This benchmark was executed on a 2012 macbook and used 200k colors from the XKCD color list. Processing of the raw lab values into objects / matrices was not included in the timings. For the full pickled lab matrix see http://lyst-classifiers.s3.amazonaws.com/color/lab-colors.pk
| method | delta_e | delta_e_matrix |
|---|---|---|
| cie1976 | 3.256 | 0.018 |
| cie1994 | 3.787 | 0.058 |
| cmc | 4.265 | 0.06 |
| cie2000 | 5.563 | 0.213 |
On large data-sets the vectorized version is an order of magnitude faster