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Keywords
(10)
3d modelling
Cross Section
Environmental Conditions
Growth Pattern
Laser Scanning
Root Development
Surface Model
Tree Ring
Cross Sectional Area
Mean Absolute Error
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Crosssectional interpolation of annual rings within a 3D root model
Crosssectional interpolation of annual rings within a 3D root model,10.1016/j.dendro.2010.12.003,Dendrochronologia,B. Wagner,H. Gärtner,S. Santini,H.
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Crosssectional interpolation of annual rings within a 3D root model
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B. Wagner
,
H. Gärtner
,
S. Santini
,
H. Ingensand
Ring width of a given year can be highly variable throughout the
cross section
of a stem. This is especially true for roots. Therefore, the entire circumference of tree rings is often needed for studies focusing on specific reactions of individual trees on certain environmental conditions. Also, ring reconstructions are of interest for biomass calculations estimated by the crosssectional area. The aim of the study is thus to reconstruct tree rings of cross sections within a 3D rootsurface model, which will be the basis for an upcoming 3D rootdevelopment model. A FARO ScanArm was used for the acquisition of the 3D root structure (Technologies Inc., 2010). Afterwards ringwidth data was measured along 4 radii per
cross section
and the resulting ring boundaries were integrated into the 3D root model. A weighted interpolation algorithm was used to reconstruct entire ringwidth profiles of the cross sections. The algorithm considered the ringwidth variations of the adjacent radii as well as the outer shape of the cross section. Hence, the intention was to estimate ring width around the root circumference using ring widths measured along 4 radii and the surface dimensions of roots. Interpolated ringwidth data was compared to the measured treering data as a control for the developed interpolation algorithm. Comparisons between modelled and empirical values showed a
mean absolute error
of about 0.06mm deviation, and with a few exceptions the growth patterns could be accurately simulated. This has permitted additional radii measurements to be replaced by model interpolations.
Journal:
Dendrochronologia
, vol. 29, no. 4, pp. 201210, 2011
DOI:
10.1016/j.dendro.2010.12.003
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Citation Context
(1)
...In addition, it is possible to integrate the ringwidth data into a 3D structural surface model of a root system (Wagner et al. 2010;
Wagner et al. 2011
)...
...This study is based on the successful integration of treering profiles at defined cross sections into a 3D surface model (
Wagner et al. 2011
)...
...Data are provided as text files giving the ring width in mm. As previously presented in
Wagner et al. (2011)
cross sectional ringwidth profiles were incorporated into the 3D surface model (Fig. 1a)...
...Afterwards the plane was rotated in the 1° steps calculating at each step the respective intersection points and the ringwidth radii of CS2 were recomputed on this new grid, using the method described in
Wagner et al. (2011)
...
Bettina Wagner
,
et al.
A tool to model 3D coarseroot development with annual resolution
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Citations
(1)
A tool to model 3D coarseroot development with annual resolution
Bettina Wagner
,
Silvia Santini
,
Hilmar Ingensand
,
Holger Gärtner
Journal:
Plant and Soil  PLANT SOIL
, pp. 118