Update utils.py

utils.py

@@ -35,7 +35,7 @@ def decode(image_name,txt=None):
 
 def encode(image_name, secret_data,txt=None):
     msg=""
-    BGRimage = cv2.imread(image_name)
+    BGRimage = cv2.imread(f"{image_name}")
     image = cv2.cvtColor(BGRimage, cv2.COLOR_BGR2RGB)    
     n_bytes = image.shape[0] * image.shape[1] * 3 // 8
     print("[*] Maximum bytes to encode:", n_bytes)