Create blog37-01.py

eastmountyxz · web-flow · commit e01bc21e5b46 · 2021-02-07T17:41:25.000+08:00
diff --git a/blog37-histogram/blog37-01.py b/blog37-histogram/blog37-01.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# By:Eastmount CSDN 2021-02-05
+import cv2  
+import numpy as np
+import matplotlib.pyplot as plt
+
+#读取图像
+src = cv2.imread('lena.bmp')
+
+#绘制直方图
+#plt.hist(src.ravel(), 256)
+plt.hist(src.ravel(), bins=256, density=1, facecolor='green', alpha=0.75)
+plt.xlabel("x")
+plt.ylabel("y")
+plt.show()
+
+#显示原始图像
+cv2.imshow("src", src)
+cv2.waitKey(0)
+cv2.destroyAllWindows()
