def convert(dict, illuminant='D65'):
""" Converts the set of XYZ colours into other spaces: Lab, LCH, sRGB """
illuminant = colour.ILLUMINANTS['CIE 1931 2 Degree Standard Observer'][
illuminant]
dict['Lab'] = colour.XYZ_to_Lab(dict['XYZ'] / 100.,
illuminant) # beware: expects XYZ in [0,1]
dict['LCH'] = colour.Lab_to_LCHab(dict['Lab'])
dict['RGB'] = colour.XYZ_to_sRGB(
dict['XYZ'] / 100., illuminant) # beware: expects XYZ in [0,1]
def set_convertor(name, ill='D65'):
""" Binds the conversion functions LCH2RGB() and RGB2LCH() to the choosen colour package
"""
global LCH2RGB, RGB2LCH, convertor, illuminant
if name not in ['custom', 'colorspacious', 'colourscience']:
print("Unknown conversion module")
return
convertor = name
illuminant = ill
if name == 'custom':
LCH2RGB = lambda L, C, H: XYZ2RGB(Lab2XYZ(LCH2Lab((L, C, H))))
RGB2LCH = lambda R, G, B: Lab2LCH(XYZ2Lab(RGB2XYZ((R, G, B))))
if name == 'colorspacious':
from colorspacious import cspace_convert
func_LCH2RGB = lambda L, C, H: cspace_convert([L, C, H], {
"name": "CIELCh",
"XYZ100_w": ill
}, "sRGB1")
func_RGB2LCH = lambda R, G, B: cspace_convert([R, G, B], "sRGB1", {
"name": "CIELCh",
"XYZ100_w": ill
})
if name == 'colourscience':
import colour as cs
cs_ill = cs.ILLUMINANTS['CIE 1931 2 Degree Standard Observer'][ill]
func_LCH2RGB = lambda L, C, H: cs.XYZ_to_sRGB(
cs.Lab_to_XYZ(cs.LCHab_to_Lab([L, C, H]), illuminant=cs_ill))
func_RGB2LCH = lambda R, G, B: cs.Lab_to_LCHab(
cs.XYZ_to_Lab(cs.sRGB_to_XYZ([R, G, B]), illuminant=cs_ill))
if name == 'colorspacious' or name == 'colourscience':
def LCH2RGB(L, C, H):
if hasattr(L, '__iter__'):
RGB = np.array(list(map(func_LCH2RGB, L, C, H)))
R = RGB[:, 0]
G = RGB[:, 1]
B = RGB[:, 2]
else:
R, G, B = func_LCH2RGB(L, C, H)
return R, G, B
def RGB2LCH(R, G, B):
if hasattr(R, '__iter__'):
LCH = np.array(list(map(func_RGB2LCH, R, G, B)))
L = LCH[:, 0]
C = LCH[:, 1]
H = LCH[:, 2]
else:
L, C, H = func_RGB2LCH(R, G, B)
return L, C, H
print("convertor = '%s' (illuminant = '%s')" % (name, illuminant))
def get_main_color(R,G,B):
sRGB = [R/255,G/255,B/255]
RGB = np.array(sRGB)
XYZ = colour.sRGB_to_XYZ(sRGB)
Lab = colour.XYZ_to_Lab(XYZ)
LCHab = colour.Lab_to_LCHab(Lab)
L = int(LCHab[0]);C = int(LCHab[1]);ab = int(LCHab[2])
print([L,C,ab])
if C<40:# 1
if L<10:
return 'black'
elif L>90:
return 'white'
else:
return 'gray'
elif ab<45:# 2
if L<30:
return 'brown'
elif L>70:
return 'pink'
else:
return 'red'
elif ab<75:# 3
if L<30:
return 'brown'
else:
return 'orange'
elif ab<105:# 4
return 'yellow'
elif ab<210:# 5
return 'green'
elif ab<315:# 6
return 'blue'
elif ab>330:# 7
if L>50:
return 'pink'
else:
return 'purple'
else:
return 'purple'
print(colour.XYZ_to_Lab(XYZ))
print('\n')
Lab = (100.00000000, 28.97832184, 30.96902832)
message_box(('Converting to "CIE XYZ" tristimulus values from given "CIE Lab" '
'colourspace values:\n'
'\n\t{0}'.format(Lab)))
print(colour.Lab_to_XYZ(Lab))
print('\n')
message_box(('Converting to "CIE LCHab" colourspace from given "CIE Lab" '
'colourspace values:\n'
'\n\t{0}'.format(Lab)))
print(colour.Lab_to_LCHab(Lab))
print('\n')
LCHab = (100.00000000, 42.41254357, 46.90195532)
