Fig 1.
General schematic diagram of the technique system.
Fig 2.
The 3D visual canopy architecture of rice in a field with eight hills.
The (a) corresponds to Sample S1 (NSICRc222), and (b) corresponds to Sample S2 (NSICRc124H).
Fig 3.
Schematic diagram of dividing a special leaf into fragments.
Fig 4.
Leaf area distribution along the z-axis in (a) with fragment number fnum = 100 and (b) with fragment number fnum = 10. The red lines are for Dns1 = 10 cm, the blue lines are for Dns2 = 5 cm, and the green lines are for Dns3 = 1 cm.
Fig 5.
Leaf area distribution as a function of the distance from the axis of a hill in (a) with fragment number fnum = 100 and (b with fragment number fnum = 10. The red lines represent Dns1 = 10 cm, the blue lines represent Dns2 = 5 cm, and the green lines represent Dns3 = 1 cm.
Fig 6.
Stem image of a rice hill of Sample S6.
The (a) presents the original image and (b) illustrates the 3D stem. The 3D stem was regenerated with the axis of the stem fitted by five measured points and presented as a cylinder determined by measured radius.
Fig 7.
Comparison of the measured leaf length, maximum leaf width and leaf area with the calculated values using the photo method with measured directly of Sample S7, where (a) for comparision of leaf length (cm), (b) for comparision of leaf width (cm) and (c) comparision of leaf area (cm2).
Fig 8.
Comparison of leaf base angle and dropping angle generated using the photo method with measured ones directly from Sample S7, where (a) for comparision of leaf base angle and (b) for comparision of dropping angle.
Fig 9.
Assessment of the reconstruction of the 3D visual plant architecture.
Pictures of the plant hills were taken before measurement (a to d for S4 and i to l for S5), and the virtual plants were reconstructed from the plant pictures (e to h for S4 and m to p for S5).
Fig 10.
The measured light intensity fractions and leaf area in different canopy layers are in comparison with ones calculated from the digital architecture.
In (a), the red and green dash lines represent calculated results of samples S1 and S2, while the red and green symbols are the measured values for S1 and S2, respectively. In the (b), symbols are the calculated against measured leaf areas at different canopy layers for Sample S3, and the line is 1:1 relationship line.