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Table 4 Comparisons of linear fits between calibrated L*a*b* images of an X-Rite ColourChecker Digital SG to the ground truth L*a*b* values

From: The BELT and phenoSEED platforms: shape and colour phenotyping of seed samples

Colour channel

Camera

Calibrated data

Slope

R\(^2\)

RMSE

L*

A

0.987

0.998

2.03

B

1.005

0.997

2.22

a*

A

0.956

0.995

2.18

B

1.036

0.994

2.29

b*

A

0.963

0.998

1.75

B

1.038

0.999

1.81

  1. Each cell has two entries, one for each camera