KelSolaar

import math

diagonal = lambda w, h: math.sqrt(w ** 2 + h ** 2)

wr = 36. # Reference 24mm * 36mm sensor.
hr = 24.
dr = diagonal(wr, hr)

w = 7.6  # Current sensor: http://en.wikipedia.org/wiki/Image_sensor_format
h = 5.7

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BACKGROUND_CODES = (("bBlack", "40m"),
					("bRed", "41m"),
					("bGreen", "42m"),
					("bYellow", "43m"),
					("bBlue", "44m"),
					("bPurple", "45m"),
					("bCyan", "46m"),
					("bWhite", "47m"),
					("bHighBlack", "100m"),
					("bHighRed", "101m"),

KelSolaar

# PyCharm will complain the the parameters are missing in docstrings with
# Numpy style docstrings.
def XYZ_to_CIECAM02(XYZ,
                    XYZw,
                    LA,
                    Yb,
                    surround=CIECAM02_VIEWING_CONDITIONS.get(
                        'Average'),
                    discount_illuminant=False):
    """

KelSolaar

{'dark skin': np.array([0.07049534, 0.1008, 0.09558313]),
 'light skin': np.array([0.4709771, 0.3495, 0.11301649]),
 'blue sky': np.array([0.37187544, 0.1836, 0.05327788]),
 'foliage': np.array([0.07439008, 0.1325, 0.08761981]),
 'blue flower': np.array([0.55702667, 0.2304, 0.01929602]),
 'bluish green': np.array([0.72072938, 0.4178, -0.0702604]),
 'orange': np.array([0.14092656, 0.3118, 0.31620069]),
 'purplish blue': np.array([0.3568546, 0.1126, 0.06520827]),
 'moderate red': np.array([0.22536132, 0.1938, 0.172956]),
 'purple': np.array([0.10628412, 0.0637, 0.08666374]),

KelSolaar

from pprint import pprint
pr = corresponding_chromaticities_prediction_vonkries(2, 'Bradford')
pr = [(p.uvp_m, p.uvp_p) for p in pr]
pprint(pr)  # doctest: +ELLIPSIS
[((0.20..., 0.48...), (0.2082014..., 0.4722922...)),
 ((0.44..., 0.51...), (0.4489102..., 0.5071602...)),
 ((0.26..., 0.50...), (0.2643545..., 0.4959631...)),
 ((0.32..., 0.54...), (0.3348730..., 0.5471220...)),
 ((0.31..., 0.53...), (0.3248758..., 0.5390589...)),
 ((0.26..., 0.55...), (0.2733105..., 0.5555028...)),

KelSolaar

import numpy as np
import colour
from colour.utilities.verbose import message_box

name, data, illuminant = colour.COLOURCHECKERS['ColorChecker 2005']

sRGB_w = colour.sRGB_COLOURSPACE.whitepoint
sRGB_XYZ_to_RGB = colour.sRGB_COLOURSPACE.to_RGB
sRGB_RGB_to_XYZ = colour.sRGB_COLOURSPACE.to_XYZ
adobe98_w = colour.ADOBE_RGB_1998_COLOURSPACE.whitepoint

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KelSolaar

import numpy as np
import colour

for c in sorted(colour.RGB_COLOURSPACES.values()):
    samples = np.linspace(0, 1, 1000)
    samples_tf = [c.transfer_function(sample) for sample in samples]
    samples_itf = [c.inverse_transfer_function(sample) for sample in samples_tf]
    try:
        np.testing.assert_almost_equal(samples, samples_itf, decimal=4)
    except:

KelSolaar

KelSolaar

set cut_paste_input [stack 0]
version 8.0 v1
Read {
 inputs 0
 file /Users/kelsolaar/Downloads/SonyF35.StillLife.dpx
 format "1920 1080 0 0 1920 1080 1 HD"
 origset true
 colorspace linear
 raw true
 timecode 02:14:20:19