python判断、获取一张图片主色调的2个实例_程序人生

python判断图片主色调，单个颜色：

复制代码代码如下:
#!/usr/bin/env python
# -*- coding: utf-8 -*-

import colorsys
from PIL import Image
import optparse

def get_dominant_color(image):
\”\”\”
Find a PIL image\’s dominant color, returning an (r, g, b) tuple.
\”\”\”

image = image.convert(\’RGBA\’)

# Shrink the image, so we don\’t spend too long analysing color
# frequencies. We\’re not interpolating so should be quick.
image.thumbnail((200, 200))

max_score = None
dominant_color = None

for count, (r, g, b, a) in image.getcolors(image.size[0] * image.size[1]):
# Skip 100% transparent pixels
if a == 0:
continue

# Get color saturation, 0-1
saturation = colorsys.rgb_to_hsv(r / 255.0, g / 255.0, b / 255.0)[1]

# Calculate luminance – integer YUV conversion from
# http://en.wikipedia.org/wiki/YUV
y = min(abs(r * 2104 + g * 4130 + b * 802 + 4096 + 131072) >> 13, 235)

# Rescale luminance from 16-235 to 0-1
y = (y – 16.0) / (235 – 16)

# Ignore the brightest colors
if y > 0.9:
continue

# Calculate the score, preferring highly saturated colors.
# Add 0.1 to the saturation so we don\’t completely ignore grayscale
# colors by multiplying the count by zero, but still give them a low
# weight.
score = (saturation + 0.1) * count

if score > max_score:
max_score = score
dominant_color = (r, g, b)

return dominant_color

def main():
img = Image.open(\”meitu.jpg\”)
print \’#%02x%02x%02x\’ % get_dominant_color(img)

if __name__ == \’__main__\’:
main()

python判断一张图片的主色调，多个颜色：