Python histeq 예제들

예제 #1

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)

예제 #2

파일: ch1_hist_equalization.py 프로젝트: onaries/Python-Exercise

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()