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Table 1 Direct measurement, estimation by Methods 1 and 2, and the corresponding error percentages of leaf area, leaf length, leaf width, stem height and stem width for the whole plant

From: Reconstruction method and optimum range of camera-shooting angle for 3D plant modeling using a multi-camera photography system

  Leaf number Direct measurement Method 1 Method 2
Estimation Error percentage (%) Estimation Error percentage (%)
Leaf area (cm2) 1 12.9 13.3 3.3 13.3 3.1
2 14.9 15.5 4.0 15.4 3.8
3 19.1 19.9 4.4 20.6 8.2
4 19.0 19.5 2.6 20.7 8.9
5 9.2 9.5 3.9 10.4 13.3
6 10.0 10.4 4.2 10.7 7.6
Average 14.2 14.7 3.7 15.2 7.5
Leaf length (mm) 1 49.1 49.2 0.2 (0.1) 49.4 0.6 (0.3)
2 52.4 52.1 0.6 (0.3) 52.2 0.4 (0.2)
3 58.2 57.1 1.9 (1.1) 57.4 1.3 (0.8)
4 55.2 54.0 2.2 (1.2) 56.7 2.7 (1.5)
5 42.9 42.6 0.7 (0.3) 44.3 3.3 (1.4)
6 42.9 43.8 2.1 (0.9) 43.4 1.2 (0.5)
Average 50.1 49.8 1.3 (0.7) 50.57 1.6 (0.8)
Leaf width (mm) 1 34.3 35.8 4.4 (1.5) 35.7 4.1 (1.4)
2 33.8 34.7 2.7 (0.9) 36.7 8.6 (2.9)
3 42.6 40.5 4.9 (2.1) 41.9 1.6 (0.7)
4 44.2 43.7 1.1 (0.5) 45.0 1.8 (0.8)
5 28.9 29.2 1.0 (0.3) 30.7 6.2 (1.8)
6 30.0 31.3 4.3 (1.3) 31.4 4.7 (1.4)
Average 35.6 35.9 3.1 (1.1) 36.9 4.5 (1.5)
Stem (mm) Height Part 1a 18.0 17.5 2.8 (0.5) NG NG
Part 2b 16.0 16.3 1.9 (0.3) 15.4 3.75
Part 3c 18.0 17.5 2.8 (0.5) NG NG
Average 17.3 17.1 2.5 (0.4) NG NG
Width Part 1a 3.9 3.8 2.6 (0.1) NG NG
Part 2b 3.5 3.3 5.7 (0.2) 3.3 5.71
Part 3c 3.0 3.1 3.3 (0.1) NG NG
Average 3.5 3.4 3.9 (0.1) NG NG
  1. aThe internode between the root and the first node
  2. bThe internode between the first node and the second node
  3. c The internode between the second node and the third node. Numbers within (brackets) are error percentages over plant height. NG: There was not enough data to construct 3D model