"""
F_D = as_float_array(F_D)
return oetf_reverse_BT709(eotf_reverse_BT1886(F_D / 100)) / 59.5208
BT2100_HLG_WEIGHTS = np.array([0.2627, 0.6780, 0.0593])
"""
Luminance weights for *Recommendation ITU-R BT.2100* *Reference HLG*.
BT2100_HLG_WEIGHTS : ndarray
"""
BT2100_HLG_CONSTANTS = Structure(
a=ARIBSTDB67_CONSTANTS.a,
b=1 - 4 * ARIBSTDB67_CONSTANTS.a,
c=0.5 - ARIBSTDB67_CONSTANTS.a * np.log(4 * ARIBSTDB67_CONSTANTS.a))
"""
*Recommendation ITU-R BT.2100* *Reference HLG* constants expressed in their
analytical form in contrast to the *ARIB STD-B67 (Hybrid Log-Gamma)* numerical
reference.
Those constants are not currently in use and are provided as a reference only.
References
----------
:cite:`InternationalTelecommunicationUnion2016a`
BT2100_HLG_CONSTANTS : Structure
"""
def __init__(
self,
path: Optional[str] = None,
header: Optional[Header_IESTM2714] = None,
spectral_quantity: Optional[Literal["absorptance", "exitance", "flux",
"intensity", "irradiance",
"radiance", "reflectance",
"relative", "transmittance",
"R-Factor", "T-Factor",
"other", ]] = None,
reflection_geometry: Optional[Literal["di:8", "de:8", "8:di", "8:de",
"d:d", "d:0", "45a:0", "45c:0",
"0:45a", "45x:0", "0:45x",
"other", ]] = None,
transmission_geometry: Optional[Literal["0:0", "di:0", "de:0", "0:di",
"0:de", "d:d",
"other"]] = None,
bandwidth_FWHM: Optional[Floating] = None,
bandwidth_corrected: Optional[Boolean] = None,
**kwargs,
):
super().__init__(**kwargs)
self._mapping: Structure = Structure(
**{
"element":
"SpectralDistribution",
"elements": (
Element_Specification_IESTM2714("SpectralQuantity",
"spectral_quantity",
required=True),
Element_Specification_IESTM2714("ReflectionGeometry",
"reflection_geometry"),
Element_Specification_IESTM2714("TransmissionGeometry",
"transmission_geometry"),
Element_Specification_IESTM2714(
"BandwidthFWHM",
"bandwidth_FWHM",
read_conversion=as_float_scalar,
),
Element_Specification_IESTM2714(
"BandwidthCorrected",
"bandwidth_corrected",
read_conversion=(
lambda x: True if x == "true" else False),
write_conversion=(
lambda x: "true" if x is True else "False"),
),
),
"data":
Element_Specification_IESTM2714(
"SpectralData", "wavelength", required=True),
})
self._path: Optional[str] = None
self.path = path
self._header: Header_IESTM2714 = Header_IESTM2714()
self.header = optional(header, self._header)
self._spectral_quantity: Optional[Literal["absorptance", "exitance",
"flux", "intensity",
"irradiance", "radiance",
"reflectance", "relative",
"transmittance", "R-Factor",
"T-Factor",
"other", ]] = None
self.spectral_quantity = spectral_quantity
self._reflection_geometry: Optional[Literal["di:8", "de:8", "8:di",
"8:de", "d:d", "d:0",
"45a:0", "45c:0", "0:45a",
"45x:0", "0:45x",
"other", ]] = None
self.reflection_geometry = reflection_geometry
self._transmission_geometry: Optional[Literal["0:0", "di:0", "de:0",
"0:di", "0:de", "d:d",
"other"]] = None
self.transmission_geometry = transmission_geometry
self._bandwidth_FWHM: Optional[Floating] = None
self.bandwidth_FWHM = bandwidth_FWHM
self._bandwidth_corrected: Optional[Boolean] = None
self.bandwidth_corrected = bandwidth_corrected
from colour.models.rgb.transfer_functions import full_to_legal, legal_to_full
from colour.utilities import Structure, as_float, from_range_1, to_domain_1
__author__ = 'Colour Developers'
__copyright__ = 'Copyright (C) 2013-2019 - Colour Developers'
__license__ = 'New BSD License - http://opensource.org/licenses/BSD-3-Clause'
__maintainer__ = 'Colour Developers'
__email__ = '*****@*****.**'
__status__ = 'Production'
__all__ = ['VLOG_CONSTANTS', 'log_encoding_VLog', 'log_decoding_VLog']
VLOG_CONSTANTS = Structure(cut1=0.01,
cut2=0.181,
b=0.00873,
c=0.241514,
d=0.598206)
"""
*Panasonic V-Log* colourspace constants.
VLOG_CONSTANTS : Structure
"""
def log_encoding_VLog(L_in,
bit_depth=10,
out_legal=True,
in_reflection=True,
constants=VLOG_CONSTANTS):
"""
def __init__(
self,
manufacturer: Optional[str] = None,
catalog_number: Optional[str] = None,
description: Optional[str] = None,
document_creator: Optional[str] = None,
unique_identifier: Optional[str] = None,
measurement_equipment: Optional[str] = None,
laboratory: Optional[str] = None,
report_number: Optional[str] = None,
report_date: Optional[str] = None,
document_creation_date: Optional[str] = None,
comments: Optional[str] = None,
):
self._mapping: Structure = Structure(
**{
"element":
"Header",
"elements": (
Element_Specification_IESTM2714("Manufacturer",
"manufacturer"),
Element_Specification_IESTM2714("CatalogNumber",
"catalog_number"),
Element_Specification_IESTM2714(
"Description", "description", required=True),
Element_Specification_IESTM2714(
"DocumentCreator", "document_creator", required=True),
Element_Specification_IESTM2714("UniqueIdentifier",
"unique_identifier"),
Element_Specification_IESTM2714("MeasurementEquipment",
"measurement_equipment"),
Element_Specification_IESTM2714("Laboratory",
"laboratory"),
Element_Specification_IESTM2714("ReportNumber",
"report_number"),
Element_Specification_IESTM2714("ReportDate",
"report_date"),
Element_Specification_IESTM2714(
"DocumentCreationDate",
"document_creation_date",
required=True,
),
Element_Specification_IESTM2714("Comments", "comments",
False),
),
})
self._manufacturer: Optional[str] = None
self.manufacturer = manufacturer
self._catalog_number: Optional[str] = None
self.catalog_number = catalog_number
self._description: Optional[str] = None
self.description = description
self._document_creator: Optional[str] = None
self.document_creator = document_creator
self._unique_identifier: Optional[str] = None
self.unique_identifier = unique_identifier
self._measurement_equipment: Optional[str] = None
self.measurement_equipment = measurement_equipment
self._laboratory: Optional[str] = None
self.laboratory = laboratory
self._report_number: Optional[str] = None
self.report_number = report_number
self._report_date: Optional[str] = None
self.report_date = report_date
self._document_creation_date: Optional[str] = None
self.document_creation_date = document_creation_date
self._comments: Optional[str] = None
self.comments = comments
