Establishment of 3D-scanned parametric model database of paprika (Capsicum annuum L.) with growth stage

Simplified estimation of light interception in process-based model (PBM) exhibits decreasing accuracy due to complicated structures of plants.
Functional-structural plant model (FSPM) includes the structural features required for estimation of light interception, which results in improved accuracy over PBM. However, accuracy is still a problem because the model is constructed in an indirect way.
We created high resolution models of paprika plants using 3D scanner every 1 or 2 weeks during growing season.
The scanned models were converted into parametric models to enable the optical simulation on developed models.
The error between the scanned and parametric models was less than 0.1 mm, indicating that the scanned model well reflected the actual plant.
The data of the parametric models were separated by organs for detail analysis.
The analysis with growth stage could be performed more accurately.
In addition, by combining each plant organ into the existing crop modeling tool, it was possible to visualize the plant model close to the actual one.

XXX International Horticultural Congress IHC2018: III International Symposium on Innovation and New Technologies in Protected Cultivation

D.P. Kim, W.H. Kang, J.W. Kim, J.H. Kim, K.S. Park, J.E. Son

3D scanner, 3D reconstruction, growth monitoring, plant modeling, ray-tracing

https://doi.org/10.17660/ActaHortic.2020.1271.37