from PIL import Image
from pylab import *
from PCV.tools import imtools
# 添加中文字体支持
from matplotlib.font_manager import FontProperties
font = FontProperties(fname=r"c:\windows\fonts\SimSun.ttc", size=14)
# im = array(Image.open('E:/python/Python Computer Vision/Image data/empire.jpg').convert('L'))
# 打开图像，并转成灰度图像
im = array(
Image.open(
'E:/python/Python Computer Vision/Image data/AquaTermi_lowcontrast.JPG'
).convert('L'))
im2, cdf = imtools.histeq(im)
figure()
subplot(2, 2, 1)
axis('off')
gray()
title(u'原始图像', fontproperties=font)
imshow(im)
subplot(2, 2, 2)
axis('off')
title(u'直方图均衡化后的图像', fontproperties=font)
imshow(im2)
subplot(2, 2, 3)
axis('off')
title(u'原始直方图', fontproperties=font)
from PIL import Image
from pylab import *
from PCV.tools import imtools
im = array(Image.open('./images/empire.jpg').convert('L'))
im2, cdf = imtools.histeq(im)
figure()
hist(im.flatten(),128)
title('Before the Histogram Equalization')
figure()
title('After the Histogram Equalization')
hist(im2.flatten(),128)
show()