def get_wcs_indicies(args_chroma):
wcs_map = build_wcs_map()
chips = build_chiplist()
inidicies = np.empty((8*40))
color_rgb = np.empty((8*40, 3))
for row in xrange(1, 9):
R = chr(ord('A') + row)
for col in xrange(1, 41):
idx = '%s%d' % (R, col)
wcs_chip = wcs_map[idx]
if args_chroma > 0:
chroma = args_chroma
do_fallback = True
do_fallthrough = True
else:
chroma = wcs_chip['chroma']
do_fallback = True
do_fallthrough = False
chip = lookup_chip(wcs_chip['hue'], wcs_chip['value'], chroma, chips, fallback=do_fallback, fallthrough=do_fallthrough)
inidicies[(row-1) * 40 + col-1] = chip['index']
lab = LabColor(*wcs_chip['Lab'])
rgb = lab.convert_to('rgb', debug=False, illuminant='d50')
color_rgb[(row-1) * 40 + col-1, :] = np.array([rgb.rgb_r, rgb.rgb_g, rgb.rgb_b])
return (inidicies, color_rgb)
def fade_colors_rgb(self,rgbcolor1,rgbcolor2,speed=0.1):
"""
Values for color conversion: Best result for me:
target_illuminant=d50
target_rgb=sRGB
target_illuminant=
'a' 'b' 'c' 'd50' 'd55' 'd65' 'd75' 'e' 'f2' 'f7' 'f11'
target_rgb=
'adobe_rgb' 'apple_rgb' 'best_rgb' 'bruce_rgb' 'cie_rgb' 'colormatch_rgb' 'don_rgb_4' 'eci_rgb' 'ekta_space_ps5' 'ntsc_rgb' 'pal_secam_rgb' 'prophoto_rgb' 'smpte_c_rgb' 'srgb' 'wide_gamut_rgb'
"""
rgb1 = RGBColor(rgbcolor1[0],rgbcolor1[1],rgbcolor1[2])
rgb2 = RGBColor(rgbcolor2[0],rgbcolor2[1],rgbcolor2[2])
l1 = rgb1.convert_to('lab',target_illuminant='d50')
l2 = rgb2.convert_to('lab',target_illuminant='d50')
lab1 =[l1.lab_l,l1.lab_a,l1.lab_b]
lab2 =[l2.lab_l,l2.lab_a,l2.lab_b]
for i in range(0,self.fade_steps+1):
l=self.transition3(i,self.fade_steps,lab1,lab2)
lab=LabColor(l[0],l[1],l[2])
r=lab.convert_to('rgb')
rgb=[r.rgb_r,r.rgb_g,r.rgb_b]
self.set_color_rgb(rgb)
sleep(speed)
def wcs_gen_chip(chip):
lab = LabColor(*chip['Lab'])
rgb = lab.convert_to('rgb', debug=False, illuminant='d50')
img = np.ones((100, 100, 3))
img[:,:,0] *= rgb.rgb_r / 255.0
img[:,:,1] *= rgb.rgb_g / 255.0
img[:,:,2] *= rgb.rgb_b / 255.0
return img
def example_lab_to_xyz():
"""
This function shows a simple conversion of an Lab color to an XYZ color
with debugging on (to show verbose output so you can see what the library
is doing for you).
"""
print "=== Simple Example: Lab->XYZ ==="
# Instantiate an Lab color object with the given values.
lab = LabColor(0.903, 16.296, -2.22)
# Show a string representation.
print lab
# Convert to XYZ.
xyz = lab.convert_to('xyz', debug=False)
print xyz
print "=== End Example ===\n"
def example_lab_to_xyz():
"""
This function shows a simple conversion of an Lab color to an XYZ color
with debugging on (to show verbose output so you can see what the library
is doing for you).
"""
print "=== Simple Example: Lab->XYZ ==="
# Instantiate an Lab color object with the given values.
lab = LabColor(0.903, 16.296, -2.22)
# Show a string representation.
print lab
# Convert to XYZ.
xyz = lab.convert_to('xyz', debug=False)
print xyz
print "=== End Example ===\n"
def example_lab_to_rgb():
"""
Conversions to RGB are a little more complex mathematically. There are also
several kinds of RGB color spaces. When converting from a device-independent
color space to RGB, sRGB is assumed unless otherwise specified with the
target_rgb keyword arg.
"""
print "=== RGB Example: Lab->RGB ==="
# Instantiate an Lab color object with the given values.
lab = LabColor(0.903, 16.296, -2.217)
# Show a string representation.
print lab
# Convert to XYZ.
rgb = lab.convert_to('rgb', target_rgb='sRGB', debug=False)
print rgb
print "=== End Example ===\n"
def example_lab_to_rgb():
"""
Conversions to RGB are a little more complex mathematically. There are also
several kinds of RGB color spaces. When converting from a device-independent
color space to RGB, sRGB is assumed unless otherwise specified with the
target_rgb keyword arg.
"""
print "=== RGB Example: Lab->RGB ==="
# Instantiate an Lab color object with the given values.
lab = LabColor(0.903, 16.296, -2.217)
# Show a string representation.
print lab
# Convert to XYZ.
rgb = lab.convert_to('rgb', target_rgb='sRGB', debug=False)
print rgb
print "=== End Example ===\n"
def blend(color1, color2, percentColor1=0.5):
percentColor2 = 1.0-percentColor1
# Convert from QColor to lab
c1Alpha = color1.alpha()
color1 = RGBColor(color1.red(),color1.green(),color1.blue()).convert_to('lab')
c2Alpha = color2.alpha()
color2 = RGBColor(color2.red(),color2.green(),color2.blue()).convert_to('lab')
# Interpolate the colors in lab space
result = LabColor(color1.lab_l*percentColor1+color2.lab_l*percentColor2,
color1.lab_a*percentColor1+color2.lab_a*percentColor2,
color1.lab_b*percentColor1+color2.lab_b*percentColor2)
resultAlpha = c1Alpha*percentColor1 + c2Alpha*percentColor2
# Convert back to QColor
result = result.convert_to('rgb')
return QColor.fromRgba(result.rgb_r,result.rgb_g,result.rgb_b,resultAlpha)
def Msh_RGB(M,s,h):
L,a,b = MSH_Lab(M,s,h)
colour = LabColor(L,a,b,illuminant='d65')
RGB = colour.convert_to('RGB')
return RGB.rgb_r/255.,RGB.rgb_g/255.,RGB.rgb_b/255.
def lab_to_rgb(lab):
labcolor = LabColor(*lab)
rgbcolor = labcolor.convert_to('rgb')
return (rgbcolor.rgb_r, rgbcolor.rgb_g, rgbcolor.rgb_b)
def lab_to_hsv(lab):
labcolor = LabColor(*lab)
hsvcolor = labcolor.convert_to('hsv')
return (hsvcolor.hsv_h, hsvcolor.hsv_s, hsvcolor.hsv_v)
