update image padding for xai

explanations.py

@@ -31,7 +31,7 @@ def preprocess_image(image, output_size=(300, 300)):
 def show(img, output_size,p=False, **kwargs):
     img = np.array(img, dtype=np.float32)
 
-    img = preprocess_image(img, output_size=output_size)
+    img = preprocess_image(img, output_size=(output_size,output_size))
 
     # check if channel first
     if img.shape[0] == 1: