def test_degree_of_adaptation():
assert_almost_equal(CIECAM02._compute_degree_of_adaptation(1, 100),
0.940656,
decimal=6)
assert_almost_equal(CIECAM02._compute_degree_of_adaptation(1, 318.31),
0.9994,
decimal=2)
assert_almost_equal(CIECAM02._compute_degree_of_adaptation(1, 31.83),
0.875,
decimal=2)
def create_model_from_data(self, data):
return CIECAM02(
data["X"],
data["Y"],
data["Z"],
data["X_W"],
data["Y_W"],
data["Z_W"],
data["Y_b"],
data["L_A"],
data["c"],
data["N_c"],
data["F"],
)
def rgb_to_cbh(self, r, g, b):
target_xyz = convert_color(sRGBColor(r, g, b, is_upscaled=True),
XYZColor)
perception = CIECAM02(
target_xyz.xyz_x,
target_xyz.xyz_y,
target_xyz.xyz_z,
REFERENCE_WHITE.xyz_x,
REFERENCE_WHITE.xyz_y,
REFERENCE_WHITE.xyz_z,
c=0.69,
n_c=1,
f=1, # I do not know what these parameters mean
l_a=self.ambient_lightness,
y_b=self.background_brightness,
)
return perception.chroma, perception.brightness, perception.hue_angle
def test_xyz_to_rgb():
assert_almost_equal(CIECAM02._xyz_to_rgb(
numpy.array([95.05, 100, 108.9])),
numpy.array([94.9273, 103.527, 108.737]),
decimal=2)
def create_model_from_data(self, data):
return CIECAM02(data['X'], data['Y'], data['Z'], data['X_W'],
data['Y_W'], data['Z_W'], data['Y_b'], data['L_A'],
data['c'], data['N_c'], data['F'])
def test_xyz_to_rgb():
assert_almost_equal(CIECAM02._xyz_to_rgb(numpy.array([95.05, 100, 108.9])),
numpy.array([94.9273, 103.527, 108.737]),
decimal=2)
def test_degree_of_adaptation():
assert_almost_equal(CIECAM02._compute_degree_of_adaptation(1, 100), 0.940656, decimal=6)
assert_almost_equal(CIECAM02._compute_degree_of_adaptation(1, 318.31), 0.9994, decimal=2)
assert_almost_equal(CIECAM02._compute_degree_of_adaptation(1, 31.83), 0.875, decimal=2)
# Adapting luminance
l_a = 328.31
# Surround condition assumed to be average (see CIECAM02 documentation for values)
c = 0.69
n_c = 1
f = 1
model_a = CIECAM02(
color.xyz_x,
color.xyz_y,
color.xyz_z,
illuminant_d65.xyz_x,
illuminant_d65.xyz_y,
illuminant_d65.xyz_z,
y_b_dark,
l_a,
c,
n_c,
f,
)
model_b = CIECAM02(
color.xyz_x,
color.xyz_y,
color.xyz_z,
illuminant_d65.xyz_x,
illuminant_d65.xyz_y,
illuminant_d65.xyz_z,
y_b_light,
l_a,
