diff --git a/腐蚀图像.py b/腐蚀图像.py
new file mode 100644
index 0000000..bdd69c5
--- /dev/null
+++ b/腐蚀图像.py
@@ -0,0 +1,17 @@
+import numpy as np
+import cv2
+import matplotlib.pyplot as plt
+img = cv2.imread('./images/pill_002.png')
+gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
+
+ret,thresh = cv2.threshold(gray,0,255,cv2.THRESH_BINARY+cv2.THRESH_OTSU)
+plt.subplot(221),plt.imshow(thresh,cmap='gray'),plt.title('thresh')
+
+# noise removal
+kernel = np.ones((3,3),np.uint8)
+opening = cv2.morphologyEx(thresh,cv2.MORPH_OPEN,kernel,iterations=2)
+sure_bg = cv2.dilate(opening,kernel,iterations=1)
+plt.subplot(222),plt.imshow(sure_bg,cmap='gray'),plt.title('sure_bg')
+
+
+plt.show()