图片

读取示例图片，读取示例图片

from sklearn.datasets import load_sample_image
from sklearn.cluster import KMeans
import matplotlib.pyplot as plt

china = load_sample_image('china.jpg')
plt.imshow(china)
plt.show()

观察图片数据格式

image = china[::3,::3]
X = image.reshape(-1,3)
print(china.shape,image.shape,X.shape)

(427, 640, 3) (143, 214, 3) (30602, 3)

考虑如何压缩

image = china[::3,::3]
plt.imshow(image)
plt.show()

image

 

可以用matplotlib.image.imread读取图片

import matplotlib.image as img
zj = img.imread('F:\\timg.jpg')
plt.imshow(zj)
plt.show()
zj

 先缩小图片分辨率

zjs = zj[::3,::3]
plt.imshow(zjs)
plt.show()
zjs