scikit-image/scikit-image — pull request #1164 by blink1073 (2014-09-22 10:42:49+00:00)
Title: Use lut for colorconv

This addresses #1133. Prior to the change, @stefanv's example took ~0.09sec on my machine, and after we get the following behavior:

warmup: 0.190999984741
subsequent: 0.0569999217987

Not a blazing speedup, but 50% is nothing to sneeze at. This could be further improved by storing the LUT on disk. What is the mechanism for that? I see there are `.npz` files in `skimage.data`, but no script that originally created them.