def test_cie94():
for p in numpy.eye(3):
for q in numpy.eye(3):
cp = convert_color(sRGBColor(*p), LabColor)
cq = convert_color(sRGBColor(*q), LabColor)
assert abs(
delta_e_cie1994(cp, cq) - cie94(rgb2lab(p), rgb2lab(q))) < 1e-2
def test_rgb2lab():
expected = numpy.array([[53.24, 80.09, 67.20], [87.73, -86.18, 83.18],
[32.30, 79.19, -107.86]])
actual = rgb2lab(numpy.eye(3))
assert numpy.max(abs(expected - actual)) < 1e-2
def embed(self, colors):
return rgb2lab(colors)