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eastmountyxz · web-flow · commit 9628e67a3843 · 2021-07-19T16:50:59.000+08:00
diff --git a/blog42-ruihua/blog42-03-sobel.py b/blog42-ruihua/blog42-03-sobel.py
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+#encoding:utf-8
+#By:Eastmount CSDN 2021-07-19
+import cv2  
+import numpy as np  
+import matplotlib.pyplot as plt
+ 
+#读取图像
+img = cv2.imread('lena.png')
+lenna_img = cv2.cvtColor(img,cv2.COLOR_BGR2RGB)
+
+#灰度化处理图像
+grayImage = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+ 
+#Sobel算子
+x = cv2.Sobel(grayImage, cv2.CV_16S, 1, 0) #对x求一阶导
+y = cv2.Sobel(grayImage, cv2.CV_16S, 0, 1) #对y求一阶导
+absX = cv2.convertScaleAbs(x)      
+absY = cv2.convertScaleAbs(y)    
+Sobel = cv2.addWeighted(absX, 0.5, absY, 0.5, 0)
+
+#用来正常显示中文标签
+plt.rcParams['font.sans-serif']=['SimHei']
+
+#显示图形
+titles = [u'原始图像', u'Sobel算子']  
+images = [lenna_img, Sobel]  
+for i in range(2):  
+   plt.subplot(1,2,i+1), plt.imshow(images[i], 'gray')  
+   plt.title(titles[i])  
+   plt.xticks([]),plt.yticks([])  
+plt.show()
