切割图像流程和分类差不多:
# -*- coding: utf-8 -*-
# 使用K-means对图像进行聚类,显示分割标识的可视化
import numpy as np
import PIL.Image as image
from sklearn.cluster import KMeans
from sklearn import preprocessing
# 加载图像,并对数据进行规范化
def load_data(filePath):
# 读文件
f = open(filePath,'rb')
data = []
# 得到图像的像素值
img = image.open(f)
# 得到图像尺寸
width, height = img.size
for x in range(width):
for y in range(height):
# 得到点(x,y)的三个通道值
c1, c2, c3 = img.getpixel((x, y))
data.append([c1, c2, c3])
f.close()
# 采用Min-Max规范化
mm = preprocessing.MinMaxScaler()
data = mm.fit_transform(data)
return np.mat(data), width, height
# 加载图像,得到规范化的结果img,以及图像尺寸
img, width, height = load_data('./weixin.jpg')
# 用K-Means对图像进行2聚类
kmeans =KMeans(n_clusters=2)
kmeans.fit(img)
label = kmeans.predict(img)
# 将图像聚类结果,转化成图像尺寸的矩阵
label = label.reshape([width, height])
# 创建个新图像pic_mark,用来保存图像聚类的结果,并设置不同的灰度值
pic_mark = image.new("L", (width, height))
for x in range(width):
for y in range(height):
# 根据类别设置图像灰度, 类别0 灰度值为255, 类别1 灰度值为127
pic_mark.putpixel((x, y), int(256/(label[x][y]+1))-1)
pic_mark.save("weixin_mark.jpg", "JPEG")
切割之后图片预览:
# -*- coding: utf-8 -*-
# 使用K-means对图像进行聚类,显示分割标识的可视化
import numpy as np
import PIL.Image as image
from sklearn.cluster import KMeans
from sklearn import preprocessing
from skimage import color
# 加载图像,并对数据进行规范化
def load_data(filePath):
# 读文件
f = open(filePath,'rb')
data = []
# 得到图像的像素值
img = image.open(f)
# 得到图像尺寸
width, height = img.size
for x in range(width):
for y in range(height):
# 得到点(x,y)的三个通道值
c1, c2, c3 = img.getpixel((x, y))
data.append([c1, c2, c3])
f.close()
# 采用Min-Max规范化
mm = preprocessing.MinMaxScaler()
data = mm.fit_transform(data)
return np.mat(data), width, height
# 加载图像,得到规范化的结果img,以及图像尺寸
img, width, height = load_data('./weixin.jpg')
# 用K-Means对图像进行16聚类
kmeans =KMeans(n_clusters=16)
kmeans.fit(img)
label = kmeans.predict(img)
# 将图像聚类结果,转化成图像尺寸的矩阵
label = label.reshape([width, height])
# 将聚类标识矩阵转化为不同颜色的矩阵
label_color = (color.label2rgb(label)*255).astype(np.uint8)
label_color = label_color.transpose(1,0,2)
images = image.fromarray(label_color)
images.save('weixin_mark_color.jpg')
预览:
# -*- coding: utf-8 -*-
# 使用K-means对图像进行聚类,并显示聚类压缩后的图像
import numpy as np
import PIL.Image as image
from sklearn.cluster import KMeans
from sklearn import preprocessing
import matplotlib.image as mpimg
# 加载图像,并对数据进行规范化
def load_data(filePath):
# 读文件
f = open(filePath,'rb')
data = []
# 得到图像的像素值
img = image.open(f)
# 得到图像尺寸
width, height = img.size
for x in range(width):
for y in range(height):
# 得到点(x,y)的三个通道值
c1, c2, c3 = img.getpixel((x, y))
data.append([(c1+1)/256.0, (c2+1)/256.0, (c3+1)/256.0])
f.close()
return np.mat(data), width, height
# 加载图像,得到规范化的结果imgData,以及图像尺寸
img, width, height = load_data('./weixin.jpg')
# 用K-Means对图像进行16聚类
kmeans =KMeans(n_clusters=16)
label = kmeans.fit_predict(img)
# 将图像聚类结果,转化成图像尺寸的矩阵
label = label.reshape([width, height])
# 创建个新图像img,用来保存图像聚类压缩后的结果
img=image.new('RGB', (width, height))
for x in range(width):
for y in range(height):
c1 = kmeans.cluster_centers_[label[x, y], 0]
c2 = kmeans.cluster_centers_[label[x, y], 1]
c3 = kmeans.cluster_centers_[label[x, y], 2]
img.putpixel((x, y), (int(c1*256)-1, int(c2*256)-1, int(c3*256)-1))
img.save('weixin_new.jpg')
预览: