vishal,
I've come across Open Drone Map and MicMac, but have never worked with these softwares. Regarding tree heights: delineation on individual-scale will largely benefit from a certain openness of the stand or at least canopy height heterogeneity; the ecological setting (leaf-on/leaf-off) will be of relevance; the same goes for your spatial reference data (e.g. ground control points, high-accuracy DEM).
Pls find below a link where we applied an autonomous approach to derive plot-scale heights in a savanna.
Article Disturbance feedbacks on the height of woody vegetation in a...
Dear Manuel,
Appreciate your reply. Will look into the paper you've suggested.
Hi Vishal,
I attempted processing photogrammetric point cloud data derived from UAS using an R-script authored by Carlos Alberto Silva which gave fairly good results depending on the type of forest characteristic you are working with as Manuel has pointed out earlier. Check out this link for the source of the script originally authored for use with LiDAR data http://quantitativeecology.org/using-rlidar-and-fusion-to-delineate-individual-trees-through-canopy-height-model-segmentation/
I am hoping this will be helpful.
Regards,
Ian Asige.
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