colour.models.dataset.aces_rgb Module¶

ACES RGB Colourspace¶

Defines the ACES RGB colourspace and its variations:

• ACES_RGB_COLOURSPACE
• ACES_RGB_LOG_COLOURSPACE
• ACES_RGB_PROXY_10_COLOURSPACE
• ACES_RGB_PROXY_12_COLOURSPACE

References

colour.models.dataset.aces_rgb.ACES_RGB_PRIMARIES = array([[ 7.34700000e-01, 2.65300000e-01], [ 0.00000000e+00, 1.00000000e+00], [ 1.00000000e-04, -7.70000000e-02]])¶

ACES RGB colourspace primaries.

ACES_RGB_PRIMARIES : ndarray, (3, 2)

References

[3]	Academy Color Encoding Specification (ACES) 4.1.2 Color space chromaticities (Last accessed 24 February 2014)

colour.models.dataset.aces_rgb.ACES_RGB_WHITEPOINT = (0.32168, 0.33767)¶

ACES RGB colourspace whitepoint.

ACES_RGB_WHITEPOINT : tuple

colour.models.dataset.aces_rgb.ACES_RGB_TO_XYZ_MATRIX = array([[ 9.52552396e-01, 0.00000000e+00, 9.36786317e-05], [ 3.43966450e-01, 7.28166097e-01, -7.21325464e-02], [ 0.00000000e+00, 0.00000000e+00, 1.00882518e+00]])¶

ACES RGB colourspace to CIE XYZ colourspace matrix.

ACES_RGB_TO_XYZ_MATRIX : array_like, (3, 3)

References

[4]	http://www.dropbox.com/sh/iwd09buudm3lfod/gyjDF-k7oC/ACES_v1.0.1.pdf: 4.1.4 Converting ACES RGB values to CIE XYZ values (Last accessed 24 February 2014)

colour.models.dataset.aces_rgb.XYZ_TO_ACES_RGB_MATRIX = array([[ 1.04981102e+00, 0.00000000e+00, -9.74845410e-05], [ -4.95903023e-01, 1.37331305e+00, 9.82400365e-02], [ 0.00000000e+00, 0.00000000e+00, 9.91252022e-01]])¶

CIE XYZ colourspace to ACES RGB colourspace matrix.

XYZ_TO_ACES_RGB_MATRIX : array_like, (3, 3)

colour.models.dataset.aces_rgb.ACES_RGB_TRANSFER_FUNCTION(x)¶

Transfer function from linear to ACES RGB colourspace.

ACES_RGB_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_INVERSE_TRANSFER_FUNCTION(x)¶

Inverse transfer function from ACES RGB colourspace to linear.

ACES_RGB_INVERSE_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_COLOURSPACE = <colour.models.rgb_colourspace.RGB_Colourspace object at 0x102e682d0>¶

ACES RGB colourspace.

ACES_RGB_COLOURSPACE : RGB_Colourspace

colour.models.dataset.aces_rgb.ACES_RGB_LOG_CONSTANTS = {'denorm_trans': 3.0517578125e-05, 'log_xperstop': 2048, 'log_unity': 32768, 'denorm_fake0': 1.52587890625e-05}¶

ACES RGB Log colourspace constants.

ACES_RGB_LOG_CONSTANTS : Structure

colour.models.dataset.aces_rgb.ACES_RGB_LOG_TRANSFER_FUNCTION(value, is_16_bit_integer=False)¶

Transfer function from linear to ACES RGB Log colourspace.

ACES_RGB_LOG_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_LOG_INVERSE_TRANSFER_FUNCTION(value)¶

Inverse transfer function from ACES RGB Log colourspace to linear.

ACES_RGB_LOG_INVERSE_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_LOG_COLOURSPACE = <colour.models.rgb_colourspace.RGB_Colourspace object at 0x102e68310>¶

ACES RGB Log colourspace.

ACES_RGB_LOG_COLOURSPACE : RGB_Colourspace

References

[5]	Logarithmic Encoding of ACES Data for use within Color Grading Systems (Last accessed 17 May 2014)

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_10_CONSTANTS = {'CV_min': 0, 'steps_per_stop': 50, 'mid_CV_offset': 425, 'CV_max': 1023, 'mid_log_offset': -2.5}¶

ACES RGB Proxy 10 colourspace constants.

ACES_RGB_PROXY_10_CONSTANTS : Structure

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_12_CONSTANTS = {'CV_min': 0, 'steps_per_stop': 200, 'mid_CV_offset': 1700, 'CV_max': 4095, 'mid_log_offset': -2.5}¶

ACES RGB Proxy 12 colourspace constants.

ACES_RGB_PROXY_12_CONSTANTS : Structure

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_CONSTANTS = CaseInsensitiveMapping({u'12 Bit': {'CV_min': 0, 'steps_per_stop': 200, 'mid_CV_offset': 1700, 'CV_max': 4095, 'mid_log_offset': -2.5}, u'10 Bit': {'CV_min': 0, 'steps_per_stop': 50, 'mid_CV_offset': 425, 'CV_max': 1023, 'mid_log_offset': -2.5}})¶

Aggregated ACES RGB Proxy colourspace constants.

ACES_RGB_PROXY_CONSTANTS : dict

(‘10 Bit’, ‘12 Bit’)

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_10_TRANSFER_FUNCTION(x)¶

Transfer function from linear to ACES RGB Proxy 10 colourspace.

ACES_RGB_PROXY_10_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_10_INVERSE_TRANSFER_FUNCTION(x)¶

Inverse transfer function from ACES RGB Proxy 10 colourspace to linear.

ACES_RGB_PROXY_10_INVERSE_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_12_TRANSFER_FUNCTION(x)¶

Transfer function from linear to ACES RGB Proxy 12 colourspace.

ACES_RGB_PROXY_12_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_12_INVERSE_TRANSFER_FUNCTION(x)¶

Inverse transfer function from ACES RGB Proxy 12 colourspace to linear.

ACES_RGB_PROXY_12_INVERSE_TRANSFER_FUNCTION : object

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_10_COLOURSPACE = <colour.models.rgb_colourspace.RGB_Colourspace object at 0x102e68450>¶

ACES RGB Proxy 10 colourspace.

ACES_RGB_PROXY_10_COLOURSPACE : RGB_Colourspace

References

[6]	ACESproxy, an Integer Log Encoding of ACES Image Data (Last accessed 17 May 2014)

colour.models.dataset.aces_rgb.ACES_RGB_PROXY_12_COLOURSPACE = <colour.models.rgb_colourspace.RGB_Colourspace object at 0x102e68490>¶

ACES RGB Proxy 12 colourspace.

ACES_RGB_PROXY_12_COLOURSPACE : RGB_Colourspace

References

[7]	ACESproxy, an Integer Log Encoding of ACES Image Data (Last accessed 17 May 2014)