Update app.py

app.py

@@ -20,20 +20,14 @@ def load_image(image_file):
 	return img_np
 
 def convert_one_channel(img):
-    #some images have 3 channels , although they are grayscale image
     if len(img.shape)>2:
         img= cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
-        return img
-    else:
-        return img
+    return img
     
 def convert_rgb(img):
-    #some images have 3 channels , although they are grayscale image
     if len(img.shape)==2:
         img= cv2.cvtColor(img,cv2.COLOR_GRAY2RGB)  
-        return img
-    else:
-        return img
+    return img
 
 def midpoint(ptA, ptB):
 	return ((ptA[0] + ptB[0]) * 0.5, (ptA[1] + ptB[1]) * 0.5)