def test_rgb_to_rgb_matrix(self):
"""Test rgb to rgb matrix
"""
ACES_to_proxy_matrix = get_RGB_to_RGB_matrix('ACES', 'ACEScc')
ref_value = numpy.matrix([[1.4514393161, -0.2365107469, -0.2149285693],
[-0.0765537734, 1.1762296998, -0.0996759264],
[0.0083161484, -0.0060324498, 0.9977163014]])
self.assertTrue(numpy.allclose(ACES_to_proxy_matrix, ref_value),
"Processed ACES to ACEScc matrix is different from reference ! ")
ACES_to_Rec2020_matrix = get_RGB_to_RGB_matrix("ACES", 'Rec2020_12bits')
ref_value = [[1.5128613853114372, -0.2589874063019148, -0.22978603267468098],
[-0.079036464595355627, 1.1770668323294038, -0.10075565571179679],
[0.0020912324769753847, -0.03114411050570343, 0.95350416068074784]]
self.assertTrue(numpy.allclose(ACES_to_Rec2020_matrix, ref_value),
"Processed ACES to Rec2020 matrix is different from reference ! ")
def display_matrix(in_colorspace, out_colorspace, matrix_format, primaries_only=False):
"""Display RGB to XYZ matrix corresponding to colorspace and formatting
as format
Args:
colorspace (str): input colorspace.
matrix_format (str): output format. simple, matrix, spimtx.
"""
if in_colorspace == XYZ_colorspace:
if out_colorspace == XYZ_colorspace:
raise AttributeError("In and out colorspaces can't be both XYZ !")
matrix = get_colorspace_matrix(out_colorspace, primaries_only, inv=True)
elif out_colorspace == XYZ_colorspace:
matrix = get_colorspace_matrix(in_colorspace, primaries_only, inv=False)
else:
matrix = get_RGB_to_RGB_matrix(in_colorspace, out_colorspace, primaries_only)
if matrix_format == 'simple':
matrix_dump = matrix_to_string(matrix)
elif matrix_format == 'spimtx':
matrix_dump = matrix_to_spimtx_string(matrix)
else:
matrix_dump = "{0}".format(matrix)
print "{0} to {1} matrix ({2} {3} output):\n".format(in_colorspace,
out_colorspace,
primaries_only and "primaries" or
"primaries + white point",
matrix_format)
print matrix_dump
def test_aces_proxy(self):
"""Test ACES proxy (matrix + encoding)
"""
ref_colors = [[0.001184464, 64.0, 0.001185417],
[222.875, 940.0, 222.860944204]
]
ACES_to_proxy_matrix = get_RGB_to_RGB_matrix('ACES', 'ACESproxy_10')
proxy_to_ACES_matrix = get_RGB_to_RGB_matrix('ACESproxy_10', 'ACES')
for color in ref_colors:
aces_proxy_lin = apply_matrix(ACES_to_proxy_matrix, [color[0]]*3)[2]
aces_proxy = ACESPROXY_10i._encode_gradation(aces_proxy_lin)
self.assertEqual(aces_proxy, color[1])
aces_proxy_lin = ACESPROXY_10i._decode_gradation(aces_proxy)
aces = apply_matrix(proxy_to_ACES_matrix, [aces_proxy_lin]*3)[0]
message = ("ACESproxy not valid ! "
"in: {0} out: {1}").format(aces, color[2])
self.assertTrue(numpy.isclose(aces, color[2], atol=0.000001), message)
def display_matrix(in_colorspace,
out_colorspace,
matrix_format,
primaries_only=False):
"""Display RGB to XYZ matrix corresponding to colorspace and formatting
as format
Args:
colorspace (str): input colorspace.
matrix_format (str): output format. simple, matrix, spimtx.
"""
if in_colorspace == XYZ_colorspace:
if out_colorspace == XYZ_colorspace:
raise AttributeError("In and out colorspaces can't be both XYZ !")
matrix = get_colorspace_matrix(out_colorspace,
primaries_only,
inv=True)
elif out_colorspace == XYZ_colorspace:
matrix = get_colorspace_matrix(in_colorspace,
primaries_only,
inv=False)
else:
matrix = get_RGB_to_RGB_matrix(in_colorspace, out_colorspace,
primaries_only)
if matrix_format == 'simple':
matrix_dump = matrix_to_string(matrix)
elif matrix_format == 'spimtx':
matrix_dump = matrix_to_spimtx_string(matrix)
else:
matrix_dump = "{0}".format(matrix)
print("{0} to {1} matrix ({2} {3} output):\n".format(
in_colorspace, out_colorspace, primaries_only and "primaries"
or "primaries + white point", matrix_format))
print(matrix_dump)
