diff --git a/isv_project/app/src/blend_images.py b/isv_project/app/src/blend_images.py
new file mode 100644
index 0000000..ba96f53
--- /dev/null
+++ b/isv_project/app/src/blend_images.py
@@ -0,0 +1,20 @@
+from PIL import Image
+import numpy as np
+import matplotlib.pyplot as plt
+
+def blend_images(img1, img2, blend_ratio):
+
+    img2 = img2.resize(img1.size)
+
+    array1 = np.array(img1)
+    array2 = np.array(img2)
+
+    blended_array = np.round(array1 * blend_ratio + array2 * (1 - blend_ratio)).astype(np.uint8)
+
+    if blended_array.ndim == 2:
+        blended_array = np.expand_dims(blended_array, axis=2)
+
+    blended_img = Image.fromarray(blended_array, 'RGB')
+
+    return blended_img
+
diff --git a/isv_project/app/src/convert_to_black_and_white.py b/isv_project/app/src/convert_to_black_and_white.py
new file mode 100644
index 0000000..af3eed0
--- /dev/null
+++ b/isv_project/app/src/convert_to_black_and_white.py
@@ -0,0 +1,7 @@
+def convert_to_black_and_white(image):
+    for x in range(image.width):
+        for y in range(image.height):
+            pixel_color = image.getpixel((x, y))
+
+            if pixel_color != (255, 255, 255):
+                image.putpixel((x, y), (0, 0, 0))
\ No newline at end of file
diff --git a/isv_project/app/src/convert_to_grayscale.py b/isv_project/app/src/convert_to_grayscale.py
new file mode 100644
index 0000000..444de8e
--- /dev/null
+++ b/isv_project/app/src/convert_to_grayscale.py
@@ -0,0 +1,4 @@
+def convert_to_grayscale(image):
+
+    grayscale_image = image.convert("L")
+    return grayscale_image
\ No newline at end of file
diff --git a/isv_project/app/src/create_gif.py b/isv_project/app/src/create_gif.py
new file mode 100644
index 0000000..81c81ac
--- /dev/null
+++ b/isv_project/app/src/create_gif.py
@@ -0,0 +1,11 @@
+import imageio
+from PIL import Image
+
+def creer_gif(tableau_images, output_path, duree=0.5):
+    gif = []
+
+    for img in tableau_images:
+        gif.append(Image.fromarray(img))
+
+    # Enregistrer le GIF
+    imageio.mimsave(output_path, gif, duration=duree)
diff --git a/isv_project/app/src/fusionner_horizontalement.py b/isv_project/app/src/fusionner_horizontalement.py
new file mode 100644
index 0000000..80ec0b5
--- /dev/null
+++ b/isv_project/app/src/fusionner_horizontalement.py
@@ -0,0 +1,13 @@
+from resize_image import redimensionner_image
+from PIL import Image
+
+def fusionner_horizontalement(image1, image2):
+    nouvelle_largeur = int(image2.size[0] * (image1.size[1] / image2.size[1]))
+    nouvelle_hauteur = image1.size[1]
+    image2_redimensionnee = redimensionner_image(image2, nouvelle_largeur, nouvelle_hauteur)
+
+    result = Image.new('RGB', (image1.width + image2_redimensionnee.width, image1.height))
+    result.paste(image1, (0, 0))
+    result.paste(image2_redimensionnee, (image1.width, 0))
+
+    return result
diff --git a/isv_project/app/src/fusionner_verticalement.py b/isv_project/app/src/fusionner_verticalement.py
new file mode 100644
index 0000000..a0622a4
--- /dev/null
+++ b/isv_project/app/src/fusionner_verticalement.py
@@ -0,0 +1,14 @@
+from resize_image import redimensionner_image
+from PIL import Image
+
+def fusionner_verticalement(image1, image2):
+
+    nouvelle_largeur = image1.size[0]
+    nouvelle_hauteur = int(image2.size[1] * (image1.size[0] / image2.size[0]))
+    image2_redimensionnee = redimensionner_image(image2, nouvelle_largeur, nouvelle_hauteur)
+
+    result = Image.new('RGB', (image1.width, image1.height + image2_redimensionnee.height))
+    result.paste(image1, (0, 0))
+    result.paste(image2_redimensionnee, (0, image1.height))
+
+    return result
\ No newline at end of file
diff --git a/isv_project/app/src/image_opener.py b/isv_project/app/src/image_opener.py
new file mode 100644
index 0000000..8765fc3
--- /dev/null
+++ b/isv_project/app/src/image_opener.py
@@ -0,0 +1,4 @@
+from PIL import Image
+
+def open_image(image_path):
+    return Image.open(image_path)
diff --git a/isv_project/app/src/resize_image.py b/isv_project/app/src/resize_image.py
new file mode 100644
index 0000000..b3cd5e1
--- /dev/null
+++ b/isv_project/app/src/resize_image.py
@@ -0,0 +1,17 @@
+from PIL import Image
+import numpy as np
+import matplotlib.pyplot as plt
+
+def redimensionner_image(image, nouvelle_largeur, nouvelle_hauteur):
+    a0, b0, _ = image.shape
+
+    ratio_lignes = a0 / nouvelle_largeur
+    ratio_colonnes = b0 / nouvelle_hauteur
+
+    image_sortie = np.zeros((nouvelle_largeur, nouvelle_hauteur, 3), dtype=np.uint8)
+    for ligne in range(nouvelle_largeur):
+        for col in range(nouvelle_hauteur):
+            for i in range(3):
+                image_sortie[ligne, col, i] = image[int(ligne * ratio_lignes), int(col * ratio_colonnes), i]
+
+    return Image.fromarray(image_sortie)
\ No newline at end of file