Add files via upload

eastmountyxz · web-flow · commit 36e1f62c692d · 2021-03-13T20:03:50.000+08:00
diff --git a/blog38-ImageEnhancement/blog38-04.py b/blog38-ImageEnhancement/blog38-04.py
@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# By:Eastmount CSDN 2021-03-12
+import cv2  
+import numpy as np  
+import matplotlib.pyplot as plt
+ 
+#读取图片
+img = cv2.imread('lena.bmp')
+
+#灰度转换
+gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+ 
+#局部直方图均衡化处理
+clahe = cv2.createCLAHE(clipLimit=2, tileGridSize=(10,10))
+
+#将灰度图像和局部直方图相关联, 把直方图均衡化应用到灰度图 
+result = clahe.apply(gray)
+
+#显示图像
+plt.subplot(221)
+plt.imshow(gray, cmap=plt.cm.gray), plt.axis("off"), plt.title('(a)') 
+plt.subplot(222)
+plt.imshow(result, cmap=plt.cm.gray), plt.axis("off"), plt.title('(b)') 
+plt.subplot(223)
+plt.hist(img.ravel(), 256), plt.title('(c)') 
+plt.subplot(224)
+plt.hist(result.ravel(), 256), plt.title('(d)') 
+plt.show()
