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Conversion of RGB to Lab colour type
RGB_to_Lab(input_data)
a 3-dimensional array (RGB image) where the third dimension is equal to 3
Meaning: RGB (Red-Green-Blue) to LAB (Lightness, A-colour-dimension, B-colour-dimension) colour conversion
https://www.epfl.ch/labs/ivrl/research/snic-superpixels/
library(OpenImageR) set.seed(1) array_3d = array(sample(1:255, 675, replace = TRUE), c(15, 15, 3)) res = RGB_to_Lab(array_3d)
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