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import json | |
import scipy | |
import scipy.misc | |
import scipy.cluster | |
import webcolors | |
COLOR_TO_COLOR_GROUP = { | |
u'pink': u'pink', | |
u'lightpink': u'pink', | |
u'hotpink': u'pink', | |
u'deeppink': u'pink', | |
u'palevioletred': u'pink', | |
u'mediumvioletred': u'pink', | |
u'lavender': u'purple', | |
u'thistle': u'purple', | |
u'plum': u'purple', | |
u'orchid': u'purple', | |
u'violet': u'purple', | |
u'fuchsia': u'purple', | |
u'magenta': u'purple', | |
u'mediumorchid': u'purple', | |
u'darkorchid': u'purple', | |
u'darkviolet': u'purple', | |
u'blueviolet': u'purple', | |
u'darkmagenta': u'purple', | |
u'purple': u'purple', | |
u'mediumpurple': u'purple', | |
u'mediumslateblue': u'purple', | |
u'slateblue': u'purple', | |
u'darkslateblue': u'purple', | |
u'rebeccapurple': u'purple', | |
u'indigo': u'purple', | |
u'lightsalmon': u'red', | |
u'salmon': u'red', | |
u'darksalmon': u'red', | |
u'lightcoral': u'red', | |
u'indianred': u'red', | |
u'crimson': u'red', | |
u'red': u'red', | |
u'firebrick': u'red', | |
u'darkred': u'red', | |
u'orange': u'orange', | |
u'darkorange': u'orange', | |
u'coral': u'orange', | |
u'tomato': u'orange', | |
u'orangered': u'orange', | |
u'gold': u'yellow', | |
u'yellow': u'yellow', | |
u'lightyellow': u'yellow', | |
u'lemonchiffon': u'yellow', | |
u'lightgoldenrodyellow': u'yellow', | |
u'papayawhip': u'yellow', | |
u'moccasin': u'yellow', | |
u'peachpuff': u'yellow', | |
u'palegoldenrod': u'yellow', | |
u'khaki': u'yellow', | |
u'darkkhaki': u'yellow', | |
u'greenyellow': u'green', | |
u'chartreuse': u'green', | |
u'lawngreen': u'green', | |
u'lime': u'green', | |
u'limegreen': u'green', | |
u'palegreen': u'green', | |
u'lightgreen': u'green', | |
u'mediumspringgreen': u'green', | |
u'springgreen': u'green', | |
u'mediumseagreen': u'green', | |
u'seagreen': u'green', | |
u'forestgreen': u'green', | |
u'green': u'green', | |
u'darkgreen': u'green', | |
u'yellowgreen': u'green', | |
u'olivedrab': u'green', | |
u'darkolivegreen': u'green', | |
u'mediumaquamarine': u'green', | |
u'darkseagreen': u'green', | |
u'lightseagreen': u'green', | |
u'darkcyan': u'green', | |
u'teal': u'green', | |
u'aqua': u'cyan', | |
u'cyan': u'cyan', | |
u'lightcyan': u'cyan', | |
u'paleturquoise': u'cyan', | |
u'aquamarine': u'cyan', | |
u'turquoise': u'cyan', | |
u'mediumturquoise': u'cyan', | |
u'darkturquoise': u'cyan', | |
u'cadetblue': u'blue', | |
u'steelblue': u'blue', | |
u'lightsteelblue': u'blue', | |
u'lightblue': u'blue', | |
u'powderblue': u'blue', | |
u'lightskyblue': u'blue', | |
u'skyblue': u'blue', | |
u'cornflowerblue': u'blue', | |
u'deepskyblue': u'blue', | |
u'dodgerblue': u'blue', | |
u'royalblue': u'blue', | |
u'blue': u'blue', | |
u'mediumblue': u'blue', | |
u'darkblue': u'blue', | |
u'navy': u'blue', | |
u'midnightblue': u'blue', | |
u'cornsilk': u'brown', | |
u'blanchedalmond': u'brown', | |
u'bisque': u'brown', | |
u'navajowhite': u'brown', | |
u'wheat': u'brown', | |
u'burlywood': u'brown', | |
u'tan': u'brown', | |
u'rosybrown': u'brown', | |
u'sandybrown': u'brown', | |
u'goldenrod': u'brown', | |
u'darkgoldenrod': u'brown', | |
u'peru': u'brown', | |
u'chocolate': u'brown', | |
u'olive': u'brown', | |
u'saddlebrown': u'brown', | |
u'sienna': u'brown', | |
u'brown': u'brown', | |
u'maroon': u'brown', | |
u'white': u'white', | |
u'snow': u'white', | |
u'honeydew': u'white', | |
u'mintcream': u'white', | |
u'azure': u'white', | |
u'aliceblue': u'white', | |
u'ghostwhite': u'white', | |
u'whitesmoke': u'white', | |
u'seashell': u'white', | |
u'beige': u'white', | |
u'oldlace': u'white', | |
u'floralwhite': u'white', | |
u'ivory': u'white', | |
u'antiquewhite': u'white', | |
u'linen': u'white', | |
u'lavenderblush': u'white', | |
u'mistyrose': u'white', | |
u'gainsboro': u'grey', | |
u'lightgray': u'grey', | |
u'silver': u'grey', | |
u'darkgray': u'grey', | |
u'dimgray': u'grey', | |
u'gray': u'grey', | |
u'lightslategray': u'grey', | |
u'slategray': u'grey', | |
u'darkslategray': u'grey', | |
u'black': u'grey' | |
} | |
def get_top_colors_from_img(im, colors_cnt=3): | |
def closest_colour(requested_colour): | |
min_colours = {} | |
for key, name in webcolors.css3_hex_to_names.items(): | |
r_c, g_c, b_c = webcolors.hex_to_rgb(key) | |
rd = (r_c - requested_colour[0]) ** 2 | |
gd = (g_c - requested_colour[1]) ** 2 | |
bd = (b_c - requested_colour[2]) ** 2 | |
min_colours[(rd + gd + bd)] = name | |
return min_colours[min(min_colours.keys())] | |
def get_colour_name(requested_colour, cnt): | |
try: | |
name = webcolors.rgb_to_name(requested_colour) | |
except ValueError: | |
name = closest_colour(requested_colour) | |
return { | |
"color": name, | |
"group": COLOR_TO_COLOR_GROUP[name], | |
"hex": webcolors.name_to_hex(name), | |
"counts": cnt | |
} | |
im = im.resize((150, 150)) # optional, to reduce time | |
ar = scipy.misc.fromimage(im=im, mode='RGB') | |
shape = ar.shape | |
ar = ar.reshape(scipy.product(shape[:2]), shape[2]) | |
ar = ar.astype(float) | |
codes, dist = scipy.cluster.vq.kmeans(ar, colors_cnt) | |
vecs, dist = scipy.cluster.vq.vq(ar, codes) # assign codes | |
counts, bins = scipy.histogram(vecs, len(codes)) # count occurrences | |
c_sum = sum(counts) | |
colors = [get_colour_name(codes[i], 100 * counts[i] / c_sum) for i in range(0, len(codes))] | |
colors.sort(key=lambda x: -x['counts']) | |
return colors |
Author
ssledz
commented
Aug 4, 2017
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