message_box(('Converting to "CIE Lab" colourspace from given "CIE LCHab" '
'colourspace values:\n'
'\n\t{0}'.format(LCHab)))
print(colour.LCHab_to_Lab(LCHab))
print('\n')
XYZ = (114.17634600, 100.00000000, 49.81520600)
message_box(('Converting to "Hunter L,a,b" colour scale from given "CIE XYZ" '
'tristimulus values:\n'
'\n\t{0}'.format(XYZ)))
print(img) # 列印圖像的numpy數組，3緯數組 #%% # 網址1:https://colour.readthedocs.io/en/v0.3.13/generated/colour.sRGB_to_XYZ.html # 網址2:https://colour.readthedocs.io/en/v0.3.7/colour.html # 網址3:https://colour.readthedocs.io/en/v0.3.13/generated/colour.Lab_to_LCHab.html?highlight=lch#colour.Lab_to_LCHab # sRGB_to_XYZ #import colormath #from colormath.color_objects import LabColor, XYZColor #from colormath.color_conversions import convert_color import colour import numpy as np sRGB = [200 / 255, 150 / 255, 100 / 255] RGB = np.array(sRGB) XYZ = colour.sRGB_to_XYZ(sRGB) Lab = colour.XYZ_to_Lab(XYZ) LCHab = colour.Lab_to_LCHab(Lab) L = int(LCHab[0]) C = int(LCHab[1]) ab = int(LCHab[2]) #%% LCHab = ['41', '59', '27'] LCHab = np.array(LCHab) L = int(LCHab[0]) C = int(LCHab[1]) ab = int(LCHab[2]) #%% r = 255 g = 89 b = 0 sRGB = [r / 255, g / 255, b / 255] RGB = np.array(sRGB)
def compute(name, hue, lightness, saturation, output="scss"):
"""
Outputs different conversations of the given CIECAM02 input.
Uses CIECAM with the same "signature" as HLC
"""
xyz = colour.CIECAM02_to_XYZ(
lightness, saturation, hue,
WHITEPOINT_D65_2, adapting_luminance, background_luminance,
surround = surround,
discount_illuminant = discount_illuminant
)
xyz_trans = [ value / 100 for value in xyz ]
#lab_65_10 = colour.XYZ_to_Lab(xyz_trans, illuminant=ILLUMINANT_D65_10)
#lch_65_10 = colour.Lab_to_LCHab(lab_65_10)
#hlc_65_10 = [lch_65_10[2], lch_65_10[0], lch_65_10[1]]
lab_65_2 = colour.XYZ_to_Lab(xyz_trans, illuminant=ILLUMINANT_D65_2)
lch_65_2 = colour.Lab_to_LCHab(lab_65_2)
hlc_65_2 = [lch_65_2[2], lch_65_2[0], lch_65_2[1]]
#lab_50_10 = colour.XYZ_to_Lab(xyz_trans, illuminant=ILLUMINANT_D50_10)
#lch_50_10 = colour.Lab_to_LCHab(lab_50_10)
#hlc_50_10 = [lch_50_10[2], lch_50_10[0], lch_50_10[1]]
lab_50_2 = colour.XYZ_to_Lab(xyz_trans, illuminant=ILLUMINANT_D50_2)
lch_50_2 = colour.Lab_to_LCHab(lab_50_2)
hlc_50_2 = [lch_50_2[2], lch_50_2[0], lch_50_2[1]]
srgb = colour.XYZ_to_sRGB(xyz_trans)
validRGB = True
for entry in srgb:
if entry > 1:
validRGB = False
srgb_trans = [ value * 255 for value in srgb ] if validRGB else [0,0,0]
hex_trans = rgb_to_hex(srgb) if validRGB else "EXCEEDS"
if output == "text":
print("NAME :", name)
print("CAM-65 :", floatlist([hue, lightness, saturation]))
print("XYZ :", floatlist(xyz))
print("LAB-50/2° :", floatlist(lab_50_2))
print("HLC-50/2° :", floatlist(hlc_50_2))
print("LAB-65/2° :", floatlist(lab_65_2))
print("HLC-65/2° :", floatlist(hlc_65_2))
print("sRGB :", floatlist(srgb_trans))
print("HEX :", hex_trans)
print("")
elif output == "scss":
print("$%s: %s;" % (name, hex_trans))
elif output == "print":
print("%s = %s" % (name, intlist(lab_50_2)))
elif output == "affinity":
print("%s = %s" % (name, intlist(lab_65_2)))
