def test_xyz2luv(self):
assert_array_almost_equal(xyz2luv(self.xyz_array), self.luv_array, decimal=3)
# Test the conversion with the rest of the illuminants.
for I in ["d50", "d55", "d65", "d75"]:
for obs in ["2", "10"]:
fname = "luv_array_{0}_{1}.npy".format(I, obs)
luv_array_I_obs = np.load(os.path.join(os.path.dirname(__file__), "data", fname))
assert_array_almost_equal(luv_array_I_obs, xyz2luv(self.xyz_array, I, obs), decimal=2)
for I in ["a", "e"]:
fname = "luv_array_{0}_2.npy".format(I)
luv_array_I_obs = np.load(os.path.join(os.path.dirname(__file__), "data", fname))
assert_array_almost_equal(luv_array_I_obs, xyz2luv(self.xyz_array, I, "2"), decimal=2)
def test_xyz2luv(self):
assert_array_almost_equal(xyz2luv(self.xyz_array),
self.luv_array, decimal=3)
# Test the conversion with the rest of the illuminants.
for I in ["d50", "d55", "d65", "d75"]:
for obs in ["2", "10"]:
fname = "color/tests/data/luv_array_{0}_{1}.npy".format(I, obs)
luv_array_I_obs = np.load(fetch(fname))
assert_array_almost_equal(luv_array_I_obs,
xyz2luv(self.xyz_array, I, obs),
decimal=2)
for I in ["a", "e"]:
fname = "color/tests/data/luv_array_{0}_2.npy".format(I)
luv_array_I_obs = np.load(fetch(fname))
assert_array_almost_equal(luv_array_I_obs,
xyz2luv(self.xyz_array, I, "2"),
decimal=2)
def test_xyz2luv(self):
assert_array_almost_equal(xyz2luv(self.xyz_array),
self.luv_array, decimal=3)
# Test the conversion with the rest of the illuminants.
for I in ["d50", "d55", "d65", "d75"]:
for obs in ["2", "10"]:
fname = "luv_array_{0}_{1}.npy".format(I, obs)
luv_array_I_obs = np.load(
os.path.join(os.path.dirname(__file__), 'data', fname))
assert_array_almost_equal(luv_array_I_obs,
xyz2luv(self.xyz_array, I, obs),
decimal=2)
for I in ["a", "e"]:
fname = "luv_array_{0}_2.npy".format(I)
luv_array_I_obs = np.load(
os.path.join(os.path.dirname(__file__), 'data', fname))
assert_array_almost_equal(luv_array_I_obs,
xyz2luv(self.xyz_array, I, "2"),
decimal=2)
def test_xyz2luv(self):
assert_array_almost_equal(xyz2luv(self.xyz_array),
self.luv_array,
decimal=3)
# Test the conversion with the rest of the illuminants.
for I in ["A", "B", "C", "d50", "d55", "d65"]:
I = I.lower()
for obs in ["2", "10", "R"]:
obs = obs.lower()
fname = f'color/tests/data/luv_array_{I}_{obs}.npy'
luv_array_I_obs = np.load(fetch(fname))
assert_array_almost_equal(luv_array_I_obs,
xyz2luv(self.xyz_array, I, obs),
decimal=2)
for I in ["d75", "e"]:
fname = f'color/tests/data/luv_array_{I}_2.npy'
luv_array_I_obs = np.load(fetch(fname))
assert_array_almost_equal(luv_array_I_obs,
xyz2luv(self.xyz_array, I, "2"),
decimal=2)
def test_xyz2luv_dtype(self):
img = self.xyz_array.astype('float64')
img32 = img.astype('float32')
assert xyz2luv(img).dtype == img.dtype
assert xyz2luv(img32).dtype == img32.dtype
def test_xyz2luv(self):
assert_array_almost_equal(xyz2luv(self.xyz_array),
self.luv_array, decimal=3)
def test_xyz2luv(self):
assert_array_almost_equal(xyz2luv(self.xyz_array),
self.luv_array,
decimal=3)
def test_xyz2luv_channel_axis(self, channel_axis):
# test conversion with channels along a specified axis
xyz = np.moveaxis(self.xyz_array, source=-1, destination=channel_axis)
luv = xyz2luv(xyz, channel_axis=channel_axis)
luv = np.moveaxis(luv, source=channel_axis, destination=-1)
assert_array_almost_equal(luv, self.luv_array, decimal=3)
def to_luv_from_xyz(self):
return Image(xyz2luv(self.to_rgb_from_gray()[:, :, :3])).convert_type(self.dtype)
