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Elevation models DSM and DTM
provide high-resolution data sets for extracting:
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canopy heights by subtracting DSM and DTM
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single tree height by determining the local maxima of the
canopy
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3D coordinates of the tree trunks and tree tops
Canopy and tree height, crown area, number of
single stems and 3D coordinates of tree tops can be directly and
automatically derived data. Based on these parameters the diameter at breast
height (dbh), times volume, h/d proportion and increment can be accurately estimated.
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Classifications of trees and forest stands
to discriminate between:
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broad-leaved trees and conifers by calculating
the ratio of crown height and
crown area
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old growth and young growth
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tree species by additionally using spectral image data RGB and
CIR

Segmentation of single tree crowns within
the canopy by:
pouring
algorithm, raindrop model)
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