mean filter on an image

susantabiswas · Nov 12, 2017 · a891379 · a891379
1 parent aab547f
commit a891379
Show file tree

Hide file tree

Showing 4 changed files with 21 additions and 0 deletions.
diff --git a/Day4/lenna.jpg b/Day4/lenna.jpg
diff --git a/Day4/mean_filter.py b/Day4/mean_filter.py
@@ -0,0 +1,21 @@
+''' Apply mean filter on an image '''
+
+import cv2
+import numpy as np 
+
+img = cv2.imread('lenna.jpg', 0)
+new_img = np.copy(img)
+prop = img.shape
+
+#we take a 3x3 mask
+'''
+mask:
+0 1 0
+1 2 1
+0 1 0 
+ '''
+for i in range(1, prop[0] - 1):
+    for j in range(1, prop[1] - 1):
+        new_img[i][j] = ( img[i-1][j] + img[i][j-1] + img[i][j]*2 + img[i][j+1] + img[i+1][j])/6
+
+cv2.imwrite('mean_filtered.jpg', new_img)           
diff --git a/Day4/mean_filtered.jpg b/Day4/mean_filtered.jpg
diff --git a/Day4/original.jpg b/Day4/original.jpg