diff --git a/data/img.jpg b/data/img.jpg
new file mode 100644
index 0000000..376385c
Binary files /dev/null and b/data/img.jpg differ
diff --git a/demo3.py b/demo3.py
new file mode 100644
index 0000000..c78103b
--- /dev/null
+++ b/demo3.py
@@ -0,0 +1,31 @@
+from nnnar import *
+from knn import *
+import random
+
+import matplotlib.pyplot as plt
+import numpy as np
+
+image = plt.imread('./data/img.jpg')
+image = np.array(image)
+
+
+height, width, _ = image.shape
+
+def replaceRandomPixel(image,nb):
+    for i in range(nb):
+        y = random.randint(0, height - 1)
+        x = random.randint(0, width - 1)
+        v = [random.randint(0,255), random.randint(0,255), random.randint(0,255)]
+        n = [[-1,-1],[-1,0],[-1,1],[0,-1],[0,1],[1,-1],[1,0],[1,1]]
+        for i in n:
+            if (y+i[0] >= 0 and y+i[0] < height and x+i[1] >= 0 and x+i[1] < width):
+                image[y+i[0],x+i[1]] = v
+    return image
+
+
+image = replaceRandomPixel(image, 1000)
+
+
+plt.imshow(image)
+plt.axis('off')
+plt.show()
\ No newline at end of file
diff --git a/demo4.py b/demo4.py
index ef8a918..b76d91e 100644
--- a/demo4.py
+++ b/demo4.py
@@ -32,7 +32,7 @@ def runOneTest(trainTestRatio):
     value = train.iloc[:, -1].values
 
     for i in range(len(coord)):
-        nnnar.addPoint(np.array(coord[i]), np.array([value[i]]))
+        knn.addPoint(np.array(coord[i]), np.array([value[i]]))
 
     # Test du modèle
     coord = test.iloc[:, :-1].values
@@ -40,7 +40,7 @@ def runOneTest(trainTestRatio):
 
     nbError = 0
     for i in range(len(coord)):
-        if nnnar.getLabelOfPoint(np.array(coord[i]), 5) != value[i]:
+        if knn.getLabelOfPoint(np.array(coord[i]), 5) != value[i]:
             nbError += 1
 
     return 100 - nbError / len(coord) * 100