## ComputeDE2000_Lab

##### >Psychtoolbox>PsychColorimetric

Computes the deltaE values (CIEDE2000) for color pairs given in CIELAB coordinates (L*a*b*).

```
dE2000 = [ComputeDE2000](ComputeDE2000)\_Lab(Lab1,Lab2[,kLCH]);
```

The inputs ‘Lab1’ and ‘Lab2’ are N*3 matrices each with one color per row [L*,a*,b*].

The output is a column vector with N elements, containing the according

dE2000 values.

‘kLCH’ is optional and contains one or three elements for the weighting

factors kL, kC, kH (either one value for all, or three values for each).

The weighting factors are set to 1, if ‘kLCH’ is not specified.

This implementation might not be the most efficient but it follows the formulas

given in https://en.wikipedia.org/wiki/Color_difference#CIEDE2000 as closely

as possible for better traceability.

Path Retrieve current version from GitHub | View changelog

`Psychtoolbox/PsychColorimetric/ComputeDE2000_Lab.m`