Smart Agriculture

Figure/Table detail

Parametric Reconstruction of Wheat Leaf Curved Surface Based on Three-Dimensional Point Cloud

ZHUShunyao, QUHongjun, XIAQian, GUOWei, GUOYa

Smart Agriculture, DOI: 10.12133/j.smartag.SA202410004

ID	H/mm	W/mm	$ϕ$	a	$ρ$ /rad	$θ$ /rad	$θ 0$ /rad	Chamfer/mm
1	61.46	4.72	0.416 6	-0.017 1	0.469 4	-3.031 4	1.298 0	0.370
2	133.20	7.58	0.420 9	-0.008 1	0.524 0	-4.853 2	-0.722 4	0.998
3	85.54	7.37	0.431 0	-0.004 4	1.141 7	-3.494 8	0.955 2	0.734
4	69.48	3.65	0.452 7	-0.018 1	0.369 3	-2.349 5	0.030 0	0.409
5	108.54	7.42	0.498 5	0.002 6	1.653 4	-2.201 7	-0.114 9	0.625

Table 1 Parameter estimation results of a single leaf for the parametric reconstruction of measured point clouds of wheat leaves

Other figure/table from this article

Table 2 Point cloud reconstruction error for leaves at different positions on parametric reconstruction wheat leaves
Fig. 1 Overall framework technology roadmap of the study on surface reconstruction of a wheat leaf
Fig. 11 Comparison of local zoomed in point cloud figure of the leaf 2 and the leaf 3
Fig. 17 Reconstructed error of Yang Mai NO.34 and Yan Mai NO.1
Fig. 2 Leaf width-leaf length relationship study for the parametric construction of a wheat leaf surface
Fig. 3 Example blade surface in two states （natural bending and axial twisting） for the parametric construction of a wheat leaf surface
Fig. 4 Flowchart of the point cloud parameter estimation of a wheat leaf parametric surface
Fig. 5 Point cloud segmentation along the vein for the surface parameter estimation of a wheat leaf
Fig. 6 Parameter estimation of random parameter generated point cloud based on the leaf surface parametric equation
Fig. 7 Point cloud of a wheat
Fig. 13 Generated leaf clusters by adjusting <span class="mag-xml-inline-formula"> <math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M177"> <mml:mi>ρ</mml:mi></math></span> and <span class="mag-xml-inline-formula"> <math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M178"> <mml:mi>θ</mml:mi></math></span> in the parametric model
Fig. 15 Parameter estimation results of measured point cloud sequence of wheat leaves
Fig. 16 Point cloud comparison between measured and reconstructed point cloud sequence
Fig. 9 Distribution histogram of estimated residuals of randomly generated leaf surface parameters
Fig. 8 Estimated residuals of randomly generated leaf surface parameters
Fig. 10 Point cloud comparison between measured and reconstructed point clouds for parametric reconstruction of wheat leaves
Fig. 12 Parameter transformation estimation process for parametric reconstruction of wheat leaf point clouds
Fig. 14 Error of point cloud reconstruction of wheat leaves

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