Method: Chromate::Lab.difference

Defined in:
lib/chromate/lab.rb

.difference(lab1, lab2) ⇒ Integer

Determine the difference (delta-E 1976) between two L*a*b* color values.



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# File 'lib/chromate/lab.rb', line 271

def self.difference(lab1, lab2)
  Math.sqrt(
    (lab1[0] - lab2[0]) ** 2 +
    (lab1[1] - lab2[1]) ** 2 +
    (lab1[2] - lab2[2]) ** 2
  )
end