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eastmountyxz · web-flow · commit b179b069216a · 2021-08-20T17:28:11.000+08:00
diff --git a/blog44-ImageProcessingSummary/ImageProcessing_04_YS.py b/blog44-ImageProcessingSummary/ImageProcessing_04_YS.py
@@ -0,0 +1,55 @@
+# -*- coding:utf-8 -*-
+# By: Eastmount CSDN 2021-08-19
+import cv2  
+import numpy as np
+import matplotlib.pyplot as plt
+ 
+#读取图片
+src = cv2.imread("Lena.png")
+
+#获取图像宽和高
+rows, cols = src.shape[:2]
+
+#BGR转换为RGB
+img = cv2.cvtColor(src, cv2.COLOR_BGR2RGB)
+
+#(1)OpenCV加法运算
+m = np.ones(img.shape, dtype="uint8")*100 #图像各像素加100
+result1 = cv2.add(img, m)
+
+#(2)OpenCV减法运算
+m = np.ones(img.shape, dtype="uint8")*50  #图像各像素减50
+result2 = cv2.subtract(img, m)
+
+#(3)画圆形
+circle = np.zeros((rows, cols, 3), dtype="uint8")
+cv2.circle(circle, (int(rows/2.0), int(cols/2)), 100, (255,0,0), -1)
+print(circle.shape,img.size, circle.size)
+
+#(4)OpenCV图像与运算
+result4 = cv2.bitwise_and(img, circle)
+
+#(5)OpenCV图像或运算
+result5 = cv2.bitwise_or(img, circle)
+
+#(6)OpenCV图像异或运算
+result6 = cv2.bitwise_xor(img, circle)
+
+#(7)OpenCV图像非运算
+result7 = cv2.bitwise_not(img)
+
+#解决中文显示问题
+plt.rcParams['font.sans-serif'] = ['KaiTi']  #指定默认字体
+plt.rcParams['axes.unicode_minus'] = False   #解决保存图像是负号
+
+#显示九张图像
+titles = ['原图', 'RGB', '加法', '减法', '圆形', '与运算', '或运算', '异或运算', '非运算']
+images = [src, img, result1, result2, circle, result4, result5, result6, result7]
+for i in range(9):
+   plt.subplot(3, 3, i+1), plt.imshow(images[i], 'gray')
+   plt.title(titles[i])
+   plt.xticks([]),plt.yticks([])
+plt.show()
+
+
+
