Table 10.

Effect of fine registration by the second stage with single-plant images

A. thaliana	Sample	NCC [-]	ΔMP [px]	OR [%]	ΔMPConvex [px]	ORConvex [%]
RGB-to-ChlF
Single stage*	15 × 12 = 180	0.86 ± 0.02	1.78 ± 1.14	93.1 ± 4.4	1.69 ± 1.14	97.4 ± 2.5
Second stage	15 × 12 = 180	0.91 ± 0.02	1.41 ± 0.86	94.4 ± 3.7	1.32 ± 0.89	98.0 ± 2.3
HSI-to-ChlF
Single stage*	15 × 12 = 180	0.90 ± 0.01	3.70 ± 1.78	89.4 ± 6.6	3.64 ± 1.80	95.2 ± 4.0
Second stage	15 × 12 = 180	0.93 ± 0.02	3.38 ± 1.90	91.8 ± 6.9	3.39 ± 1.93	96.6 ± 4.2

Note: Image metrics were investigated with NCC-adaptive approach and ChlF as reference registration target. Mean ± SD. *As in Tables 5 and 6, but the averaging was applied to the images of single objects instead of the images at plate level with 12 individual objects