Create blog20-image01.py

eastmountyxz · web-flow · commit 2cf8fce57aea · 2019-10-17T23:54:14.000+08:00
diff --git a/blog20-mark/blog20-image01.py b/blog20-mark/blog20-image01.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+import cv2  
+import numpy as np  
+import matplotlib.pyplot as plt
+
+#&#35835;&#21462;&#21407;&#22987;&#22270;&#20687;
+img = cv2.imread('lena.png')
+
+#&#33719;&#21462;&#22270;&#20687;&#39640;&#24230;&#21644;&#23485;&#24230;
+height = img.shape[0]
+width = img.shape[1]
+
+#&#21019;&#24314;&#19968;&#24133;&#22270;&#20687;
+new_img = np.zeros((height, width, 3), np.uint8)
+
+#&#22270;&#20687;&#37327;&#21270;&#25805;&#20316; &#37327;&#21270;&#31561;&#32423;&#20026;2
+for i in range(height):
+    for j in range(width):
+        for k in range(3): #&#23545;&#24212;BGR&#19977;&#20998;&#37327;
+            if img[i, j][k] < 128:
+                gray = 0
+            else:
+                gray = 128
+            new_img[i, j][k] = np.uint8(gray)
+        
+#&#26174;&#31034;&#22270;&#20687;
+cv2.imshow("src", img)
+cv2.imshow("", new_img)
+
+#&#31561;&#24453;&#26174;&#31034;
+cv2.waitKey(0)
+cv2.destroyAllWindows()
